retire in-tree GPL dtc devicetree compiler

Now that we no longer have GCC 4.2.1 in the tree and can assume FreeBSD
is being built with a C++11 compiler available, we can use BSDL dtc
unconditionally and retire the GPL dtc.

GPL dtc now has FreeBSD CI support via Cirrus-CI to help ensure it
continues to build/work on FreeBSD and is available in the ports tree
if needed.

The copy of (copyfree licensed) libfdt that we actually use is in
sys/contrib/libfdt so the extra copy under contrib/dtc/libfdt can be
removed along with the rest of the GPL dtc.

Reviewed by:	kevans, ian, imp, manu, theraven
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D23192

57 files changed, 7 insertions, 14877 deletions

diff --git a/Makefile.inc1 b/Makefile.inc1
index 80ee71f602d2..f4cee70ee15c 100644
--- a/Makefile.inc1
+++ b/Makefile.inc1
@@ -2233,12 +2233,6 @@ ${_bt}-usr.bin/clang/llvm-tblgen: ${_bt}-lib/clang/libllvmminimal
 ${_bt}-usr.bin/clang/lldb-tblgen: ${_bt}-lib/clang/libllvmminimal
 .endif
 
-# Build BSDL or GPL DTC depending on GPL_DTC option.
-_dtc= usr.bin/dtc
-.if ${MK_GPL_DTC} != "no"
-_dtc= gnu/usr.bin/dtc
-.endif
-
 .if ${MK_LOCALES} != "no"
 _localedef=	usr.bin/localedef
 .endif
@@ -2360,7 +2354,7 @@ bootstrap-tools: ${_bt}-links .PHONY
     ${_clang_tblgen} \
     ${_kerberos5_bootstrap_tools} \
     ${_strfile} \
-    ${_dtc} \
+    usr.bin/dtc \
     ${_cat} \
     ${_kbdcontrol} \
     ${_elftoolchain_libs} \
diff --git a/UPDATING b/UPDATING
index b8eb203b4224..63e26cf81b44 100644
--- a/UPDATING
+++ b/UPDATING
@@ -27,6 +27,11 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 13.x IS SLOW:
 	"ln -s 'abort:false,junk:false' /etc/malloc.conf".)
 
 20200229:
+	The WITH_GPL_DTC option has been removed.  The BSD-licenced device tree
+	compiler in usr.bin/dtc is used on all architectures which use dtc, and
+	the GPL dtc is available (if needed) from the sysutils/dtc port.
+
+20200229:
 	The WITHOUT_LLVM_LIBUNWIND option has been removed.  LLVM's libunwind
 	is used by all supported CPU architectures.
 
diff --git a/contrib/dtc/Documentation/dt-object-internal.txt b/contrib/dtc/Documentation/dt-object-internal.txt
deleted file mode 100644
index 51d68ab93ac9..000000000000
--- a/contrib/dtc/Documentation/dt-object-internal.txt
+++ /dev/null
@@ -1,310 +0,0 @@
-Device Tree Dynamic Object format internals
--------------------------------------------
-
-The Device Tree for most platforms is a static representation of
-the hardware capabilities. This is insufficient for platforms
-that need to dynamically insert Device Tree fragments into the
-live tree.
-
-This document explains the the Device Tree object format and
-modifications made to the Device Tree compiler, which make it possible.
-
-1. Simplified Problem Definition
---------------------------------
-
-Assume we have a platform which boots using following simplified Device Tree.
-
----- foo.dts -----------------------------------------------------------------
-	/* FOO platform */
-	/ {
-		compatible = "corp,foo";
-
-		/* shared resources */
-		res: res {
-		};
-
-		/* On chip peripherals */
-		ocp: ocp {
-			/* peripherals that are always instantiated */
-			peripheral1 { ... };
-		};
-	};
----- foo.dts -----------------------------------------------------------------
-
-We have a number of peripherals that after probing (using some undefined method)
-should result in different Device Tree configuration.
-
-We cannot boot with this static tree because due to the configuration of the
-foo platform there exist multiple conficting peripherals DT fragments.
-
-So for the bar peripheral we would have this:
-
----- foo+bar.dts -------------------------------------------------------------
-	/* FOO platform + bar peripheral */
-	/ {
-		compatible = "corp,foo";
-
-		/* shared resources */
-		res: res {
-		};
-
-		/* On chip peripherals */
-		ocp: ocp {
-			/* peripherals that are always instantiated */
-			peripheral1 { ... };
-
-			/* bar peripheral */
-			bar {
-				compatible = "corp,bar";
-				... /* various properties and child nodes */
-			};
-		};
-	};
----- foo+bar.dts -------------------------------------------------------------
-
-While for the baz peripheral we would have this:
-
----- foo+baz.dts -------------------------------------------------------------
-	/* FOO platform + baz peripheral */
-	/ {
-		compatible = "corp,foo";
-
-		/* shared resources */
-		res: res {
-			/* baz resources */
-			baz_res: res_baz { ... };
-		};
-
-		/* On chip peripherals */
-		ocp: ocp {
-			/* peripherals that are always instantiated */
-			peripheral1 { ... };
-
-			/* baz peripheral */
-			baz {
-				compatible = "corp,baz";
-				/* reference to another point in the tree */
-				ref-to-res = <&baz_res>;
-				... /* various properties and child nodes */
-			};
-		};
-	};
----- foo+baz.dts -------------------------------------------------------------
-
-We note that the baz case is more complicated, since the baz peripheral needs to
-reference another node in the DT tree.
-
-2. Device Tree Object Format Requirements
------------------------------------------
-
-Since the Device Tree is used for booting a number of very different hardware
-platforms it is imperative that we tread very carefully.
-
-2.a) No changes to the Device Tree binary format for the base tree. We cannot
-modify the tree format at all and all the information we require should be
-encoded using Device Tree itself. We can add nodes that can be safely ignored
-by both bootloaders and the kernel. The plugin dtbs are optionally tagged
-with a different magic number in the header but otherwise they're simple
-blobs.
-
-2.b) Changes to the DTS source format should be absolutely minimal, and should
-only be needed for the DT fragment definitions, and not the base boot DT.
-
-2.c) An explicit option should be used to instruct DTC to generate the required
-information needed for object resolution. Platforms that don't use the
-dynamic object format can safely ignore it.
-
-2.d) Finally, DT syntax changes should be kept to a minimum. It should be
-possible to express everything using the existing DT syntax.
-
-3. Implementation
------------------
-
-The basic unit of addressing in Device Tree is the phandle. Turns out it's
-relatively simple to extend the way phandles are generated and referenced
-so that it's possible to dynamically convert symbolic references (labels)
-to phandle values. This is a valid assumption as long as the author uses
-reference syntax and does not assign phandle values manually (which might
-be a problem with decompiled source files).
-
-We can roughly divide the operation into two steps.
-
-3.a) Compilation of the base board DTS file using the '-@' option
-generates a valid DT blob with an added __symbols__ node at the root node,
-containing a list of all nodes that are marked with a label.
-
-Using the foo.dts file above the following node will be generated;
-
-$ dtc -@ -O dtb -o foo.dtb -b 0 foo.dts
-$ fdtdump foo.dtb
-...
-/ {
-	...
-	res {
-		...
-		phandle = <0x00000001>;
-		...
-	};
-	ocp {
-		...
-		phandle = <0x00000002>;
-		...
-	};
-	__symbols__ {
-		res="/res";
-		ocp="/ocp";
-	};
-};
-
-Notice that all the nodes that had a label have been recorded, and that
-phandles have been generated for them.
-
-This blob can be used to boot the board normally, the __symbols__ node will
-be safely ignored both by the bootloader and the kernel (the only loss will
-be a few bytes of memory and disk space).
-
-We generate a __symbols__ node to record nodes that had labels in the base
-tree (or subsequent loaded overlays) so that they can be matched up with
-references made to them in Device Tree objects.
-
-3.b) The Device Tree fragments must be compiled with the same option but they
-must also have a tag (/plugin/) that allows undefined references to nodes
-that are not present at compilation time to be recorded so that the runtime
-loader can fix them.
-
-So the bar peripheral's DTS format would be of the form:
-
-/dts-v1/;
-/plugin/;	/* allow undefined references and record them */
-/ {
-	....	/* various properties for loader use; i.e. part id etc. */
-	fragment@0 {
-		target = <&ocp>;
-		__overlay__ {
-			/* bar peripheral */
-			bar {
-				compatible = "corp,bar";
-				... /* various properties and child nodes */
-			}
-		};
-	};
-};
-
-Note that there's a target property that specifies the location where the
-contents of the overlay node will be placed, and it references the node
-in the foo.dts file.
-
-$ dtc -@ -O dtb -o bar.dtbo -b 0 bar.dts
-$ fdtdump bar.dtbo
-...
-/ {
-	... /* properties */
-	fragment@0 {
-		target = <0xffffffff>;
-		__overlay__ {
-			bar {
-				compatible = "corp,bar";
-				... /* various properties and child nodes */
-			}
-		};
-	};
-	__fixups__ {
-	    ocp = "/fragment@0:target:0";
-	};
-};
-
-No __symbols__ node has been generated (no label in bar.dts).
-Note that the target's ocp label is undefined, so the phandle
-value is filled with the illegal value '0xffffffff', while a __fixups__
-node has been generated, which marks the location in the tree where
-the label lookup should store the runtime phandle value of the ocp node.
-
-The format of the __fixups__ node entry is
-
-  <label> = "<local-full-path>:<property-name>:<offset>" 
-	    [, "<local-full-path>:<property-name>:<offset>"...];
-
-  <label> 		Is the label we're referring
-  <local-full-path>	Is the full path of the node the reference is
-  <property-name>	Is the name of the property containing the
-			reference
-  <offset>		The offset (in bytes) of where the property's
-			phandle value is located.
-
-Doing the same with the baz peripheral's DTS format is a little bit more
-involved, since baz contains references to local labels which require
-local fixups.
-
-/dts-v1/;
-/plugin/;	/* allow undefined label references and record them */
-/ {
-	....	/* various properties for loader use; i.e. part id etc. */
-	fragment@0 {
-		target = <&res>;
-		__overlay__ {
-			/* baz resources */
-			baz_res: res_baz { ... };
-		};
-	};
-	fragment@1 {
-		target = <&ocp>;
-		__overlay__ {
-			/* baz peripheral */
-			baz {
-				compatible = "corp,baz";
-				/* reference to another point in the tree */
-				ref-to-res = <&baz_res>;
-				... /* various properties and child nodes */
-			}
-		};
-	};
-};
-
-Note that &bar_res reference.
-
-$ dtc -@ -O dtb -o baz.dtbo -b 0 baz.dts
-$ fdtdump baz.dtbo
-...
-/ {
-	... /* properties */
-	fragment@0 {
-		target = <0xffffffff>;
-		__overlay__ {
-			res_baz {
-				....
-				phandle = <0x00000001>;
-			};
-		};
-	};
-	fragment@1 {
-		target = <0xffffffff>;
-		__overlay__ {
-			baz {
-				compatible = "corp,baz";
-				... /* various properties and child nodes */
-				ref-to-res = <0x00000001>;
-			}
-		};
-	};
-	__fixups__ {
-		res = "/fragment@0:target:0";
-		ocp = "/fragment@1:target:0";
-	};
-	__local_fixups__ {
-		fragment@1 {
-			__overlay__ {
-				baz {
-					ref-to-res = <0>;
-				};
-			};
-		};
-	};
-};
-
-This is similar to the bar case, but the reference of a local label by the
-baz node generates a __local_fixups__ entry that records the place that the
-local reference is being made. No matter how phandles are allocated from dtc
-the run time loader must apply an offset to each phandle in every dynamic
-DT object loaded. The __local_fixups__ node records the offset relative to the
-start of every local reference within that property so that the loader can apply
-the offset.
diff --git a/contrib/dtc/Documentation/dtc-paper.bib b/contrib/dtc/Documentation/dtc-paper.bib
deleted file mode 100644
index d01e2ff9e9a5..000000000000
--- a/contrib/dtc/Documentation/dtc-paper.bib
+++ /dev/null
@@ -1,43 +0,0 @@
-@STRING{pub-IEEE = "IEEE Computer Society"}
-@STRING{pub-IEEE:adr = "345 E. 47th St, New York, NY 10017, USA"}
-
-@BOOK{IEEE1275,
-	key = "IEEE1275",
-	title = "{IEEE} {S}tandard for {B}oot ({I}nitialization {C}onfiguration) {F}irmware: {C}ore {R}equirements and {P}ractices",
-	publisher =    pub-IEEE,
-	address =      pub-IEEE:adr,
-	series = "IEEE Std 1275-1994",
-	year = 1994,
-}
-
-@BOOK{IEEE1275-pci,
-	key = "IEEE1275-pci",
-	title = "{PCI} {B}us {B}inding to: {IEEE} {S}td 1275-1994 {S}tandard for {B}oot ({I}nitialization {C}onfiguration) {F}irmware",
-	publisher =    pub-IEEE,
-	address =      pub-IEEE:adr,
-	note = "Revision 2.1",
-	year = 1998,
-}
-
-@MISC{noof1,
-	author = "Benjamin Herrenschmidt",
-	title = "Booting the {L}inux/ppc kernel without {O}pen {F}irmware",
-	month = may,
-	year = 2005,
-	note = "v0.1, \url{http://ozlabs.org/pipermail/linuxppc64-dev/2005-May/004073.html}",
-}
-
-@MISC{noof5,
-	author = "Benjamin Herrenschmidt",
-	title = "Booting the {L}inux/ppc kernel without {O}pen {F}irmware",
-	month = nov,
-	year = 2005,
-	note = "v0.5, \url{http://ozlabs.org/pipermail/linuxppc64-dev/2005-December/006994.html}",
-}
-
-@MISC{dtcgit,
-	author = "David Gibson et al.",
-	title = "\dtc{}",
-	howpublished = "git tree",
-	note = "\url{http://ozlabs.org/~dgibson/dtc/dtc.git}",
-}
diff --git a/contrib/dtc/Documentation/dtc-paper.tex b/contrib/dtc/Documentation/dtc-paper.tex
deleted file mode 100644
index 4494226d86bd..000000000000
--- a/contrib/dtc/Documentation/dtc-paper.tex
+++ /dev/null
@@ -1,597 +0,0 @@
-\documentclass[a4paper,twocolumn]{article}
-
-\usepackage{abstract}
-\usepackage{xspace}
-\usepackage{amssymb}
-\usepackage{latexsym}
-\usepackage{tabularx}
-\usepackage[T1]{fontenc}
-\usepackage{calc}
-\usepackage{listings}
-\usepackage{color}
-\usepackage{url}
-
-\title{Device trees everywhere}
-
-\author{David Gibson \texttt{<{dwg}{@}{au1.ibm.com}>}\\
-  Benjamin Herrenschmidt \texttt{<{benh}{@}{kernel.crashing.org}>}\\
-  \emph{OzLabs, IBM Linux Technology Center}}
-
-\newcommand{\R}{\textsuperscript{\textregistered}\xspace}
-\newcommand{\tm}{\textsuperscript{\texttrademark}\xspace}
-\newcommand{\tge}{$\geqslant$}
-%\newcommand{\ditto}{\textquotedbl\xspace}
-
-\newcommand{\fixme}[1]{$\bigstar$\emph{\textbf{\large #1}}$\bigstar$\xspace}
-
-\newcommand{\ppc}{\mbox{PowerPC}\xspace}
-\newcommand{\of}{Open Firmware\xspace}
-\newcommand{\benh}{Ben Herrenschmidt\xspace}
-\newcommand{\kexec}{\texttt{kexec()}\xspace}
-\newcommand{\dtbeginnode}{\texttt{OF\_DT\_BEGIN\_NODE\xspace}}
-\newcommand{\dtendnode}{\texttt{OF\_DT\_END\_NODE\xspace}}
-\newcommand{\dtprop}{\texttt{OF\_DT\_PROP\xspace}}
-\newcommand{\dtend}{\texttt{OF\_DT\_END\xspace}}
-\newcommand{\dtc}{\texttt{dtc}\xspace}
-\newcommand{\phandle}{\texttt{linux,phandle}\xspace}
-\begin{document}
-
-\maketitle
-
-\begin{abstract}
-  We present a method for booting a \ppc{}\R Linux\R kernel on an
-  embedded machine.  To do this, we supply the kernel with a compact
-  flattened-tree representation of the system's hardware based on the
-  device tree supplied by Open Firmware on IBM\R servers and Apple\R
-  Power Macintosh\R machines.
-
-  The ``blob'' representing the device tree can be created using \dtc
-  --- the Device Tree Compiler --- that turns a simple text
-  representation of the tree into the compact representation used by
-  the kernel.  The compiler can produce either a binary ``blob'' or an
-  assembler file ready to be built into a firmware or bootwrapper
-  image.
-
-  This flattened-tree approach is now the only supported method of
-  booting a \texttt{ppc64} kernel without Open Firmware, and we plan
-  to make it the only supported method for all \texttt{powerpc}
-  kernels in the future.
-\end{abstract}
-
-\section{Introduction}
-
-\subsection{OF and the device tree}
-
-Historically, ``everyday'' \ppc machines have booted with the help of
-\of (OF), a firmware environment defined by IEEE1275 \cite{IEEE1275}.
-Among other boot-time services, OF maintains a device tree that
-describes all of the system's hardware devices and how they're
-connected.  During boot, before taking control of memory management,
-the Linux kernel uses OF calls to scan the device tree and transfer it
-to an internal representation that is used at run time to look up
-various device information.
-
-The device tree consists of nodes representing devices or
-buses\footnote{Well, mostly.  There are a few special exceptions.}.
-Each node contains \emph{properties}, name--value pairs that give
-information about the device.  The values are arbitrary byte strings,
-and for some properties, they contain tables or other structured
-information.
-
-\subsection{The bad old days}
-
-Embedded systems, by contrast, usually have a minimal firmware that
-might supply a few vital system parameters (size of RAM and the like),
-but nothing as detailed or complete as the OF device tree.  This has
-meant that the various 32-bit \ppc embedded ports have required a
-variety of hacks spread across the kernel to deal with the lack of
-device tree.  These vary from specialised boot wrappers to parse
-parameters (which are at least reasonably localised) to
-CONFIG-dependent hacks in drivers to override normal probe logic with
-hardcoded addresses for a particular board.  As well as being ugly of
-itself, such CONFIG-dependent hacks make it hard to build a single
-kernel image that supports multiple embedded machines.
-
-Until relatively recently, the only 64-bit \ppc machines without OF
-were legacy (pre-POWER5\R) iSeries\R machines.  iSeries machines often
-only have virtual IO devices, which makes it quite simple to work
-around the lack of a device tree.  Even so, the lack means the iSeries
-boot sequence must be quite different from the pSeries or Macintosh,
-which is not ideal.
-
-The device tree also presents a problem for implementing \kexec.  When
-the kernel boots, it takes over full control of the system from OF,
-even re-using OF's memory.  So, when \kexec comes to boot another
-kernel, OF is no longer around for the second kernel to query.
-
-\section{The Flattened Tree}
-
-In May 2005 \benh implemented a new approach to handling the device
-tree that addresses all these problems.  When booting on OF systems,
-the first thing the kernel runs is a small piece of code in
-\texttt{prom\_init.c}, which executes in the context of OF.  This code
-walks the device tree using OF calls, and transcribes it into a
-compact, flattened format.  The resulting device tree ``blob'' is then
-passed to the kernel proper, which eventually unflattens the tree into
-its runtime form.  This blob is the only data communicated between the
-\texttt{prom\_init.c} bootstrap and the rest of the kernel.
-
-When OF isn't available, either because the machine doesn't have it at
-all or because \kexec has been used, the kernel instead starts
-directly from the entry point taking a flattened device tree.  The
-device tree blob must be passed in from outside, rather than generated
-by part of the kernel from OF.  For \kexec, the userland
-\texttt{kexec} tools build the blob from the runtime device tree
-before invoking the new kernel.  For embedded systems the blob can
-come either from the embedded bootloader, or from a specialised
-version of the \texttt{zImage} wrapper for the system in question.
-
-\subsection{Properties of the flattened tree}
-
-The flattened tree format should be easy to handle, both for the
-kernel that parses it and the bootloader that generates it.  In
-particular, the following properties are desirable:
-
-\begin{itemize}
-\item \emph{relocatable}: the bootloader or kernel should be able to
-  move the blob around as a whole, without needing to parse or adjust
-  its internals.  In practice that means we must not use pointers
-  within the blob.
-\item \emph{insert and delete}: sometimes the bootloader might want to
-  make tweaks to the flattened tree, such as deleting or inserting a
-  node (or whole subtree).  It should be possible to do this without
-  having to effectively regenerate the whole flattened tree.  In
-  practice this means limiting the use of internal offsets in the blob
-  that need recalculation if a section is inserted or removed with
-  \texttt{memmove()}.
-\item \emph{compact}: embedded systems are frequently short of
-  resources, particularly RAM and flash memory space.  Thus, the tree
-  representation should be kept as small as conveniently possible.
-\end{itemize}
-
-\subsection{Format of the device tree blob}
-\label{sec:format}
-
-\begin{figure}[htb!]
-  \centering
-  \footnotesize
-  \begin{tabular}{r|c|l}
-    \multicolumn{1}{r}{\textbf{Offset}}& \multicolumn{1}{c}{\textbf{Contents}} \\\cline{2-2}
-    \texttt{0x00} & \texttt{0xd00dfeed} & magic number \\\cline{2-2}
-    \texttt{0x04} & \emph{totalsize} \\\cline{2-2}
-    \texttt{0x08} & \emph{off\_struct} & \\\cline{2-2}
-    \texttt{0x0C} & \emph{off\_strs} & \\\cline{2-2}
-    \texttt{0x10} & \emph{off\_rsvmap} & \\\cline{2-2}
-    \texttt{0x14} & \emph{version} \\\cline{2-2}
-    \texttt{0x18} & \emph{last\_comp\_ver} & \\\cline{2-2}
-    \texttt{0x1C} & \emph{boot\_cpu\_id} & \tge v2 only\\\cline{2-2}
-    \texttt{0x20} & \emph{size\_strs} & \tge v3 only\\\cline{2-2}
-    \multicolumn{1}{r}{\vdots} & \multicolumn{1}{c}{\vdots} & \\\cline{2-2}
-    \emph{off\_rsvmap} & \emph{address0} & memory reserve \\
-    + \texttt{0x04} & ...& table \\\cline{2-2}
-    + \texttt{0x08} & \emph{len0} & \\
-    + \texttt{0x0C} & ...& \\\cline{2-2}
-    \vdots & \multicolumn{1}{c|}{\vdots} & \\\cline{2-2}
-    & \texttt{0x00000000}- & end marker\\
-    & \texttt{00000000} & \\\cline{2-2}
-    & \texttt{0x00000000}- & \\
-    & \texttt{00000000} & \\\cline{2-2}
-    \multicolumn{1}{r}{\vdots} & \multicolumn{1}{c}{\vdots} & \\\cline{2-2}
-    \emph{off\_strs} & \texttt{'n' 'a' 'm' 'e'} & strings block \\
-    + \texttt{0x04} & \texttt{~0~ 'm' 'o' 'd'} & \\
-    + \texttt{0x08} & \texttt{'e' 'l' ~0~ \makebox[\widthof{~~~}]{\textrm{...}}} & \\
-    \vdots & \multicolumn{1}{c|}{\vdots} & \\\cline{2-2}
-    \multicolumn{1}{r}{+ \emph{size\_strs}} \\
-    \multicolumn{1}{r}{\vdots} & \multicolumn{1}{c}{\vdots} & \\\cline{2-2}
-    \emph{off\_struct} & \dtbeginnode & structure block \\\cline{2-2}
-    + \texttt{0x04} & \texttt{'/' ~0~ ~0~ ~0~}  & root node\\\cline{2-2}
-    + \texttt{0x08} & \dtprop & \\\cline{2-2}
-    + \texttt{0x0C} & \texttt{0x00000005} & ``\texttt{model}''\\\cline{2-2}
-    + \texttt{0x10} & \texttt{0x00000008} & \\\cline{2-2}
-    + \texttt{0x14} & \texttt{'M' 'y' 'B' 'o'} & \\
-    + \texttt{0x18} & \texttt{'a' 'r' 'd' ~0~} & \\\cline{2-2}
-    \vdots & \multicolumn{1}{c|}{\vdots} & \\\cline{2-2}
-    & \texttt{\dtendnode} \\\cline{2-2}
-    & \texttt{\dtend} \\\cline{2-2}
-    \multicolumn{1}{r}{\vdots} & \multicolumn{1}{c}{\vdots} & \\\cline{2-2}
-    \multicolumn{1}{r}{\emph{totalsize}} \\
-  \end{tabular}
-  \caption{Device tree blob layout}
-  \label{fig:blob-layout}
-\end{figure}
-
-The format for the blob we devised, was first described on the
-\texttt{linuxppc64-dev} mailing list in \cite{noof1}.  The format has
-since evolved through various revisions, and the current version is
-included as part of the \dtc (see \S\ref{sec:dtc}) git tree,
-\cite{dtcgit}.
-
-Figure \ref{fig:blob-layout} shows the layout of the blob of data
-containing the device tree.  It has three sections of variable size:
-the \emph{memory reserve table}, the \emph{structure block} and the
-\emph{strings block}.  A small header gives the blob's size and
-version and the locations of the three sections, plus a handful of
-vital parameters used during early boot.
-
-The memory reserve map section gives a list of regions of memory that
-the kernel must not use\footnote{Usually such ranges contain some data
-structure initialised by the firmware that must be preserved by the
-kernel.}.  The list is represented as a simple array of (address,
-size) pairs of 64 bit values, terminated by a zero size entry.  The
-strings block is similarly simple, consisting of a number of
-null-terminated strings appended together, which are referenced from
-the structure block as described below.
-
-The structure block contains the device tree proper.  Each node is
-introduced with a 32-bit \dtbeginnode tag, followed by the node's name
-as a null-terminated string, padded to a 32-bit boundary.  Then
-follows all of the properties of the node, each introduced with a
-\dtprop tag, then all of the node's subnodes, each introduced with
-their own \dtbeginnode tag.  The node ends with an \dtendnode tag, and
-after the \dtendnode for the root node is an \dtend tag, indicating
-the end of the whole tree\footnote{This is redundant, but included for
-ease of parsing.}.  The structure block starts with the \dtbeginnode
-introducing the description of the root node (named \texttt{/}).
-
-Each property, after the \dtprop, has a 32-bit value giving an offset
-from the beginning of the strings block at which the property name is
-stored.  Because it's common for many nodes to have properties with
-the same name, this approach can substantially reduce the total size
-of the blob.  The name offset is followed by the length of the
-property value (as a 32-bit value) and then the data itself padded to
-a 32-bit boundary.
-
-\subsection{Contents of the tree}
-\label{sec:treecontents}
-
-Having seen how to represent the device tree structure as a flattened
-blob, what actually goes into the tree?  The short answer is ``the
-same as an OF tree''.  On OF systems, the flattened tree is
-transcribed directly from the OF device tree, so for simplicity we
-also use OF conventions for the tree on other systems.
-
-In many cases a flat tree can be simpler than a typical OF provided
-device tree.  The flattened tree need only provide those nodes and
-properties that the kernel actually requires; the flattened tree
-generally need not include devices that the kernel can probe itself.
-For example, an OF device tree would normally include nodes for each
-PCI device on the system.  A flattened tree need only include nodes
-for the PCI host bridges; the kernel will scan the buses thus
-described to find the subsidiary devices.  The device tree can include
-nodes for devices where the kernel needs extra information, though:
-for example, for ISA devices on a subsidiary PCI/ISA bridge, or for
-devices with unusual interrupt routing.
-
-Where they exist, we follow the IEEE1275 bindings that specify how to
-describe various buses in the device tree (for example,
-\cite{IEEE1275-pci} describe how to represent PCI devices).  The
-standard has not been updated for a long time, however, and lacks
-bindings for many modern buses and devices.  In particular, embedded
-specific devices such as the various System-on-Chip buses are not
-covered.  We intend to create new bindings for such buses, in keeping
-with the general conventions of IEEE1275 (a simple such binding for a
-System-on-Chip bus was included in \cite{noof5} a revision of
-\cite{noof1}).
-
-One complication arises for representing ``phandles'' in the flattened
-tree.  In OF, each node in the tree has an associated phandle, a
-32-bit integer that uniquely identifies the node\footnote{In practice
-usually implemented as a pointer or offset within OF memory.}.  This
-handle is used by the various OF calls to query and traverse the tree.
-Sometimes phandles are also used within the tree to refer to other
-nodes in the tree.  For example, devices that produce interrupts
-generally have an \texttt{interrupt-parent} property giving the
-phandle of the interrupt controller that handles interrupts from this
-device.  Parsing these and other interrupt related properties allows
-the kernel to build a complete representation of the system's
-interrupt tree, which can be quite different from the tree of bus
-connections.
-
-In the flattened tree, a node's phandle is represented by a special
-\phandle property.  When the kernel generates a flattened tree from
-OF, it adds a \phandle property to each node, containing the phandle
-retrieved from OF.  When the tree is generated without OF, however,
-only nodes that are actually referred to by phandle need to have this
-property.
-
-Another complication arises because nodes in an OF tree have two
-names.  First they have the ``unit name'', which is how the node is
-referred to in an OF path.  The unit name generally consists of a
-device type followed by an \texttt{@} followed by a \emph{unit
-address}.  For example \texttt{/memory@0} is the full path of a memory
-node at address 0, \texttt{/ht@0,f2000000/pci@1} is the path of a PCI
-bus node, which is under a HyperTransport\tm bus node.  The form of
-the unit address is bus dependent, but is generally derived from the
-node's \texttt{reg} property.  In addition, nodes have a property,
-\texttt{name}, whose value is usually equal to the first path of the
-unit name. For example, the nodes in the previous example would have
-\texttt{name} properties equal to \texttt{memory} and \texttt{pci},
-respectively.  To save space in the blob, the current version of the
-flattened tree format only requires the unit names to be present.
-When the kernel unflattens the tree, it automatically generates a
-\texttt{name} property from the node's path name.
-
-\section{The Device Tree Compiler}
-\label{sec:dtc}
-
-\begin{figure}[htb!]
-  \centering
-  \begin{lstlisting}[frame=single,basicstyle=\footnotesize\ttfamily,
-    tabsize=3,numbers=left,xleftmargin=2em]
-/memreserve/ 0x20000000-0x21FFFFFF;
-
-/ {
-	model = "MyBoard";
-	compatible = "MyBoardFamily";
-	#address-cells = <2>;
-	#size-cells = <2>;
-
-	cpus {
-		#address-cells = <1>;
-		#size-cells = <0>;
-		PowerPC,970@0 {
-			device_type = "cpu";
-			reg = <0>;
-			clock-frequency = <5f5e1000>;
-			timebase-frequency = <1FCA055>;
-			linux,boot-cpu;
-			i-cache-size = <10000>;
-			d-cache-size = <8000>;
-		};
-	};
-
-	memory@0 {
-		device_type = "memory";
-		memreg: reg = <00000000 00000000
-		               00000000 20000000>;
-	};
-
-	mpic@0x3fffdd08400 {
-		/* Interrupt controller */
-		/* ... */
-	};
-
-	pci@40000000000000 {
-		/* PCI host bridge */
-		/* ... */
-	};
-
-	chosen {
-		bootargs = "root=/dev/sda2";
-		linux,platform = <00000600>;
-		interrupt-controller =
-			< &/mpic@0x3fffdd08400 >;
-	};
-};
-\end{lstlisting}
-  \caption{Example \dtc source}
-  \label{fig:dts}
-\end{figure}
-
-As we've seen, the flattened device tree format provides a convenient
-way of communicating device tree information to the kernel.  It's
-simple for the kernel to parse, and simple for bootloaders to
-manipulate.  On OF systems, it's easy to generate the flattened tree
-by walking the OF maintained tree.  However, for embedded systems, the
-flattened tree must be generated from scratch.
-
-Embedded bootloaders are generally built for a particular board.  So,
-it's usually possible to build the device tree blob at compile time
-and include it in the bootloader image.  For minor revisions of the
-board, the bootloader can contain code to make the necessary tweaks to
-the tree before passing it to the booted kernel.
-
-The device trees for embedded boards are usually quite simple, and
-it's possible to hand construct the necessary blob by hand, but doing
-so is tedious.  The ``device tree compiler'', \dtc{}\footnote{\dtc can
-be obtained from \cite{dtcgit}.}, is designed to make creating device
-tree blobs easier by converting a text representation of the tree
-into the necessary blob.
-
-\subsection{Input and output formats}
-
-As well as the normal mode of compiling a device tree blob from text
-source, \dtc can convert a device tree between a number of
-representations.  It can take its input in one of three different
-formats:
-\begin{itemize}
-\item source, the normal case.  The device tree is described in a text
-  form, described in \S\ref{sec:dts}.
-\item blob (\texttt{dtb}), the flattened tree format described in
-  \S\ref{sec:format}.  This mode is useful for checking a pre-existing
-  device tree blob.
-\item filesystem (\texttt{fs}), input is a directory tree in the
-  layout of \texttt{/proc/device-tree} (roughly, a directory for each
-  node in the device tree, a file for each property).  This is useful
-  for building a blob for the device tree in use by the currently
-  running kernel.
-\end{itemize}
-
-In addition, \dtc can output the tree in one of three different
-formats:
-\begin{itemize}
-\item blob (\texttt{dtb}), as in \S\ref{sec:format}.  The most
-  straightforward use of \dtc is to compile from ``source'' to
-  ``blob'' format.
-\item source (\texttt{dts}), as in \S\ref{sec:dts}.  If used with blob
-  input, this allows \dtc to act as a ``decompiler''.
-\item assembler source (\texttt{asm}).  \dtc can produce an assembler
-  file, which will assemble into a \texttt{.o} file containing the
-  device tree blob, with symbols giving the beginning of the blob and
-  its various subsections.  This can then be linked directly into a
-  bootloader or firmware image.
-\end{itemize}
-
-For maximum applicability, \dtc can both read and write any of the
-existing revisions of the blob format.  When reading, \dtc takes the
-version from the blob header, and when writing it takes a command line
-option specifying the desired version.  It automatically makes any
-necessary adjustments to the tree that are necessary for the specified
-version.  For example, formats before 0x10 require each node to have
-an explicit \texttt{name} property.  When \dtc creates such a blob, it
-will automatically generate \texttt{name} properties from the unit
-names.
-
-\subsection{Source format}
-\label{sec:dts}
-
-The ``source'' format for \dtc is a text description of the device
-tree in a vaguely C-like form.  Figure \ref{fig:dts} shows an
-example.  The file starts with \texttt{/memreserve/} directives, which
-gives address ranges to add to the output blob's memory reserve table,
-then the device tree proper is described.
-
-Nodes of the tree are introduced with the node name, followed by a
-\texttt{\{} ... \texttt{\};} block containing the node's properties
-and subnodes.  Properties are given as just {\emph{name} \texttt{=}
-  \emph{value}\texttt{;}}.  The property values can be given in any
-of three forms:
-\begin{itemize}
-\item \emph{string} (for example, \texttt{"MyBoard"}).  The property
-  value is the given string, including terminating NULL.  C-style
-  escapes (\verb+\t+, \verb+\n+, \verb+\0+ and so forth) are allowed.
-\item \emph{cells} (for example, \texttt{<0 8000 f0000000>}).  The
-  property value is made up of a list of 32-bit ``cells'', each given
-  as a hex value.
-\item \emph{bytestring} (for example, \texttt{[1234abcdef]}).  The
-  property value is given as a hex bytestring.
-\end{itemize}
-
-Cell properties can also contain \emph{references}.  Instead of a hex
-number, the source can give an ampersand (\texttt{\&}) followed by the
-full path to some node in the tree.  For example, in Figure
-\ref{fig:dts}, the \texttt{/chosen} node has an
-\texttt{interrupt-controller} property referring to the interrupt
-controller described by the node \texttt{/mpic@0x3fffdd08400}.  In the
-output tree, the value of the referenced node's phandle is included in
-the property.  If that node doesn't have an explicit phandle property,
-\dtc will automatically create a unique phandle for it.  This approach
-makes it easy to create interrupt trees without having to explicitly
-assign and remember phandles for the various interrupt controller
-nodes.
-
-The \dtc source can also include ``labels'', which are placed on a
-particular node or property.  For example, Figure \ref{fig:dts} has a
-label ``\texttt{memreg}'' on the \texttt{reg} property of the node
-\texttt{/memory@0}.  When using assembler output, corresponding labels
-in the output are generated, which will assemble into symbols
-addressing the part of the blob with the node or property in question.
-This is useful for the common case where an embedded board has an
-essentially fixed device tree with a few variable properties, such as
-the size of memory.  The bootloader for such a board can have a device
-tree linked in, including a symbol referring to the right place in the
-blob to update the parameter with the correct value determined at
-runtime.
-
-\subsection{Tree checking}
-
-Between reading in the device tree and writing it out in the new
-format, \dtc performs a number of checks on the tree:
-\begin{itemize}
-\item \emph{syntactic structure}:  \dtc checks that node and property
-  names contain only allowed characters and meet length restrictions.
-  It checks that a node does not have multiple properties or subnodes
-  with the same name.
-\item \emph{semantic structure}: In some cases, \dtc checks that
-  properties whose contents are defined by convention have appropriate
-  values.  For example, it checks that \texttt{reg} properties have a
-  length that makes sense given the address forms specified by the
-  \texttt{\#address-cells} and \texttt{\#size-cells} properties.  It
-  checks that properties such as \texttt{interrupt-parent} contain a
-  valid phandle.
-\item \emph{Linux requirements}:  \dtc checks that the device tree
-  contains those nodes and properties that are required by the Linux
-  kernel to boot correctly.
-\end{itemize}
-
-These checks are useful to catch simple problems with the device tree,
-rather than having to debug the results on an embedded kernel.  With
-the blob input mode, it can also be used for diagnosing problems with
-an existing blob.
-
-\section{Future Work}
-
-\subsection{Board ports}
-
-The flattened device tree has always been the only supported way to
-boot a \texttt{ppc64} kernel on an embedded system.  With the merge of
-\texttt{ppc32} and \texttt{ppc64} code it has also become the only
-supported way to boot any merged \texttt{powerpc} kernel, 32-bit or
-64-bit.  In fact, the old \texttt{ppc} architecture exists mainly just
-to support the old ppc32 embedded ports that have not been migrated
-to the flattened device tree approach.  We plan to remove the
-\texttt{ppc} architecture eventually, which will mean porting all the
-various embedded boards to use the flattened device tree.
-
-\subsection{\dtc features}
-
-While it is already quite usable, there are a number of extra features
-that \dtc could include to make creating device trees more convenient:
-\begin{itemize}
-\item \emph{better tree checking}: Although \dtc already performs a
-  number of checks on the device tree, they are rather haphazard.  In
-  many cases \dtc will give up after detecting a minor error early and
-  won't pick up more interesting errors later on.  There is a
-  \texttt{-f} parameter that forces \dtc to generate an output tree
-  even if there are errors.  At present, this needs to be used more
-  often than one might hope, because \dtc is bad at deciding which
-  errors should really be fatal, and which rate mere warnings.
-\item \emph{binary include}: Occasionally, it is useful for the device
-  tree to incorporate as a property a block of binary data for some
-  board-specific purpose.  For example, many of Apple's device trees
-  incorporate bytecode drivers for certain platform devices.  \dtc's
-  source format ought to allow this by letting a property's value be
-  read directly from a binary file.
-\item \emph{macros}: it might be useful for \dtc to implement some
-  sort of macros so that a tree containing a number of similar devices
-  (for example, multiple identical ethernet controllers or PCI buses)
-  can be written more quickly.  At present, this can be accomplished
-  in part by running the source file through CPP before compiling with
-  \dtc.  It's not clear whether ``native'' support for macros would be
-  more useful.
-\end{itemize}
-
-\bibliographystyle{amsplain}
-\bibliography{dtc-paper}
-
-\section*{About the authors}
-
-David Gibson has been a member of the IBM Linux Technology Center,
-working from Canberra, Australia, since 2001.  Recently he has worked
-on Linux hugepage support and performance counter support for ppc64,
-as well as the device tree compiler.  In the past, he has worked on
-bringup for various ppc and ppc64 embedded systems, the orinoco
-wireless driver, ramfs, and a userspace checkpointing system
-(\texttt{esky}).
-
-Benjamin Herrenschmidt was a MacOS developer for about 10 years, but
-ultimately saw the light and installed Linux on his Apple PowerPC
-machine.  After writing a bootloader, BootX, for it in 1998, he
-started contributing to the PowerPC Linux port in various areas,
-mostly around the support for Apple machines. He became official
-PowerMac maintainer in 2001. In 2003, he joined the IBM Linux
-Technology Center in Canberra, Australia, where he ported the 64 bit
-PowerPC kernel to Apple G5 machines and the Maple embedded board,
-among others things.  He's a member of the ppc64 development ``team''
-and one of his current goals is to make the integration of embedded
-platforms smoother and more maintainable than in the 32-bit PowerPC
-kernel.
-
-\section*{Legal Statement}
-
-This work represents the view of the author and does not necessarily
-represent the view of IBM.
-
-IBM, \ppc, \ppc Architecture, POWER5, pSeries and iSeries are
-trademarks or registered trademarks of International Business Machines
-Corporation in the United States and/or other countries.
-
-Apple and Power Macintosh are a registered trademarks of Apple
-Computer Inc. in the United States, other countries, or both.
-
-Linux is a registered trademark of Linus Torvalds.
-
-Other company, product, and service names may be trademarks or service
-marks of others.
-
-\end{document}
diff --git a/contrib/dtc/Documentation/dts-format.txt b/contrib/dtc/Documentation/dts-format.txt
deleted file mode 100644
index 41741dffca40..000000000000
--- a/contrib/dtc/Documentation/dts-format.txt
+++ /dev/null
@@ -1,122 +0,0 @@
-Device Tree Source Format (version 1)
-=====================================
-
-The Device Tree Source (DTS) format is a textual representation of a
-device tree in a form that can be processed by dtc into a binary
-device tree in the form expected by the kernel.  The description below
-is not a formal syntax definition of DTS, but describes the basic
-constructs used to represent device trees.
-
-Node and property definitions
------------------------------
-
-Device tree nodes are defined with a node name and unit address with
-braces marking the start and end of the node definition.  They may be
-preceded by a label.
-
-	[label:] node-name[@unit-address] {
-		[properties definitions]
-		[child nodes]
-	}
-
-Nodes may contain property definitions and/or child node
-definitions. If both are present, properties must come before child
-nodes.
-
-Property definitions are name value pairs in the form:
-	[label:] property-name = value;
-except for properties with empty (zero length) value which have the
-form:
-	[label:] property-name;
-
-Property values may be defined as an array of 8, 16, 32, or 64-bit integer
-elements, as NUL-terminated strings, as bytestrings or a combination of these.
-
-* Arrays are represented by angle brackets surrounding a space separated list
-  of C-style integers or character literals.  Array elements default to 32-bits
-  in size.  An array of 32-bit elements is also known as a cell list or a list
-  of cells.  A cell being an unsigned 32-bit integer.
-
-	e.g. interrupts = <17 0xc>;
-
-* A 64-bit value can be represented with two 32-bit elements.
-
-	e.g. clock-frequency = <0x00000001 0x00000000>;
-
-* The storage size of an element can be changed using the /bits/ prefix.  The
-  /bits/ prefix allows for the creation of 8, 16, 32, and 64-bit elements.
-  The resulting array will not be padded to a multiple of the default 32-bit
-  element size.
-
-	e.g. interrupts = /bits/ 8 <17 0xc>;
-	e.g. clock-frequency = /bits/ 64 <0x0000000100000000>;
-
-* A NUL-terminated string value is represented using double quotes
-  (the property value is considered to include the terminating NUL
-  character).
-
-	e.g. compatible = "simple-bus";
-
-* A bytestring is enclosed in square brackets [] with each byte
-  represented by two hexadecimal digits.  Spaces between each byte are
-  optional.
-
-	e.g. local-mac-address = [00 00 12 34 56 78]; or equivalently
-	     local-mac-address = [000012345678];
-
-* Values may have several comma-separated components, which are
-  concatenated together.
-	e.g. compatible = "ns16550", "ns8250";
-	     example = <0xf00f0000 19>, "a strange property format";
-
-* In an array a reference to another node will be expanded to that node's
-  phandle.  References may by '&' followed by a node's label:
-	e.g. interrupt-parent = < &mpic >;
-  or they may be '&' followed by a node's full path in braces:
-	e.g. interrupt-parent = < &{/soc/interrupt-controller@40000} >;
-  References are only permitted in arrays that have an element size of
-  32-bits.
-
-* Outside an array, a reference to another node will be expanded to that
-  node's full path.
-	e.g. ethernet0 = &EMAC0;
-
-* Labels may also appear before or after any component of a property
-  value, or between elements of an array, or between bytes of a bytestring.
-	e.g. reg = reglabel: <0 sizelabel: 0x1000000>;
-	e.g. prop = [ab cd ef byte4: 00 ff fe];
-	e.g. str = start: "string value" end: ;
-
-
-File layout
------------
-
-Version 1 DTS files have the overall layout:
-	/dts-v1/;
-
-	[memory reservations]
-
-	/ {
-		[property definitions]
-		[child nodes]
-	};
-
-* The "/dts-v1/;" must be present to identify the file as a version 1
-  DTS (dts files without this tag will be treated by dtc as being in
-  the obsolete "version 0", which uses a different format for integers
-  amongst other small but incompatible changes).
-
-* Memory reservations define an entry for the device tree blob's
-  memory reservation table.  They have the form:
-	e.g. /memreserve/ <address> <length>;
-  Where <address> and <length> are 64-bit C-style integers.
-
-* The / { ... }; section defines the root node of the device tree.
-
-* C style (/* ... */) and C++ style (// ...) comments are supported.
-
-
-
-	-- David Gibson <david@gibson.dropbear.id.au>
-	-- Yoder Stuart <stuart.yoder@freescale.com>
-	-- Anton Staaf <robotboy@chromium.org>
diff --git a/contrib/dtc/Documentation/manual.txt b/contrib/dtc/Documentation/manual.txt
deleted file mode 100644
index 2f073501f82b..000000000000
--- a/contrib/dtc/Documentation/manual.txt
+++ /dev/null
@@ -1,677 +0,0 @@
-Device Tree Compiler Manual
-===========================
-
-I - "dtc", the device tree compiler
-    1) Obtaining Sources
-    1.1) Submitting Patches
-    2) Description
-    3) Command Line
-    4) Source File
-    4.1) Overview
-    4.2) Properties
-    4.3) Labels and References
-
-II - The DT block format
-    1) Header
-    2) Device tree generalities
-    3) Device tree "structure" block
-    4) Device tree "strings" block
-
-
-III - libfdt
-
-IV - Utility Tools
-    1) convert-dtsv0 -- Conversion to Version 1
-    1) fdtdump
-
-
-I - "dtc", the device tree compiler
-===================================
-
-1) Sources
-
-Source code for the Device Tree Compiler can be found at git.kernel.org.
-
-The upstream repository is here:
-
-    git://git.kernel.org/pub/scm/utils/dtc/dtc.git
-    https://git.kernel.org/pub/scm/utils/dtc/dtc.git
-
-The gitweb interface for the upstream respository is:
-
-    https://git.kernel.org/cgit/utils/dtc/dtc.git/
-
-1.1) Submitting Patches
-
-Patches should be sent to the maintainers:
-	David Gibson <david@gibson.dropbear.id.au>
-	Jon Loeliger <jdl@jdl.com>
-and CCed to <devicetree-compiler@vger.kernel.org>.
-
-2) Description
-
-The Device Tree Compiler, dtc, takes as input a device-tree in
-a given format and outputs a device-tree in another format.
-Typically, the input format is "dts", a human readable source
-format, and creates a "dtb", or binary format as output.
-
-The currently supported Input Formats are:
-
-    - "dtb": "blob" format.  A flattened device-tree block with
-        header in one binary blob.
-
-    - "dts": "source" format.  A text file containing a "source"
-        for a device-tree.
-
-    - "fs" format.  A representation equivalent to the output of
-        /proc/device-tree  where nodes are directories and
-	properties are files.
-
-The currently supported Output Formats are:
-
-     - "dtb": "blob" format
-
-     - "dts": "source" format
-
-     - "asm": assembly language file.  A file that can be sourced
-        by gas to generate a device-tree "blob".  That file can
-        then simply be added to your Makefile.  Additionally, the
-        assembly file exports some symbols that can be used.
-
-
-3) Command Line
-
-The syntax of the dtc command line is:
-
-    dtc [options] [<input_filename>]
-
-Options:
-
-    <input_filename>
-	The name of the input source file.  If no <input_filename>
-	or "-" is given, stdin is used.
-
-    -b <number>
-	Set the physical boot cpu.
-
-    -f
-	Force.  Try to produce output even if the input tree has errors.
-
-    -h
-	Emit a brief usage and help message.
-
-    -I <input_format>
-	The source input format, as listed above.
-
-    -o <output_filename>
-	The name of the generated output file.  Use "-" for stdout.
-
-    -O <output_format>
-	The generated output format, as listed above.
-
-    -d <dependency_filename>
-	Generate a dependency file during compilation.
-
-    -q
-	Quiet: -q suppress warnings, -qq errors, -qqq all
-
-    -R <number>
-	Make space for <number> reserve map entries
-	Relevant for dtb and asm output only.
-
-    -@
-	Generates a __symbols__ node at the root node of the resulting blob
-	for any node labels used, and for any local references using phandles
-	it also generates a __local_fixups__ node that tracks them.
-
-	When using the /plugin/ tag all unresolved label references to
-	be tracked in the __fixups__ node, making dynamic resolution possible.
-
-    -A
-	Generate automatically aliases for all node labels. This is similar to
-	the -@ option (the __symbols__ node contain identical information) but
-	the semantics are slightly different since no phandles are automatically
-	generated for labeled nodes.
-
-    -S <bytes>
-	Ensure the blob at least <bytes> long, adding additional
-	space if needed.
-
-    -v
-	Print DTC version and exit.
-
-    -V <output_version>
-	Generate output conforming to the given <output_version>.
-	By default the most recent version is generated.
-	Relevant for dtb and asm output only.
-
-
-The <output_version> defines what version of the "blob" format will be
-generated.  Supported versions are 1, 2, 3, 16 and 17.  The default is
-always the most recent version and is likely the highest number.
-
-Additionally, dtc performs various sanity checks on the tree.
-
-
-4) Device Tree Source file
-
-4.1) Overview
-
-Here is a very rough overview of the layout of a DTS source file:
-
-
-    sourcefile:   versioninfo plugindecl list_of_memreserve devicetree
-
-    memreserve:   label 'memreserve' ADDR ADDR ';'
-		| label 'memreserve' ADDR '-' ADDR ';'
-
-    devicetree:   '/' nodedef
-
-    versioninfo:  '/' 'dts-v1' '/' ';'
-
-    plugindecl:   '/' 'plugin' '/' ';'
-                | /* empty */
-
-    nodedef:      '{' list_of_property list_of_subnode '}' ';'
-
-    property:     label PROPNAME '=' propdata ';'
-
-    propdata:     STRING
-		| '<' list_of_cells '>'
-		| '[' list_of_bytes ']'
-
-    subnode:      label nodename nodedef
-
-That structure forms a hierarchical layout of nodes and properties
-rooted at an initial node as:
-
-    / {
-    }
-
-Both classic C style and C++ style comments are supported.
-
-Source files may be directly included using the syntax:
-
-    /include/ "filename"
-
-
-4.2) Properties
-
-Properties are named, possibly labeled, values.  Each value
-is one of:
-
-    - A null-teminated C-like string,
-    - A numeric value fitting in 32 bits,
-    - A list of 32-bit values
-    - A byte sequence
-
-Here are some example property definitions:
-
-    - A property containing a 0 terminated string
-
-	property1 = "string_value";
-
-    - A property containing a numerical 32-bit hexadecimal value
-
-	property2 = <1234abcd>;
-
-    - A property containing 3 numerical 32-bit hexadecimal values
-
-	property3 = <12345678 12345678 deadbeef>;
-
-    - A property whose content is an arbitrary array of bytes
-
-	property4 = [0a 0b 0c 0d de ea ad be ef];
-
-
-Node may contain sub-nodes to obtain a hierarchical structure.
-For example:
-
-    - A child node named "childnode" whose unit name is
-      "childnode at address".  It in turn has a string property
-      called "childprop".
-
-	childnode@addresss {
-	    childprop = "hello\n";
-	};
-
-
-By default, all numeric values are hexadecimal.  Alternate bases
-may be specified using a prefix "d#" for decimal, "b#" for binary,
-and "o#" for octal.
-
-Strings support common escape sequences from C: "\n", "\t", "\r",
-"\(octal value)", "\x(hex value)".
-
-
-4.3) Labels and References
-
-Labels may be applied to nodes or properties.  Labels appear
-before a node name, and are referenced using an ampersand: &label.
-Absolute node path names are also allowed in node references.
-
-In this exmaple, a node is labled "mpic" and then referenced:
-
-    mpic:  interrupt-controller@40000 {
-	...
-    };
-
-    ethernet-phy@3 {
-	interrupt-parent = <&mpic>;
-	...
-    };
-
-And used in properties, lables may appear before or after any value:
-
-    randomnode {
-	prop: string = data: "mystring\n" data_end: ;
-	...
-    };
-
-
-
-II - The DT block format
-========================
-
-This chapter defines the format of the flattened device-tree
-passed to the kernel. The actual content of the device tree
-are described in the kernel documentation in the file
-
-    linux-2.6/Documentation/powerpc/booting-without-of.txt
-
-You can find example of code manipulating that format within
-the kernel.  For example, the file:
-
-	including arch/powerpc/kernel/prom_init.c
-
-will generate a flattened device-tree from the Open Firmware
-representation.  Other utilities such as fs2dt, which is part of
-the kexec tools, will generate one from a filesystem representation.
-Some bootloaders such as U-Boot provide a bit more support by
-using the libfdt code.
-
-For booting the kernel, the device tree block has to be in main memory.
-It has to be accessible in both real mode and virtual mode with no
-mapping other than main memory.  If you are writing a simple flash
-bootloader, it should copy the block to RAM before passing it to
-the kernel.
-
-
-1) Header
----------
-
-The kernel is entered with r3 pointing to an area of memory that is
-roughly described in include/asm-powerpc/prom.h by the structure
-boot_param_header:
-
-    struct boot_param_header {
-        u32     magic;                  /* magic word OF_DT_HEADER */
-        u32     totalsize;              /* total size of DT block */
-        u32     off_dt_struct;          /* offset to structure */
-        u32     off_dt_strings;         /* offset to strings */
-        u32     off_mem_rsvmap;         /* offset to memory reserve map */
-        u32     version;                /* format version */
-        u32     last_comp_version;      /* last compatible version */
-
-        /* version 2 fields below */
-        u32     boot_cpuid_phys;        /* Which physical CPU id we're
-                                           booting on */
-        /* version 3 fields below */
-        u32     size_dt_strings;        /* size of the strings block */
-
-        /* version 17 fields below */
-        u32	size_dt_struct;		/* size of the DT structure block */
-    };
-
-Along with the constants:
-
-    /* Definitions used by the flattened device tree */
-    #define OF_DT_HEADER            0xd00dfeed      /* 4: version,
-						       4: total size */
-    #define OF_DT_BEGIN_NODE        0x1             /* Start node: full name
-						       */
-    #define OF_DT_END_NODE          0x2             /* End node */
-    #define OF_DT_PROP              0x3             /* Property: name off,
-						       size, content */
-    #define OF_DT_END               0x9
-
-All values in this header are in big endian format, the various
-fields in this header are defined more precisely below.  All "offset"
-values are in bytes from the start of the header; that is from the
-value of r3.
-
-   - magic
-
-     This is a magic value that "marks" the beginning of the
-     device-tree block header. It contains the value 0xd00dfeed and is
-     defined by the constant OF_DT_HEADER
-
-   - totalsize
-
-     This is the total size of the DT block including the header. The
-     "DT" block should enclose all data structures defined in this
-     chapter (who are pointed to by offsets in this header). That is,
-     the device-tree structure, strings, and the memory reserve map.
-
-   - off_dt_struct
-
-     This is an offset from the beginning of the header to the start
-     of the "structure" part the device tree. (see 2) device tree)
-
-   - off_dt_strings
-
-     This is an offset from the beginning of the header to the start
-     of the "strings" part of the device-tree
-
-   - off_mem_rsvmap
-
-     This is an offset from the beginning of the header to the start
-     of the reserved memory map. This map is a list of pairs of 64-
-     bit integers. Each pair is a physical address and a size. The
-     list is terminated by an entry of size 0. This map provides the
-     kernel with a list of physical memory areas that are "reserved"
-     and thus not to be used for memory allocations, especially during
-     early initialization. The kernel needs to allocate memory during
-     boot for things like un-flattening the device-tree, allocating an
-     MMU hash table, etc... Those allocations must be done in such a
-     way to avoid overriding critical things like, on Open Firmware
-     capable machines, the RTAS instance, or on some pSeries, the TCE
-     tables used for the iommu. Typically, the reserve map should
-     contain _at least_ this DT block itself (header,total_size). If
-     you are passing an initrd to the kernel, you should reserve it as
-     well. You do not need to reserve the kernel image itself. The map
-     should be 64-bit aligned.
-
-   - version
-
-     This is the version of this structure. Version 1 stops
-     here. Version 2 adds an additional field boot_cpuid_phys.
-     Version 3 adds the size of the strings block, allowing the kernel
-     to reallocate it easily at boot and free up the unused flattened
-     structure after expansion. Version 16 introduces a new more
-     "compact" format for the tree itself that is however not backward
-     compatible. Version 17 adds an additional field, size_dt_struct,
-     allowing it to be reallocated or moved more easily (this is
-     particularly useful for bootloaders which need to make
-     adjustments to a device tree based on probed information). You
-     should always generate a structure of the highest version defined
-     at the time of your implementation. Currently that is version 17,
-     unless you explicitly aim at being backward compatible.
-
-   - last_comp_version
-
-     Last compatible version. This indicates down to what version of
-     the DT block you are backward compatible. For example, version 2
-     is backward compatible with version 1 (that is, a kernel build
-     for version 1 will be able to boot with a version 2 format). You
-     should put a 1 in this field if you generate a device tree of
-     version 1 to 3, or 16 if you generate a tree of version 16 or 17
-     using the new unit name format.
-
-   - boot_cpuid_phys
-
-     This field only exist on version 2 headers. It indicate which
-     physical CPU ID is calling the kernel entry point. This is used,
-     among others, by kexec. If you are on an SMP system, this value
-     should match the content of the "reg" property of the CPU node in
-     the device-tree corresponding to the CPU calling the kernel entry
-     point (see further chapters for more informations on the required
-     device-tree contents)
-
-   - size_dt_strings
-
-     This field only exists on version 3 and later headers.  It
-     gives the size of the "strings" section of the device tree (which
-     starts at the offset given by off_dt_strings).
-
-   - size_dt_struct
-
-     This field only exists on version 17 and later headers.  It gives
-     the size of the "structure" section of the device tree (which
-     starts at the offset given by off_dt_struct).
-
-So the typical layout of a DT block (though the various parts don't
-need to be in that order) looks like this (addresses go from top to
-bottom):
-
-             ------------------------------
-       r3 -> |  struct boot_param_header  |
-             ------------------------------
-             |      (alignment gap) (*)   |
-             ------------------------------
-             |      memory reserve map    |
-             ------------------------------
-             |      (alignment gap)       |
-             ------------------------------
-             |                            |
-             |    device-tree structure   |
-             |                            |
-             ------------------------------
-             |      (alignment gap)       |
-             ------------------------------
-             |                            |
-             |     device-tree strings    |
-             |                            |
-      -----> ------------------------------
-      |
-      |
-      --- (r3 + totalsize)
-
-  (*) The alignment gaps are not necessarily present; their presence
-      and size are dependent on the various alignment requirements of
-      the individual data blocks.
-
-
-2) Device tree generalities
----------------------------
-
-This device-tree itself is separated in two different blocks, a
-structure block and a strings block. Both need to be aligned to a 4
-byte boundary.
-
-First, let's quickly describe the device-tree concept before detailing
-the storage format. This chapter does _not_ describe the detail of the
-required types of nodes & properties for the kernel, this is done
-later in chapter III.
-
-The device-tree layout is strongly inherited from the definition of
-the Open Firmware IEEE 1275 device-tree. It's basically a tree of
-nodes, each node having two or more named properties. A property can
-have a value or not.
-
-It is a tree, so each node has one and only one parent except for the
-root node who has no parent.
-
-A node has 2 names. The actual node name is generally contained in a
-property of type "name" in the node property list whose value is a
-zero terminated string and is mandatory for version 1 to 3 of the
-format definition (as it is in Open Firmware). Version 16 makes it
-optional as it can generate it from the unit name defined below.
-
-There is also a "unit name" that is used to differentiate nodes with
-the same name at the same level, it is usually made of the node
-names, the "@" sign, and a "unit address", which definition is
-specific to the bus type the node sits on.
-
-The unit name doesn't exist as a property per-se but is included in
-the device-tree structure. It is typically used to represent "path" in
-the device-tree. More details about the actual format of these will be
-below.
-
-The kernel powerpc generic code does not make any formal use of the
-unit address (though some board support code may do) so the only real
-requirement here for the unit address is to ensure uniqueness of
-the node unit name at a given level of the tree. Nodes with no notion
-of address and no possible sibling of the same name (like /memory or
-/cpus) may omit the unit address in the context of this specification,
-or use the "@0" default unit address. The unit name is used to define
-a node "full path", which is the concatenation of all parent node
-unit names separated with "/".
-
-The root node doesn't have a defined name, and isn't required to have
-a name property either if you are using version 3 or earlier of the
-format. It also has no unit address (no @ symbol followed by a unit
-address). The root node unit name is thus an empty string. The full
-path to the root node is "/".
-
-Every node which actually represents an actual device (that is, a node
-which isn't only a virtual "container" for more nodes, like "/cpus"
-is) is also required to have a "device_type" property indicating the
-type of node .
-
-Finally, every node that can be referenced from a property in another
-node is required to have a "linux,phandle" property. Real open
-firmware implementations provide a unique "phandle" value for every
-node that the "prom_init()" trampoline code turns into
-"linux,phandle" properties. However, this is made optional if the
-flattened device tree is used directly. An example of a node
-referencing another node via "phandle" is when laying out the
-interrupt tree which will be described in a further version of this
-document.
-
-This "linux, phandle" property is a 32-bit value that uniquely
-identifies a node. You are free to use whatever values or system of
-values, internal pointers, or whatever to generate these, the only
-requirement is that every node for which you provide that property has
-a unique value for it.
-
-Here is an example of a simple device-tree. In this example, an "o"
-designates a node followed by the node unit name. Properties are
-presented with their name followed by their content. "content"
-represents an ASCII string (zero terminated) value, while <content>
-represents a 32-bit hexadecimal value. The various nodes in this
-example will be discussed in a later chapter. At this point, it is
-only meant to give you a idea of what a device-tree looks like. I have
-purposefully kept the "name" and "linux,phandle" properties which
-aren't necessary in order to give you a better idea of what the tree
-looks like in practice.
-
-  / o device-tree
-      |- name = "device-tree"
-      |- model = "MyBoardName"
-      |- compatible = "MyBoardFamilyName"
-      |- #address-cells = <2>
-      |- #size-cells = <2>
-      |- linux,phandle = <0>
-      |
-      o cpus
-      | | - name = "cpus"
-      | | - linux,phandle = <1>
-      | | - #address-cells = <1>
-      | | - #size-cells = <0>
-      | |
-      | o PowerPC,970@0
-      |   |- name = "PowerPC,970"
-      |   |- device_type = "cpu"
-      |   |- reg = <0>
-      |   |- clock-frequency = <5f5e1000>
-      |   |- 64-bit
-      |   |- linux,phandle = <2>
-      |
-      o memory@0
-      | |- name = "memory"
-      | |- device_type = "memory"
-      | |- reg = <00000000 00000000 00000000 20000000>
-      | |- linux,phandle = <3>
-      |
-      o chosen
-        |- name = "chosen"
-        |- bootargs = "root=/dev/sda2"
-        |- linux,phandle = <4>
-
-This tree is almost a minimal tree. It pretty much contains the
-minimal set of required nodes and properties to boot a linux kernel;
-that is, some basic model informations at the root, the CPUs, and the
-physical memory layout.  It also includes misc information passed
-through /chosen, like in this example, the platform type (mandatory)
-and the kernel command line arguments (optional).
-
-The /cpus/PowerPC,970@0/64-bit property is an example of a
-property without a value. All other properties have a value. The
-significance of the #address-cells and #size-cells properties will be
-explained in chapter IV which defines precisely the required nodes and
-properties and their content.
-
-
-3) Device tree "structure" block
-
-The structure of the device tree is a linearized tree structure. The
-"OF_DT_BEGIN_NODE" token starts a new node, and the "OF_DT_END_NODE"
-ends that node definition. Child nodes are simply defined before
-"OF_DT_END_NODE" (that is nodes within the node). A 'token' is a 32
-bit value. The tree has to be "finished" with a OF_DT_END token
-
-Here's the basic structure of a single node:
-
-     * token OF_DT_BEGIN_NODE (that is 0x00000001)
-     * for version 1 to 3, this is the node full path as a zero
-       terminated string, starting with "/". For version 16 and later,
-       this is the node unit name only (or an empty string for the
-       root node)
-     * [align gap to next 4 bytes boundary]
-     * for each property:
-        * token OF_DT_PROP (that is 0x00000003)
-        * 32-bit value of property value size in bytes (or 0 if no
-          value)
-        * 32-bit value of offset in string block of property name
-        * property value data if any
-        * [align gap to next 4 bytes boundary]
-     * [child nodes if any]
-     * token OF_DT_END_NODE (that is 0x00000002)
-
-So the node content can be summarized as a start token, a full path,
-a list of properties, a list of child nodes, and an end token. Every
-child node is a full node structure itself as defined above.
-
-NOTE: The above definition requires that all property definitions for
-a particular node MUST precede any subnode definitions for that node.
-Although the structure would not be ambiguous if properties and
-subnodes were intermingled, the kernel parser requires that the
-properties come first (up until at least 2.6.22).  Any tools
-manipulating a flattened tree must take care to preserve this
-constraint.
-
-4) Device tree "strings" block
-
-In order to save space, property names, which are generally redundant,
-are stored separately in the "strings" block. This block is simply the
-whole bunch of zero terminated strings for all property names
-concatenated together. The device-tree property definitions in the
-structure block will contain offset values from the beginning of the
-strings block.
-
-
-III - libfdt
-============
-
-This library should be merged into dtc proper.
-This library should likely be worked into U-Boot and the kernel.
-
-
-IV - Utility Tools
-==================
-
-1) convert-dtsv0 -- Conversion to Version 1
-
-convert-dtsv0 is a small utility program which converts (DTS)
-Device Tree Source from the obsolete version 0 to version 1.
-
-Version 1 DTS files are marked by line "/dts-v1/;" at the top of the file.
-
-The syntax of the convert-dtsv0 command line is:
-
-    convert-dtsv0 [<input_filename ... >]
-
-Each file passed will be converted to the new /dts-v1/ version by creating
-a new file with a "v1" appended the filename.
-
-Comments, empty lines, etc. are preserved.
-
-
-2) fdtdump -- Flat Device Tree dumping utility
-
-The fdtdump program prints a readable version of a flat device tree file.
-
-The syntax of the fdtdump command line is:
-
-    fdtdump <DTB-file-name>
diff --git a/contrib/dtc/GPL b/contrib/dtc/GPL
deleted file mode 100644
index d60c31a97a54..000000000000
--- a/contrib/dtc/GPL
+++ /dev/null
@@ -1,340 +0,0 @@
-		    GNU GENERAL PUBLIC LICENSE
-		       Version 2, June 1991
-
- Copyright (C) 1989, 1991 Free Software Foundation, Inc.
-     59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
-
-			    Preamble
-
-  The licenses for most software are designed to take away your
-freedom to share and change it.  By contrast, the GNU General Public
-License is intended to guarantee your freedom to share and change free
-software--to make sure the software is free for all its users.  This
-General Public License applies to most of the Free Software
-Foundation's software and to any other program whose authors commit to
-using it.  (Some other Free Software Foundation software is covered by
-the GNU Library General Public License instead.)  You can apply it to
-your programs, too.
-
-  When we speak of free software, we are referring to freedom, not
-price.  Our General Public Licenses are designed to make sure that you
-have the freedom to distribute copies of free software (and charge for
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-in new free programs; and that you know you can do these things.
-
-  To protect your rights, we need to make restrictions that forbid
-anyone to deny you these rights or to ask you to surrender the rights.
-These restrictions translate to certain responsibilities for you if you
-distribute copies of the software, or if you modify it.
-
-  For example, if you distribute copies of such a program, whether
-gratis or for a fee, you must give the recipients all the rights that
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-source code.  And you must show them these terms so they know their
-rights.
-
-  We protect your rights with two steps: (1) copyright the software, and
-(2) offer you this license which gives you legal permission to copy,
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-
-  Also, for each author's protection and ours, we want to make certain
-that everyone understands that there is no warranty for this free
-software.  If the software is modified by someone else and passed on, we
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-  The precise terms and conditions for copying, distribution and
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-
-		    GNU GENERAL PUBLIC LICENSE
-   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
-
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-    a warranty) and that users may redistribute the program under
-    these conditions, and telling the user how to view a copy of this
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-    the Program is not required to print an announcement.)
-
-These requirements apply to the modified work as a whole.  If
-identifiable sections of that work are not derived from the Program,
-and can be reasonably considered independent and separate works in
-themselves, then this License, and its terms, do not apply to those
-sections when you distribute them as separate works.  But when you
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-on the Program, the distribution of the whole must be on the terms of
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-
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-with the Program (or with a work based on the Program) on a volume of
-a storage or distribution medium does not bring the other work under
-the scope of this License.
-
-  3. You may copy and distribute the Program (or a work based on it,
-under Section 2) in object code or executable form under the terms of
-Sections 1 and 2 above provided that you also do one of the following:
-
-    a) Accompany it with the complete corresponding machine-readable
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-    years, to give any third party, for a charge no more than your
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-compelled to copy the source along with the object code.
-
-  4. You may not copy, modify, sublicense, or distribute the Program
-except as expressly provided under this License.  Any attempt
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-modifying or distributing the Program (or any work based on the
-Program), you indicate your acceptance of this License to do so, and
-all its terms and conditions for copying, distributing or modifying
-the Program or works based on it.
-
-  6. Each time you redistribute the Program (or any work based on the
-Program), the recipient automatically receives a license from the
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-these terms and conditions.  You may not impose any further
-restrictions on the recipients' exercise of the rights granted herein.
-You are not responsible for enforcing compliance by third parties to
-this License.
-
-  7. If, as a consequence of a court judgment or allegation of patent
-infringement or for any other reason (not limited to patent issues),
-conditions are imposed on you (whether by court order, agreement or
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-distribute so as to satisfy simultaneously your obligations under this
-License and any other pertinent obligations, then as a consequence you
-may not distribute the Program at all.  For example, if a patent
-license would not permit royalty-free redistribution of the Program by
-all those who receive copies directly or indirectly through you, then
-the only way you could satisfy both it and this License would be to
-refrain entirely from distribution of the Program.
-
-If any portion of this section is held invalid or unenforceable under
-any particular circumstance, the balance of the section is intended to
-apply and the section as a whole is intended to apply in other
-circumstances.
-
-It is not the purpose of this section to induce you to infringe any
-patents or other property right claims or to contest validity of any
-such claims; this section has the sole purpose of protecting the
-integrity of the free software distribution system, which is
-implemented by public license practices.  Many people have made
-generous contributions to the wide range of software distributed
-through that system in reliance on consistent application of that
-system; it is up to the author/donor to decide if he or she is willing
-to distribute software through any other system and a licensee cannot
-impose that choice.
-
-This section is intended to make thoroughly clear what is believed to
-be a consequence of the rest of this License.
-
-  8. If the distribution and/or use of the Program is restricted in
-certain countries either by patents or by copyrighted interfaces, the
-original copyright holder who places the Program under this License
-may add an explicit geographical distribution limitation excluding
-those countries, so that distribution is permitted only in or among
-countries not thus excluded.  In such case, this License incorporates
-the limitation as if written in the body of this License.
-
-  9. The Free Software Foundation may publish revised and/or new versions
-of the General Public License from time to time.  Such new versions will
-be similar in spirit to the present version, but may differ in detail to
-address new problems or concerns.
-
-Each version is given a distinguishing version number.  If the Program
-specifies a version number of this License which applies to it and "any
-later version", you have the option of following the terms and conditions
-either of that version or of any later version published by the Free
-Software Foundation.  If the Program does not specify a version number of
-this License, you may choose any version ever published by the Free Software
-Foundation.
-
-  10. If you wish to incorporate parts of the Program into other free
-programs whose distribution conditions are different, write to the author
-to ask for permission.  For software which is copyrighted by the Free
-Software Foundation, write to the Free Software Foundation; we sometimes
-make exceptions for this.  Our decision will be guided by the two goals
-of preserving the free status of all derivatives of our free software and
-of promoting the sharing and reuse of software generally.
-
-			    NO WARRANTY
-
-  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
-FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
-OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
-PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
-OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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-TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
-PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
-REPAIR OR CORRECTION.
-
-  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
-REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
-OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
-TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
-YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
-PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGES.
-
-		     END OF TERMS AND CONDITIONS
-
-	    How to Apply These Terms to Your New Programs
-
-  If you develop a new program, and you want it to be of the greatest
-possible use to the public, the best way to achieve this is to make it
-free software which everyone can redistribute and change under these terms.
-
-  To do so, attach the following notices to the program.  It is safest
-to attach them to the start of each source file to most effectively
-convey the exclusion of warranty; and each file should have at least
-the "copyright" line and a pointer to where the full notice is found.
-
-    <one line to give the program's name and a brief idea of what it does.>
-    Copyright (C) <year>  <name of author>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-
-
-Also add information on how to contact you by electronic and paper mail.
-
-If the program is interactive, make it output a short notice like this
-when it starts in an interactive mode:
-
-    Gnomovision version 69, Copyright (C) year  name of author
-    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
-    This is free software, and you are welcome to redistribute it
-    under certain conditions; type `show c' for details.
-
-The hypothetical commands `show w' and `show c' should show the appropriate
-parts of the General Public License.  Of course, the commands you use may
-be called something other than `show w' and `show c'; they could even be
-mouse-clicks or menu items--whatever suits your program.
-
-You should also get your employer (if you work as a programmer) or your
-school, if any, to sign a "copyright disclaimer" for the program, if
-necessary.  Here is a sample; alter the names:
-
-  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
-  `Gnomovision' (which makes passes at compilers) written by James Hacker.
-
-  <signature of Ty Coon>, 1 April 1989
-  Ty Coon, President of Vice
-
-This General Public License does not permit incorporating your program into
-proprietary programs.  If your program is a subroutine library, you may
-consider it more useful to permit linking proprietary applications with the
-library.  If this is what you want to do, use the GNU Library General
-Public License instead of this License.
diff --git a/contrib/dtc/Makefile b/contrib/dtc/Makefile
deleted file mode 100644
index 5645ee836a21..000000000000
--- a/contrib/dtc/Makefile
+++ /dev/null
@@ -1,300 +0,0 @@
-#
-# Device Tree Compiler
-#
-
-#
-# Version information will be constructed in this order:
-# EXTRAVERSION might be "-rc", for example.
-# LOCAL_VERSION is likely from command line.
-# CONFIG_LOCALVERSION from some future config system.
-#
-VERSION = 1
-PATCHLEVEL = 4
-SUBLEVEL = 3
-EXTRAVERSION =
-LOCAL_VERSION =
-CONFIG_LOCALVERSION =
-
-CPPFLAGS = -I libfdt -I .
-WARNINGS = -Wall -Wpointer-arith -Wcast-qual -Wnested-externs \
-	-Wstrict-prototypes -Wmissing-prototypes -Wredundant-decls -Wshadow
-CFLAGS = -g -Os -fPIC -Werror $(WARNINGS)
-
-BISON = bison
-LEX = flex
-
-INSTALL = /usr/bin/install
-DESTDIR =
-PREFIX = $(HOME)
-BINDIR = $(PREFIX)/bin
-LIBDIR = $(PREFIX)/lib
-INCLUDEDIR = $(PREFIX)/include
-
-HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
-	    sed -e 's/\(cygwin\).*/cygwin/')
-
-ifeq ($(HOSTOS),darwin)
-SHAREDLIB_EXT=dylib
-SHAREDLIB_LINK_OPTIONS=-dynamiclib -Wl,-install_name -Wl,
-else
-SHAREDLIB_EXT=so
-SHAREDLIB_LINK_OPTIONS=-shared -Wl,--version-script=$(LIBFDT_version) -Wl,-soname,
-endif
-
-#
-# Overall rules
-#
-ifdef V
-VECHO = :
-else
-VECHO = echo "	"
-ARFLAGS ?= rc
-.SILENT:
-endif
-
-NODEPTARGETS = clean
-ifeq ($(MAKECMDGOALS),)
-DEPTARGETS = all
-else
-DEPTARGETS = $(filter-out $(NODEPTARGETS),$(MAKECMDGOALS))
-endif
-
-#
-# Rules for versioning
-#
-
-DTC_VERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
-VERSION_FILE = version_gen.h
-
-CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
-	  else if [ -x /bin/bash ]; then echo /bin/bash; \
-	  else echo sh; fi ; fi)
-
-nullstring :=
-space	:= $(nullstring) # end of line
-
-localver_config = $(subst $(space),, $(string) \
-			      $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
-
-localver_cmd = $(subst $(space),, $(string) \
-			      $(patsubst "%",%,$(LOCALVERSION)))
-
-localver_scm = $(shell $(CONFIG_SHELL) ./scripts/setlocalversion)
-localver_full  = $(localver_config)$(localver_cmd)$(localver_scm)
-
-dtc_version = $(DTC_VERSION)$(localver_full)
-
-# Contents of the generated version file.
-define filechk_version
-	(echo "#define DTC_VERSION \"DTC $(dtc_version)\""; )
-endef
-
-define filechk
-	set -e;					\
-	echo '	CHK $@';			\
-	mkdir -p $(dir $@);			\
-	$(filechk_$(1)) < $< > $@.tmp;		\
-	if [ -r $@ ] && cmp -s $@ $@.tmp; then	\
-		rm -f $@.tmp;			\
-	else					\
-		echo '	UPD $@';		\
-		mv -f $@.tmp $@;		\
-	fi;
-endef
-
-
-include Makefile.convert-dtsv0
-include Makefile.dtc
-include Makefile.utils
-
-BIN += convert-dtsv0
-BIN += dtc
-BIN += fdtdump
-BIN += fdtget
-BIN += fdtput
-
-SCRIPTS = dtdiff
-
-all: $(BIN) libfdt
-
-
-ifneq ($(DEPTARGETS),)
--include $(DTC_OBJS:%.o=%.d)
--include $(CONVERT_OBJS:%.o=%.d)
--include $(FDTDUMP_OBJS:%.o=%.d)
--include $(FDTGET_OBJS:%.o=%.d)
--include $(FDTPUT_OBJS:%.o=%.d)
-endif
-
-
-
-#
-# Rules for libfdt
-#
-LIBFDT_objdir = libfdt
-LIBFDT_srcdir = libfdt
-LIBFDT_archive = $(LIBFDT_objdir)/libfdt.a
-LIBFDT_lib = $(LIBFDT_objdir)/libfdt-$(DTC_VERSION).$(SHAREDLIB_EXT)
-LIBFDT_include = $(addprefix $(LIBFDT_srcdir)/,$(LIBFDT_INCLUDES))
-LIBFDT_version = $(addprefix $(LIBFDT_srcdir)/,$(LIBFDT_VERSION))
-
-include $(LIBFDT_srcdir)/Makefile.libfdt
-
-.PHONY: libfdt
-libfdt: $(LIBFDT_archive) $(LIBFDT_lib)
-
-$(LIBFDT_archive): $(addprefix $(LIBFDT_objdir)/,$(LIBFDT_OBJS))
-$(LIBFDT_lib): $(addprefix $(LIBFDT_objdir)/,$(LIBFDT_OBJS))
-
-libfdt_clean:
-	@$(VECHO) CLEAN "(libfdt)"
-	rm -f $(addprefix $(LIBFDT_objdir)/,$(STD_CLEANFILES))
-	rm -f $(LIBFDT_objdir)/*.so
-
-ifneq ($(DEPTARGETS),)
--include $(LIBFDT_OBJS:%.o=$(LIBFDT_objdir)/%.d)
-endif
-
-# This stops make from generating the lex and bison output during
-# auto-dependency computation, but throwing them away as an
-# intermediate target and building them again "for real"
-.SECONDARY: $(DTC_GEN_SRCS) $(CONVERT_GEN_SRCS)
-
-install-bin: all $(SCRIPTS)
-	@$(VECHO) INSTALL-BIN
-	$(INSTALL) -d $(DESTDIR)$(BINDIR)
-	$(INSTALL) $(BIN) $(SCRIPTS) $(DESTDIR)$(BINDIR)
-
-install-lib: all
-	@$(VECHO) INSTALL-LIB
-	$(INSTALL) -d $(DESTDIR)$(LIBDIR)
-	$(INSTALL) $(LIBFDT_lib) $(DESTDIR)$(LIBDIR)
-	ln -sf $(notdir $(LIBFDT_lib)) $(DESTDIR)$(LIBDIR)/$(LIBFDT_soname)
-	ln -sf $(LIBFDT_soname) $(DESTDIR)$(LIBDIR)/libfdt.$(SHAREDLIB_EXT)
-	$(INSTALL) -m 644 $(LIBFDT_archive) $(DESTDIR)$(LIBDIR)
-
-install-includes:
-	@$(VECHO) INSTALL-INC
-	$(INSTALL) -d $(DESTDIR)$(INCLUDEDIR)
-	$(INSTALL) -m 644 $(LIBFDT_include) $(DESTDIR)$(INCLUDEDIR)
-
-install: install-bin install-lib install-includes
-
-$(VERSION_FILE): Makefile FORCE
-	$(call filechk,version)
-
-
-dtc: $(DTC_OBJS)
-
-convert-dtsv0: $(CONVERT_OBJS)
-	@$(VECHO) LD $@
-	$(LINK.c) -o $@ $^
-
-fdtdump:	$(FDTDUMP_OBJS)
-
-fdtget:	$(FDTGET_OBJS) $(LIBFDT_archive)
-
-fdtput:	$(FDTPUT_OBJS) $(LIBFDT_archive)
-
-dist:
-	git archive --format=tar --prefix=dtc-$(dtc_version)/ HEAD \
-		> ../dtc-$(dtc_version).tar
-	cat ../dtc-$(dtc_version).tar | \
-		gzip -9 > ../dtc-$(dtc_version).tar.gz
-
-#
-# Release signing and uploading
-# This is for maintainer convenience, don't try this at home.
-#
-ifeq ($(MAINTAINER),y)
-GPG = gpg2
-KUP = kup
-KUPDIR = /pub/software/utils/dtc
-
-kup: dist
-	$(GPG) --detach-sign --armor -o ../dtc-$(dtc_version).tar.sign \
-		../dtc-$(dtc_version).tar
-	$(KUP) put ../dtc-$(dtc_version).tar.gz ../dtc-$(dtc_version).tar.sign \
-		$(KUPDIR)/dtc-$(dtc_version).tar.gz
-endif
-
-tags: FORCE
-	rm -f tags
-	find . \( -name tests -type d -prune \) -o \
-	       \( ! -name '*.tab.[ch]' ! -name '*.lex.c' \
-	       -name '*.[chly]' -type f -print \) | xargs ctags -a
-
-#
-# Testsuite rules
-#
-TESTS_PREFIX=tests/
-
-TESTS_BIN += dtc
-TESTS_BIN += convert-dtsv0
-TESTS_BIN += fdtput
-TESTS_BIN += fdtget
-TESTS_BIN += fdtdump
-
-include tests/Makefile.tests
-
-#
-# Clean rules
-#
-STD_CLEANFILES = *~ *.o *.$(SHAREDLIB_EXT) *.d *.a *.i *.s core a.out vgcore.* \
-	*.tab.[ch] *.lex.c *.output
-
-clean: libfdt_clean tests_clean
-	@$(VECHO) CLEAN
-	rm -f $(STD_CLEANFILES)
-	rm -f $(VERSION_FILE)
-	rm -f $(BIN)
-	rm -f dtc-*.tar dtc-*.tar.sign dtc-*.tar.asc
-
-#
-# Generic compile rules
-#
-%: %.o
-	@$(VECHO) LD $@
-	$(LINK.c) -o $@ $^
-
-%.o: %.c
-	@$(VECHO) CC $@
-	$(CC) $(CPPFLAGS) $(CFLAGS) -o $@ -c $<
-
-%.o: %.S
-	@$(VECHO) AS $@
-	$(CC) $(CPPFLAGS) $(AFLAGS) -D__ASSEMBLY__ -o $@ -c $<
-
-%.d: %.c
-	@$(VECHO) DEP $<
-	$(CC) $(CPPFLAGS) -MM -MG -MT "$*.o $@" $< > $@
-
-%.d: %.S
-	@$(VECHO) DEP $<
-	$(CC) $(CPPFLAGS) -MM -MG -MT "$*.o $@" $< > $@
-
-%.i:	%.c
-	@$(VECHO) CPP $@
-	$(CC) $(CPPFLAGS) -E $< > $@
-
-%.s:	%.c
-	@$(VECHO) CC -S $@
-	$(CC) $(CPPFLAGS) $(CFLAGS) -o $@ -S $<
-
-%.a:
-	@$(VECHO) AR $@
-	$(AR) $(ARFLAGS) $@ $^
-
-$(LIBFDT_lib):
-	@$(VECHO) LD $@
-	$(CC) $(LDFLAGS) -fPIC $(SHAREDLIB_LINK_OPTIONS)$(LIBFDT_soname) -o $(LIBFDT_lib) $^
-
-%.lex.c: %.l
-	@$(VECHO) LEX $@
-	$(LEX) -o$@ $<
-
-%.tab.c %.tab.h %.output: %.y
-	@$(VECHO) BISON $@
-	$(BISON) -d $<
-
-FORCE:
diff --git a/contrib/dtc/README b/contrib/dtc/README
deleted file mode 100644
index f92008f645f6..000000000000
--- a/contrib/dtc/README
+++ /dev/null
@@ -1,16 +0,0 @@
-The source tree contains the Device Tree Compiler (dtc) toolchain for
-working with device tree source and binary files and also libfdt, a
-utility library for reading and manipulating the binary format.
-
-DTC and LIBFDT are maintained by:
-
-David Gibson <david@gibson.dropbear.id.au>
-Jon Loeliger <jdl@jdl.com>
-
-Mailing list
-------------
-The following list is for discussion about dtc and libfdt implementation
-mailto:devicetree-compiler@vger.kernel.org
-
-Core device tree bindings are discussed on the devicetree-spec list:
-mailto:devicetree-spec@vger.kernel.org
diff --git a/contrib/dtc/README.license b/contrib/dtc/README.license
deleted file mode 100644
index d56c88f528a3..000000000000
--- a/contrib/dtc/README.license
+++ /dev/null
@@ -1,56 +0,0 @@
-Licensing and contribution policy of dtc and libfdt
-===================================================
-
-This dtc package contains two pieces of software: dtc itself, and
-libfdt which comprises the files in the libfdt/ subdirectory.  These
-two pieces of software, although closely related, are quite distinct.
-dtc does not incoporate or rely on libfdt for its operation, nor vice
-versa.  It is important that these two pieces of software have
-different license conditions.
-
-As the copyright banners in each source file attest, dtc is licensed
-under the GNU GPL.  The full text of the GPL can be found in the file
-entitled 'GPL' which should be included in this package.  dtc code,
-therefore, may not be incorporated into works which do not have a GPL
-compatible license.
-
-libfdt, however, is GPL/BSD dual-licensed.  That is, it may be used
-either under the terms of the GPL, or under the terms of the 2-clause
-BSD license (aka the ISC license).  The full terms of that license are
-given in the copyright banners of each of the libfdt source files.
-This is, in practice, equivalent to being BSD licensed, since the
-terms of the BSD license are strictly more permissive than the GPL.
-
-I made the decision to license libfdt in this way because I want to
-encourage widespread and correct usage of flattened device trees,
-including by proprietary or otherwise GPL-incompatible firmware or
-tools.  Allowing libfdt to be used under the terms of the BSD license
-makes that it easier for vendors or authors of such software to do so.
-
-This does mean that libfdt code could be "stolen" - say, included in a
-proprietary fimware and extended without contributing those extensions
-back to the libfdt mainline.  While I hope that doesn't happen, I
-believe the goal of allowing libfdt to be widely used is more
-important than avoiding that.  libfdt is quite small, and hardly
-rocket science; so the incentive for such impolite behaviour is small,
-and the inconvenience caused therby is not dire.
-
-Licenses such as the LGPL which would allow code to be used in non-GPL
-software, but also require contributions to be returned were
-considered.  However, libfdt is designed to be used in firmwares and
-other environments with unusual technical constraints.  It's difficult
-to anticipate all possible changes which might be needed to meld
-libfdt into such environments and so difficult to suitably word a
-license that puts the boundary between what is and isn't permitted in
-the intended place.  Again, I judged encouraging widespread use of
-libfdt by keeping the license terms simple and familiar to be the more
-important goal.
-
-**IMPORTANT** It's intended that all of libfdt as released remain
-permissively licensed this way.  Therefore only contributions which
-are released under these terms can be merged into the libfdt mainline.
-
-
-David Gibson <david@gibson.dropbear.id.au>
-(principal original author of dtc and libfdt)
-2 November 2007
diff --git a/contrib/dtc/TODO b/contrib/dtc/TODO
deleted file mode 100644
index a3e71828c834..000000000000
--- a/contrib/dtc/TODO
+++ /dev/null
@@ -1,8 +0,0 @@
-- Bugfixes:
-	* Proper handling of boot cpu information
-- Generate mem reserve map
-	* linux,reserve-map property
-	* generating reserve entry for device tree itself
-	* generating reserve entries from tce, rtas etc. properties
-- Expression support
-- Macro system
diff --git a/contrib/dtc/checks.c b/contrib/dtc/checks.c
deleted file mode 100644
index 0e8b978c360c..000000000000
--- a/contrib/dtc/checks.c
+++ /dev/null
@@ -1,849 +0,0 @@
-/*
- * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2007.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
- *                                                                   USA
- */
-
-#include "dtc.h"
-
-#ifdef TRACE_CHECKS
-#define TRACE(c, ...) \
-	do { \
-		fprintf(stderr, "=== %s: ", (c)->name); \
-		fprintf(stderr, __VA_ARGS__); \
-		fprintf(stderr, "\n"); \
-	} while (0)
-#else
-#define TRACE(c, fmt, ...)	do { } while (0)
-#endif
-
-enum checkstatus {
-	UNCHECKED = 0,
-	PREREQ,
-	PASSED,
-	FAILED,
-};
-
-struct check;
-
-typedef void (*check_fn)(struct check *c, struct dt_info *dti, struct node *node);
-
-struct check {
-	const char *name;
-	check_fn fn;
-	void *data;
-	bool warn, error;
-	enum checkstatus status;
-	bool inprogress;
-	int num_prereqs;
-	struct check **prereq;
-};
-
-#define CHECK_ENTRY(_nm, _fn, _d, _w, _e, ...)	       \
-	static struct check *_nm##_prereqs[] = { __VA_ARGS__ }; \
-	static struct check _nm = { \
-		.name = #_nm, \
-		.fn = (_fn), \
-		.data = (_d), \
-		.warn = (_w), \
-		.error = (_e), \
-		.status = UNCHECKED, \
-		.num_prereqs = ARRAY_SIZE(_nm##_prereqs), \
-		.prereq = _nm##_prereqs, \
-	};
-#define WARNING(_nm, _fn, _d, ...) \
-	CHECK_ENTRY(_nm, _fn, _d, true, false, __VA_ARGS__)
-#define ERROR(_nm, _fn, _d, ...) \
-	CHECK_ENTRY(_nm, _fn, _d, false, true, __VA_ARGS__)
-#define CHECK(_nm, _fn, _d, ...) \
-	CHECK_ENTRY(_nm, _fn, _d, false, false, __VA_ARGS__)
-
-#ifdef __GNUC__
-static inline void check_msg(struct check *c, struct dt_info *dti,
-			     const char *fmt, ...) __attribute__((format (printf, 3, 4)));
-#endif
-static inline void check_msg(struct check *c, struct dt_info *dti,
-			     const char *fmt, ...)
-{
-	va_list ap;
-	va_start(ap, fmt);
-
-	if ((c->warn && (quiet < 1))
-	    || (c->error && (quiet < 2))) {
-		fprintf(stderr, "%s: %s (%s): ",
-			strcmp(dti->outname, "-") ? dti->outname : "<stdout>",
-			(c->error) ? "ERROR" : "Warning", c->name);
-		vfprintf(stderr, fmt, ap);
-		fprintf(stderr, "\n");
-	}
-	va_end(ap);
-}
-
-#define FAIL(c, dti, ...)						\
-	do {								\
-		TRACE((c), "\t\tFAILED at %s:%d", __FILE__, __LINE__);	\
-		(c)->status = FAILED;					\
-		check_msg((c), dti, __VA_ARGS__);			\
-	} while (0)
-
-static void check_nodes_props(struct check *c, struct dt_info *dti, struct node *node)
-{
-	struct node *child;
-
-	TRACE(c, "%s", node->fullpath);
-	if (c->fn)
-		c->fn(c, dti, node);
-
-	for_each_child(node, child)
-		check_nodes_props(c, dti, child);
-}
-
-static bool run_check(struct check *c, struct dt_info *dti)
-{
-	struct node *dt = dti->dt;
-	bool error = false;
-	int i;
-
-	assert(!c->inprogress);
-
-	if (c->status != UNCHECKED)
-		goto out;
-
-	c->inprogress = true;
-
-	for (i = 0; i < c->num_prereqs; i++) {
-		struct check *prq = c->prereq[i];
-		error = error || run_check(prq, dti);
-		if (prq->status != PASSED) {
-			c->status = PREREQ;
-			check_msg(c, dti, "Failed prerequisite '%s'",
-				  c->prereq[i]->name);
-		}
-	}
-
-	if (c->status != UNCHECKED)
-		goto out;
-
-	check_nodes_props(c, dti, dt);
-
-	if (c->status == UNCHECKED)
-		c->status = PASSED;
-
-	TRACE(c, "\tCompleted, status %d", c->status);
-
-out:
-	c->inprogress = false;
-	if ((c->status != PASSED) && (c->error))
-		error = true;
-	return error;
-}
-
-/*
- * Utility check functions
- */
-
-/* A check which always fails, for testing purposes only */
-static inline void check_always_fail(struct check *c, struct dt_info *dti,
-				     struct node *node)
-{
-	FAIL(c, dti, "always_fail check");
-}
-CHECK(always_fail, check_always_fail, NULL);
-
-static void check_is_string(struct check *c, struct dt_info *dti,
-			    struct node *node)
-{
-	struct property *prop;
-	char *propname = c->data;
-
-	prop = get_property(node, propname);
-	if (!prop)
-		return; /* Not present, assumed ok */
-
-	if (!data_is_one_string(prop->val))
-		FAIL(c, dti, "\"%s\" property in %s is not a string",
-		     propname, node->fullpath);
-}
-#define WARNING_IF_NOT_STRING(nm, propname) \
-	WARNING(nm, check_is_string, (propname))
-#define ERROR_IF_NOT_STRING(nm, propname) \
-	ERROR(nm, check_is_string, (propname))
-
-static void check_is_cell(struct check *c, struct dt_info *dti,
-			  struct node *node)
-{
-	struct property *prop;
-	char *propname = c->data;
-
-	prop = get_property(node, propname);
-	if (!prop)
-		return; /* Not present, assumed ok */
-
-	if (prop->val.len != sizeof(cell_t))
-		FAIL(c, dti, "\"%s\" property in %s is not a single cell",
-		     propname, node->fullpath);
-}
-#define WARNING_IF_NOT_CELL(nm, propname) \
-	WARNING(nm, check_is_cell, (propname))
-#define ERROR_IF_NOT_CELL(nm, propname) \
-	ERROR(nm, check_is_cell, (propname))
-
-/*
- * Structural check functions
- */
-
-static void check_duplicate_node_names(struct check *c, struct dt_info *dti,
-				       struct node *node)
-{
-	struct node *child, *child2;
-
-	for_each_child(node, child)
-		for (child2 = child->next_sibling;
-		     child2;
-		     child2 = child2->next_sibling)
-			if (streq(child->name, child2->name))
-				FAIL(c, dti, "Duplicate node name %s",
-				     child->fullpath);
-}
-ERROR(duplicate_node_names, check_duplicate_node_names, NULL);
-
-static void check_duplicate_property_names(struct check *c, struct dt_info *dti,
-					   struct node *node)
-{
-	struct property *prop, *prop2;
-
-	for_each_property(node, prop) {
-		for (prop2 = prop->next; prop2; prop2 = prop2->next) {
-			if (prop2->deleted)
-				continue;
-			if (streq(prop->name, prop2->name))
-				FAIL(c, dti, "Duplicate property name %s in %s",
-				     prop->name, node->fullpath);
-		}
-	}
-}
-ERROR(duplicate_property_names, check_duplicate_property_names, NULL);
-
-#define LOWERCASE	"abcdefghijklmnopqrstuvwxyz"
-#define UPPERCASE	"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
-#define DIGITS		"0123456789"
-#define PROPNODECHARS	LOWERCASE UPPERCASE DIGITS ",._+*#?-"
-#define PROPNODECHARSSTRICT	LOWERCASE UPPERCASE DIGITS ",-"
-
-static void check_node_name_chars(struct check *c, struct dt_info *dti,
-				  struct node *node)
-{
-	int n = strspn(node->name, c->data);
-
-	if (n < strlen(node->name))
-		FAIL(c, dti, "Bad character '%c' in node %s",
-		     node->name[n], node->fullpath);
-}
-ERROR(node_name_chars, check_node_name_chars, PROPNODECHARS "@");
-
-static void check_node_name_chars_strict(struct check *c, struct dt_info *dti,
-					 struct node *node)
-{
-	int n = strspn(node->name, c->data);
-
-	if (n < node->basenamelen)
-		FAIL(c, dti, "Character '%c' not recommended in node %s",
-		     node->name[n], node->fullpath);
-}
-CHECK(node_name_chars_strict, check_node_name_chars_strict, PROPNODECHARSSTRICT);
-
-static void check_node_name_format(struct check *c, struct dt_info *dti,
-				   struct node *node)
-{
-	if (strchr(get_unitname(node), '@'))
-		FAIL(c, dti, "Node %s has multiple '@' characters in name",
-		     node->fullpath);
-}
-ERROR(node_name_format, check_node_name_format, NULL, &node_name_chars);
-
-static void check_unit_address_vs_reg(struct check *c, struct dt_info *dti,
-				      struct node *node)
-{
-	const char *unitname = get_unitname(node);
-	struct property *prop = get_property(node, "reg");
-
-	if (!prop) {
-		prop = get_property(node, "ranges");
-		if (prop && !prop->val.len)
-			prop = NULL;
-	}
-
-	if (prop) {
-		if (!unitname[0])
-			FAIL(c, dti, "Node %s has a reg or ranges property, but no unit name",
-			    node->fullpath);
-	} else {
-		if (unitname[0])
-			FAIL(c, dti, "Node %s has a unit name, but no reg property",
-			    node->fullpath);
-	}
-}
-WARNING(unit_address_vs_reg, check_unit_address_vs_reg, NULL);
-
-static void check_property_name_chars(struct check *c, struct dt_info *dti,
-				      struct node *node)
-{
-	struct property *prop;
-
-	for_each_property(node, prop) {
-		int n = strspn(prop->name, c->data);
-
-		if (n < strlen(prop->name))
-			FAIL(c, dti, "Bad character '%c' in property name \"%s\", node %s",
-			     prop->name[n], prop->name, node->fullpath);
-	}
-}
-ERROR(property_name_chars, check_property_name_chars, PROPNODECHARS);
-
-static void check_property_name_chars_strict(struct check *c,
-					     struct dt_info *dti,
-					     struct node *node)
-{
-	struct property *prop;
-
-	for_each_property(node, prop) {
-		const char *name = prop->name;
-		int n = strspn(name, c->data);
-
-		if (n == strlen(prop->name))
-			continue;
-
-		/* Certain names are whitelisted */
-		if (streq(name, "device_type"))
-			continue;
-
-		/*
-		 * # is only allowed at the beginning of property names not counting
-		 * the vendor prefix.
-		 */
-		if (name[n] == '#' && ((n == 0) || (name[n-1] == ','))) {
-			name += n + 1;
-			n = strspn(name, c->data);
-		}
-		if (n < strlen(name))
-			FAIL(c, dti, "Character '%c' not recommended in property name \"%s\", node %s",
-			     name[n], prop->name, node->fullpath);
-	}
-}
-CHECK(property_name_chars_strict, check_property_name_chars_strict, PROPNODECHARSSTRICT);
-
-#define DESCLABEL_FMT	"%s%s%s%s%s"
-#define DESCLABEL_ARGS(node,prop,mark)		\
-	((mark) ? "value of " : ""),		\
-	((prop) ? "'" : ""), \
-	((prop) ? (prop)->name : ""), \
-	((prop) ? "' in " : ""), (node)->fullpath
-
-static void check_duplicate_label(struct check *c, struct dt_info *dti,
-				  const char *label, struct node *node,
-				  struct property *prop, struct marker *mark)
-{
-	struct node *dt = dti->dt;
-	struct node *othernode = NULL;
-	struct property *otherprop = NULL;
-	struct marker *othermark = NULL;
-
-	othernode = get_node_by_label(dt, label);
-
-	if (!othernode)
-		otherprop = get_property_by_label(dt, label, &othernode);
-	if (!othernode)
-		othermark = get_marker_label(dt, label, &othernode,
-					       &otherprop);
-
-	if (!othernode)
-		return;
-
-	if ((othernode != node) || (otherprop != prop) || (othermark != mark))
-		FAIL(c, dti, "Duplicate label '%s' on " DESCLABEL_FMT
-		     " and " DESCLABEL_FMT,
-		     label, DESCLABEL_ARGS(node, prop, mark),
-		     DESCLABEL_ARGS(othernode, otherprop, othermark));
-}
-
-static void check_duplicate_label_node(struct check *c, struct dt_info *dti,
-				       struct node *node)
-{
-	struct label *l;
-	struct property *prop;
-
-	for_each_label(node->labels, l)
-		check_duplicate_label(c, dti, l->label, node, NULL, NULL);
-
-	for_each_property(node, prop) {
-		struct marker *m = prop->val.markers;
-
-		for_each_label(prop->labels, l)
-			check_duplicate_label(c, dti, l->label, node, prop, NULL);
-
-		for_each_marker_of_type(m, LABEL)
-			check_duplicate_label(c, dti, m->ref, node, prop, m);
-	}
-}
-ERROR(duplicate_label, check_duplicate_label_node, NULL);
-
-static cell_t check_phandle_prop(struct check *c, struct dt_info *dti,
-				 struct node *node, const char *propname)
-{
-	struct node *root = dti->dt;
-	struct property *prop;
-	struct marker *m;
-	cell_t phandle;
-
-	prop = get_property(node, propname);
-	if (!prop)
-		return 0;
-
-	if (prop->val.len != sizeof(cell_t)) {
-		FAIL(c, dti, "%s has bad length (%d) %s property",
-		     node->fullpath, prop->val.len, prop->name);
-		return 0;
-	}
-
-	m = prop->val.markers;
-	for_each_marker_of_type(m, REF_PHANDLE) {
-		assert(m->offset == 0);
-		if (node != get_node_by_ref(root, m->ref))
-			/* "Set this node's phandle equal to some
-			 * other node's phandle".  That's nonsensical
-			 * by construction. */ {
-			FAIL(c, dti, "%s in %s is a reference to another node",
-			     prop->name, node->fullpath);
-		}
-		/* But setting this node's phandle equal to its own
-		 * phandle is allowed - that means allocate a unique
-		 * phandle for this node, even if it's not otherwise
-		 * referenced.  The value will be filled in later, so
-		 * we treat it as having no phandle data for now. */
-		return 0;
-	}
-
-	phandle = propval_cell(prop);
-
-	if ((phandle == 0) || (phandle == -1)) {
-		FAIL(c, dti, "%s has bad value (0x%x) in %s property",
-		     node->fullpath, phandle, prop->name);
-		return 0;
-	}
-
-	return phandle;
-}
-
-static void check_explicit_phandles(struct check *c, struct dt_info *dti,
-				    struct node *node)
-{
-	struct node *root = dti->dt;
-	struct node *other;
-	cell_t phandle, linux_phandle;
-
-	/* Nothing should have assigned phandles yet */
-	assert(!node->phandle);
-
-	phandle = check_phandle_prop(c, dti, node, "phandle");
-
-	linux_phandle = check_phandle_prop(c, dti, node, "linux,phandle");
-
-	if (!phandle && !linux_phandle)
-		/* No valid phandles; nothing further to check */
-		return;
-
-	if (linux_phandle && phandle && (phandle != linux_phandle))
-		FAIL(c, dti, "%s has mismatching 'phandle' and 'linux,phandle'"
-		     " properties", node->fullpath);
-
-	if (linux_phandle && !phandle)
-		phandle = linux_phandle;
-
-	other = get_node_by_phandle(root, phandle);
-	if (other && (other != node)) {
-		FAIL(c, dti, "%s has duplicated phandle 0x%x (seen before at %s)",
-		     node->fullpath, phandle, other->fullpath);
-		return;
-	}
-
-	node->phandle = phandle;
-}
-ERROR(explicit_phandles, check_explicit_phandles, NULL);
-
-static void check_name_properties(struct check *c, struct dt_info *dti,
-				  struct node *node)
-{
-	struct property **pp, *prop = NULL;
-
-	for (pp = &node->proplist; *pp; pp = &((*pp)->next))
-		if (streq((*pp)->name, "name")) {
-			prop = *pp;
-			break;
-		}
-
-	if (!prop)
-		return; /* No name property, that's fine */
-
-	if ((prop->val.len != node->basenamelen+1)
-	    || (memcmp(prop->val.val, node->name, node->basenamelen) != 0)) {
-		FAIL(c, dti, "\"name\" property in %s is incorrect (\"%s\" instead"
-		     " of base node name)", node->fullpath, prop->val.val);
-	} else {
-		/* The name property is correct, and therefore redundant.
-		 * Delete it */
-		*pp = prop->next;
-		free(prop->name);
-		data_free(prop->val);
-		free(prop);
-	}
-}
-ERROR_IF_NOT_STRING(name_is_string, "name");
-ERROR(name_properties, check_name_properties, NULL, &name_is_string);
-
-/*
- * Reference fixup functions
- */
-
-static void fixup_phandle_references(struct check *c, struct dt_info *dti,
-				     struct node *node)
-{
-	struct node *dt = dti->dt;
-	struct property *prop;
-
-	for_each_property(node, prop) {
-		struct marker *m = prop->val.markers;
-		struct node *refnode;
-		cell_t phandle;
-
-		for_each_marker_of_type(m, REF_PHANDLE) {
-			assert(m->offset + sizeof(cell_t) <= prop->val.len);
-
-			refnode = get_node_by_ref(dt, m->ref);
-			if (! refnode) {
-				if (!(dti->dtsflags & DTSF_PLUGIN))
-					FAIL(c, dti, "Reference to non-existent node or "
-							"label \"%s\"\n", m->ref);
-				else /* mark the entry as unresolved */
-					*((cell_t *)(prop->val.val + m->offset)) =
-						cpu_to_fdt32(0xffffffff);
-				continue;
-			}
-
-			phandle = get_node_phandle(dt, refnode);
-			*((cell_t *)(prop->val.val + m->offset)) = cpu_to_fdt32(phandle);
-		}
-	}
-}
-ERROR(phandle_references, fixup_phandle_references, NULL,
-      &duplicate_node_names, &explicit_phandles);
-
-static void fixup_path_references(struct check *c, struct dt_info *dti,
-				  struct node *node)
-{
-	struct node *dt = dti->dt;
-	struct property *prop;
-
-	for_each_property(node, prop) {
-		struct marker *m = prop->val.markers;
-		struct node *refnode;
-		char *path;
-
-		for_each_marker_of_type(m, REF_PATH) {
-			assert(m->offset <= prop->val.len);
-
-			refnode = get_node_by_ref(dt, m->ref);
-			if (!refnode) {
-				FAIL(c, dti, "Reference to non-existent node or label \"%s\"\n",
-				     m->ref);
-				continue;
-			}
-
-			path = refnode->fullpath;
-			prop->val = data_insert_at_marker(prop->val, m, path,
-							  strlen(path) + 1);
-		}
-	}
-}
-ERROR(path_references, fixup_path_references, NULL, &duplicate_node_names);
-
-/*
- * Semantic checks
- */
-WARNING_IF_NOT_CELL(address_cells_is_cell, "#address-cells");
-WARNING_IF_NOT_CELL(size_cells_is_cell, "#size-cells");
-WARNING_IF_NOT_CELL(interrupt_cells_is_cell, "#interrupt-cells");
-
-WARNING_IF_NOT_STRING(device_type_is_string, "device_type");
-WARNING_IF_NOT_STRING(model_is_string, "model");
-WARNING_IF_NOT_STRING(status_is_string, "status");
-
-static void fixup_addr_size_cells(struct check *c, struct dt_info *dti,
-				  struct node *node)
-{
-	struct property *prop;
-
-	node->addr_cells = -1;
-	node->size_cells = -1;
-
-	prop = get_property(node, "#address-cells");
-	if (prop)
-		node->addr_cells = propval_cell(prop);
-
-	prop = get_property(node, "#size-cells");
-	if (prop)
-		node->size_cells = propval_cell(prop);
-}
-WARNING(addr_size_cells, fixup_addr_size_cells, NULL,
-	&address_cells_is_cell, &size_cells_is_cell);
-
-#define node_addr_cells(n) \
-	(((n)->addr_cells == -1) ? 2 : (n)->addr_cells)
-#define node_size_cells(n) \
-	(((n)->size_cells == -1) ? 1 : (n)->size_cells)
-
-static void check_reg_format(struct check *c, struct dt_info *dti,
-			     struct node *node)
-{
-	struct property *prop;
-	int addr_cells, size_cells, entrylen;
-
-	prop = get_property(node, "reg");
-	if (!prop)
-		return; /* No "reg", that's fine */
-
-	if (!node->parent) {
-		FAIL(c, dti, "Root node has a \"reg\" property");
-		return;
-	}
-
-	if (prop->val.len == 0)
-		FAIL(c, dti, "\"reg\" property in %s is empty", node->fullpath);
-
-	addr_cells = node_addr_cells(node->parent);
-	size_cells = node_size_cells(node->parent);
-	entrylen = (addr_cells + size_cells) * sizeof(cell_t);
-
-	if (!entrylen || (prop->val.len % entrylen) != 0)
-		FAIL(c, dti, "\"reg\" property in %s has invalid length (%d bytes) "
-		     "(#address-cells == %d, #size-cells == %d)",
-		     node->fullpath, prop->val.len, addr_cells, size_cells);
-}
-WARNING(reg_format, check_reg_format, NULL, &addr_size_cells);
-
-static void check_ranges_format(struct check *c, struct dt_info *dti,
-				struct node *node)
-{
-	struct property *prop;
-	int c_addr_cells, p_addr_cells, c_size_cells, p_size_cells, entrylen;
-
-	prop = get_property(node, "ranges");
-	if (!prop)
-		return;
-
-	if (!node->parent) {
-		FAIL(c, dti, "Root node has a \"ranges\" property");
-		return;
-	}
-
-	p_addr_cells = node_addr_cells(node->parent);
-	p_size_cells = node_size_cells(node->parent);
-	c_addr_cells = node_addr_cells(node);
-	c_size_cells = node_size_cells(node);
-	entrylen = (p_addr_cells + c_addr_cells + c_size_cells) * sizeof(cell_t);
-
-	if (prop->val.len == 0) {
-		if (p_addr_cells != c_addr_cells)
-			FAIL(c, dti, "%s has empty \"ranges\" property but its "
-			     "#address-cells (%d) differs from %s (%d)",
-			     node->fullpath, c_addr_cells, node->parent->fullpath,
-			     p_addr_cells);
-		if (p_size_cells != c_size_cells)
-			FAIL(c, dti, "%s has empty \"ranges\" property but its "
-			     "#size-cells (%d) differs from %s (%d)",
-			     node->fullpath, c_size_cells, node->parent->fullpath,
-			     p_size_cells);
-	} else if ((prop->val.len % entrylen) != 0) {
-		FAIL(c, dti, "\"ranges\" property in %s has invalid length (%d bytes) "
-		     "(parent #address-cells == %d, child #address-cells == %d, "
-		     "#size-cells == %d)", node->fullpath, prop->val.len,
-		     p_addr_cells, c_addr_cells, c_size_cells);
-	}
-}
-WARNING(ranges_format, check_ranges_format, NULL, &addr_size_cells);
-
-/*
- * Style checks
- */
-static void check_avoid_default_addr_size(struct check *c, struct dt_info *dti,
-					  struct node *node)
-{
-	struct property *reg, *ranges;
-
-	if (!node->parent)
-		return; /* Ignore root node */
-
-	reg = get_property(node, "reg");
-	ranges = get_property(node, "ranges");
-
-	if (!reg && !ranges)
-		return;
-
-	if (node->parent->addr_cells == -1)
-		FAIL(c, dti, "Relying on default #address-cells value for %s",
-		     node->fullpath);
-
-	if (node->parent->size_cells == -1)
-		FAIL(c, dti, "Relying on default #size-cells value for %s",
-		     node->fullpath);
-}
-WARNING(avoid_default_addr_size, check_avoid_default_addr_size, NULL,
-	&addr_size_cells);
-
-static void check_obsolete_chosen_interrupt_controller(struct check *c,
-						       struct dt_info *dti,
-						       struct node *node)
-{
-	struct node *dt = dti->dt;
-	struct node *chosen;
-	struct property *prop;
-
-	if (node != dt)
-		return;
-
-
-	chosen = get_node_by_path(dt, "/chosen");
-	if (!chosen)
-		return;
-
-	prop = get_property(chosen, "interrupt-controller");
-	if (prop)
-		FAIL(c, dti, "/chosen has obsolete \"interrupt-controller\" "
-		     "property");
-}
-WARNING(obsolete_chosen_interrupt_controller,
-	check_obsolete_chosen_interrupt_controller, NULL);
-
-static struct check *check_table[] = {
-	&duplicate_node_names, &duplicate_property_names,
-	&node_name_chars, &node_name_format, &property_name_chars,
-	&name_is_string, &name_properties,
-
-	&duplicate_label,
-
-	&explicit_phandles,
-	&phandle_references, &path_references,
-
-	&address_cells_is_cell, &size_cells_is_cell, &interrupt_cells_is_cell,
-	&device_type_is_string, &model_is_string, &status_is_string,
-
-	&property_name_chars_strict,
-	&node_name_chars_strict,
-
-	&addr_size_cells, &reg_format, &ranges_format,
-
-	&unit_address_vs_reg,
-
-	&avoid_default_addr_size,
-	&obsolete_chosen_interrupt_controller,
-
-	&always_fail,
-};
-
-static void enable_warning_error(struct check *c, bool warn, bool error)
-{
-	int i;
-
-	/* Raising level, also raise it for prereqs */
-	if ((warn && !c->warn) || (error && !c->error))
-		for (i = 0; i < c->num_prereqs; i++)
-			enable_warning_error(c->prereq[i], warn, error);
-
-	c->warn = c->warn || warn;
-	c->error = c->error || error;
-}
-
-static void disable_warning_error(struct check *c, bool warn, bool error)
-{
-	int i;
-
-	/* Lowering level, also lower it for things this is the prereq
-	 * for */
-	if ((warn && c->warn) || (error && c->error)) {
-		for (i = 0; i < ARRAY_SIZE(check_table); i++) {
-			struct check *cc = check_table[i];
-			int j;
-
-			for (j = 0; j < cc->num_prereqs; j++)
-				if (cc->prereq[j] == c)
-					disable_warning_error(cc, warn, error);
-		}
-	}
-
-	c->warn = c->warn && !warn;
-	c->error = c->error && !error;
-}
-
-void parse_checks_option(bool warn, bool error, const char *arg)
-{
-	int i;
-	const char *name = arg;
-	bool enable = true;
-
-	if ((strncmp(arg, "no-", 3) == 0)
-	    || (strncmp(arg, "no_", 3) == 0)) {
-		name = arg + 3;
-		enable = false;
-	}
-
-	for (i = 0; i < ARRAY_SIZE(check_table); i++) {
-		struct check *c = check_table[i];
-
-		if (streq(c->name, name)) {
-			if (enable)
-				enable_warning_error(c, warn, error);
-			else
-				disable_warning_error(c, warn, error);
-			return;
-		}
-	}
-
-	die("Unrecognized check name \"%s\"\n", name);
-}
-
-void process_checks(bool force, struct dt_info *dti)
-{
-	int i;
-	int error = 0;
-
-	for (i = 0; i < ARRAY_SIZE(check_table); i++) {
-		struct check *c = check_table[i];
-
-		if (c->warn || c->error)
-			error = error || run_check(c, dti);
-	}
-
-	if (error) {
-		if (!force) {
-			fprintf(stderr, "ERROR: Input tree has errors, aborting "
-				"(use -f to force output)\n");
-			exit(2);
-		} else if (quiet < 3) {
-			fprintf(stderr, "Warning: Input tree has errors, "
-				"output forced\n");
-		}
-	}
-}
diff --git a/contrib/dtc/data.c b/contrib/dtc/data.c
deleted file mode 100644
index 8cae23746882..000000000000
--- a/contrib/dtc/data.c
+++ /dev/null
@@ -1,269 +0,0 @@
-/*
- * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2005.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
- *                                                                   USA
- */
-
-#include "dtc.h"
-
-void data_free(struct data d)
-{
-	struct marker *m, *nm;
-
-	m = d.markers;
-	while (m) {
-		nm = m->next;
-		free(m->ref);
-		free(m);
-		m = nm;
-	}
-
-	if (d.val)
-		free(d.val);
-}
-
-struct data data_grow_for(struct data d, int xlen)
-{
-	struct data nd;
-	int newsize;
-
-	if (xlen == 0)
-		return d;
-
-	nd = d;
-
-	newsize = xlen;
-
-	while ((d.len + xlen) > newsize)
-		newsize *= 2;
-
-	nd.val = xrealloc(d.val, newsize);
-
-	return nd;
-}
-
-struct data data_copy_mem(const char *mem, int len)
-{
-	struct data d;
-
-	d = data_grow_for(empty_data, len);
-
-	d.len = len;
-	memcpy(d.val, mem, len);
-
-	return d;
-}
-
-struct data data_copy_escape_string(const char *s, int len)
-{
-	int i = 0;
-	struct data d;
-	char *q;
-
-	d = data_grow_for(empty_data, len + 1);
-
-	q = d.val;
-	while (i < len) {
-		char c = s[i++];
-
-		if (c == '\\')
-			c = get_escape_char(s, &i);
-
-		q[d.len++] = c;
-	}
-
-	q[d.len++] = '\0';
-	return d;
-}
-
-struct data data_copy_file(FILE *f, size_t maxlen)
-{
-	struct data d = empty_data;
-
-	while (!feof(f) && (d.len < maxlen)) {
-		size_t chunksize, ret;
-
-		if (maxlen == -1)
-			chunksize = 4096;
-		else
-			chunksize = maxlen - d.len;
-
-		d = data_grow_for(d, chunksize);
-		ret = fread(d.val + d.len, 1, chunksize, f);
-
-		if (ferror(f))
-			die("Error reading file into data: %s", strerror(errno));
-
-		if (d.len + ret < d.len)
-			die("Overflow reading file into data\n");
-
-		d.len += ret;
-	}
-
-	return d;
-}
-
-struct data data_append_data(struct data d, const void *p, int len)
-{
-	d = data_grow_for(d, len);
-	memcpy(d.val + d.len, p, len);
-	d.len += len;
-	return d;
-}
-
-struct data data_insert_at_marker(struct data d, struct marker *m,
-				  const void *p, int len)
-{
-	d = data_grow_for(d, len);
-	memmove(d.val + m->offset + len, d.val + m->offset, d.len - m->offset);
-	memcpy(d.val + m->offset, p, len);
-	d.len += len;
-
-	/* Adjust all markers after the one we're inserting at */
-	m = m->next;
-	for_each_marker(m)
-		m->offset += len;
-	return d;
-}
-
-static struct data data_append_markers(struct data d, struct marker *m)
-{
-	struct marker **mp = &d.markers;
-
-	/* Find the end of the markerlist */
-	while (*mp)
-		mp = &((*mp)->next);
-	*mp = m;
-	return d;
-}
-
-struct data data_merge(struct data d1, struct data d2)
-{
-	struct data d;
-	struct marker *m2 = d2.markers;
-
-	d = data_append_markers(data_append_data(d1, d2.val, d2.len), m2);
-
-	/* Adjust for the length of d1 */
-	for_each_marker(m2)
-		m2->offset += d1.len;
-
-	d2.markers = NULL; /* So data_free() doesn't clobber them */
-	data_free(d2);
-
-	return d;
-}
-
-struct data data_append_integer(struct data d, uint64_t value, int bits)
-{
-	uint8_t value_8;
-	uint16_t value_16;
-	uint32_t value_32;
-	uint64_t value_64;
-
-	switch (bits) {
-	case 8:
-		value_8 = value;
-		return data_append_data(d, &value_8, 1);
-
-	case 16:
-		value_16 = cpu_to_fdt16(value);
-		return data_append_data(d, &value_16, 2);
-
-	case 32:
-		value_32 = cpu_to_fdt32(value);
-		return data_append_data(d, &value_32, 4);
-
-	case 64:
-		value_64 = cpu_to_fdt64(value);
-		return data_append_data(d, &value_64, 8);
-
-	default:
-		die("Invalid literal size (%d)\n", bits);
-	}
-}
-
-struct data data_append_re(struct data d, const struct fdt_reserve_entry *re)
-{
-	struct fdt_reserve_entry bere;
-
-	bere.address = cpu_to_fdt64(re->address);
-	bere.size = cpu_to_fdt64(re->size);
-
-	return data_append_data(d, &bere, sizeof(bere));
-}
-
-struct data data_append_cell(struct data d, cell_t word)
-{
-	return data_append_integer(d, word, sizeof(word) * 8);
-}
-
-struct data data_append_addr(struct data d, uint64_t addr)
-{
-	return data_append_integer(d, addr, sizeof(addr) * 8);
-}
-
-struct data data_append_byte(struct data d, uint8_t byte)
-{
-	return data_append_data(d, &byte, 1);
-}
-
-struct data data_append_zeroes(struct data d, int len)
-{
-	d = data_grow_for(d, len);
-
-	memset(d.val + d.len, 0, len);
-	d.len += len;
-	return d;
-}
-
-struct data data_append_align(struct data d, int align)
-{
-	int newlen = ALIGN(d.len, align);
-	return data_append_zeroes(d, newlen - d.len);
-}
-
-struct data data_add_marker(struct data d, enum markertype type, char *ref)
-{
-	struct marker *m;
-
-	m = xmalloc(sizeof(*m));
-	m->offset = d.len;
-	m->type = type;
-	m->ref = ref;
-	m->next = NULL;
-
-	return data_append_markers(d, m);
-}
-
-bool data_is_one_string(struct data d)
-{
-	int i;
-	int len = d.len;
-
-	if (len == 0)
-		return false;
-
-	for (i = 0; i < len-1; i++)
-		if (d.val[i] == '\0')
-			return false;
-
-	if (d.val[len-1] != '\0')
-		return false;
-
-	return true;
-}
diff --git a/contrib/dtc/dtc-lexer.l b/contrib/dtc/dtc-lexer.l
deleted file mode 100644
index 62e42ffedbb7..000000000000
--- a/contrib/dtc/dtc-lexer.l
+++ /dev/null
@@ -1,324 +0,0 @@
-/*
- * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2005.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
- *                                                                   USA
- */
-
-%option noyywrap nounput noinput never-interactive
-
-%x BYTESTRING
-%x PROPNODENAME
-%s V1
-
-PROPNODECHAR	[a-zA-Z0-9,._+*#?@-]
-PATHCHAR	({PROPNODECHAR}|[/])
-LABEL		[a-zA-Z_][a-zA-Z0-9_]*
-STRING		\"([^\\"]|\\.)*\"
-CHAR_LITERAL	'([^']|\\')*'
-WS		[[:space:]]
-COMMENT		"/*"([^*]|\*+[^*/])*\*+"/"
-LINECOMMENT	"//".*\n
-
-%{
-#include "dtc.h"
-#include "srcpos.h"
-#include "dtc-parser.tab.h"
-
-#define MAX_INCLUDE_NESTING 100
-YY_BUFFER_STATE include_stack[MAX_INCLUDE_NESTING];
-int include_stack_pointer = 0;
-
-YYLTYPE yylloc;
-extern bool treesource_error;
-
-/* CAUTION: this will stop working if we ever use yyless() or yyunput() */
-#define	YY_USER_ACTION \
-	{ \
-		srcpos_update(&yylloc, yytext, yyleng); \
-	}
-
-/*#define LEXDEBUG	1*/
-
-#ifdef LEXDEBUG
-#define DPRINT(fmt, ...)	fprintf(stderr, fmt, ##__VA_ARGS__)
-#else
-#define DPRINT(fmt, ...)	do { } while (0)
-#endif
-
-static int dts_version = 1;
-
-#define BEGIN_DEFAULT()		DPRINT("<V1>\n"); \
-				BEGIN(V1); \
-
-static void push_input_file(const char *filename);
-static bool pop_input_file(void);
-#ifdef __GNUC__
-static void lexical_error(const char *fmt, ...)
-	__attribute__((format (printf, 1, 2)));
-#else
-static void lexical_error(const char *fmt, ...);
-#endif
-
-%}
-
-%%
-<*>"/include/"{WS}*{STRING} {
-			char *name = strchr(yytext, '\"') + 1;
-			yytext[yyleng-1] = '\0';
-			push_input_file(name);
-		}
-
-<*>^"#"(line)?[ \t]+[0-9]+[ \t]+{STRING}([ \t]+[0-9]+)? {
-			char *line, *fnstart, *fnend;
-			struct data fn;
-			/* skip text before line # */
-			line = yytext;
-			while (!isdigit((unsigned char)*line))
-				line++;
-
-			/* regexp ensures that first and list "
-			 * in the whole yytext are those at
-			 * beginning and end of the filename string */
-			fnstart = memchr(yytext, '"', yyleng);
-			for (fnend = yytext + yyleng - 1;
-			     *fnend != '"'; fnend--)
-				;
-			assert(fnstart && fnend && (fnend > fnstart));
-
-			fn = data_copy_escape_string(fnstart + 1,
-						     fnend - fnstart - 1);
-
-			/* Don't allow nuls in filenames */
-			if (memchr(fn.val, '\0', fn.len - 1))
-				lexical_error("nul in line number directive");
-
-			/* -1 since #line is the number of the next line */
-			srcpos_set_line(xstrdup(fn.val), atoi(line) - 1);
-			data_free(fn);
-		}
-
-<*><<EOF>>		{
-			if (!pop_input_file()) {
-				yyterminate();
-			}
-		}
-
-<*>{STRING}	{
-			DPRINT("String: %s\n", yytext);
-			yylval.data = data_copy_escape_string(yytext+1,
-					yyleng-2);
-			return DT_STRING;
-		}
-
-<*>"/dts-v1/"	{
-			DPRINT("Keyword: /dts-v1/\n");
-			dts_version = 1;
-			BEGIN_DEFAULT();
-			return DT_V1;
-		}
-
-<*>"/plugin/"	{
-			DPRINT("Keyword: /plugin/\n");
-			return DT_PLUGIN;
-		}
-
-<*>"/memreserve/"	{
-			DPRINT("Keyword: /memreserve/\n");
-			BEGIN_DEFAULT();
-			return DT_MEMRESERVE;
-		}
-
-<*>"/bits/"	{
-			DPRINT("Keyword: /bits/\n");
-			BEGIN_DEFAULT();
-			return DT_BITS;
-		}
-
-<*>"/delete-property/"	{
-			DPRINT("Keyword: /delete-property/\n");
-			DPRINT("<PROPNODENAME>\n");
-			BEGIN(PROPNODENAME);
-			return DT_DEL_PROP;
-		}
-
-<*>"/delete-node/"	{
-			DPRINT("Keyword: /delete-node/\n");
-			DPRINT("<PROPNODENAME>\n");
-			BEGIN(PROPNODENAME);
-			return DT_DEL_NODE;
-		}
-
-<*>{LABEL}:	{
-			DPRINT("Label: %s\n", yytext);
-			yylval.labelref = xstrdup(yytext);
-			yylval.labelref[yyleng-1] = '\0';
-			return DT_LABEL;
-		}
-
-<V1>([0-9]+|0[xX][0-9a-fA-F]+)(U|L|UL|LL|ULL)? {
-			char *e;
-			DPRINT("Integer Literal: '%s'\n", yytext);
-
-			errno = 0;
-			yylval.integer = strtoull(yytext, &e, 0);
-
-			if (*e && e[strspn(e, "UL")]) {
-				lexical_error("Bad integer literal '%s'",
-					      yytext);
-			}
-
-			if (errno == ERANGE)
-				lexical_error("Integer literal '%s' out of range",
-					      yytext);
-			else
-				/* ERANGE is the only strtoull error triggerable
-				 *  by strings matching the pattern */
-				assert(errno == 0);
-			return DT_LITERAL;
-		}
-
-<*>{CHAR_LITERAL}	{
-			struct data d;
-			DPRINT("Character literal: %s\n", yytext);
-
-			d = data_copy_escape_string(yytext+1, yyleng-2);
-			if (d.len == 1) {
-				lexical_error("Empty character literal");
-				yylval.integer = 0;
-			} else {
-				yylval.integer = (unsigned char)d.val[0];
-
-				if (d.len > 2)
-					lexical_error("Character literal has %d"
-						      " characters instead of 1",
-						      d.len - 1);
-			}
-
-			data_free(d);
-			return DT_CHAR_LITERAL;
-		}
-
-<*>\&{LABEL}	{	/* label reference */
-			DPRINT("Ref: %s\n", yytext+1);
-			yylval.labelref = xstrdup(yytext+1);
-			return DT_REF;
-		}
-
-<*>"&{/"{PATHCHAR}*\}	{	/* new-style path reference */
-			yytext[yyleng-1] = '\0';
-			DPRINT("Ref: %s\n", yytext+2);
-			yylval.labelref = xstrdup(yytext+2);
-			return DT_REF;
-		}
-
-<BYTESTRING>[0-9a-fA-F]{2} {
-			yylval.byte = strtol(yytext, NULL, 16);
-			DPRINT("Byte: %02x\n", (int)yylval.byte);
-			return DT_BYTE;
-		}
-
-<BYTESTRING>"]"	{
-			DPRINT("/BYTESTRING\n");
-			BEGIN_DEFAULT();
-			return ']';
-		}
-
-<PROPNODENAME>\\?{PROPNODECHAR}+ {
-			DPRINT("PropNodeName: %s\n", yytext);
-			yylval.propnodename = xstrdup((yytext[0] == '\\') ?
-							yytext + 1 : yytext);
-			BEGIN_DEFAULT();
-			return DT_PROPNODENAME;
-		}
-
-"/incbin/"	{
-			DPRINT("Binary Include\n");
-			return DT_INCBIN;
-		}
-
-<*>{WS}+	/* eat whitespace */
-<*>{COMMENT}+	/* eat C-style comments */
-<*>{LINECOMMENT}+ /* eat C++-style comments */
-
-<*>"<<"		{ return DT_LSHIFT; };
-<*>">>"		{ return DT_RSHIFT; };
-<*>"<="		{ return DT_LE; };
-<*>">="		{ return DT_GE; };
-<*>"=="		{ return DT_EQ; };
-<*>"!="		{ return DT_NE; };
-<*>"&&"		{ return DT_AND; };
-<*>"||"		{ return DT_OR; };
-
-<*>.		{
-			DPRINT("Char: %c (\\x%02x)\n", yytext[0],
-				(unsigned)yytext[0]);
-			if (yytext[0] == '[') {
-				DPRINT("<BYTESTRING>\n");
-				BEGIN(BYTESTRING);
-			}
-			if ((yytext[0] == '{')
-			    || (yytext[0] == ';')) {
-				DPRINT("<PROPNODENAME>\n");
-				BEGIN(PROPNODENAME);
-			}
-			return yytext[0];
-		}
-
-%%
-
-static void push_input_file(const char *filename)
-{
-	assert(filename);
-
-	assert(include_stack_pointer < MAX_INCLUDE_NESTING);
-
-	srcfile_push(filename);
-
-	yyin = current_srcfile->f;
-
-	include_stack[include_stack_pointer++] = YY_CURRENT_BUFFER;
-
-	yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
-}
-
-
-static bool pop_input_file(void)
-{
-	if (srcfile_pop() == 0)
-		return false;
-
-	assert(include_stack_pointer > 0);
-
-	yy_delete_buffer( YY_CURRENT_BUFFER );
-
-	yy_switch_to_buffer( include_stack[--include_stack_pointer] );
-
-	yyin = current_srcfile->f;
-
-	return true;
-}
-
-static void lexical_error(const char *fmt, ...)
-{
-	va_list ap;
-
-	va_start(ap, fmt);
-	srcpos_verror(&yylloc, "Lexical error", fmt, ap);
-	va_end(ap);
-
-	treesource_error = true;
-}
diff --git a/contrib/dtc/dtc-parser.y b/contrib/dtc/dtc-parser.y
deleted file mode 100644
index c43edd51dad5..000000000000
--- a/contrib/dtc/dtc-parser.y
+++ /dev/null
@@ -1,521 +0,0 @@
-/*
- * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2005.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
- *                                                                   USA
- */
-%{
-#include <stdio.h>
-#include <inttypes.h>
-
-#include "dtc.h"
-#include "srcpos.h"
-
-YYLTYPE yylloc;
-
-extern int yylex(void);
-extern void yyerror(char const *s);
-#define ERROR(loc, ...) \
-	do { \
-		srcpos_error((loc), "Error", __VA_ARGS__); \
-		treesource_error = true; \
-	} while (0)
-
-extern struct dt_info *parser_output;
-extern bool treesource_error;
-%}
-
-%union {
-	char *propnodename;
-	char *labelref;
-	uint8_t byte;
-	struct data data;
-
-	struct {
-		struct data	data;
-		int		bits;
-	} array;
-
-	struct property *prop;
-	struct property *proplist;
-	struct node *node;
-	struct node *nodelist;
-	struct reserve_info *re;
-	uint64_t integer;
-	unsigned int flags;
-}
-
-%token DT_V1
-%token DT_PLUGIN
-%token DT_MEMRESERVE
-%token DT_LSHIFT DT_RSHIFT DT_LE DT_GE DT_EQ DT_NE DT_AND DT_OR
-%token DT_BITS
-%token DT_DEL_PROP
-%token DT_DEL_NODE
-%token <propnodename> DT_PROPNODENAME
-%token <integer> DT_LITERAL
-%token <integer> DT_CHAR_LITERAL
-%token <byte> DT_BYTE
-%token <data> DT_STRING
-%token <labelref> DT_LABEL
-%token <labelref> DT_REF
-%token DT_INCBIN
-
-%type <data> propdata
-%type <data> propdataprefix
-%type <flags> header
-%type <flags> headers
-%type <re> memreserve
-%type <re> memreserves
-%type <array> arrayprefix
-%type <data> bytestring
-%type <prop> propdef
-%type <proplist> proplist
-
-%type <node> devicetree
-%type <node> nodedef
-%type <node> subnode
-%type <nodelist> subnodes
-
-%type <integer> integer_prim
-%type <integer> integer_unary
-%type <integer> integer_mul
-%type <integer> integer_add
-%type <integer> integer_shift
-%type <integer> integer_rela
-%type <integer> integer_eq
-%type <integer> integer_bitand
-%type <integer> integer_bitxor
-%type <integer> integer_bitor
-%type <integer> integer_and
-%type <integer> integer_or
-%type <integer> integer_trinary
-%type <integer> integer_expr
-
-%%
-
-sourcefile:
-	  headers memreserves devicetree
-		{
-			parser_output = build_dt_info($1, $2, $3,
-			                              guess_boot_cpuid($3));
-		}
-	;
-
-header:
-	  DT_V1 ';'
-		{
-			$$ = DTSF_V1;
-		}
-	| DT_V1 ';' DT_PLUGIN ';'
-		{
-			$$ = DTSF_V1 | DTSF_PLUGIN;
-		}
-	;
-
-headers:
-	  header
-	| header headers
-		{
-			if ($2 != $1)
-				ERROR(&yylloc, "Header flags don't match earlier ones");
-			$$ = $1;
-		}
-	;
-
-memreserves:
-	  /* empty */
-		{
-			$$ = NULL;
-		}
-	| memreserve memreserves
-		{
-			$$ = chain_reserve_entry($1, $2);
-		}
-	;
-
-memreserve:
-	  DT_MEMRESERVE integer_prim integer_prim ';'
-		{
-			$$ = build_reserve_entry($2, $3);
-		}
-	| DT_LABEL memreserve
-		{
-			add_label(&$2->labels, $1);
-			$$ = $2;
-		}
-	;
-
-devicetree:
-	  '/' nodedef
-		{
-			$$ = name_node($2, "");
-		}
-	| devicetree '/' nodedef
-		{
-			$$ = merge_nodes($1, $3);
-		}
-
-	| devicetree DT_LABEL DT_REF nodedef
-		{
-			struct node *target = get_node_by_ref($1, $3);
-
-			if (target) {
-				add_label(&target->labels, $2);
-				merge_nodes(target, $4);
-			} else
-				ERROR(&yylloc, "Label or path %s not found", $3);
-			$$ = $1;
-		}
-	| devicetree DT_REF nodedef
-		{
-			struct node *target = get_node_by_ref($1, $2);
-
-			if (target)
-				merge_nodes(target, $3);
-			else
-				ERROR(&yylloc, "Label or path %s not found", $2);
-			$$ = $1;
-		}
-	| devicetree DT_DEL_NODE DT_REF ';'
-		{
-			struct node *target = get_node_by_ref($1, $3);
-
-			if (target)
-				delete_node(target);
-			else
-				ERROR(&yylloc, "Label or path %s not found", $3);
-
-
-			$$ = $1;
-		}
-	;
-
-nodedef:
-	  '{' proplist subnodes '}' ';'
-		{
-			$$ = build_node($2, $3);
-		}
-	;
-
-proplist:
-	  /* empty */
-		{
-			$$ = NULL;
-		}
-	| proplist propdef
-		{
-			$$ = chain_property($2, $1);
-		}
-	;
-
-propdef:
-	  DT_PROPNODENAME '=' propdata ';'
-		{
-			$$ = build_property($1, $3);
-		}
-	| DT_PROPNODENAME ';'
-		{
-			$$ = build_property($1, empty_data);
-		}
-	| DT_DEL_PROP DT_PROPNODENAME ';'
-		{
-			$$ = build_property_delete($2);
-		}
-	| DT_LABEL propdef
-		{
-			add_label(&$2->labels, $1);
-			$$ = $2;
-		}
-	;
-
-propdata:
-	  propdataprefix DT_STRING
-		{
-			$$ = data_merge($1, $2);
-		}
-	| propdataprefix arrayprefix '>'
-		{
-			$$ = data_merge($1, $2.data);
-		}
-	| propdataprefix '[' bytestring ']'
-		{
-			$$ = data_merge($1, $3);
-		}
-	| propdataprefix DT_REF
-		{
-			$$ = data_add_marker($1, REF_PATH, $2);
-		}
-	| propdataprefix DT_INCBIN '(' DT_STRING ',' integer_prim ',' integer_prim ')'
-		{
-			FILE *f = srcfile_relative_open($4.val, NULL);
-			struct data d;
-
-			if ($6 != 0)
-				if (fseek(f, $6, SEEK_SET) != 0)
-					die("Couldn't seek to offset %llu in \"%s\": %s",
-					    (unsigned long long)$6, $4.val,
-					    strerror(errno));
-
-			d = data_copy_file(f, $8);
-
-			$$ = data_merge($1, d);
-			fclose(f);
-		}
-	| propdataprefix DT_INCBIN '(' DT_STRING ')'
-		{
-			FILE *f = srcfile_relative_open($4.val, NULL);
-			struct data d = empty_data;
-
-			d = data_copy_file(f, -1);
-
-			$$ = data_merge($1, d);
-			fclose(f);
-		}
-	| propdata DT_LABEL
-		{
-			$$ = data_add_marker($1, LABEL, $2);
-		}
-	;
-
-propdataprefix:
-	  /* empty */
-		{
-			$$ = empty_data;
-		}
-	| propdata ','
-		{
-			$$ = $1;
-		}
-	| propdataprefix DT_LABEL
-		{
-			$$ = data_add_marker($1, LABEL, $2);
-		}
-	;
-
-arrayprefix:
-	DT_BITS DT_LITERAL '<'
-		{
-			unsigned long long bits;
-
-			bits = $2;
-
-			if ((bits !=  8) && (bits != 16) &&
-			    (bits != 32) && (bits != 64)) {
-				ERROR(&yylloc, "Array elements must be"
-				      " 8, 16, 32 or 64-bits");
-				bits = 32;
-			}
-
-			$$.data = empty_data;
-			$$.bits = bits;
-		}
-	| '<'
-		{
-			$$.data = empty_data;
-			$$.bits = 32;
-		}
-	| arrayprefix integer_prim
-		{
-			if ($1.bits < 64) {
-				uint64_t mask = (1ULL << $1.bits) - 1;
-				/*
-				 * Bits above mask must either be all zero
-				 * (positive within range of mask) or all one
-				 * (negative and sign-extended). The second
-				 * condition is true if when we set all bits
-				 * within the mask to one (i.e. | in the
-				 * mask), all bits are one.
-				 */
-				if (($2 > mask) && (($2 | mask) != -1ULL))
-					ERROR(&yylloc, "Value out of range for"
-					      " %d-bit array element", $1.bits);
-			}
-
-			$$.data = data_append_integer($1.data, $2, $1.bits);
-		}
-	| arrayprefix DT_REF
-		{
-			uint64_t val = ~0ULL >> (64 - $1.bits);
-
-			if ($1.bits == 32)
-				$1.data = data_add_marker($1.data,
-							  REF_PHANDLE,
-							  $2);
-			else
-				ERROR(&yylloc, "References are only allowed in "
-					    "arrays with 32-bit elements.");
-
-			$$.data = data_append_integer($1.data, val, $1.bits);
-		}
-	| arrayprefix DT_LABEL
-		{
-			$$.data = data_add_marker($1.data, LABEL, $2);
-		}
-	;
-
-integer_prim:
-	  DT_LITERAL
-	| DT_CHAR_LITERAL
-	| '(' integer_expr ')'
-		{
-			$$ = $2;
-		}
-	;
-
-integer_expr:
-	integer_trinary
-	;
-
-integer_trinary:
-	  integer_or
-	| integer_or '?' integer_expr ':' integer_trinary { $$ = $1 ? $3 : $5; }
-	;
-
-integer_or:
-	  integer_and
-	| integer_or DT_OR integer_and { $$ = $1 || $3; }
-	;
-
-integer_and:
-	  integer_bitor
-	| integer_and DT_AND integer_bitor { $$ = $1 && $3; }
-	;
-
-integer_bitor:
-	  integer_bitxor
-	| integer_bitor '|' integer_bitxor { $$ = $1 | $3; }
-	;
-
-integer_bitxor:
-	  integer_bitand
-	| integer_bitxor '^' integer_bitand { $$ = $1 ^ $3; }
-	;
-
-integer_bitand:
-	  integer_eq
-	| integer_bitand '&' integer_eq { $$ = $1 & $3; }
-	;
-
-integer_eq:
-	  integer_rela
-	| integer_eq DT_EQ integer_rela { $$ = $1 == $3; }
-	| integer_eq DT_NE integer_rela { $$ = $1 != $3; }
-	;
-
-integer_rela:
-	  integer_shift
-	| integer_rela '<' integer_shift { $$ = $1 < $3; }
-	| integer_rela '>' integer_shift { $$ = $1 > $3; }
-	| integer_rela DT_LE integer_shift { $$ = $1 <= $3; }
-	| integer_rela DT_GE integer_shift { $$ = $1 >= $3; }
-	;
-
-integer_shift:
-	  integer_shift DT_LSHIFT integer_add { $$ = $1 << $3; }
-	| integer_shift DT_RSHIFT integer_add { $$ = $1 >> $3; }
-	| integer_add
-	;
-
-integer_add:
-	  integer_add '+' integer_mul { $$ = $1 + $3; }
-	| integer_add '-' integer_mul { $$ = $1 - $3; }
-	| integer_mul
-	;
-
-integer_mul:
-	  integer_mul '*' integer_unary { $$ = $1 * $3; }
-	| integer_mul '/' integer_unary
-		{
-			if ($3 != 0) {
-				$$ = $1 / $3;
-			} else {
-				ERROR(&yylloc, "Division by zero");
-				$$ = 0;
-			}
-		}
-	| integer_mul '%' integer_unary
-		{
-			if ($3 != 0) {
-				$$ = $1 % $3;
-			} else {
-				ERROR(&yylloc, "Division by zero");
-				$$ = 0;
-			}
-		}
-	| integer_unary
-	;
-
-integer_unary:
-	  integer_prim
-	| '-' integer_unary { $$ = -$2; }
-	| '~' integer_unary { $$ = ~$2; }
-	| '!' integer_unary { $$ = !$2; }
-	;
-
-bytestring:
-	  /* empty */
-		{
-			$$ = empty_data;
-		}
-	| bytestring DT_BYTE
-		{
-			$$ = data_append_byte($1, $2);
-		}
-	| bytestring DT_LABEL
-		{
-			$$ = data_add_marker($1, LABEL, $2);
-		}
-	;
-
-subnodes:
-	  /* empty */
-		{
-			$$ = NULL;
-		}
-	| subnode subnodes
-		{
-			$$ = chain_node($1, $2);
-		}
-	| subnode propdef
-		{
-			ERROR(&yylloc, "Properties must precede subnodes");
-			YYERROR;
-		}
-	;
-
-subnode:
-	  DT_PROPNODENAME nodedef
-		{
-			$$ = name_node($2, $1);
-		}
-	| DT_DEL_NODE DT_PROPNODENAME ';'
-		{
-			$$ = name_node(build_node_delete(), $2);
-		}
-	| DT_LABEL subnode
-		{
-			add_label(&$2->labels, $1);
-			$$ = $2;
-		}
-	;
-
-%%
-
-void yyerror(char const *s)
-{
-	ERROR(&yylloc, "%s", s);
-}
diff --git a/contrib/dtc/dtc.c b/contrib/dtc/dtc.c
deleted file mode 100644
index bb1e52b3181c..000000000000
--- a/contrib/dtc/dtc.c
+++ /dev/null
@@ -1,366 +0,0 @@
-/*
- * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2005.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
- *                                                                   USA
- */
-
-#include <sys/stat.h>
-
-#include "dtc.h"
-#include "srcpos.h"
-
-/*
- * Command line options
- */
-int quiet;		/* Level of quietness */
-int reservenum;		/* Number of memory reservation slots */
-int minsize;		/* Minimum blob size */
-int padsize;		/* Additional padding to blob */
-int alignsize;		/* Additional padding to blob accroding to the alignsize */
-int phandle_format = PHANDLE_BOTH;	/* Use linux,phandle or phandle properties */
-int generate_symbols;	/* enable symbols & fixup support */
-int generate_fixups;		/* suppress generation of fixups on symbol support */
-int auto_label_aliases;		/* auto generate labels -> aliases */
-
-static int is_power_of_2(int x)
-{
-	return (x > 0) && ((x & (x - 1)) == 0);
-}
-
-static void fill_fullpaths(struct node *tree, const char *prefix)
-{
-	struct node *child;
-	const char *unit;
-
-	tree->fullpath = join_path(prefix, tree->name);
-
-	unit = strchr(tree->name, '@');
-	if (unit)
-		tree->basenamelen = unit - tree->name;
-	else
-		tree->basenamelen = strlen(tree->name);
-
-	for_each_child(tree, child)
-		fill_fullpaths(child, tree->fullpath);
-}
-
-/* Usage related data. */
-#define FDT_VERSION(version)	_FDT_VERSION(version)
-#define _FDT_VERSION(version)	#version
-static const char usage_synopsis[] = "dtc [options] <input file>";
-static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:a:fb:i:H:sW:E:@Ahv";
-static struct option const usage_long_opts[] = {
-	{"quiet",            no_argument, NULL, 'q'},
-	{"in-format",         a_argument, NULL, 'I'},
-	{"out",               a_argument, NULL, 'o'},
-	{"out-format",        a_argument, NULL, 'O'},
-	{"out-version",       a_argument, NULL, 'V'},
-	{"out-dependency",    a_argument, NULL, 'd'},
-	{"reserve",           a_argument, NULL, 'R'},
-	{"space",             a_argument, NULL, 'S'},
-	{"pad",               a_argument, NULL, 'p'},
-	{"align",             a_argument, NULL, 'a'},
-	{"boot-cpu",          a_argument, NULL, 'b'},
-	{"force",            no_argument, NULL, 'f'},
-	{"include",           a_argument, NULL, 'i'},
-	{"sort",             no_argument, NULL, 's'},
-	{"phandle",           a_argument, NULL, 'H'},
-	{"warning",           a_argument, NULL, 'W'},
-	{"error",             a_argument, NULL, 'E'},
-	{"symbols",	     no_argument, NULL, '@'},
-	{"auto-alias",       no_argument, NULL, 'A'},
-	{"help",             no_argument, NULL, 'h'},
-	{"version",          no_argument, NULL, 'v'},
-	{NULL,               no_argument, NULL, 0x0},
-};
-static const char * const usage_opts_help[] = {
-	"\n\tQuiet: -q suppress warnings, -qq errors, -qqq all",
-	"\n\tInput formats are:\n"
-	 "\t\tdts - device tree source text\n"
-	 "\t\tdtb - device tree blob\n"
-	 "\t\tfs  - /proc/device-tree style directory",
-	"\n\tOutput file",
-	"\n\tOutput formats are:\n"
-	 "\t\tdts - device tree source text\n"
-	 "\t\tdtb - device tree blob\n"
-	 "\t\tasm - assembler source",
-	"\n\tBlob version to produce, defaults to "FDT_VERSION(DEFAULT_FDT_VERSION)" (for dtb and asm output)",
-	"\n\tOutput dependency file",
-	"\n\tMake space for <number> reserve map entries (for dtb and asm output)",
-	"\n\tMake the blob at least <bytes> long (extra space)",
-	"\n\tAdd padding to the blob of <bytes> long (extra space)",
-	"\n\tMake the blob align to the <bytes> (extra space)",
-	"\n\tSet the physical boot cpu",
-	"\n\tTry to produce output even if the input tree has errors",
-	"\n\tAdd a path to search for include files",
-	"\n\tSort nodes and properties before outputting (useful for comparing trees)",
-	"\n\tValid phandle formats are:\n"
-	 "\t\tlegacy - \"linux,phandle\" properties only\n"
-	 "\t\tepapr  - \"phandle\" properties only\n"
-	 "\t\tboth   - Both \"linux,phandle\" and \"phandle\" properties",
-	"\n\tEnable/disable warnings (prefix with \"no-\")",
-	"\n\tEnable/disable errors (prefix with \"no-\")",
-	"\n\tEnable generation of symbols",
-	"\n\tEnable auto-alias of labels",
-	"\n\tPrint this help and exit",
-	"\n\tPrint version and exit",
-	NULL,
-};
-
-static const char *guess_type_by_name(const char *fname, const char *fallback)
-{
-	const char *s;
-
-	s = strrchr(fname, '.');
-	if (s == NULL)
-		return fallback;
-	if (!strcasecmp(s, ".dts"))
-		return "dts";
-	if (!strcasecmp(s, ".dtb"))
-		return "dtb";
-	return fallback;
-}
-
-static const char *guess_input_format(const char *fname, const char *fallback)
-{
-	struct stat statbuf;
-	uint32_t magic;
-	FILE *f;
-
-	if (stat(fname, &statbuf) != 0)
-		return fallback;
-
-	if (S_ISDIR(statbuf.st_mode))
-		return "fs";
-
-	if (!S_ISREG(statbuf.st_mode))
-		return fallback;
-
-	f = fopen(fname, "r");
-	if (f == NULL)
-		return fallback;
-	if (fread(&magic, 4, 1, f) != 1) {
-		fclose(f);
-		return fallback;
-	}
-	fclose(f);
-
-	magic = fdt32_to_cpu(magic);
-	if (magic == FDT_MAGIC)
-		return "dtb";
-
-	return guess_type_by_name(fname, fallback);
-}
-
-int main(int argc, char *argv[])
-{
-	struct dt_info *dti;
-	const char *inform = NULL;
-	const char *outform = NULL;
-	const char *outname = "-";
-	const char *depname = NULL;
-	bool force = false, sort = false;
-	const char *arg;
-	int opt;
-	FILE *outf = NULL;
-	int outversion = DEFAULT_FDT_VERSION;
-	long long cmdline_boot_cpuid = -1;
-
-	quiet      = 0;
-	reservenum = 0;
-	minsize    = 0;
-	padsize    = 0;
-	alignsize  = 0;
-
-	while ((opt = util_getopt_long()) != EOF) {
-		switch (opt) {
-		case 'I':
-			inform = optarg;
-			break;
-		case 'O':
-			outform = optarg;
-			break;
-		case 'o':
-			outname = optarg;
-			break;
-		case 'V':
-			outversion = strtol(optarg, NULL, 0);
-			break;
-		case 'd':
-			depname = optarg;
-			break;
-		case 'R':
-			reservenum = strtol(optarg, NULL, 0);
-			break;
-		case 'S':
-			minsize = strtol(optarg, NULL, 0);
-			break;
-		case 'p':
-			padsize = strtol(optarg, NULL, 0);
-			break;
-		case 'a':
-			alignsize = strtol(optarg, NULL, 0);
-			if (!is_power_of_2(alignsize))
-				die("Invalid argument \"%d\" to -a option\n",
-				    alignsize);
-			break;
-		case 'f':
-			force = true;
-			break;
-		case 'q':
-			quiet++;
-			break;
-		case 'b':
-			cmdline_boot_cpuid = strtoll(optarg, NULL, 0);
-			break;
-		case 'i':
-			srcfile_add_search_path(optarg);
-			break;
-		case 'v':
-			util_version();
-		case 'H':
-			if (streq(optarg, "legacy"))
-				phandle_format = PHANDLE_LEGACY;
-			else if (streq(optarg, "epapr"))
-				phandle_format = PHANDLE_EPAPR;
-			else if (streq(optarg, "both"))
-				phandle_format = PHANDLE_BOTH;
-			else
-				die("Invalid argument \"%s\" to -H option\n",
-				    optarg);
-			break;
-
-		case 's':
-			sort = true;
-			break;
-
-		case 'W':
-			parse_checks_option(true, false, optarg);
-			break;
-
-		case 'E':
-			parse_checks_option(false, true, optarg);
-			break;
-
-		case '@':
-			generate_symbols = 1;
-			break;
-		case 'A':
-			auto_label_aliases = 1;
-			break;
-
-		case 'h':
-			usage(NULL);
-		default:
-			usage("unknown option");
-		}
-	}
-
-	if (argc > (optind+1))
-		usage("missing files");
-	else if (argc < (optind+1))
-		arg = "-";
-	else
-		arg = argv[optind];
-
-	/* minsize and padsize are mutually exclusive */
-	if (minsize && padsize)
-		die("Can't set both -p and -S\n");
-
-	if (depname) {
-		depfile = fopen(depname, "w");
-		if (!depfile)
-			die("Couldn't open dependency file %s: %s\n", depname,
-			    strerror(errno));
-		fprintf(depfile, "%s:", outname);
-	}
-
-	if (inform == NULL)
-		inform = guess_input_format(arg, "dts");
-	if (outform == NULL) {
-		outform = guess_type_by_name(outname, NULL);
-		if (outform == NULL) {
-			if (streq(inform, "dts"))
-				outform = "dtb";
-			else
-				outform = "dts";
-		}
-	}
-	if (streq(inform, "dts"))
-		dti = dt_from_source(arg);
-	else if (streq(inform, "fs"))
-		dti = dt_from_fs(arg);
-	else if(streq(inform, "dtb"))
-		dti = dt_from_blob(arg);
-	else
-		die("Unknown input format \"%s\"\n", inform);
-
-	dti->outname = outname;
-
-	if (depfile) {
-		fputc('\n', depfile);
-		fclose(depfile);
-	}
-
-	if (cmdline_boot_cpuid != -1)
-		dti->boot_cpuid_phys = cmdline_boot_cpuid;
-
-	fill_fullpaths(dti->dt, "");
-	process_checks(force, dti);
-
-	/* on a plugin, generate by default */
-	if (dti->dtsflags & DTSF_PLUGIN) {
-		generate_fixups = 1;
-	}
-
-	if (auto_label_aliases)
-		generate_label_tree(dti, "aliases", false);
-
-	if (generate_symbols)
-		generate_label_tree(dti, "__symbols__", true);
-
-	if (generate_fixups) {
-		generate_fixups_tree(dti, "__fixups__");
-		generate_local_fixups_tree(dti, "__local_fixups__");
-	}
-
-	if (sort)
-		sort_tree(dti);
-
-	if (streq(outname, "-")) {
-		outf = stdout;
-	} else {
-		outf = fopen(outname, "wb");
-		if (! outf)
-			die("Couldn't open output file %s: %s\n",
-			    outname, strerror(errno));
-	}
-
-	if (streq(outform, "dts")) {
-		dt_to_source(outf, dti);
-	} else if (streq(outform, "dtb")) {
-		dt_to_blob(outf, dti, outversion);
-	} else if (streq(outform, "asm")) {
-		dt_to_asm(outf, dti, outversion);
-	} else if (streq(outform, "null")) {
-		/* do nothing */
-	} else {
-		die("Unknown output format \"%s\"\n", outform);
-	}
-
-	exit(0);
-}
diff --git a/contrib/dtc/dtc.h b/contrib/dtc/dtc.h
deleted file mode 100644
index 1ac2a1e3a4a5..000000000000
--- a/contrib/dtc/dtc.h
+++ /dev/null
@@ -1,285 +0,0 @@
-#ifndef _DTC_H
-#define _DTC_H
-
-/*
- * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2005.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
- *                                                                   USA
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <stdbool.h>
-#include <stdarg.h>
-#include <assert.h>
-#include <ctype.h>
-#include <errno.h>
-#include <unistd.h>
-
-#include <libfdt_env.h>
-#include <fdt.h>
-
-#include "util.h"
-
-#ifdef DEBUG
-#define debug(...)	printf(__VA_ARGS__)
-#else
-#define debug(...)
-#endif
-
-
-#define DEFAULT_FDT_VERSION	17
-
-/*
- * Command line options
- */
-extern int quiet;		/* Level of quietness */
-extern int reservenum;		/* Number of memory reservation slots */
-extern int minsize;		/* Minimum blob size */
-extern int padsize;		/* Additional padding to blob */
-extern int alignsize;		/* Additional padding to blob accroding to the alignsize */
-extern int phandle_format;	/* Use linux,phandle or phandle properties */
-extern int generate_symbols;	/* generate symbols for nodes with labels */
-extern int generate_fixups;	/* generate fixups */
-extern int auto_label_aliases;	/* auto generate labels -> aliases */
-
-#define PHANDLE_LEGACY	0x1
-#define PHANDLE_EPAPR	0x2
-#define PHANDLE_BOTH	0x3
-
-typedef uint32_t cell_t;
-
-
-#define streq(a, b)	(strcmp((a), (b)) == 0)
-#define strneq(a, b, n)	(strncmp((a), (b), (n)) == 0)
-
-#define ALIGN(x, a)	(((x) + (a) - 1) & ~((a) - 1))
-
-/* Data blobs */
-enum markertype {
-	REF_PHANDLE,
-	REF_PATH,
-	LABEL,
-};
-
-struct  marker {
-	enum markertype type;
-	int offset;
-	char *ref;
-	struct marker *next;
-};
-
-struct data {
-	int len;
-	char *val;
-	struct marker *markers;
-};
-
-
-#define empty_data ((struct data){ 0 /* all .members = 0 or NULL */ })
-
-#define for_each_marker(m) \
-	for (; (m); (m) = (m)->next)
-#define for_each_marker_of_type(m, t) \
-	for_each_marker(m) \
-		if ((m)->type == (t))
-
-void data_free(struct data d);
-
-struct data data_grow_for(struct data d, int xlen);
-
-struct data data_copy_mem(const char *mem, int len);
-struct data data_copy_escape_string(const char *s, int len);
-struct data data_copy_file(FILE *f, size_t len);
-
-struct data data_append_data(struct data d, const void *p, int len);
-struct data data_insert_at_marker(struct data d, struct marker *m,
-				  const void *p, int len);
-struct data data_merge(struct data d1, struct data d2);
-struct data data_append_cell(struct data d, cell_t word);
-struct data data_append_integer(struct data d, uint64_t word, int bits);
-struct data data_append_re(struct data d, const struct fdt_reserve_entry *re);
-struct data data_append_addr(struct data d, uint64_t addr);
-struct data data_append_byte(struct data d, uint8_t byte);
-struct data data_append_zeroes(struct data d, int len);
-struct data data_append_align(struct data d, int align);
-
-struct data data_add_marker(struct data d, enum markertype type, char *ref);
-
-bool data_is_one_string(struct data d);
-
-/* DT constraints */
-
-#define MAX_PROPNAME_LEN	31
-#define MAX_NODENAME_LEN	31
-
-/* Live trees */
-struct label {
-	bool deleted;
-	char *label;
-	struct label *next;
-};
-
-struct property {
-	bool deleted;
-	char *name;
-	struct data val;
-
-	struct property *next;
-
-	struct label *labels;
-};
-
-struct node {
-	bool deleted;
-	char *name;
-	struct property *proplist;
-	struct node *children;
-
-	struct node *parent;
-	struct node *next_sibling;
-
-	char *fullpath;
-	int basenamelen;
-
-	cell_t phandle;
-	int addr_cells, size_cells;
-
-	struct label *labels;
-};
-
-#define for_each_label_withdel(l0, l) \
-	for ((l) = (l0); (l); (l) = (l)->next)
-
-#define for_each_label(l0, l) \
-	for_each_label_withdel(l0, l) \
-		if (!(l)->deleted)
-
-#define for_each_property_withdel(n, p) \
-	for ((p) = (n)->proplist; (p); (p) = (p)->next)
-
-#define for_each_property(n, p) \
-	for_each_property_withdel(n, p) \
-		if (!(p)->deleted)
-
-#define for_each_child_withdel(n, c) \
-	for ((c) = (n)->children; (c); (c) = (c)->next_sibling)
-
-#define for_each_child(n, c) \
-	for_each_child_withdel(n, c) \
-		if (!(c)->deleted)
-
-void add_label(struct label **labels, char *label);
-void delete_labels(struct label **labels);
-
-struct property *build_property(char *name, struct data val);
-struct property *build_property_delete(char *name);
-struct property *chain_property(struct property *first, struct property *list);
-struct property *reverse_properties(struct property *first);
-
-struct node *build_node(struct property *proplist, struct node *children);
-struct node *build_node_delete(void);
-struct node *name_node(struct node *node, char *name);
-struct node *chain_node(struct node *first, struct node *list);
-struct node *merge_nodes(struct node *old_node, struct node *new_node);
-
-void add_property(struct node *node, struct property *prop);
-void delete_property_by_name(struct node *node, char *name);
-void delete_property(struct property *prop);
-void add_child(struct node *parent, struct node *child);
-void delete_node_by_name(struct node *parent, char *name);
-void delete_node(struct node *node);
-void append_to_property(struct node *node,
-			char *name, const void *data, int len);
-
-const char *get_unitname(struct node *node);
-struct property *get_property(struct node *node, const char *propname);
-cell_t propval_cell(struct property *prop);
-struct property *get_property_by_label(struct node *tree, const char *label,
-				       struct node **node);
-struct marker *get_marker_label(struct node *tree, const char *label,
-				struct node **node, struct property **prop);
-struct node *get_subnode(struct node *node, const char *nodename);
-struct node *get_node_by_path(struct node *tree, const char *path);
-struct node *get_node_by_label(struct node *tree, const char *label);
-struct node *get_node_by_phandle(struct node *tree, cell_t phandle);
-struct node *get_node_by_ref(struct node *tree, const char *ref);
-cell_t get_node_phandle(struct node *root, struct node *node);
-
-uint32_t guess_boot_cpuid(struct node *tree);
-
-/* Boot info (tree plus memreserve information */
-
-struct reserve_info {
-	struct fdt_reserve_entry re;
-
-	struct reserve_info *next;
-
-	struct label *labels;
-};
-
-struct reserve_info *build_reserve_entry(uint64_t start, uint64_t len);
-struct reserve_info *chain_reserve_entry(struct reserve_info *first,
-					 struct reserve_info *list);
-struct reserve_info *add_reserve_entry(struct reserve_info *list,
-				       struct reserve_info *new);
-
-
-struct dt_info {
-	unsigned int dtsflags;
-	struct reserve_info *reservelist;
-	uint32_t boot_cpuid_phys;
-	struct node *dt;		/* the device tree */
-	const char *outname;		/* filename being written to, "-" for stdout */
-};
-
-/* DTS version flags definitions */
-#define DTSF_V1		0x0001	/* /dts-v1/ */
-#define DTSF_PLUGIN	0x0002	/* /plugin/ */
-
-struct dt_info *build_dt_info(unsigned int dtsflags,
-			      struct reserve_info *reservelist,
-			      struct node *tree, uint32_t boot_cpuid_phys);
-void sort_tree(struct dt_info *dti);
-void generate_label_tree(struct dt_info *dti, char *name, bool allocph);
-void generate_fixups_tree(struct dt_info *dti, char *name);
-void generate_local_fixups_tree(struct dt_info *dti, char *name);
-
-/* Checks */
-
-void parse_checks_option(bool warn, bool error, const char *arg);
-void process_checks(bool force, struct dt_info *dti);
-
-/* Flattened trees */
-
-void dt_to_blob(FILE *f, struct dt_info *dti, int version);
-void dt_to_asm(FILE *f, struct dt_info *dti, int version);
-
-struct dt_info *dt_from_blob(const char *fname);
-
-/* Tree source */
-
-void dt_to_source(FILE *f, struct dt_info *dti);
-struct dt_info *dt_from_source(const char *f);
-
-/* FS trees */
-
-struct dt_info *dt_from_fs(const char *dirname);
-
-#endif /* _DTC_H */
diff --git a/contrib/dtc/dtdiff b/contrib/dtc/dtdiff
deleted file mode 100644
index 5fa772b0ab62..000000000000
--- a/contrib/dtc/dtdiff
+++ /dev/null
@@ -1,38 +0,0 @@
-#! /bin/bash
-
-# This script uses the bash <(...) extension.
-# If you want to change this to work with a generic /bin/sh, make sure
-# you fix that.
-
-
-DTC=dtc
-
-source_and_sort () {
-    DT="$1"
-    if [ -d "$DT" ]; then
-	IFORMAT=fs
-    elif [ -f "$DT" ]; then
-	case "$DT" in
-	    *.dts)
-		IFORMAT=dts
-		;;
-	    *.dtb)
-		IFORMAT=dtb
-		;;
-	esac
-    fi
-
-    if [ -z "$IFORMAT" ]; then
-	echo "Unrecognized format for $DT" >&2
-	exit 2
-    fi
-
-    $DTC -I $IFORMAT -O dts -qq -f -s -o - "$DT"
-}
-
-if [ $# != 2 ]; then
-    echo "Usage: dtdiff <device tree> <device tree>" >&2
-    exit 1
-fi
-
-diff -u <(source_and_sort "$1") <(source_and_sort "$2")
diff --git a/contrib/dtc/fdtdump.c b/contrib/dtc/fdtdump.c
deleted file mode 100644
index 194e9d62c6c5..000000000000
--- a/contrib/dtc/fdtdump.c
+++ /dev/null
@@ -1,240 +0,0 @@
-/*
- * fdtdump.c - Contributed by Pantelis Antoniou <pantelis.antoniou AT gmail.com>
- */
-
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-
-#include <libfdt.h>
-#include <libfdt_env.h>
-#include <fdt.h>
-
-#include "util.h"
-
-#define FDT_MAGIC_SIZE	4
-#define MAX_VERSION 17
-
-#define ALIGN(x, a)	(((x) + ((a) - 1)) & ~((a) - 1))
-#define PALIGN(p, a)	((void *)(ALIGN((unsigned long)(p), (a))))
-#define GET_CELL(p)	(p += 4, *((const uint32_t *)(p-4)))
-
-static const char *tagname(uint32_t tag)
-{
-	static const char * const names[] = {
-#define TN(t) [t] = #t
-		TN(FDT_BEGIN_NODE),
-		TN(FDT_END_NODE),
-		TN(FDT_PROP),
-		TN(FDT_NOP),
-		TN(FDT_END),
-#undef TN
-	};
-	if (tag < ARRAY_SIZE(names))
-		if (names[tag])
-			return names[tag];
-	return "FDT_???";
-}
-
-#define dumpf(fmt, args...) \
-	do { if (debug) printf("// " fmt, ## args); } while (0)
-
-static void dump_blob(void *blob, bool debug)
-{
-	uintptr_t blob_off = (uintptr_t)blob;
-	struct fdt_header *bph = blob;
-	uint32_t off_mem_rsvmap = fdt32_to_cpu(bph->off_mem_rsvmap);
-	uint32_t off_dt = fdt32_to_cpu(bph->off_dt_struct);
-	uint32_t off_str = fdt32_to_cpu(bph->off_dt_strings);
-	struct fdt_reserve_entry *p_rsvmap =
-		(struct fdt_reserve_entry *)((char *)blob + off_mem_rsvmap);
-	const char *p_struct = (const char *)blob + off_dt;
-	const char *p_strings = (const char *)blob + off_str;
-	uint32_t version = fdt32_to_cpu(bph->version);
-	uint32_t totalsize = fdt32_to_cpu(bph->totalsize);
-	uint32_t tag;
-	const char *p, *s, *t;
-	int depth, sz, shift;
-	int i;
-	uint64_t addr, size;
-
-	depth = 0;
-	shift = 4;
-
-	printf("/dts-v1/;\n");
-	printf("// magic:\t\t0x%x\n", fdt32_to_cpu(bph->magic));
-	printf("// totalsize:\t\t0x%x (%d)\n", totalsize, totalsize);
-	printf("// off_dt_struct:\t0x%x\n", off_dt);
-	printf("// off_dt_strings:\t0x%x\n", off_str);
-	printf("// off_mem_rsvmap:\t0x%x\n", off_mem_rsvmap);
-	printf("// version:\t\t%d\n", version);
-	printf("// last_comp_version:\t%d\n",
-	       fdt32_to_cpu(bph->last_comp_version));
-	if (version >= 2)
-		printf("// boot_cpuid_phys:\t0x%x\n",
-		       fdt32_to_cpu(bph->boot_cpuid_phys));
-
-	if (version >= 3)
-		printf("// size_dt_strings:\t0x%x\n",
-		       fdt32_to_cpu(bph->size_dt_strings));
-	if (version >= 17)
-		printf("// size_dt_struct:\t0x%x\n",
-		       fdt32_to_cpu(bph->size_dt_struct));
-	printf("\n");
-
-	for (i = 0; ; i++) {
-		addr = fdt64_to_cpu(p_rsvmap[i].address);
-		size = fdt64_to_cpu(p_rsvmap[i].size);
-		if (addr == 0 && size == 0)
-			break;
-
-		printf("/memreserve/ %#llx %#llx;\n",
-		       (unsigned long long)addr, (unsigned long long)size);
-	}
-
-	p = p_struct;
-	while ((tag = fdt32_to_cpu(GET_CELL(p))) != FDT_END) {
-
-		dumpf("%04zx: tag: 0x%08x (%s)\n",
-		        (uintptr_t)p - blob_off - 4, tag, tagname(tag));
-
-		if (tag == FDT_BEGIN_NODE) {
-			s = p;
-			p = PALIGN(p + strlen(s) + 1, 4);
-
-			if (*s == '\0')
-				s = "/";
-
-			printf("%*s%s {\n", depth * shift, "", s);
-
-			depth++;
-			continue;
-		}
-
-		if (tag == FDT_END_NODE) {
-			depth--;
-
-			printf("%*s};\n", depth * shift, "");
-			continue;
-		}
-
-		if (tag == FDT_NOP) {
-			printf("%*s// [NOP]\n", depth * shift, "");
-			continue;
-		}
-
-		if (tag != FDT_PROP) {
-			fprintf(stderr, "%*s ** Unknown tag 0x%08x\n", depth * shift, "", tag);
-			break;
-		}
-		sz = fdt32_to_cpu(GET_CELL(p));
-		s = p_strings + fdt32_to_cpu(GET_CELL(p));
-		if (version < 16 && sz >= 8)
-			p = PALIGN(p, 8);
-		t = p;
-
-		p = PALIGN(p + sz, 4);
-
-		dumpf("%04zx: string: %s\n", (uintptr_t)s - blob_off, s);
-		dumpf("%04zx: value\n", (uintptr_t)t - blob_off);
-		printf("%*s%s", depth * shift, "", s);
-		utilfdt_print_data(t, sz);
-		printf(";\n");
-	}
-}
-
-/* Usage related data. */
-static const char usage_synopsis[] = "fdtdump [options] <file>";
-static const char usage_short_opts[] = "ds" USAGE_COMMON_SHORT_OPTS;
-static struct option const usage_long_opts[] = {
-	{"debug",            no_argument, NULL, 'd'},
-	{"scan",             no_argument, NULL, 's'},
-	USAGE_COMMON_LONG_OPTS
-};
-static const char * const usage_opts_help[] = {
-	"Dump debug information while decoding the file",
-	"Scan for an embedded fdt in file",
-	USAGE_COMMON_OPTS_HELP
-};
-
-static bool valid_header(char *p, off_t len)
-{
-	if (len < sizeof(struct fdt_header) ||
-	    fdt_magic(p) != FDT_MAGIC ||
-	    fdt_version(p) > MAX_VERSION ||
-	    fdt_last_comp_version(p) >= MAX_VERSION ||
-	    fdt_totalsize(p) >= len ||
-	    fdt_off_dt_struct(p) >= len ||
-	    fdt_off_dt_strings(p) >= len)
-		return 0;
-	else
-		return 1;
-}
-
-int main(int argc, char *argv[])
-{
-	int opt;
-	const char *file;
-	char *buf;
-	bool debug = false;
-	bool scan = false;
-	off_t len;
-
-	while ((opt = util_getopt_long()) != EOF) {
-		switch (opt) {
-		case_USAGE_COMMON_FLAGS
-
-		case 'd':
-			debug = true;
-			break;
-		case 's':
-			scan = true;
-			break;
-		}
-	}
-	if (optind != argc - 1)
-		usage("missing input filename");
-	file = argv[optind];
-
-	buf = utilfdt_read_len(file, &len);
-	if (!buf)
-		die("could not read: %s\n", file);
-
-	/* try and locate an embedded fdt in a bigger blob */
-	if (scan) {
-		unsigned char smagic[FDT_MAGIC_SIZE];
-		char *p = buf;
-		char *endp = buf + len;
-
-		fdt_set_magic(smagic, FDT_MAGIC);
-
-		/* poor man's memmem */
-		while ((endp - p) >= FDT_MAGIC_SIZE) {
-			p = memchr(p, smagic[0], endp - p - FDT_MAGIC_SIZE);
-			if (!p)
-				break;
-			if (fdt_magic(p) == FDT_MAGIC) {
-				/* try and validate the main struct */
-				off_t this_len = endp - p;
-				if (valid_header(p, this_len))
-					break;
-				if (debug)
-					printf("%s: skipping fdt magic at offset %#zx\n",
-						file, p - buf);
-			}
-			++p;
-		}
-		if (!p || endp - p < sizeof(struct fdt_header))
-			die("%s: could not locate fdt magic\n", file);
-		printf("%s: found fdt at offset %#zx\n", file, p - buf);
-		buf = p;
-	} else if (!valid_header(buf, len))
-		die("%s: header is not valid\n", file);
-
-	dump_blob(buf, debug);
-
-	return 0;
-}
diff --git a/contrib/dtc/fdtget.c b/contrib/dtc/fdtget.c
deleted file mode 100644
index fb9d0e1730d7..000000000000
--- a/contrib/dtc/fdtget.c
+++ /dev/null
@@ -1,366 +0,0 @@
-/*
- * Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
- *
- * Portions from U-Boot cmd_fdt.c (C) Copyright 2007
- * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
- * Based on code written by:
- *   Pantelis Antoniou <pantelis.antoniou@gmail.com> and
- *   Matthew McClintock <msm@freescale.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <assert.h>
-#include <ctype.h>
-#include <getopt.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <libfdt.h>
-
-#include "util.h"
-
-enum display_mode {
-	MODE_SHOW_VALUE,	/* show values for node properties */
-	MODE_LIST_PROPS,	/* list the properties for a node */
-	MODE_LIST_SUBNODES,	/* list the subnodes of a node */
-};
-
-/* Holds information which controls our output and options */
-struct display_info {
-	int type;		/* data type (s/i/u/x or 0 for default) */
-	int size;		/* data size (1/2/4) */
-	enum display_mode mode;	/* display mode that we are using */
-	const char *default_val; /* default value if node/property not found */
-};
-
-static void report_error(const char *where, int err)
-{
-	fprintf(stderr, "Error at '%s': %s\n", where, fdt_strerror(err));
-}
-
-/**
- * Displays data of a given length according to selected options
- *
- * If a specific data type is provided in disp, then this is used. Otherwise
- * we try to guess the data type / size from the contents.
- *
- * @param disp		Display information / options
- * @param data		Data to display
- * @param len		Maximum length of buffer
- * @return 0 if ok, -1 if data does not match format
- */
-static int show_data(struct display_info *disp, const char *data, int len)
-{
-	int i, size;
-	const uint8_t *p = (const uint8_t *)data;
-	const char *s;
-	int value;
-	int is_string;
-	char fmt[3];
-
-	/* no data, don't print */
-	if (len == 0)
-		return 0;
-
-	is_string = (disp->type) == 's' ||
-		(!disp->type && util_is_printable_string(data, len));
-	if (is_string) {
-		if (data[len - 1] != '\0') {
-			fprintf(stderr, "Unterminated string\n");
-			return -1;
-		}
-		for (s = data; s - data < len; s += strlen(s) + 1) {
-			if (s != data)
-				printf(" ");
-			printf("%s", (const char *)s);
-		}
-		return 0;
-	}
-	size = disp->size;
-	if (size == -1) {
-		size = (len % 4) == 0 ? 4 : 1;
-	} else if (len % size) {
-		fprintf(stderr, "Property length must be a multiple of "
-				"selected data size\n");
-		return -1;
-	}
-	fmt[0] = '%';
-	fmt[1] = disp->type ? disp->type : 'd';
-	fmt[2] = '\0';
-	for (i = 0; i < len; i += size, p += size) {
-		if (i)
-			printf(" ");
-		value = size == 4 ? fdt32_to_cpu(*(const uint32_t *)p) :
-			size == 2 ? (*p << 8) | p[1] : *p;
-		printf(fmt, value);
-	}
-	return 0;
-}
-
-/**
- * List all properties in a node, one per line.
- *
- * @param blob		FDT blob
- * @param node		Node to display
- * @return 0 if ok, or FDT_ERR... if not.
- */
-static int list_properties(const void *blob, int node)
-{
-	const struct fdt_property *data;
-	const char *name;
-	int prop;
-
-	prop = fdt_first_property_offset(blob, node);
-	do {
-		/* Stop silently when there are no more properties */
-		if (prop < 0)
-			return prop == -FDT_ERR_NOTFOUND ? 0 : prop;
-		data = fdt_get_property_by_offset(blob, prop, NULL);
-		name = fdt_string(blob, fdt32_to_cpu(data->nameoff));
-		if (name)
-			puts(name);
-		prop = fdt_next_property_offset(blob, prop);
-	} while (1);
-}
-
-#define MAX_LEVEL	32		/* how deeply nested we will go */
-
-/**
- * List all subnodes in a node, one per line
- *
- * @param blob		FDT blob
- * @param node		Node to display
- * @return 0 if ok, or FDT_ERR... if not.
- */
-static int list_subnodes(const void *blob, int node)
-{
-	int nextoffset;		/* next node offset from libfdt */
-	uint32_t tag;		/* current tag */
-	int level = 0;		/* keep track of nesting level */
-	const char *pathp;
-	int depth = 1;		/* the assumed depth of this node */
-
-	while (level >= 0) {
-		tag = fdt_next_tag(blob, node, &nextoffset);
-		switch (tag) {
-		case FDT_BEGIN_NODE:
-			pathp = fdt_get_name(blob, node, NULL);
-			if (level <= depth) {
-				if (pathp == NULL)
-					pathp = "/* NULL pointer error */";
-				if (*pathp == '\0')
-					pathp = "/";	/* root is nameless */
-				if (level == 1)
-					puts(pathp);
-			}
-			level++;
-			if (level >= MAX_LEVEL) {
-				printf("Nested too deep, aborting.\n");
-				return 1;
-			}
-			break;
-		case FDT_END_NODE:
-			level--;
-			if (level == 0)
-				level = -1;		/* exit the loop */
-			break;
-		case FDT_END:
-			return 1;
-		case FDT_PROP:
-			break;
-		default:
-			if (level <= depth)
-				printf("Unknown tag 0x%08X\n", tag);
-			return 1;
-		}
-		node = nextoffset;
-	}
-	return 0;
-}
-
-/**
- * Show the data for a given node (and perhaps property) according to the
- * display option provided.
- *
- * @param blob		FDT blob
- * @param disp		Display information / options
- * @param node		Node to display
- * @param property	Name of property to display, or NULL if none
- * @return 0 if ok, -ve on error
- */
-static int show_data_for_item(const void *blob, struct display_info *disp,
-		int node, const char *property)
-{
-	const void *value = NULL;
-	int len, err = 0;
-
-	switch (disp->mode) {
-	case MODE_LIST_PROPS:
-		err = list_properties(blob, node);
-		break;
-
-	case MODE_LIST_SUBNODES:
-		err = list_subnodes(blob, node);
-		break;
-
-	default:
-		assert(property);
-		value = fdt_getprop(blob, node, property, &len);
-		if (value) {
-			if (show_data(disp, value, len))
-				err = -1;
-			else
-				printf("\n");
-		} else if (disp->default_val) {
-			puts(disp->default_val);
-		} else {
-			report_error(property, len);
-			err = -1;
-		}
-		break;
-	}
-
-	return err;
-}
-
-/**
- * Run the main fdtget operation, given a filename and valid arguments
- *
- * @param disp		Display information / options
- * @param filename	Filename of blob file
- * @param arg		List of arguments to process
- * @param arg_count	Number of arguments
- * @param return 0 if ok, -ve on error
- */
-static int do_fdtget(struct display_info *disp, const char *filename,
-		     char **arg, int arg_count, int args_per_step)
-{
-	char *blob;
-	const char *prop;
-	int i, node;
-
-	blob = utilfdt_read(filename);
-	if (!blob)
-		return -1;
-
-	for (i = 0; i + args_per_step <= arg_count; i += args_per_step) {
-		node = fdt_path_offset(blob, arg[i]);
-		if (node < 0) {
-			if (disp->default_val) {
-				puts(disp->default_val);
-				continue;
-			} else {
-				report_error(arg[i], node);
-				free(blob);
-				return -1;
-			}
-		}
-		prop = args_per_step == 1 ? NULL : arg[i + 1];
-
-		if (show_data_for_item(blob, disp, node, prop)) {
-			free(blob);
-			return -1;
-		}
-	}
-
-	free(blob);
-
-	return 0;
-}
-
-/* Usage related data. */
-static const char usage_synopsis[] =
-	"read values from device tree\n"
-	"	fdtget <options> <dt file> [<node> <property>]...\n"
-	"	fdtget -p <options> <dt file> [<node> ]...\n"
-	"\n"
-	"Each value is printed on a new line.\n"
-	USAGE_TYPE_MSG;
-static const char usage_short_opts[] = "t:pld:" USAGE_COMMON_SHORT_OPTS;
-static struct option const usage_long_opts[] = {
-	{"type",              a_argument, NULL, 't'},
-	{"properties",       no_argument, NULL, 'p'},
-	{"list",             no_argument, NULL, 'l'},
-	{"default",           a_argument, NULL, 'd'},
-	USAGE_COMMON_LONG_OPTS,
-};
-static const char * const usage_opts_help[] = {
-	"Type of data",
-	"List properties for each node",
-	"List subnodes for each node",
-	"Default value to display when the property is missing",
-	USAGE_COMMON_OPTS_HELP
-};
-
-int main(int argc, char *argv[])
-{
-	int opt;
-	char *filename = NULL;
-	struct display_info disp;
-	int args_per_step = 2;
-
-	/* set defaults */
-	memset(&disp, '\0', sizeof(disp));
-	disp.size = -1;
-	disp.mode = MODE_SHOW_VALUE;
-	while ((opt = util_getopt_long()) != EOF) {
-		switch (opt) {
-		case_USAGE_COMMON_FLAGS
-
-		case 't':
-			if (utilfdt_decode_type(optarg, &disp.type,
-					&disp.size))
-				usage("invalid type string");
-			break;
-
-		case 'p':
-			disp.mode = MODE_LIST_PROPS;
-			args_per_step = 1;
-			break;
-
-		case 'l':
-			disp.mode = MODE_LIST_SUBNODES;
-			args_per_step = 1;
-			break;
-
-		case 'd':
-			disp.default_val = optarg;
-			break;
-		}
-	}
-
-	if (optind < argc)
-		filename = argv[optind++];
-	if (!filename)
-		usage("missing filename");
-
-	argv += optind;
-	argc -= optind;
-
-	/* Allow no arguments, and silently succeed */
-	if (!argc)
-		return 0;
-
-	/* Check for node, property arguments */
-	if (args_per_step == 2 && (argc % 2))
-		usage("must have an even number of arguments");
-
-	if (do_fdtget(&disp, filename, argv, argc, args_per_step))
-		return 1;
-	return 0;
-}
diff --git a/contrib/dtc/fdtput.c b/contrib/dtc/fdtput.c
deleted file mode 100644
index db65e9613f29..000000000000
--- a/contrib/dtc/fdtput.c
+++ /dev/null
@@ -1,480 +0,0 @@
-/*
- * Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <assert.h>
-#include <ctype.h>
-#include <getopt.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <libfdt.h>
-
-#include "util.h"
-
-/* These are the operations we support */
-enum oper_type {
-	OPER_WRITE_PROP,		/* Write a property in a node */
-	OPER_CREATE_NODE,		/* Create a new node */
-	OPER_REMOVE_NODE,		/* Delete a node */
-	OPER_DELETE_PROP,		/* Delete a property in a node */
-};
-
-struct display_info {
-	enum oper_type oper;	/* operation to perform */
-	int type;		/* data type (s/i/u/x or 0 for default) */
-	int size;		/* data size (1/2/4) */
-	int verbose;		/* verbose output */
-	int auto_path;		/* automatically create all path components */
-};
-
-
-/**
- * Report an error with a particular node.
- *
- * @param name		Node name to report error on
- * @param namelen	Length of node name, or -1 to use entire string
- * @param err		Error number to report (-FDT_ERR_...)
- */
-static void report_error(const char *name, int namelen, int err)
-{
-	if (namelen == -1)
-		namelen = strlen(name);
-	fprintf(stderr, "Error at '%1.*s': %s\n", namelen, name,
-		fdt_strerror(err));
-}
-
-/**
- * Encode a series of arguments in a property value.
- *
- * @param disp		Display information / options
- * @param arg		List of arguments from command line
- * @param arg_count	Number of arguments (may be 0)
- * @param valuep	Returns buffer containing value
- * @param *value_len	Returns length of value encoded
- */
-static int encode_value(struct display_info *disp, char **arg, int arg_count,
-			char **valuep, int *value_len)
-{
-	char *value = NULL;	/* holding area for value */
-	int value_size = 0;	/* size of holding area */
-	char *ptr;		/* pointer to current value position */
-	int len;		/* length of this cell/string/byte */
-	int ival;
-	int upto;	/* the number of bytes we have written to buf */
-	char fmt[3];
-
-	upto = 0;
-
-	if (disp->verbose)
-		fprintf(stderr, "Decoding value:\n");
-
-	fmt[0] = '%';
-	fmt[1] = disp->type ? disp->type : 'd';
-	fmt[2] = '\0';
-	for (; arg_count > 0; arg++, arg_count--, upto += len) {
-		/* assume integer unless told otherwise */
-		if (disp->type == 's')
-			len = strlen(*arg) + 1;
-		else
-			len = disp->size == -1 ? 4 : disp->size;
-
-		/* enlarge our value buffer by a suitable margin if needed */
-		if (upto + len > value_size) {
-			value_size = (upto + len) + 500;
-			value = xrealloc(value, value_size);
-		}
-
-		ptr = value + upto;
-		if (disp->type == 's') {
-			memcpy(ptr, *arg, len);
-			if (disp->verbose)
-				fprintf(stderr, "\tstring: '%s'\n", ptr);
-		} else {
-			int *iptr = (int *)ptr;
-			sscanf(*arg, fmt, &ival);
-			if (len == 4)
-				*iptr = cpu_to_fdt32(ival);
-			else
-				*ptr = (uint8_t)ival;
-			if (disp->verbose) {
-				fprintf(stderr, "\t%s: %d\n",
-					disp->size == 1 ? "byte" :
-					disp->size == 2 ? "short" : "int",
-					ival);
-			}
-		}
-	}
-	*value_len = upto;
-	*valuep = value;
-	if (disp->verbose)
-		fprintf(stderr, "Value size %d\n", upto);
-	return 0;
-}
-
-#define ALIGN(x)		(((x) + (FDT_TAGSIZE) - 1) & ~((FDT_TAGSIZE) - 1))
-
-static char *_realloc_fdt(char *fdt, int delta)
-{
-	int new_sz = fdt_totalsize(fdt) + delta;
-	fdt = xrealloc(fdt, new_sz);
-	fdt_open_into(fdt, fdt, new_sz);
-	return fdt;
-}
-
-static char *realloc_node(char *fdt, const char *name)
-{
-	int delta;
-	/* FDT_BEGIN_NODE, node name in off_struct and FDT_END_NODE */
-	delta = sizeof(struct fdt_node_header) + ALIGN(strlen(name) + 1)
-			+ FDT_TAGSIZE;
-	return _realloc_fdt(fdt, delta);
-}
-
-static char *realloc_property(char *fdt, int nodeoffset,
-		const char *name, int newlen)
-{
-	int delta = 0;
-	int oldlen = 0;
-
-	if (!fdt_get_property(fdt, nodeoffset, name, &oldlen))
-		/* strings + property header */
-		delta = sizeof(struct fdt_property) + strlen(name) + 1;
-
-	if (newlen > oldlen)
-		/* actual value in off_struct */
-		delta += ALIGN(newlen) - ALIGN(oldlen);
-
-	return _realloc_fdt(fdt, delta);
-}
-
-static int store_key_value(char **blob, const char *node_name,
-		const char *property, const char *buf, int len)
-{
-	int node;
-	int err;
-
-	node = fdt_path_offset(*blob, node_name);
-	if (node < 0) {
-		report_error(node_name, -1, node);
-		return -1;
-	}
-
-	err = fdt_setprop(*blob, node, property, buf, len);
-	if (err == -FDT_ERR_NOSPACE) {
-		*blob = realloc_property(*blob, node, property, len);
-		err = fdt_setprop(*blob, node, property, buf, len);
-	}
-	if (err) {
-		report_error(property, -1, err);
-		return -1;
-	}
-	return 0;
-}
-
-/**
- * Create paths as needed for all components of a path
- *
- * Any components of the path that do not exist are created. Errors are
- * reported.
- *
- * @param blob		FDT blob to write into
- * @param in_path	Path to process
- * @return 0 if ok, -1 on error
- */
-static int create_paths(char **blob, const char *in_path)
-{
-	const char *path = in_path;
-	const char *sep;
-	int node, offset = 0;
-
-	/* skip leading '/' */
-	while (*path == '/')
-		path++;
-
-	for (sep = path; *sep; path = sep + 1, offset = node) {
-		/* equivalent to strchrnul(), but it requires _GNU_SOURCE */
-		sep = strchr(path, '/');
-		if (!sep)
-			sep = path + strlen(path);
-
-		node = fdt_subnode_offset_namelen(*blob, offset, path,
-				sep - path);
-		if (node == -FDT_ERR_NOTFOUND) {
-			*blob = realloc_node(*blob, path);
-			node = fdt_add_subnode_namelen(*blob, offset, path,
-						       sep - path);
-		}
-		if (node < 0) {
-			report_error(path, sep - path, node);
-			return -1;
-		}
-	}
-
-	return 0;
-}
-
-/**
- * Create a new node in the fdt.
- *
- * This will overwrite the node_name string. Any error is reported.
- *
- * TODO: Perhaps create fdt_path_offset_namelen() so we don't need to do this.
- *
- * @param blob		FDT blob to write into
- * @param node_name	Name of node to create
- * @return new node offset if found, or -1 on failure
- */
-static int create_node(char **blob, const char *node_name)
-{
-	int node = 0;
-	char *p;
-
-	p = strrchr(node_name, '/');
-	if (!p) {
-		report_error(node_name, -1, -FDT_ERR_BADPATH);
-		return -1;
-	}
-	*p = '\0';
-
-	*blob = realloc_node(*blob, p + 1);
-
-	if (p > node_name) {
-		node = fdt_path_offset(*blob, node_name);
-		if (node < 0) {
-			report_error(node_name, -1, node);
-			return -1;
-		}
-	}
-
-	node = fdt_add_subnode(*blob, node, p + 1);
-	if (node < 0) {
-		report_error(p + 1, -1, node);
-		return -1;
-	}
-
-	return 0;
-}
-
-/**
- * Delete a property of a node in the fdt.
- *
- * @param blob		FDT blob to write into
- * @param node_name	Path to node containing the property to delete
- * @param prop_name	Name of property to delete
- * @return 0 on success, or -1 on failure
- */
-static int delete_prop(char *blob, const char *node_name, const char *prop_name)
-{
-	int node = 0;
-
-	node = fdt_path_offset(blob, node_name);
-	if (node < 0) {
-		report_error(node_name, -1, node);
-		return -1;
-	}
-
-	node = fdt_delprop(blob, node, prop_name);
-	if (node < 0) {
-		report_error(node_name, -1, node);
-		return -1;
-	}
-
-	return 0;
-}
-
-/**
- * Delete a node in the fdt.
- *
- * @param blob		FDT blob to write into
- * @param node_name	Name of node to delete
- * @return 0 on success, or -1 on failure
- */
-static int delete_node(char *blob, const char *node_name)
-{
-	int node = 0;
-
-	node = fdt_path_offset(blob, node_name);
-	if (node < 0) {
-		report_error(node_name, -1, node);
-		return -1;
-	}
-
-	node = fdt_del_node(blob, node);
-	if (node < 0) {
-		report_error(node_name, -1, node);
-		return -1;
-	}
-
-	return 0;
-}
-
-static int do_fdtput(struct display_info *disp, const char *filename,
-		    char **arg, int arg_count)
-{
-	char *value = NULL;
-	char *blob;
-	char *node;
-	int len, ret = 0;
-
-	blob = utilfdt_read(filename);
-	if (!blob)
-		return -1;
-
-	switch (disp->oper) {
-	case OPER_WRITE_PROP:
-		/*
-		 * Convert the arguments into a single binary value, then
-		 * store them into the property.
-		 */
-		assert(arg_count >= 2);
-		if (disp->auto_path && create_paths(&blob, *arg))
-			return -1;
-		if (encode_value(disp, arg + 2, arg_count - 2, &value, &len) ||
-			store_key_value(&blob, *arg, arg[1], value, len))
-			ret = -1;
-		break;
-	case OPER_CREATE_NODE:
-		for (; ret >= 0 && arg_count--; arg++) {
-			if (disp->auto_path)
-				ret = create_paths(&blob, *arg);
-			else
-				ret = create_node(&blob, *arg);
-		}
-		break;
-	case OPER_REMOVE_NODE:
-		for (; ret >= 0 && arg_count--; arg++)
-			ret = delete_node(blob, *arg);
-		break;
-	case OPER_DELETE_PROP:
-		node = *arg;
-		for (arg++; ret >= 0 && arg_count-- > 1; arg++)
-			ret = delete_prop(blob, node, *arg);
-		break;
-	}
-	if (ret >= 0) {
-		fdt_pack(blob);
-		ret = utilfdt_write(filename, blob);
-	}
-
-	free(blob);
-
-	if (value) {
-		free(value);
-	}
-
-	return ret;
-}
-
-/* Usage related data. */
-static const char usage_synopsis[] =
-	"write a property value to a device tree\n"
-	"	fdtput <options> <dt file> <node> <property> [<value>...]\n"
-	"	fdtput -c <options> <dt file> [<node>...]\n"
-	"	fdtput -r <options> <dt file> [<node>...]\n"
-	"	fdtput -d <options> <dt file> <node> [<property>...]\n"
-	"\n"
-	"The command line arguments are joined together into a single value.\n"
-	USAGE_TYPE_MSG;
-static const char usage_short_opts[] = "crdpt:v" USAGE_COMMON_SHORT_OPTS;
-static struct option const usage_long_opts[] = {
-	{"create",           no_argument, NULL, 'c'},
-	{"remove",	     no_argument, NULL, 'r'},
-	{"delete",	     no_argument, NULL, 'd'},
-	{"auto-path",        no_argument, NULL, 'p'},
-	{"type",              a_argument, NULL, 't'},
-	{"verbose",          no_argument, NULL, 'v'},
-	USAGE_COMMON_LONG_OPTS,
-};
-static const char * const usage_opts_help[] = {
-	"Create nodes if they don't already exist",
-	"Delete nodes (and any subnodes) if they already exist",
-	"Delete properties if they already exist",
-	"Automatically create nodes as needed for the node path",
-	"Type of data",
-	"Display each value decoded from command line",
-	USAGE_COMMON_OPTS_HELP
-};
-
-int main(int argc, char *argv[])
-{
-	int opt;
-	struct display_info disp;
-	char *filename = NULL;
-
-	memset(&disp, '\0', sizeof(disp));
-	disp.size = -1;
-	disp.oper = OPER_WRITE_PROP;
-	while ((opt = util_getopt_long()) != EOF) {
-		/*
-		 * TODO: add options to:
-		 * - rename node
-		 * - pack fdt before writing
-		 * - set amount of free space when writing
-		 */
-		switch (opt) {
-		case_USAGE_COMMON_FLAGS
-
-		case 'c':
-			disp.oper = OPER_CREATE_NODE;
-			break;
-		case 'r':
-			disp.oper = OPER_REMOVE_NODE;
-			break;
-		case 'd':
-			disp.oper = OPER_DELETE_PROP;
-			break;
-		case 'p':
-			disp.auto_path = 1;
-			break;
-		case 't':
-			if (utilfdt_decode_type(optarg, &disp.type,
-					&disp.size))
-				usage("Invalid type string");
-			break;
-
-		case 'v':
-			disp.verbose = 1;
-			break;
-		}
-	}
-
-	if (optind < argc)
-		filename = argv[optind++];
-	if (!filename)
-		usage("missing filename");
-
-	argv += optind;
-	argc -= optind;
-
-	if (disp.oper == OPER_WRITE_PROP) {
-		if (argc < 1)
-			usage("missing node");
-		if (argc < 2)
-			usage("missing property");
-	}
-
-	if (disp.oper == OPER_DELETE_PROP)
-		if (argc < 1)
-			usage("missing node");
-
-	if (do_fdtput(&disp, filename, argv, argc))
-		return 1;
-	return 0;
-}
diff --git a/contrib/dtc/flattree.c b/contrib/dtc/flattree.c
deleted file mode 100644
index ebac548b3fa8..000000000000
--- a/contrib/dtc/flattree.c
+++ /dev/null
@@ -1,946 +0,0 @@
-/*
- * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2005.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
- *                                                                   USA
- */
-
-#include "dtc.h"
-#include "srcpos.h"
-
-#define FTF_FULLPATH	0x1
-#define FTF_VARALIGN	0x2
-#define FTF_NAMEPROPS	0x4
-#define FTF_BOOTCPUID	0x8
-#define FTF_STRTABSIZE	0x10
-#define FTF_STRUCTSIZE	0x20
-#define FTF_NOPS	0x40
-
-static struct version_info {
-	int version;
-	int last_comp_version;
-	int hdr_size;
-	int flags;
-} version_table[] = {
-	{1, 1, FDT_V1_SIZE,
-	 FTF_FULLPATH|FTF_VARALIGN|FTF_NAMEPROPS},
-	{2, 1, FDT_V2_SIZE,
-	 FTF_FULLPATH|FTF_VARALIGN|FTF_NAMEPROPS|FTF_BOOTCPUID},
-	{3, 1, FDT_V3_SIZE,
-	 FTF_FULLPATH|FTF_VARALIGN|FTF_NAMEPROPS|FTF_BOOTCPUID|FTF_STRTABSIZE},
-	{16, 16, FDT_V3_SIZE,
-	 FTF_BOOTCPUID|FTF_STRTABSIZE|FTF_NOPS},
-	{17, 16, FDT_V17_SIZE,
-	 FTF_BOOTCPUID|FTF_STRTABSIZE|FTF_STRUCTSIZE|FTF_NOPS},
-};
-
-struct emitter {
-	void (*cell)(void *, cell_t);
-	void (*string)(void *, char *, int);
-	void (*align)(void *, int);
-	void (*data)(void *, struct data);
-	void (*beginnode)(void *, struct label *labels);
-	void (*endnode)(void *, struct label *labels);
-	void (*property)(void *, struct label *labels);
-};
-
-static void bin_emit_cell(void *e, cell_t val)
-{
-	struct data *dtbuf = e;
-
-	*dtbuf = data_append_cell(*dtbuf, val);
-}
-
-static void bin_emit_string(void *e, char *str, int len)
-{
-	struct data *dtbuf = e;
-
-	if (len == 0)
-		len = strlen(str);
-
-	*dtbuf = data_append_data(*dtbuf, str, len);
-	*dtbuf = data_append_byte(*dtbuf, '\0');
-}
-
-static void bin_emit_align(void *e, int a)
-{
-	struct data *dtbuf = e;
-
-	*dtbuf = data_append_align(*dtbuf, a);
-}
-
-static void bin_emit_data(void *e, struct data d)
-{
-	struct data *dtbuf = e;
-
-	*dtbuf = data_append_data(*dtbuf, d.val, d.len);
-}
-
-static void bin_emit_beginnode(void *e, struct label *labels)
-{
-	bin_emit_cell(e, FDT_BEGIN_NODE);
-}
-
-static void bin_emit_endnode(void *e, struct label *labels)
-{
-	bin_emit_cell(e, FDT_END_NODE);
-}
-
-static void bin_emit_property(void *e, struct label *labels)
-{
-	bin_emit_cell(e, FDT_PROP);
-}
-
-static struct emitter bin_emitter = {
-	.cell = bin_emit_cell,
-	.string = bin_emit_string,
-	.align = bin_emit_align,
-	.data = bin_emit_data,
-	.beginnode = bin_emit_beginnode,
-	.endnode = bin_emit_endnode,
-	.property = bin_emit_property,
-};
-
-static void emit_label(FILE *f, const char *prefix, const char *label)
-{
-	fprintf(f, "\t.globl\t%s_%s\n", prefix, label);
-	fprintf(f, "%s_%s:\n", prefix, label);
-	fprintf(f, "_%s_%s:\n", prefix, label);
-}
-
-static void emit_offset_label(FILE *f, const char *label, int offset)
-{
-	fprintf(f, "\t.globl\t%s\n", label);
-	fprintf(f, "%s\t= . + %d\n", label, offset);
-}
-
-#define ASM_EMIT_BELONG(f, fmt, ...) \
-	{ \
-		fprintf((f), "\t.byte\t((" fmt ") >> 24) & 0xff\n", __VA_ARGS__); \
-		fprintf((f), "\t.byte\t((" fmt ") >> 16) & 0xff\n", __VA_ARGS__); \
-		fprintf((f), "\t.byte\t((" fmt ") >> 8) & 0xff\n", __VA_ARGS__); \
-		fprintf((f), "\t.byte\t(" fmt ") & 0xff\n", __VA_ARGS__); \
-	}
-
-static void asm_emit_cell(void *e, cell_t val)
-{
-	FILE *f = e;
-
-	fprintf(f, "\t.byte 0x%02x; .byte 0x%02x; .byte 0x%02x; .byte 0x%02x\n",
-		(val >> 24) & 0xff, (val >> 16) & 0xff,
-		(val >> 8) & 0xff, val & 0xff);
-}
-
-static void asm_emit_string(void *e, char *str, int len)
-{
-	FILE *f = e;
-	char c = 0;
-
-	if (len != 0) {
-		/* XXX: ewww */
-		c = str[len];
-		str[len] = '\0';
-	}
-
-	fprintf(f, "\t.string\t\"%s\"\n", str);
-
-	if (len != 0) {
-		str[len] = c;
-	}
-}
-
-static void asm_emit_align(void *e, int a)
-{
-	FILE *f = e;
-
-	fprintf(f, "\t.balign\t%d, 0\n", a);
-}
-
-static void asm_emit_data(void *e, struct data d)
-{
-	FILE *f = e;
-	int off = 0;
-	struct marker *m = d.markers;
-
-	for_each_marker_of_type(m, LABEL)
-		emit_offset_label(f, m->ref, m->offset);
-
-	while ((d.len - off) >= sizeof(uint32_t)) {
-		asm_emit_cell(e, fdt32_to_cpu(*((uint32_t *)(d.val+off))));
-		off += sizeof(uint32_t);
-	}
-
-	while ((d.len - off) >= 1) {
-		fprintf(f, "\t.byte\t0x%hhx\n", d.val[off]);
-		off += 1;
-	}
-
-	assert(off == d.len);
-}
-
-static void asm_emit_beginnode(void *e, struct label *labels)
-{
-	FILE *f = e;
-	struct label *l;
-
-	for_each_label(labels, l) {
-		fprintf(f, "\t.globl\t%s\n", l->label);
-		fprintf(f, "%s:\n", l->label);
-	}
-	fprintf(f, "\t/* FDT_BEGIN_NODE */\n");
-	asm_emit_cell(e, FDT_BEGIN_NODE);
-}
-
-static void asm_emit_endnode(void *e, struct label *labels)
-{
-	FILE *f = e;
-	struct label *l;
-
-	fprintf(f, "\t/* FDT_END_NODE */\n");
-	asm_emit_cell(e, FDT_END_NODE);
-	for_each_label(labels, l) {
-		fprintf(f, "\t.globl\t%s_end\n", l->label);
-		fprintf(f, "%s_end:\n", l->label);
-	}
-}
-
-static void asm_emit_property(void *e, struct label *labels)
-{
-	FILE *f = e;
-	struct label *l;
-
-	for_each_label(labels, l) {
-		fprintf(f, "\t.globl\t%s\n", l->label);
-		fprintf(f, "%s:\n", l->label);
-	}
-	fprintf(f, "\t/* FDT_PROP */\n");
-	asm_emit_cell(e, FDT_PROP);
-}
-
-static struct emitter asm_emitter = {
-	.cell = asm_emit_cell,
-	.string = asm_emit_string,
-	.align = asm_emit_align,
-	.data = asm_emit_data,
-	.beginnode = asm_emit_beginnode,
-	.endnode = asm_emit_endnode,
-	.property = asm_emit_property,
-};
-
-static int stringtable_insert(struct data *d, const char *str)
-{
-	int i;
-
-	/* FIXME: do this more efficiently? */
-
-	for (i = 0; i < d->len; i++) {
-		if (streq(str, d->val + i))
-			return i;
-	}
-
-	*d = data_append_data(*d, str, strlen(str)+1);
-	return i;
-}
-
-static void flatten_tree(struct node *tree, struct emitter *emit,
-			 void *etarget, struct data *strbuf,
-			 struct version_info *vi)
-{
-	struct property *prop;
-	struct node *child;
-	bool seen_name_prop = false;
-
-	if (tree->deleted)
-		return;
-
-	emit->beginnode(etarget, tree->labels);
-
-	if (vi->flags & FTF_FULLPATH)
-		emit->string(etarget, tree->fullpath, 0);
-	else
-		emit->string(etarget, tree->name, 0);
-
-	emit->align(etarget, sizeof(cell_t));
-
-	for_each_property(tree, prop) {
-		int nameoff;
-
-		if (streq(prop->name, "name"))
-			seen_name_prop = true;
-
-		nameoff = stringtable_insert(strbuf, prop->name);
-
-		emit->property(etarget, prop->labels);
-		emit->cell(etarget, prop->val.len);
-		emit->cell(etarget, nameoff);
-
-		if ((vi->flags & FTF_VARALIGN) && (prop->val.len >= 8))
-			emit->align(etarget, 8);
-
-		emit->data(etarget, prop->val);
-		emit->align(etarget, sizeof(cell_t));
-	}
-
-	if ((vi->flags & FTF_NAMEPROPS) && !seen_name_prop) {
-		emit->property(etarget, NULL);
-		emit->cell(etarget, tree->basenamelen+1);
-		emit->cell(etarget, stringtable_insert(strbuf, "name"));
-
-		if ((vi->flags & FTF_VARALIGN) && ((tree->basenamelen+1) >= 8))
-			emit->align(etarget, 8);
-
-		emit->string(etarget, tree->name, tree->basenamelen);
-		emit->align(etarget, sizeof(cell_t));
-	}
-
-	for_each_child(tree, child) {
-		flatten_tree(child, emit, etarget, strbuf, vi);
-	}
-
-	emit->endnode(etarget, tree->labels);
-}
-
-static struct data flatten_reserve_list(struct reserve_info *reservelist,
-				 struct version_info *vi)
-{
-	struct reserve_info *re;
-	struct data d = empty_data;
-	static struct fdt_reserve_entry null_re = {0,0};
-	int    j;
-
-	for (re = reservelist; re; re = re->next) {
-		d = data_append_re(d, &re->re);
-	}
-	/*
-	 * Add additional reserved slots if the user asked for them.
-	 */
-	for (j = 0; j < reservenum; j++) {
-		d = data_append_re(d, &null_re);
-	}
-
-	return d;
-}
-
-static void make_fdt_header(struct fdt_header *fdt,
-			    struct version_info *vi,
-			    int reservesize, int dtsize, int strsize,
-			    int boot_cpuid_phys)
-{
-	int reserve_off;
-
-	reservesize += sizeof(struct fdt_reserve_entry);
-
-	memset(fdt, 0xff, sizeof(*fdt));
-
-	fdt->magic = cpu_to_fdt32(FDT_MAGIC);
-	fdt->version = cpu_to_fdt32(vi->version);
-	fdt->last_comp_version = cpu_to_fdt32(vi->last_comp_version);
-
-	/* Reserve map should be doubleword aligned */
-	reserve_off = ALIGN(vi->hdr_size, 8);
-
-	fdt->off_mem_rsvmap = cpu_to_fdt32(reserve_off);
-	fdt->off_dt_struct = cpu_to_fdt32(reserve_off + reservesize);
-	fdt->off_dt_strings = cpu_to_fdt32(reserve_off + reservesize
-					  + dtsize);
-	fdt->totalsize = cpu_to_fdt32(reserve_off + reservesize + dtsize + strsize);
-
-	if (vi->flags & FTF_BOOTCPUID)
-		fdt->boot_cpuid_phys = cpu_to_fdt32(boot_cpuid_phys);
-	if (vi->flags & FTF_STRTABSIZE)
-		fdt->size_dt_strings = cpu_to_fdt32(strsize);
-	if (vi->flags & FTF_STRUCTSIZE)
-		fdt->size_dt_struct = cpu_to_fdt32(dtsize);
-}
-
-void dt_to_blob(FILE *f, struct dt_info *dti, int version)
-{
-	struct version_info *vi = NULL;
-	int i;
-	struct data blob       = empty_data;
-	struct data reservebuf = empty_data;
-	struct data dtbuf      = empty_data;
-	struct data strbuf     = empty_data;
-	struct fdt_header fdt;
-	int padlen = 0;
-
-	for (i = 0; i < ARRAY_SIZE(version_table); i++) {
-		if (version_table[i].version == version)
-			vi = &version_table[i];
-	}
-	if (!vi)
-		die("Unknown device tree blob version %d\n", version);
-
-	flatten_tree(dti->dt, &bin_emitter, &dtbuf, &strbuf, vi);
-	bin_emit_cell(&dtbuf, FDT_END);
-
-	reservebuf = flatten_reserve_list(dti->reservelist, vi);
-
-	/* Make header */
-	make_fdt_header(&fdt, vi, reservebuf.len, dtbuf.len, strbuf.len,
-			dti->boot_cpuid_phys);
-
-	/*
-	 * If the user asked for more space than is used, adjust the totalsize.
-	 */
-	if (minsize > 0) {
-		padlen = minsize - fdt32_to_cpu(fdt.totalsize);
-		if (padlen < 0) {
-			padlen = 0;
-			if (quiet < 1)
-				fprintf(stderr,
-					"Warning: blob size %d >= minimum size %d\n",
-					fdt32_to_cpu(fdt.totalsize), minsize);
-		}
-	}
-
-	if (padsize > 0)
-		padlen = padsize;
-
-	if (alignsize > 0)
-		padlen = ALIGN(fdt32_to_cpu(fdt.totalsize) + padlen, alignsize)
-			- fdt32_to_cpu(fdt.totalsize);
-
-	if (padlen > 0) {
-		int tsize = fdt32_to_cpu(fdt.totalsize);
-		tsize += padlen;
-		fdt.totalsize = cpu_to_fdt32(tsize);
-	}
-
-	/*
-	 * Assemble the blob: start with the header, add with alignment
-	 * the reserve buffer, add the reserve map terminating zeroes,
-	 * the device tree itself, and finally the strings.
-	 */
-	blob = data_append_data(blob, &fdt, vi->hdr_size);
-	blob = data_append_align(blob, 8);
-	blob = data_merge(blob, reservebuf);
-	blob = data_append_zeroes(blob, sizeof(struct fdt_reserve_entry));
-	blob = data_merge(blob, dtbuf);
-	blob = data_merge(blob, strbuf);
-
-	/*
-	 * If the user asked for more space than is used, pad out the blob.
-	 */
-	if (padlen > 0)
-		blob = data_append_zeroes(blob, padlen);
-
-	if (fwrite(blob.val, blob.len, 1, f) != 1) {
-		if (ferror(f))
-			die("Error writing device tree blob: %s\n",
-			    strerror(errno));
-		else
-			die("Short write on device tree blob\n");
-	}
-
-	/*
-	 * data_merge() frees the right-hand element so only the blob
-	 * remains to be freed.
-	 */
-	data_free(blob);
-}
-
-static void dump_stringtable_asm(FILE *f, struct data strbuf)
-{
-	const char *p;
-	int len;
-
-	p = strbuf.val;
-
-	while (p < (strbuf.val + strbuf.len)) {
-		len = strlen(p);
-		fprintf(f, "\t.string \"%s\"\n", p);
-		p += len+1;
-	}
-}
-
-void dt_to_asm(FILE *f, struct dt_info *dti, int version)
-{
-	struct version_info *vi = NULL;
-	int i;
-	struct data strbuf = empty_data;
-	struct reserve_info *re;
-	const char *symprefix = "dt";
-
-	for (i = 0; i < ARRAY_SIZE(version_table); i++) {
-		if (version_table[i].version == version)
-			vi = &version_table[i];
-	}
-	if (!vi)
-		die("Unknown device tree blob version %d\n", version);
-
-	fprintf(f, "/* autogenerated by dtc, do not edit */\n\n");
-
-	emit_label(f, symprefix, "blob_start");
-	emit_label(f, symprefix, "header");
-	fprintf(f, "\t/* magic */\n");
-	asm_emit_cell(f, FDT_MAGIC);
-	fprintf(f, "\t/* totalsize */\n");
-	ASM_EMIT_BELONG(f, "_%s_blob_abs_end - _%s_blob_start",
-			symprefix, symprefix);
-	fprintf(f, "\t/* off_dt_struct */\n");
-	ASM_EMIT_BELONG(f, "_%s_struct_start - _%s_blob_start",
-		symprefix, symprefix);
-	fprintf(f, "\t/* off_dt_strings */\n");
-	ASM_EMIT_BELONG(f, "_%s_strings_start - _%s_blob_start",
-		symprefix, symprefix);
-	fprintf(f, "\t/* off_mem_rsvmap */\n");
-	ASM_EMIT_BELONG(f, "_%s_reserve_map - _%s_blob_start",
-		symprefix, symprefix);
-	fprintf(f, "\t/* version */\n");
-	asm_emit_cell(f, vi->version);
-	fprintf(f, "\t/* last_comp_version */\n");
-	asm_emit_cell(f, vi->last_comp_version);
-
-	if (vi->flags & FTF_BOOTCPUID) {
-		fprintf(f, "\t/* boot_cpuid_phys */\n");
-		asm_emit_cell(f, dti->boot_cpuid_phys);
-	}
-
-	if (vi->flags & FTF_STRTABSIZE) {
-		fprintf(f, "\t/* size_dt_strings */\n");
-		ASM_EMIT_BELONG(f, "_%s_strings_end - _%s_strings_start",
-				symprefix, symprefix);
-	}
-
-	if (vi->flags & FTF_STRUCTSIZE) {
-		fprintf(f, "\t/* size_dt_struct */\n");
-		ASM_EMIT_BELONG(f, "_%s_struct_end - _%s_struct_start",
-			symprefix, symprefix);
-	}
-
-	/*
-	 * Reserve map entries.
-	 * Align the reserve map to a doubleword boundary.
-	 * Each entry is an (address, size) pair of u64 values.
-	 * Always supply a zero-sized temination entry.
-	 */
-	asm_emit_align(f, 8);
-	emit_label(f, symprefix, "reserve_map");
-
-	fprintf(f, "/* Memory reserve map from source file */\n");
-
-	/*
-	 * Use .long on high and low halfs of u64s to avoid .quad
-	 * as it appears .quad isn't available in some assemblers.
-	 */
-	for (re = dti->reservelist; re; re = re->next) {
-		struct label *l;
-
-		for_each_label(re->labels, l) {
-			fprintf(f, "\t.globl\t%s\n", l->label);
-			fprintf(f, "%s:\n", l->label);
-		}
-		ASM_EMIT_BELONG(f, "0x%08x", (unsigned int)(re->re.address >> 32));
-		ASM_EMIT_BELONG(f, "0x%08x",
-				(unsigned int)(re->re.address & 0xffffffff));
-		ASM_EMIT_BELONG(f, "0x%08x", (unsigned int)(re->re.size >> 32));
-		ASM_EMIT_BELONG(f, "0x%08x", (unsigned int)(re->re.size & 0xffffffff));
-	}
-	for (i = 0; i < reservenum; i++) {
-		fprintf(f, "\t.long\t0, 0\n\t.long\t0, 0\n");
-	}
-
-	fprintf(f, "\t.long\t0, 0\n\t.long\t0, 0\n");
-
-	emit_label(f, symprefix, "struct_start");
-	flatten_tree(dti->dt, &asm_emitter, f, &strbuf, vi);
-
-	fprintf(f, "\t/* FDT_END */\n");
-	asm_emit_cell(f, FDT_END);
-	emit_label(f, symprefix, "struct_end");
-
-	emit_label(f, symprefix, "strings_start");
-	dump_stringtable_asm(f, strbuf);
-	emit_label(f, symprefix, "strings_end");
-
-	emit_label(f, symprefix, "blob_end");
-
-	/*
-	 * If the user asked for more space than is used, pad it out.
-	 */
-	if (minsize > 0) {
-		fprintf(f, "\t.space\t%d - (_%s_blob_end - _%s_blob_start), 0\n",
-			minsize, symprefix, symprefix);
-	}
-	if (padsize > 0) {
-		fprintf(f, "\t.space\t%d, 0\n", padsize);
-	}
-	if (alignsize > 0)
-		asm_emit_align(f, alignsize);
-	emit_label(f, symprefix, "blob_abs_end");
-
-	data_free(strbuf);
-}
-
-struct inbuf {
-	char *base, *limit, *ptr;
-};
-
-static void inbuf_init(struct inbuf *inb, void *base, void *limit)
-{
-	inb->base = base;
-	inb->limit = limit;
-	inb->ptr = inb->base;
-}
-
-static void flat_read_chunk(struct inbuf *inb, void *p, int len)
-{
-	if ((inb->ptr + len) > inb->limit)
-		die("Premature end of data parsing flat device tree\n");
-
-	memcpy(p, inb->ptr, len);
-
-	inb->ptr += len;
-}
-
-static uint32_t flat_read_word(struct inbuf *inb)
-{
-	uint32_t val;
-
-	assert(((inb->ptr - inb->base) % sizeof(val)) == 0);
-
-	flat_read_chunk(inb, &val, sizeof(val));
-
-	return fdt32_to_cpu(val);
-}
-
-static void flat_realign(struct inbuf *inb, int align)
-{
-	int off = inb->ptr - inb->base;
-
-	inb->ptr = inb->base + ALIGN(off, align);
-	if (inb->ptr > inb->limit)
-		die("Premature end of data parsing flat device tree\n");
-}
-
-static char *flat_read_string(struct inbuf *inb)
-{
-	int len = 0;
-	const char *p = inb->ptr;
-	char *str;
-
-	do {
-		if (p >= inb->limit)
-			die("Premature end of data parsing flat device tree\n");
-		len++;
-	} while ((*p++) != '\0');
-
-	str = xstrdup(inb->ptr);
-
-	inb->ptr += len;
-
-	flat_realign(inb, sizeof(uint32_t));
-
-	return str;
-}
-
-static struct data flat_read_data(struct inbuf *inb, int len)
-{
-	struct data d = empty_data;
-
-	if (len == 0)
-		return empty_data;
-
-	d = data_grow_for(d, len);
-	d.len = len;
-
-	flat_read_chunk(inb, d.val, len);
-
-	flat_realign(inb, sizeof(uint32_t));
-
-	return d;
-}
-
-static char *flat_read_stringtable(struct inbuf *inb, int offset)
-{
-	const char *p;
-
-	p = inb->base + offset;
-	while (1) {
-		if (p >= inb->limit || p < inb->base)
-			die("String offset %d overruns string table\n",
-			    offset);
-
-		if (*p == '\0')
-			break;
-
-		p++;
-	}
-
-	return xstrdup(inb->base + offset);
-}
-
-static struct property *flat_read_property(struct inbuf *dtbuf,
-					   struct inbuf *strbuf, int flags)
-{
-	uint32_t proplen, stroff;
-	char *name;
-	struct data val;
-
-	proplen = flat_read_word(dtbuf);
-	stroff = flat_read_word(dtbuf);
-
-	name = flat_read_stringtable(strbuf, stroff);
-
-	if ((flags & FTF_VARALIGN) && (proplen >= 8))
-		flat_realign(dtbuf, 8);
-
-	val = flat_read_data(dtbuf, proplen);
-
-	return build_property(name, val);
-}
-
-
-static struct reserve_info *flat_read_mem_reserve(struct inbuf *inb)
-{
-	struct reserve_info *reservelist = NULL;
-	struct reserve_info *new;
-	struct fdt_reserve_entry re;
-
-	/*
-	 * Each entry is a pair of u64 (addr, size) values for 4 cell_t's.
-	 * List terminates at an entry with size equal to zero.
-	 *
-	 * First pass, count entries.
-	 */
-	while (1) {
-		flat_read_chunk(inb, &re, sizeof(re));
-		re.address  = fdt64_to_cpu(re.address);
-		re.size = fdt64_to_cpu(re.size);
-		if (re.size == 0)
-			break;
-
-		new = build_reserve_entry(re.address, re.size);
-		reservelist = add_reserve_entry(reservelist, new);
-	}
-
-	return reservelist;
-}
-
-
-static char *nodename_from_path(const char *ppath, const char *cpath)
-{
-	int plen;
-
-	plen = strlen(ppath);
-
-	if (!strneq(ppath, cpath, plen))
-		die("Path \"%s\" is not valid as a child of \"%s\"\n",
-		    cpath, ppath);
-
-	/* root node is a special case */
-	if (!streq(ppath, "/"))
-		plen++;
-
-	return xstrdup(cpath + plen);
-}
-
-static struct node *unflatten_tree(struct inbuf *dtbuf,
-				   struct inbuf *strbuf,
-				   const char *parent_flatname, int flags)
-{
-	struct node *node;
-	char *flatname;
-	uint32_t val;
-
-	node = build_node(NULL, NULL);
-
-	flatname = flat_read_string(dtbuf);
-
-	if (flags & FTF_FULLPATH)
-		node->name = nodename_from_path(parent_flatname, flatname);
-	else
-		node->name = flatname;
-
-	do {
-		struct property *prop;
-		struct node *child;
-
-		val = flat_read_word(dtbuf);
-		switch (val) {
-		case FDT_PROP:
-			if (node->children)
-				fprintf(stderr, "Warning: Flat tree input has "
-					"subnodes preceding a property.\n");
-			prop = flat_read_property(dtbuf, strbuf, flags);
-			add_property(node, prop);
-			break;
-
-		case FDT_BEGIN_NODE:
-			child = unflatten_tree(dtbuf,strbuf, flatname, flags);
-			add_child(node, child);
-			break;
-
-		case FDT_END_NODE:
-			break;
-
-		case FDT_END:
-			die("Premature FDT_END in device tree blob\n");
-			break;
-
-		case FDT_NOP:
-			if (!(flags & FTF_NOPS))
-				fprintf(stderr, "Warning: NOP tag found in flat tree"
-					" version <16\n");
-
-			/* Ignore */
-			break;
-
-		default:
-			die("Invalid opcode word %08x in device tree blob\n",
-			    val);
-		}
-	} while (val != FDT_END_NODE);
-
-	if (node->name != flatname) {
-		free(flatname);
-	}
-
-	return node;
-}
-
-
-struct dt_info *dt_from_blob(const char *fname)
-{
-	FILE *f;
-	uint32_t magic, totalsize, version, size_dt, boot_cpuid_phys;
-	uint32_t off_dt, off_str, off_mem_rsvmap;
-	int rc;
-	char *blob;
-	struct fdt_header *fdt;
-	char *p;
-	struct inbuf dtbuf, strbuf;
-	struct inbuf memresvbuf;
-	int sizeleft;
-	struct reserve_info *reservelist;
-	struct node *tree;
-	uint32_t val;
-	int flags = 0;
-
-	f = srcfile_relative_open(fname, NULL);
-
-	rc = fread(&magic, sizeof(magic), 1, f);
-	if (ferror(f))
-		die("Error reading DT blob magic number: %s\n",
-		    strerror(errno));
-	if (rc < 1) {
-		if (feof(f))
-			die("EOF reading DT blob magic number\n");
-		else
-			die("Mysterious short read reading magic number\n");
-	}
-
-	magic = fdt32_to_cpu(magic);
-	if (magic != FDT_MAGIC)
-		die("Blob has incorrect magic number\n");
-
-	rc = fread(&totalsize, sizeof(totalsize), 1, f);
-	if (ferror(f))
-		die("Error reading DT blob size: %s\n", strerror(errno));
-	if (rc < 1) {
-		if (feof(f))
-			die("EOF reading DT blob size\n");
-		else
-			die("Mysterious short read reading blob size\n");
-	}
-
-	totalsize = fdt32_to_cpu(totalsize);
-	if (totalsize < FDT_V1_SIZE)
-		die("DT blob size (%d) is too small\n", totalsize);
-
-	blob = xmalloc(totalsize);
-
-	fdt = (struct fdt_header *)blob;
-	fdt->magic = cpu_to_fdt32(magic);
-	fdt->totalsize = cpu_to_fdt32(totalsize);
-
-	sizeleft = totalsize - sizeof(magic) - sizeof(totalsize);
-	p = blob + sizeof(magic)  + sizeof(totalsize);
-
-	while (sizeleft) {
-		if (feof(f))
-			die("EOF before reading %d bytes of DT blob\n",
-			    totalsize);
-
-		rc = fread(p, 1, sizeleft, f);
-		if (ferror(f))
-			die("Error reading DT blob: %s\n",
-			    strerror(errno));
-
-		sizeleft -= rc;
-		p += rc;
-	}
-
-	off_dt = fdt32_to_cpu(fdt->off_dt_struct);
-	off_str = fdt32_to_cpu(fdt->off_dt_strings);
-	off_mem_rsvmap = fdt32_to_cpu(fdt->off_mem_rsvmap);
-	version = fdt32_to_cpu(fdt->version);
-	boot_cpuid_phys = fdt32_to_cpu(fdt->boot_cpuid_phys);
-
-	if (off_mem_rsvmap >= totalsize)
-		die("Mem Reserve structure offset exceeds total size\n");
-
-	if (off_dt >= totalsize)
-		die("DT structure offset exceeds total size\n");
-
-	if (off_str > totalsize)
-		die("String table offset exceeds total size\n");
-
-	if (version >= 3) {
-		uint32_t size_str = fdt32_to_cpu(fdt->size_dt_strings);
-		if ((off_str+size_str < off_str) || (off_str+size_str > totalsize))
-			die("String table extends past total size\n");
-		inbuf_init(&strbuf, blob + off_str, blob + off_str + size_str);
-	} else {
-		inbuf_init(&strbuf, blob + off_str, blob + totalsize);
-	}
-
-	if (version >= 17) {
-		size_dt = fdt32_to_cpu(fdt->size_dt_struct);
-		if ((off_dt+size_dt < off_dt) || (off_dt+size_dt > totalsize))
-			die("Structure block extends past total size\n");
-	}
-
-	if (version < 16) {
-		flags |= FTF_FULLPATH | FTF_NAMEPROPS | FTF_VARALIGN;
-	} else {
-		flags |= FTF_NOPS;
-	}
-
-	inbuf_init(&memresvbuf,
-		   blob + off_mem_rsvmap, blob + totalsize);
-	inbuf_init(&dtbuf, blob + off_dt, blob + totalsize);
-
-	reservelist = flat_read_mem_reserve(&memresvbuf);
-
-	val = flat_read_word(&dtbuf);
-
-	if (val != FDT_BEGIN_NODE)
-		die("Device tree blob doesn't begin with FDT_BEGIN_NODE (begins with 0x%08x)\n", val);
-
-	tree = unflatten_tree(&dtbuf, &strbuf, "", flags);
-
-	val = flat_read_word(&dtbuf);
-	if (val != FDT_END)
-		die("Device tree blob doesn't end with FDT_END\n");
-
-	free(blob);
-
-	fclose(f);
-
-	return build_dt_info(DTSF_V1, reservelist, tree, boot_cpuid_phys);
-}
diff --git a/contrib/dtc/fstree.c b/contrib/dtc/fstree.c
deleted file mode 100644
index ae7d06c3c492..000000000000
--- a/contrib/dtc/fstree.c
+++ /dev/null
@@ -1,90 +0,0 @@
-/*
- * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2005.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
- *                                                                   USA
- */
-
-#include "dtc.h"
-
-#include <dirent.h>
-#include <sys/stat.h>
-
-static struct node *read_fstree(const char *dirname)
-{
-	DIR *d;
-	struct dirent *de;
-	struct stat st;
-	struct node *tree;
-
-	d = opendir(dirname);
-	if (!d)
-		die("Couldn't opendir() \"%s\": %s\n", dirname, strerror(errno));
-
-	tree = build_node(NULL, NULL);
-
-	while ((de = readdir(d)) != NULL) {
-		char *tmpname;
-
-		if (streq(de->d_name, ".")
-		    || streq(de->d_name, ".."))
-			continue;
-
-		tmpname = join_path(dirname, de->d_name);
-
-		if (lstat(tmpname, &st) < 0)
-			die("stat(%s): %s\n", tmpname, strerror(errno));
-
-		if (S_ISREG(st.st_mode)) {
-			struct property *prop;
-			FILE *pfile;
-
-			pfile = fopen(tmpname, "rb");
-			if (! pfile) {
-				fprintf(stderr,
-					"WARNING: Cannot open %s: %s\n",
-					tmpname, strerror(errno));
-			} else {
-				prop = build_property(xstrdup(de->d_name),
-						      data_copy_file(pfile,
-								     st.st_size));
-				add_property(tree, prop);
-				fclose(pfile);
-			}
-		} else if (S_ISDIR(st.st_mode)) {
-			struct node *newchild;
-
-			newchild = read_fstree(tmpname);
-			newchild = name_node(newchild, xstrdup(de->d_name));
-			add_child(tree, newchild);
-		}
-
-		free(tmpname);
-	}
-
-	closedir(d);
-	return tree;
-}
-
-struct dt_info *dt_from_fs(const char *dirname)
-{
-	struct node *tree;
-
-	tree = read_fstree(dirname);
-	tree = name_node(tree, "");
-
-	return build_dt_info(DTSF_V1, NULL, tree, guess_boot_cpuid(tree));
-}
diff --git a/contrib/dtc/libfdt/Makefile.libfdt b/contrib/dtc/libfdt/Makefile.libfdt
deleted file mode 100644
index 098b3f36e668..000000000000
--- a/contrib/dtc/libfdt/Makefile.libfdt
+++ /dev/null
@@ -1,11 +0,0 @@
-# Makefile.libfdt
-#
-# This is not a complete Makefile of itself.  Instead, it is designed to
-# be easily embeddable into other systems of Makefiles.
-#
-LIBFDT_soname = libfdt.$(SHAREDLIB_EXT).1
-LIBFDT_INCLUDES = fdt.h libfdt.h libfdt_env.h
-LIBFDT_VERSION = version.lds
-LIBFDT_SRCS = fdt.c fdt_ro.c fdt_wip.c fdt_sw.c fdt_rw.c fdt_strerror.c fdt_empty_tree.c \
-	fdt_addresses.c fdt_overlay.c
-LIBFDT_OBJS = $(LIBFDT_SRCS:%.c=%.o)
diff --git a/contrib/dtc/libfdt/TODO b/contrib/dtc/libfdt/TODO
deleted file mode 100644
index 288437e394fc..000000000000
--- a/contrib/dtc/libfdt/TODO
+++ /dev/null
@@ -1,3 +0,0 @@
-- Tree traversal functions
-- Graft function
-- Complete libfdt.h documenting comments
diff --git a/contrib/dtc/libfdt/fdt.c b/contrib/dtc/libfdt/fdt.c
deleted file mode 100644
index 22286a1aaeaf..000000000000
--- a/contrib/dtc/libfdt/fdt.c
+++ /dev/null
@@ -1,251 +0,0 @@
-/*
- * libfdt - Flat Device Tree manipulation
- * Copyright (C) 2006 David Gibson, IBM Corporation.
- *
- * libfdt is dual licensed: you can use it either under the terms of
- * the GPL, or the BSD license, at your option.
- *
- *  a) This library is free software; you can redistribute it and/or
- *     modify it under the terms of the GNU General Public License as
- *     published by the Free Software Foundation; either version 2 of the
- *     License, or (at your option) any later version.
- *
- *     This library is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public
- *     License along with this library; if not, write to the Free
- *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *     MA 02110-1301 USA
- *
- * Alternatively,
- *
- *  b) Redistribution and use in source and binary forms, with or
- *     without modification, are permitted provided that the following
- *     conditions are met:
- *
- *     1. Redistributions of source code must retain the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer.
- *     2. Redistributions in binary form must reproduce the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer in the documentation and/or other materials
- *        provided with the distribution.
- *
- *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-#include "libfdt_env.h"
-
-#include <fdt.h>
-#include <libfdt.h>
-
-#include "libfdt_internal.h"
-
-int fdt_check_header(const void *fdt)
-{
-	if (fdt_magic(fdt) == FDT_MAGIC) {
-		/* Complete tree */
-		if (fdt_version(fdt) < FDT_FIRST_SUPPORTED_VERSION)
-			return -FDT_ERR_BADVERSION;
-		if (fdt_last_comp_version(fdt) > FDT_LAST_SUPPORTED_VERSION)
-			return -FDT_ERR_BADVERSION;
-	} else if (fdt_magic(fdt) == FDT_SW_MAGIC) {
-		/* Unfinished sequential-write blob */
-		if (fdt_size_dt_struct(fdt) == 0)
-			return -FDT_ERR_BADSTATE;
-	} else {
-		return -FDT_ERR_BADMAGIC;
-	}
-
-	return 0;
-}
-
-const void *fdt_offset_ptr(const void *fdt, int offset, unsigned int len)
-{
-	unsigned absoffset = offset + fdt_off_dt_struct(fdt);
-
-	if ((absoffset < offset)
-	    || ((absoffset + len) < absoffset)
-	    || (absoffset + len) > fdt_totalsize(fdt))
-		return NULL;
-
-	if (fdt_version(fdt) >= 0x11)
-		if (((offset + len) < offset)
-		    || ((offset + len) > fdt_size_dt_struct(fdt)))
-			return NULL;
-
-	return _fdt_offset_ptr(fdt, offset);
-}
-
-uint32_t fdt_next_tag(const void *fdt, int startoffset, int *nextoffset)
-{
-	const fdt32_t *tagp, *lenp;
-	uint32_t tag;
-	int offset = startoffset;
-	const char *p;
-
-	*nextoffset = -FDT_ERR_TRUNCATED;
-	tagp = fdt_offset_ptr(fdt, offset, FDT_TAGSIZE);
-	if (!tagp)
-		return FDT_END; /* premature end */
-	tag = fdt32_to_cpu(*tagp);
-	offset += FDT_TAGSIZE;
-
-	*nextoffset = -FDT_ERR_BADSTRUCTURE;
-	switch (tag) {
-	case FDT_BEGIN_NODE:
-		/* skip name */
-		do {
-			p = fdt_offset_ptr(fdt, offset++, 1);
-		} while (p && (*p != '\0'));
-		if (!p)
-			return FDT_END; /* premature end */
-		break;
-
-	case FDT_PROP:
-		lenp = fdt_offset_ptr(fdt, offset, sizeof(*lenp));
-		if (!lenp)
-			return FDT_END; /* premature end */
-		/* skip-name offset, length and value */
-		offset += sizeof(struct fdt_property) - FDT_TAGSIZE
-			+ fdt32_to_cpu(*lenp);
-		break;
-
-	case FDT_END:
-	case FDT_END_NODE:
-	case FDT_NOP:
-		break;
-
-	default:
-		return FDT_END;
-	}
-
-	if (!fdt_offset_ptr(fdt, startoffset, offset - startoffset))
-		return FDT_END; /* premature end */
-
-	*nextoffset = FDT_TAGALIGN(offset);
-	return tag;
-}
-
-int _fdt_check_node_offset(const void *fdt, int offset)
-{
-	if ((offset < 0) || (offset % FDT_TAGSIZE)
-	    || (fdt_next_tag(fdt, offset, &offset) != FDT_BEGIN_NODE))
-		return -FDT_ERR_BADOFFSET;
-
-	return offset;
-}
-
-int _fdt_check_prop_offset(const void *fdt, int offset)
-{
-	if ((offset < 0) || (offset % FDT_TAGSIZE)
-	    || (fdt_next_tag(fdt, offset, &offset) != FDT_PROP))
-		return -FDT_ERR_BADOFFSET;
-
-	return offset;
-}
-
-int fdt_next_node(const void *fdt, int offset, int *depth)
-{
-	int nextoffset = 0;
-	uint32_t tag;
-
-	if (offset >= 0)
-		if ((nextoffset = _fdt_check_node_offset(fdt, offset)) < 0)
-			return nextoffset;
-
-	do {
-		offset = nextoffset;
-		tag = fdt_next_tag(fdt, offset, &nextoffset);
-
-		switch (tag) {
-		case FDT_PROP:
-		case FDT_NOP:
-			break;
-
-		case FDT_BEGIN_NODE:
-			if (depth)
-				(*depth)++;
-			break;
-
-		case FDT_END_NODE:
-			if (depth && ((--(*depth)) < 0))
-				return nextoffset;
-			break;
-
-		case FDT_END:
-			if ((nextoffset >= 0)
-			    || ((nextoffset == -FDT_ERR_TRUNCATED) && !depth))
-				return -FDT_ERR_NOTFOUND;
-			else
-				return nextoffset;
-		}
-	} while (tag != FDT_BEGIN_NODE);
-
-	return offset;
-}
-
-int fdt_first_subnode(const void *fdt, int offset)
-{
-	int depth = 0;
-
-	offset = fdt_next_node(fdt, offset, &depth);
-	if (offset < 0 || depth != 1)
-		return -FDT_ERR_NOTFOUND;
-
-	return offset;
-}
-
-int fdt_next_subnode(const void *fdt, int offset)
-{
-	int depth = 1;
-
-	/*
-	 * With respect to the parent, the depth of the next subnode will be
-	 * the same as the last.
-	 */
-	do {
-		offset = fdt_next_node(fdt, offset, &depth);
-		if (offset < 0 || depth < 1)
-			return -FDT_ERR_NOTFOUND;
-	} while (depth > 1);
-
-	return offset;
-}
-
-const char *_fdt_find_string(const char *strtab, int tabsize, const char *s)
-{
-	int len = strlen(s) + 1;
-	const char *last = strtab + tabsize - len;
-	const char *p;
-
-	for (p = strtab; p <= last; p++)
-		if (memcmp(p, s, len) == 0)
-			return p;
-	return NULL;
-}
-
-int fdt_move(const void *fdt, void *buf, int bufsize)
-{
-	FDT_CHECK_HEADER(fdt);
-
-	if (fdt_totalsize(fdt) > bufsize)
-		return -FDT_ERR_NOSPACE;
-
-	memmove(buf, fdt, fdt_totalsize(fdt));
-	return 0;
-}
diff --git a/contrib/dtc/libfdt/fdt.h b/contrib/dtc/libfdt/fdt.h
deleted file mode 100644
index 526aedb51556..000000000000
--- a/contrib/dtc/libfdt/fdt.h
+++ /dev/null
@@ -1,111 +0,0 @@
-#ifndef _FDT_H
-#define _FDT_H
-/*
- * libfdt - Flat Device Tree manipulation
- * Copyright (C) 2006 David Gibson, IBM Corporation.
- * Copyright 2012 Kim Phillips, Freescale Semiconductor.
- *
- * libfdt is dual licensed: you can use it either under the terms of
- * the GPL, or the BSD license, at your option.
- *
- *  a) This library is free software; you can redistribute it and/or
- *     modify it under the terms of the GNU General Public License as
- *     published by the Free Software Foundation; either version 2 of the
- *     License, or (at your option) any later version.
- *
- *     This library is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public
- *     License along with this library; if not, write to the Free
- *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *     MA 02110-1301 USA
- *
- * Alternatively,
- *
- *  b) Redistribution and use in source and binary forms, with or
- *     without modification, are permitted provided that the following
- *     conditions are met:
- *
- *     1. Redistributions of source code must retain the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer.
- *     2. Redistributions in binary form must reproduce the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer in the documentation and/or other materials
- *        provided with the distribution.
- *
- *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef __ASSEMBLY__
-
-struct fdt_header {
-	fdt32_t magic;			 /* magic word FDT_MAGIC */
-	fdt32_t totalsize;		 /* total size of DT block */
-	fdt32_t off_dt_struct;		 /* offset to structure */
-	fdt32_t off_dt_strings;		 /* offset to strings */
-	fdt32_t off_mem_rsvmap;		 /* offset to memory reserve map */
-	fdt32_t version;		 /* format version */
-	fdt32_t last_comp_version;	 /* last compatible version */
-
-	/* version 2 fields below */
-	fdt32_t boot_cpuid_phys;	 /* Which physical CPU id we're
-					    booting on */
-	/* version 3 fields below */
-	fdt32_t size_dt_strings;	 /* size of the strings block */
-
-	/* version 17 fields below */
-	fdt32_t size_dt_struct;		 /* size of the structure block */
-};
-
-struct fdt_reserve_entry {
-	fdt64_t address;
-	fdt64_t size;
-};
-
-struct fdt_node_header {
-	fdt32_t tag;
-	char name[0];
-};
-
-struct fdt_property {
-	fdt32_t tag;
-	fdt32_t len;
-	fdt32_t nameoff;
-	char data[0];
-};
-
-#endif /* !__ASSEMBLY */
-
-#define FDT_MAGIC	0xd00dfeed	/* 4: version, 4: total size */
-#define FDT_TAGSIZE	sizeof(fdt32_t)
-
-#define FDT_BEGIN_NODE	0x1		/* Start node: full name */
-#define FDT_END_NODE	0x2		/* End node */
-#define FDT_PROP	0x3		/* Property: name off,
-					   size, content */
-#define FDT_NOP		0x4		/* nop */
-#define FDT_END		0x9
-
-#define FDT_V1_SIZE	(7*sizeof(fdt32_t))
-#define FDT_V2_SIZE	(FDT_V1_SIZE + sizeof(fdt32_t))
-#define FDT_V3_SIZE	(FDT_V2_SIZE + sizeof(fdt32_t))
-#define FDT_V16_SIZE	FDT_V3_SIZE
-#define FDT_V17_SIZE	(FDT_V16_SIZE + sizeof(fdt32_t))
-
-#endif /* _FDT_H */
diff --git a/contrib/dtc/libfdt/fdt_addresses.c b/contrib/dtc/libfdt/fdt_addresses.c
deleted file mode 100644
index eff4dbcc729d..000000000000
--- a/contrib/dtc/libfdt/fdt_addresses.c
+++ /dev/null
@@ -1,96 +0,0 @@
-/*
- * libfdt - Flat Device Tree manipulation
- * Copyright (C) 2014 David Gibson <david@gibson.dropbear.id.au>
- *
- * libfdt is dual licensed: you can use it either under the terms of
- * the GPL, or the BSD license, at your option.
- *
- *  a) This library is free software; you can redistribute it and/or
- *     modify it under the terms of the GNU General Public License as
- *     published by the Free Software Foundation; either version 2 of the
- *     License, or (at your option) any later version.
- *
- *     This library is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public
- *     License along with this library; if not, write to the Free
- *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *     MA 02110-1301 USA
- *
- * Alternatively,
- *
- *  b) Redistribution and use in source and binary forms, with or
- *     without modification, are permitted provided that the following
- *     conditions are met:
- *
- *     1. Redistributions of source code must retain the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer.
- *     2. Redistributions in binary form must reproduce the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer in the documentation and/or other materials
- *        provided with the distribution.
- *
- *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-#include "libfdt_env.h"
-
-#include <fdt.h>
-#include <libfdt.h>
-
-#include "libfdt_internal.h"
-
-int fdt_address_cells(const void *fdt, int nodeoffset)
-{
-	const fdt32_t *ac;
-	int val;
-	int len;
-
-	ac = fdt_getprop(fdt, nodeoffset, "#address-cells", &len);
-	if (!ac)
-		return 2;
-
-	if (len != sizeof(*ac))
-		return -FDT_ERR_BADNCELLS;
-
-	val = fdt32_to_cpu(*ac);
-	if ((val <= 0) || (val > FDT_MAX_NCELLS))
-		return -FDT_ERR_BADNCELLS;
-
-	return val;
-}
-
-int fdt_size_cells(const void *fdt, int nodeoffset)
-{
-	const fdt32_t *sc;
-	int val;
-	int len;
-
-	sc = fdt_getprop(fdt, nodeoffset, "#size-cells", &len);
-	if (!sc)
-		return 2;
-
-	if (len != sizeof(*sc))
-		return -FDT_ERR_BADNCELLS;
-
-	val = fdt32_to_cpu(*sc);
-	if ((val < 0) || (val > FDT_MAX_NCELLS))
-		return -FDT_ERR_BADNCELLS;
-
-	return val;
-}
diff --git a/contrib/dtc/libfdt/fdt_empty_tree.c b/contrib/dtc/libfdt/fdt_empty_tree.c
deleted file mode 100644
index f72d13b1d19c..000000000000
--- a/contrib/dtc/libfdt/fdt_empty_tree.c
+++ /dev/null
@@ -1,84 +0,0 @@
-/*
- * libfdt - Flat Device Tree manipulation
- * Copyright (C) 2012 David Gibson, IBM Corporation.
- *
- * libfdt is dual licensed: you can use it either under the terms of
- * the GPL, or the BSD license, at your option.
- *
- *  a) This library is free software; you can redistribute it and/or
- *     modify it under the terms of the GNU General Public License as
- *     published by the Free Software Foundation; either version 2 of the
- *     License, or (at your option) any later version.
- *
- *     This library is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public
- *     License along with this library; if not, write to the Free
- *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *     MA 02110-1301 USA
- *
- * Alternatively,
- *
- *  b) Redistribution and use in source and binary forms, with or
- *     without modification, are permitted provided that the following
- *     conditions are met:
- *
- *     1. Redistributions of source code must retain the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer.
- *     2. Redistributions in binary form must reproduce the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer in the documentation and/or other materials
- *        provided with the distribution.
- *
- *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-#include "libfdt_env.h"
-
-#include <fdt.h>
-#include <libfdt.h>
-
-#include "libfdt_internal.h"
-
-int fdt_create_empty_tree(void *buf, int bufsize)
-{
-	int err;
-
-	err = fdt_create(buf, bufsize);
-	if (err)
-		return err;
-
-	err = fdt_finish_reservemap(buf);
-	if (err)
-		return err;
-
-	err = fdt_begin_node(buf, "");
-	if (err)
-		return err;
-
-	err =  fdt_end_node(buf);
-	if (err)
-		return err;
-
-	err = fdt_finish(buf);
-	if (err)
-		return err;
-
-	return fdt_open_into(buf, buf, bufsize);
-}
-
diff --git a/contrib/dtc/libfdt/fdt_overlay.c b/contrib/dtc/libfdt/fdt_overlay.c
deleted file mode 100644
index 56cb70ed4445..000000000000
--- a/contrib/dtc/libfdt/fdt_overlay.c
+++ /dev/null
@@ -1,676 +0,0 @@
-#include "libfdt_env.h"
-
-#include <fdt.h>
-#include <libfdt.h>
-
-#include "libfdt_internal.h"
-
-/**
- * overlay_get_target_phandle - retrieves the target phandle of a fragment
- * @fdto: pointer to the device tree overlay blob
- * @fragment: node offset of the fragment in the overlay
- *
- * overlay_get_target_phandle() retrieves the target phandle of an
- * overlay fragment when that fragment uses a phandle (target
- * property) instead of a path (target-path property).
- *
- * returns:
- *      the phandle pointed by the target property
- *      0, if the phandle was not found
- *	-1, if the phandle was malformed
- */
-static uint32_t overlay_get_target_phandle(const void *fdto, int fragment)
-{
-	const uint32_t *val;
-	int len;
-
-	val = fdt_getprop(fdto, fragment, "target", &len);
-	if (!val)
-		return 0;
-
-	if ((len != sizeof(*val)) || (*val == (uint32_t)-1))
-		return (uint32_t)-1;
-
-	return fdt32_to_cpu(*val);
-}
-
-/**
- * overlay_get_target - retrieves the offset of a fragment's target
- * @fdt: Base device tree blob
- * @fdto: Device tree overlay blob
- * @fragment: node offset of the fragment in the overlay
- *
- * overlay_get_target() retrieves the target offset in the base
- * device tree of a fragment, no matter how the actual targetting is
- * done (through a phandle or a path)
- *
- * returns:
- *      the targetted node offset in the base device tree
- *      Negative error code on error
- */
-static int overlay_get_target(const void *fdt, const void *fdto,
-			      int fragment)
-{
-	uint32_t phandle;
-	const char *path;
-	int path_len;
-
-	/* Try first to do a phandle based lookup */
-	phandle = overlay_get_target_phandle(fdto, fragment);
-	if (phandle == (uint32_t)-1)
-		return -FDT_ERR_BADPHANDLE;
-
-	if (phandle)
-		return fdt_node_offset_by_phandle(fdt, phandle);
-
-	/* And then a path based lookup */
-	path = fdt_getprop(fdto, fragment, "target-path", &path_len);
-	if (!path) {
-		/*
-		 * If we haven't found either a target or a
-		 * target-path property in a node that contains a
-		 * __overlay__ subnode (we wouldn't be called
-		 * otherwise), consider it a improperly written
-		 * overlay
-		 */
-		if (path_len == -FDT_ERR_NOTFOUND)
-			return -FDT_ERR_BADOVERLAY;
-
-		return path_len;
-	}
-
-	return fdt_path_offset(fdt, path);
-}
-
-/**
- * overlay_phandle_add_offset - Increases a phandle by an offset
- * @fdt: Base device tree blob
- * @node: Device tree overlay blob
- * @name: Name of the property to modify (phandle or linux,phandle)
- * @delta: offset to apply
- *
- * overlay_phandle_add_offset() increments a node phandle by a given
- * offset.
- *
- * returns:
- *      0 on success.
- *      Negative error code on error
- */
-static int overlay_phandle_add_offset(void *fdt, int node,
-				      const char *name, uint32_t delta)
-{
-	const uint32_t *val;
-	uint32_t adj_val;
-	int len;
-
-	val = fdt_getprop(fdt, node, name, &len);
-	if (!val)
-		return len;
-
-	if (len != sizeof(*val))
-		return -FDT_ERR_BADPHANDLE;
-
-	adj_val = fdt32_to_cpu(*val);
-	if ((adj_val + delta) < adj_val)
-		return -FDT_ERR_NOPHANDLES;
-
-	adj_val += delta;
-	if (adj_val == (uint32_t)-1)
-		return -FDT_ERR_NOPHANDLES;
-
-	return fdt_setprop_inplace_u32(fdt, node, name, adj_val);
-}
-
-/**
- * overlay_adjust_node_phandles - Offsets the phandles of a node
- * @fdto: Device tree overlay blob
- * @node: Offset of the node we want to adjust
- * @delta: Offset to shift the phandles of
- *
- * overlay_adjust_node_phandles() adds a constant to all the phandles
- * of a given node. This is mainly use as part of the overlay
- * application process, when we want to update all the overlay
- * phandles to not conflict with the overlays of the base device tree.
- *
- * returns:
- *      0 on success
- *      Negative error code on failure
- */
-static int overlay_adjust_node_phandles(void *fdto, int node,
-					uint32_t delta)
-{
-	int child;
-	int ret;
-
-	ret = overlay_phandle_add_offset(fdto, node, "phandle", delta);
-	if (ret && ret != -FDT_ERR_NOTFOUND)
-		return ret;
-
-	ret = overlay_phandle_add_offset(fdto, node, "linux,phandle", delta);
-	if (ret && ret != -FDT_ERR_NOTFOUND)
-		return ret;
-
-	fdt_for_each_subnode(child, fdto, node) {
-		ret = overlay_adjust_node_phandles(fdto, child, delta);
-		if (ret)
-			return ret;
-	}
-
-	return 0;
-}
-
-/**
- * overlay_adjust_local_phandles - Adjust the phandles of a whole overlay
- * @fdto: Device tree overlay blob
- * @delta: Offset to shift the phandles of
- *
- * overlay_adjust_local_phandles() adds a constant to all the
- * phandles of an overlay. This is mainly use as part of the overlay
- * application process, when we want to update all the overlay
- * phandles to not conflict with the overlays of the base device tree.
- *
- * returns:
- *      0 on success
- *      Negative error code on failure
- */
-static int overlay_adjust_local_phandles(void *fdto, uint32_t delta)
-{
-	/*
-	 * Start adjusting the phandles from the overlay root
-	 */
-	return overlay_adjust_node_phandles(fdto, 0, delta);
-}
-
-/**
- * overlay_update_local_node_references - Adjust the overlay references
- * @fdto: Device tree overlay blob
- * @tree_node: Node offset of the node to operate on
- * @fixup_node: Node offset of the matching local fixups node
- * @delta: Offset to shift the phandles of
- *
- * overlay_update_local_nodes_references() update the phandles
- * pointing to a node within the device tree overlay by adding a
- * constant delta.
- *
- * This is mainly used as part of a device tree application process,
- * where you want the device tree overlays phandles to not conflict
- * with the ones from the base device tree before merging them.
- *
- * returns:
- *      0 on success
- *      Negative error code on failure
- */
-static int overlay_update_local_node_references(void *fdto,
-						int tree_node,
-						int fixup_node,
-						uint32_t delta)
-{
-	int fixup_prop;
-	int fixup_child;
-	int ret;
-
-	fdt_for_each_property_offset(fixup_prop, fdto, fixup_node) {
-		const uint32_t *fixup_val;
-		const char *tree_val;
-		const char *name;
-		int fixup_len;
-		int tree_len;
-		int i;
-
-		fixup_val = fdt_getprop_by_offset(fdto, fixup_prop,
-						  &name, &fixup_len);
-		if (!fixup_val)
-			return fixup_len;
-
-		if (fixup_len % sizeof(uint32_t))
-			return -FDT_ERR_BADOVERLAY;
-
-		tree_val = fdt_getprop(fdto, tree_node, name, &tree_len);
-		if (!tree_val) {
-			if (tree_len == -FDT_ERR_NOTFOUND)
-				return -FDT_ERR_BADOVERLAY;
-
-			return tree_len;
-		}
-
-		for (i = 0; i < (fixup_len / sizeof(uint32_t)); i++) {
-			uint32_t adj_val, poffset;
-
-			poffset = fdt32_to_cpu(fixup_val[i]);
-
-			/*
-			 * phandles to fixup can be unaligned.
-			 *
-			 * Use a memcpy for the architectures that do
-			 * not support unaligned accesses.
-			 */
-			memcpy(&adj_val, tree_val + poffset, sizeof(adj_val));
-
-			adj_val = fdt32_to_cpu(adj_val);
-			adj_val += delta;
-			adj_val = cpu_to_fdt32(adj_val);
-
-			ret = fdt_setprop_inplace_namelen_partial(fdto,
-								  tree_node,
-								  name,
-								  strlen(name),
-								  poffset,
-								  &adj_val,
-								  sizeof(adj_val));
-			if (ret == -FDT_ERR_NOSPACE)
-				return -FDT_ERR_BADOVERLAY;
-
-			if (ret)
-				return ret;
-		}
-	}
-
-	fdt_for_each_subnode(fixup_child, fdto, fixup_node) {
-		const char *fixup_child_name = fdt_get_name(fdto, fixup_child,
-							    NULL);
-		int tree_child;
-
-		tree_child = fdt_subnode_offset(fdto, tree_node,
-						fixup_child_name);
-		if (ret == -FDT_ERR_NOTFOUND)
-			return -FDT_ERR_BADOVERLAY;
-		if (tree_child < 0)
-			return tree_child;
-
-		ret = overlay_update_local_node_references(fdto,
-							   tree_child,
-							   fixup_child,
-							   delta);
-		if (ret)
-			return ret;
-	}
-
-	return 0;
-}
-
-/**
- * overlay_update_local_references - Adjust the overlay references
- * @fdto: Device tree overlay blob
- * @delta: Offset to shift the phandles of
- *
- * overlay_update_local_references() update all the phandles pointing
- * to a node within the device tree overlay by adding a constant
- * delta to not conflict with the base overlay.
- *
- * This is mainly used as part of a device tree application process,
- * where you want the device tree overlays phandles to not conflict
- * with the ones from the base device tree before merging them.
- *
- * returns:
- *      0 on success
- *      Negative error code on failure
- */
-static int overlay_update_local_references(void *fdto, uint32_t delta)
-{
-	int fixups;
-
-	fixups = fdt_path_offset(fdto, "/__local_fixups__");
-	if (fixups < 0) {
-		/* There's no local phandles to adjust, bail out */
-		if (fixups == -FDT_ERR_NOTFOUND)
-			return 0;
-
-		return fixups;
-	}
-
-	/*
-	 * Update our local references from the root of the tree
-	 */
-	return overlay_update_local_node_references(fdto, 0, fixups,
-						    delta);
-}
-
-/**
- * overlay_fixup_one_phandle - Set an overlay phandle to the base one
- * @fdt: Base Device Tree blob
- * @fdto: Device tree overlay blob
- * @symbols_off: Node offset of the symbols node in the base device tree
- * @path: Path to a node holding a phandle in the overlay
- * @path_len: number of path characters to consider
- * @name: Name of the property holding the phandle reference in the overlay
- * @name_len: number of name characters to consider
- * @poffset: Offset within the overlay property where the phandle is stored
- * @label: Label of the node referenced by the phandle
- *
- * overlay_fixup_one_phandle() resolves an overlay phandle pointing to
- * a node in the base device tree.
- *
- * This is part of the device tree overlay application process, when
- * you want all the phandles in the overlay to point to the actual
- * base dt nodes.
- *
- * returns:
- *      0 on success
- *      Negative error code on failure
- */
-static int overlay_fixup_one_phandle(void *fdt, void *fdto,
-				     int symbols_off,
-				     const char *path, uint32_t path_len,
-				     const char *name, uint32_t name_len,
-				     int poffset, const char *label)
-{
-	const char *symbol_path;
-	uint32_t phandle;
-	int symbol_off, fixup_off;
-	int prop_len;
-
-	if (symbols_off < 0)
-		return symbols_off;
-
-	symbol_path = fdt_getprop(fdt, symbols_off, label,
-				  &prop_len);
-	if (!symbol_path)
-		return prop_len;
-
-	symbol_off = fdt_path_offset(fdt, symbol_path);
-	if (symbol_off < 0)
-		return symbol_off;
-
-	phandle = fdt_get_phandle(fdt, symbol_off);
-	if (!phandle)
-		return -FDT_ERR_NOTFOUND;
-
-	fixup_off = fdt_path_offset_namelen(fdto, path, path_len);
-	if (fixup_off == -FDT_ERR_NOTFOUND)
-		return -FDT_ERR_BADOVERLAY;
-	if (fixup_off < 0)
-		return fixup_off;
-
-	phandle = cpu_to_fdt32(phandle);
-	return fdt_setprop_inplace_namelen_partial(fdto, fixup_off,
-						   name, name_len, poffset,
-						   &phandle, sizeof(phandle));
-};
-
-/**
- * overlay_fixup_phandle - Set an overlay phandle to the base one
- * @fdt: Base Device Tree blob
- * @fdto: Device tree overlay blob
- * @symbols_off: Node offset of the symbols node in the base device tree
- * @property: Property offset in the overlay holding the list of fixups
- *
- * overlay_fixup_phandle() resolves all the overlay phandles pointed
- * to in a __fixups__ property, and updates them to match the phandles
- * in use in the base device tree.
- *
- * This is part of the device tree overlay application process, when
- * you want all the phandles in the overlay to point to the actual
- * base dt nodes.
- *
- * returns:
- *      0 on success
- *      Negative error code on failure
- */
-static int overlay_fixup_phandle(void *fdt, void *fdto, int symbols_off,
-				 int property)
-{
-	const char *value;
-	const char *label;
-	int len;
-
-	value = fdt_getprop_by_offset(fdto, property,
-				      &label, &len);
-	if (!value) {
-		if (len == -FDT_ERR_NOTFOUND)
-			return -FDT_ERR_INTERNAL;
-
-		return len;
-	}
-
-	do {
-		const char *path, *name, *fixup_end;
-		const char *fixup_str = value;
-		uint32_t path_len, name_len;
-		uint32_t fixup_len;
-		char *sep, *endptr;
-		int poffset, ret;
-
-		fixup_end = memchr(value, '\0', len);
-		if (!fixup_end)
-			return -FDT_ERR_BADOVERLAY;
-		fixup_len = fixup_end - fixup_str;
-
-		len -= fixup_len + 1;
-		value += fixup_len + 1;
-
-		path = fixup_str;
-		sep = memchr(fixup_str, ':', fixup_len);
-		if (!sep || *sep != ':')
-			return -FDT_ERR_BADOVERLAY;
-
-		path_len = sep - path;
-		if (path_len == (fixup_len - 1))
-			return -FDT_ERR_BADOVERLAY;
-
-		fixup_len -= path_len + 1;
-		name = sep + 1;
-		sep = memchr(name, ':', fixup_len);
-		if (!sep || *sep != ':')
-			return -FDT_ERR_BADOVERLAY;
-
-		name_len = sep - name;
-		if (!name_len)
-			return -FDT_ERR_BADOVERLAY;
-
-		poffset = strtoul(sep + 1, &endptr, 10);
-		if ((*endptr != '\0') || (endptr <= (sep + 1)))
-			return -FDT_ERR_BADOVERLAY;
-
-		ret = overlay_fixup_one_phandle(fdt, fdto, symbols_off,
-						path, path_len, name, name_len,
-						poffset, label);
-		if (ret)
-			return ret;
-	} while (len > 0);
-
-	return 0;
-}
-
-/**
- * overlay_fixup_phandles - Resolve the overlay phandles to the base
- *                          device tree
- * @fdt: Base Device Tree blob
- * @fdto: Device tree overlay blob
- *
- * overlay_fixup_phandles() resolves all the overlay phandles pointing
- * to nodes in the base device tree.
- *
- * This is one of the steps of the device tree overlay application
- * process, when you want all the phandles in the overlay to point to
- * the actual base dt nodes.
- *
- * returns:
- *      0 on success
- *      Negative error code on failure
- */
-static int overlay_fixup_phandles(void *fdt, void *fdto)
-{
-	int fixups_off, symbols_off;
-	int property;
-
-	/* We can have overlays without any fixups */
-	fixups_off = fdt_path_offset(fdto, "/__fixups__");
-	if (fixups_off == -FDT_ERR_NOTFOUND)
-		return 0; /* nothing to do */
-	if (fixups_off < 0)
-		return fixups_off;
-
-	/* And base DTs without symbols */
-	symbols_off = fdt_path_offset(fdt, "/__symbols__");
-	if ((symbols_off < 0 && (symbols_off != -FDT_ERR_NOTFOUND)))
-		return symbols_off;
-
-	fdt_for_each_property_offset(property, fdto, fixups_off) {
-		int ret;
-
-		ret = overlay_fixup_phandle(fdt, fdto, symbols_off, property);
-		if (ret)
-			return ret;
-	}
-
-	return 0;
-}
-
-/**
- * overlay_apply_node - Merges a node into the base device tree
- * @fdt: Base Device Tree blob
- * @target: Node offset in the base device tree to apply the fragment to
- * @fdto: Device tree overlay blob
- * @node: Node offset in the overlay holding the changes to merge
- *
- * overlay_apply_node() merges a node into a target base device tree
- * node pointed.
- *
- * This is part of the final step in the device tree overlay
- * application process, when all the phandles have been adjusted and
- * resolved and you just have to merge overlay into the base device
- * tree.
- *
- * returns:
- *      0 on success
- *      Negative error code on failure
- */
-static int overlay_apply_node(void *fdt, int target,
-			      void *fdto, int node)
-{
-	int property;
-	int subnode;
-
-	fdt_for_each_property_offset(property, fdto, node) {
-		const char *name;
-		const void *prop;
-		int prop_len;
-		int ret;
-
-		prop = fdt_getprop_by_offset(fdto, property, &name,
-					     &prop_len);
-		if (prop_len == -FDT_ERR_NOTFOUND)
-			return -FDT_ERR_INTERNAL;
-		if (prop_len < 0)
-			return prop_len;
-
-		ret = fdt_setprop(fdt, target, name, prop, prop_len);
-		if (ret)
-			return ret;
-	}
-
-	fdt_for_each_subnode(subnode, fdto, node) {
-		const char *name = fdt_get_name(fdto, subnode, NULL);
-		int nnode;
-		int ret;
-
-		nnode = fdt_add_subnode(fdt, target, name);
-		if (nnode == -FDT_ERR_EXISTS) {
-			nnode = fdt_subnode_offset(fdt, target, name);
-			if (nnode == -FDT_ERR_NOTFOUND)
-				return -FDT_ERR_INTERNAL;
-		}
-
-		if (nnode < 0)
-			return nnode;
-
-		ret = overlay_apply_node(fdt, nnode, fdto, subnode);
-		if (ret)
-			return ret;
-	}
-
-	return 0;
-}
-
-/**
- * overlay_merge - Merge an overlay into its base device tree
- * @fdt: Base Device Tree blob
- * @fdto: Device tree overlay blob
- *
- * overlay_merge() merges an overlay into its base device tree.
- *
- * This is the final step in the device tree overlay application
- * process, when all the phandles have been adjusted and resolved and
- * you just have to merge overlay into the base device tree.
- *
- * returns:
- *      0 on success
- *      Negative error code on failure
- */
-static int overlay_merge(void *fdt, void *fdto)
-{
-	int fragment;
-
-	fdt_for_each_subnode(fragment, fdto, 0) {
-		int overlay;
-		int target;
-		int ret;
-
-		/*
-		 * Each fragments will have an __overlay__ node. If
-		 * they don't, it's not supposed to be merged
-		 */
-		overlay = fdt_subnode_offset(fdto, fragment, "__overlay__");
-		if (overlay == -FDT_ERR_NOTFOUND)
-			continue;
-
-		if (overlay < 0)
-			return overlay;
-
-		target = overlay_get_target(fdt, fdto, fragment);
-		if (target < 0)
-			return target;
-
-		ret = overlay_apply_node(fdt, target, fdto, overlay);
-		if (ret)
-			return ret;
-	}
-
-	return 0;
-}
-
-int fdt_overlay_apply(void *fdt, void *fdto)
-{
-	uint32_t delta = fdt_get_max_phandle(fdt);
-	int ret;
-
-	FDT_CHECK_HEADER(fdt);
-	FDT_CHECK_HEADER(fdto);
-
-	ret = overlay_adjust_local_phandles(fdto, delta);
-	if (ret)
-		goto err;
-
-	ret = overlay_update_local_references(fdto, delta);
-	if (ret)
-		goto err;
-
-	ret = overlay_fixup_phandles(fdt, fdto);
-	if (ret)
-		goto err;
-
-	ret = overlay_merge(fdt, fdto);
-	if (ret)
-		goto err;
-
-	/*
-	 * The overlay has been damaged, erase its magic.
-	 */
-	fdt_set_magic(fdto, ~0);
-
-	return 0;
-
-err:
-	/*
-	 * The overlay might have been damaged, erase its magic.
-	 */
-	fdt_set_magic(fdto, ~0);
-
-	/*
-	 * The base device tree might have been damaged, erase its
-	 * magic.
-	 */
-	fdt_set_magic(fdt, ~0);
-
-	return ret;
-}
diff --git a/contrib/dtc/libfdt/fdt_ro.c b/contrib/dtc/libfdt/fdt_ro.c
deleted file mode 100644
index 3d00d2eee0e3..000000000000
--- a/contrib/dtc/libfdt/fdt_ro.c
+++ /dev/null
@@ -1,703 +0,0 @@
-/*
- * libfdt - Flat Device Tree manipulation
- * Copyright (C) 2006 David Gibson, IBM Corporation.
- *
- * libfdt is dual licensed: you can use it either under the terms of
- * the GPL, or the BSD license, at your option.
- *
- *  a) This library is free software; you can redistribute it and/or
- *     modify it under the terms of the GNU General Public License as
- *     published by the Free Software Foundation; either version 2 of the
- *     License, or (at your option) any later version.
- *
- *     This library is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public
- *     License along with this library; if not, write to the Free
- *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *     MA 02110-1301 USA
- *
- * Alternatively,
- *
- *  b) Redistribution and use in source and binary forms, with or
- *     without modification, are permitted provided that the following
- *     conditions are met:
- *
- *     1. Redistributions of source code must retain the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer.
- *     2. Redistributions in binary form must reproduce the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer in the documentation and/or other materials
- *        provided with the distribution.
- *
- *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-#include "libfdt_env.h"
-
-#include <fdt.h>
-#include <libfdt.h>
-
-#include "libfdt_internal.h"
-
-static int _fdt_nodename_eq(const void *fdt, int offset,
-			    const char *s, int len)
-{
-	const char *p = fdt_offset_ptr(fdt, offset + FDT_TAGSIZE, len+1);
-
-	if (! p)
-		/* short match */
-		return 0;
-
-	if (memcmp(p, s, len) != 0)
-		return 0;
-
-	if (p[len] == '\0')
-		return 1;
-	else if (!memchr(s, '@', len) && (p[len] == '@'))
-		return 1;
-	else
-		return 0;
-}
-
-const char *fdt_string(const void *fdt, int stroffset)
-{
-	return (const char *)fdt + fdt_off_dt_strings(fdt) + stroffset;
-}
-
-static int _fdt_string_eq(const void *fdt, int stroffset,
-			  const char *s, int len)
-{
-	const char *p = fdt_string(fdt, stroffset);
-
-	return (strlen(p) == len) && (memcmp(p, s, len) == 0);
-}
-
-uint32_t fdt_get_max_phandle(const void *fdt)
-{
-	uint32_t max_phandle = 0;
-	int offset;
-
-	for (offset = fdt_next_node(fdt, -1, NULL);;
-	     offset = fdt_next_node(fdt, offset, NULL)) {
-		uint32_t phandle;
-
-		if (offset == -FDT_ERR_NOTFOUND)
-			return max_phandle;
-
-		if (offset < 0)
-			return (uint32_t)-1;
-
-		phandle = fdt_get_phandle(fdt, offset);
-		if (phandle == (uint32_t)-1)
-			continue;
-
-		if (phandle > max_phandle)
-			max_phandle = phandle;
-	}
-
-	return 0;
-}
-
-int fdt_get_mem_rsv(const void *fdt, int n, uint64_t *address, uint64_t *size)
-{
-	FDT_CHECK_HEADER(fdt);
-	*address = fdt64_to_cpu(_fdt_mem_rsv(fdt, n)->address);
-	*size = fdt64_to_cpu(_fdt_mem_rsv(fdt, n)->size);
-	return 0;
-}
-
-int fdt_num_mem_rsv(const void *fdt)
-{
-	int i = 0;
-
-	while (fdt64_to_cpu(_fdt_mem_rsv(fdt, i)->size) != 0)
-		i++;
-	return i;
-}
-
-static int _nextprop(const void *fdt, int offset)
-{
-	uint32_t tag;
-	int nextoffset;
-
-	do {
-		tag = fdt_next_tag(fdt, offset, &nextoffset);
-
-		switch (tag) {
-		case FDT_END:
-			if (nextoffset >= 0)
-				return -FDT_ERR_BADSTRUCTURE;
-			else
-				return nextoffset;
-
-		case FDT_PROP:
-			return offset;
-		}
-		offset = nextoffset;
-	} while (tag == FDT_NOP);
-
-	return -FDT_ERR_NOTFOUND;
-}
-
-int fdt_subnode_offset_namelen(const void *fdt, int offset,
-			       const char *name, int namelen)
-{
-	int depth;
-
-	FDT_CHECK_HEADER(fdt);
-
-	for (depth = 0;
-	     (offset >= 0) && (depth >= 0);
-	     offset = fdt_next_node(fdt, offset, &depth))
-		if ((depth == 1)
-		    && _fdt_nodename_eq(fdt, offset, name, namelen))
-			return offset;
-
-	if (depth < 0)
-		return -FDT_ERR_NOTFOUND;
-	return offset; /* error */
-}
-
-int fdt_subnode_offset(const void *fdt, int parentoffset,
-		       const char *name)
-{
-	return fdt_subnode_offset_namelen(fdt, parentoffset, name, strlen(name));
-}
-
-int fdt_path_offset_namelen(const void *fdt, const char *path, int namelen)
-{
-	const char *end = path + namelen;
-	const char *p = path;
-	int offset = 0;
-
-	FDT_CHECK_HEADER(fdt);
-
-	/* see if we have an alias */
-	if (*path != '/') {
-		const char *q = memchr(path, '/', end - p);
-
-		if (!q)
-			q = end;
-
-		p = fdt_get_alias_namelen(fdt, p, q - p);
-		if (!p)
-			return -FDT_ERR_BADPATH;
-		offset = fdt_path_offset(fdt, p);
-
-		p = q;
-	}
-
-	while (p < end) {
-		const char *q;
-
-		while (*p == '/') {
-			p++;
-			if (p == end)
-				return offset;
-		}
-		q = memchr(p, '/', end - p);
-		if (! q)
-			q = end;
-
-		offset = fdt_subnode_offset_namelen(fdt, offset, p, q-p);
-		if (offset < 0)
-			return offset;
-
-		p = q;
-	}
-
-	return offset;
-}
-
-int fdt_path_offset(const void *fdt, const char *path)
-{
-	return fdt_path_offset_namelen(fdt, path, strlen(path));
-}
-
-const char *fdt_get_name(const void *fdt, int nodeoffset, int *len)
-{
-	const struct fdt_node_header *nh = _fdt_offset_ptr(fdt, nodeoffset);
-	int err;
-
-	if (((err = fdt_check_header(fdt)) != 0)
-	    || ((err = _fdt_check_node_offset(fdt, nodeoffset)) < 0))
-			goto fail;
-
-	if (len)
-		*len = strlen(nh->name);
-
-	return nh->name;
-
- fail:
-	if (len)
-		*len = err;
-	return NULL;
-}
-
-int fdt_first_property_offset(const void *fdt, int nodeoffset)
-{
-	int offset;
-
-	if ((offset = _fdt_check_node_offset(fdt, nodeoffset)) < 0)
-		return offset;
-
-	return _nextprop(fdt, offset);
-}
-
-int fdt_next_property_offset(const void *fdt, int offset)
-{
-	if ((offset = _fdt_check_prop_offset(fdt, offset)) < 0)
-		return offset;
-
-	return _nextprop(fdt, offset);
-}
-
-const struct fdt_property *fdt_get_property_by_offset(const void *fdt,
-						      int offset,
-						      int *lenp)
-{
-	int err;
-	const struct fdt_property *prop;
-
-	if ((err = _fdt_check_prop_offset(fdt, offset)) < 0) {
-		if (lenp)
-			*lenp = err;
-		return NULL;
-	}
-
-	prop = _fdt_offset_ptr(fdt, offset);
-
-	if (lenp)
-		*lenp = fdt32_to_cpu(prop->len);
-
-	return prop;
-}
-
-const struct fdt_property *fdt_get_property_namelen(const void *fdt,
-						    int offset,
-						    const char *name,
-						    int namelen, int *lenp)
-{
-	for (offset = fdt_first_property_offset(fdt, offset);
-	     (offset >= 0);
-	     (offset = fdt_next_property_offset(fdt, offset))) {
-		const struct fdt_property *prop;
-
-		if (!(prop = fdt_get_property_by_offset(fdt, offset, lenp))) {
-			offset = -FDT_ERR_INTERNAL;
-			break;
-		}
-		if (_fdt_string_eq(fdt, fdt32_to_cpu(prop->nameoff),
-				   name, namelen))
-			return prop;
-	}
-
-	if (lenp)
-		*lenp = offset;
-	return NULL;
-}
-
-const struct fdt_property *fdt_get_property(const void *fdt,
-					    int nodeoffset,
-					    const char *name, int *lenp)
-{
-	return fdt_get_property_namelen(fdt, nodeoffset, name,
-					strlen(name), lenp);
-}
-
-const void *fdt_getprop_namelen(const void *fdt, int nodeoffset,
-				const char *name, int namelen, int *lenp)
-{
-	const struct fdt_property *prop;
-
-	prop = fdt_get_property_namelen(fdt, nodeoffset, name, namelen, lenp);
-	if (! prop)
-		return NULL;
-
-	return prop->data;
-}
-
-const void *fdt_getprop_by_offset(const void *fdt, int offset,
-				  const char **namep, int *lenp)
-{
-	const struct fdt_property *prop;
-
-	prop = fdt_get_property_by_offset(fdt, offset, lenp);
-	if (!prop)
-		return NULL;
-	if (namep)
-		*namep = fdt_string(fdt, fdt32_to_cpu(prop->nameoff));
-	return prop->data;
-}
-
-const void *fdt_getprop(const void *fdt, int nodeoffset,
-			const char *name, int *lenp)
-{
-	return fdt_getprop_namelen(fdt, nodeoffset, name, strlen(name), lenp);
-}
-
-uint32_t fdt_get_phandle(const void *fdt, int nodeoffset)
-{
-	const fdt32_t *php;
-	int len;
-
-	/* FIXME: This is a bit sub-optimal, since we potentially scan
-	 * over all the properties twice. */
-	php = fdt_getprop(fdt, nodeoffset, "phandle", &len);
-	if (!php || (len != sizeof(*php))) {
-		php = fdt_getprop(fdt, nodeoffset, "linux,phandle", &len);
-		if (!php || (len != sizeof(*php)))
-			return 0;
-	}
-
-	return fdt32_to_cpu(*php);
-}
-
-const char *fdt_get_alias_namelen(const void *fdt,
-				  const char *name, int namelen)
-{
-	int aliasoffset;
-
-	aliasoffset = fdt_path_offset(fdt, "/aliases");
-	if (aliasoffset < 0)
-		return NULL;
-
-	return fdt_getprop_namelen(fdt, aliasoffset, name, namelen, NULL);
-}
-
-const char *fdt_get_alias(const void *fdt, const char *name)
-{
-	return fdt_get_alias_namelen(fdt, name, strlen(name));
-}
-
-int fdt_get_path(const void *fdt, int nodeoffset, char *buf, int buflen)
-{
-	int pdepth = 0, p = 0;
-	int offset, depth, namelen;
-	const char *name;
-
-	FDT_CHECK_HEADER(fdt);
-
-	if (buflen < 2)
-		return -FDT_ERR_NOSPACE;
-
-	for (offset = 0, depth = 0;
-	     (offset >= 0) && (offset <= nodeoffset);
-	     offset = fdt_next_node(fdt, offset, &depth)) {
-		while (pdepth > depth) {
-			do {
-				p--;
-			} while (buf[p-1] != '/');
-			pdepth--;
-		}
-
-		if (pdepth >= depth) {
-			name = fdt_get_name(fdt, offset, &namelen);
-			if (!name)
-				return namelen;
-			if ((p + namelen + 1) <= buflen) {
-				memcpy(buf + p, name, namelen);
-				p += namelen;
-				buf[p++] = '/';
-				pdepth++;
-			}
-		}
-
-		if (offset == nodeoffset) {
-			if (pdepth < (depth + 1))
-				return -FDT_ERR_NOSPACE;
-
-			if (p > 1) /* special case so that root path is "/", not "" */
-				p--;
-			buf[p] = '\0';
-			return 0;
-		}
-	}
-
-	if ((offset == -FDT_ERR_NOTFOUND) || (offset >= 0))
-		return -FDT_ERR_BADOFFSET;
-	else if (offset == -FDT_ERR_BADOFFSET)
-		return -FDT_ERR_BADSTRUCTURE;
-
-	return offset; /* error from fdt_next_node() */
-}
-
-int fdt_supernode_atdepth_offset(const void *fdt, int nodeoffset,
-				 int supernodedepth, int *nodedepth)
-{
-	int offset, depth;
-	int supernodeoffset = -FDT_ERR_INTERNAL;
-
-	FDT_CHECK_HEADER(fdt);
-
-	if (supernodedepth < 0)
-		return -FDT_ERR_NOTFOUND;
-
-	for (offset = 0, depth = 0;
-	     (offset >= 0) && (offset <= nodeoffset);
-	     offset = fdt_next_node(fdt, offset, &depth)) {
-		if (depth == supernodedepth)
-			supernodeoffset = offset;
-
-		if (offset == nodeoffset) {
-			if (nodedepth)
-				*nodedepth = depth;
-
-			if (supernodedepth > depth)
-				return -FDT_ERR_NOTFOUND;
-			else
-				return supernodeoffset;
-		}
-	}
-
-	if ((offset == -FDT_ERR_NOTFOUND) || (offset >= 0))
-		return -FDT_ERR_BADOFFSET;
-	else if (offset == -FDT_ERR_BADOFFSET)
-		return -FDT_ERR_BADSTRUCTURE;
-
-	return offset; /* error from fdt_next_node() */
-}
-
-int fdt_node_depth(const void *fdt, int nodeoffset)
-{
-	int nodedepth;
-	int err;
-
-	err = fdt_supernode_atdepth_offset(fdt, nodeoffset, 0, &nodedepth);
-	if (err)
-		return (err < 0) ? err : -FDT_ERR_INTERNAL;
-	return nodedepth;
-}
-
-int fdt_parent_offset(const void *fdt, int nodeoffset)
-{
-	int nodedepth = fdt_node_depth(fdt, nodeoffset);
-
-	if (nodedepth < 0)
-		return nodedepth;
-	return fdt_supernode_atdepth_offset(fdt, nodeoffset,
-					    nodedepth - 1, NULL);
-}
-
-int fdt_node_offset_by_prop_value(const void *fdt, int startoffset,
-				  const char *propname,
-				  const void *propval, int proplen)
-{
-	int offset;
-	const void *val;
-	int len;
-
-	FDT_CHECK_HEADER(fdt);
-
-	/* FIXME: The algorithm here is pretty horrible: we scan each
-	 * property of a node in fdt_getprop(), then if that didn't
-	 * find what we want, we scan over them again making our way
-	 * to the next node.  Still it's the easiest to implement
-	 * approach; performance can come later. */
-	for (offset = fdt_next_node(fdt, startoffset, NULL);
-	     offset >= 0;
-	     offset = fdt_next_node(fdt, offset, NULL)) {
-		val = fdt_getprop(fdt, offset, propname, &len);
-		if (val && (len == proplen)
-		    && (memcmp(val, propval, len) == 0))
-			return offset;
-	}
-
-	return offset; /* error from fdt_next_node() */
-}
-
-int fdt_node_offset_by_phandle(const void *fdt, uint32_t phandle)
-{
-	int offset;
-
-	if ((phandle == 0) || (phandle == -1))
-		return -FDT_ERR_BADPHANDLE;
-
-	FDT_CHECK_HEADER(fdt);
-
-	/* FIXME: The algorithm here is pretty horrible: we
-	 * potentially scan each property of a node in
-	 * fdt_get_phandle(), then if that didn't find what
-	 * we want, we scan over them again making our way to the next
-	 * node.  Still it's the easiest to implement approach;
-	 * performance can come later. */
-	for (offset = fdt_next_node(fdt, -1, NULL);
-	     offset >= 0;
-	     offset = fdt_next_node(fdt, offset, NULL)) {
-		if (fdt_get_phandle(fdt, offset) == phandle)
-			return offset;
-	}
-
-	return offset; /* error from fdt_next_node() */
-}
-
-int fdt_stringlist_contains(const char *strlist, int listlen, const char *str)
-{
-	int len = strlen(str);
-	const char *p;
-
-	while (listlen >= len) {
-		if (memcmp(str, strlist, len+1) == 0)
-			return 1;
-		p = memchr(strlist, '\0', listlen);
-		if (!p)
-			return 0; /* malformed strlist.. */
-		listlen -= (p-strlist) + 1;
-		strlist = p + 1;
-	}
-	return 0;
-}
-
-int fdt_stringlist_count(const void *fdt, int nodeoffset, const char *property)
-{
-	const char *list, *end;
-	int length, count = 0;
-
-	list = fdt_getprop(fdt, nodeoffset, property, &length);
-	if (!list)
-		return length;
-
-	end = list + length;
-
-	while (list < end) {
-		length = strnlen(list, end - list) + 1;
-
-		/* Abort if the last string isn't properly NUL-terminated. */
-		if (list + length > end)
-			return -FDT_ERR_BADVALUE;
-
-		list += length;
-		count++;
-	}
-
-	return count;
-}
-
-int fdt_stringlist_search(const void *fdt, int nodeoffset, const char *property,
-			  const char *string)
-{
-	int length, len, idx = 0;
-	const char *list, *end;
-
-	list = fdt_getprop(fdt, nodeoffset, property, &length);
-	if (!list)
-		return length;
-
-	len = strlen(string) + 1;
-	end = list + length;
-
-	while (list < end) {
-		length = strnlen(list, end - list) + 1;
-
-		/* Abort if the last string isn't properly NUL-terminated. */
-		if (list + length > end)
-			return -FDT_ERR_BADVALUE;
-
-		if (length == len && memcmp(list, string, length) == 0)
-			return idx;
-
-		list += length;
-		idx++;
-	}
-
-	return -FDT_ERR_NOTFOUND;
-}
-
-const char *fdt_stringlist_get(const void *fdt, int nodeoffset,
-			       const char *property, int idx,
-			       int *lenp)
-{
-	const char *list, *end;
-	int length;
-
-	list = fdt_getprop(fdt, nodeoffset, property, &length);
-	if (!list) {
-		if (lenp)
-			*lenp = length;
-
-		return NULL;
-	}
-
-	end = list + length;
-
-	while (list < end) {
-		length = strnlen(list, end - list) + 1;
-
-		/* Abort if the last string isn't properly NUL-terminated. */
-		if (list + length > end) {
-			if (lenp)
-				*lenp = -FDT_ERR_BADVALUE;
-
-			return NULL;
-		}
-
-		if (idx == 0) {
-			if (lenp)
-				*lenp = length - 1;
-
-			return list;
-		}
-
-		list += length;
-		idx--;
-	}
-
-	if (lenp)
-		*lenp = -FDT_ERR_NOTFOUND;
-
-	return NULL;
-}
-
-int fdt_node_check_compatible(const void *fdt, int nodeoffset,
-			      const char *compatible)
-{
-	const void *prop;
-	int len;
-
-	prop = fdt_getprop(fdt, nodeoffset, "compatible", &len);
-	if (!prop)
-		return len;
-
-	return !fdt_stringlist_contains(prop, len, compatible);
-}
-
-int fdt_node_offset_by_compatible(const void *fdt, int startoffset,
-				  const char *compatible)
-{
-	int offset, err;
-
-	FDT_CHECK_HEADER(fdt);
-
-	/* FIXME: The algorithm here is pretty horrible: we scan each
-	 * property of a node in fdt_node_check_compatible(), then if
-	 * that didn't find what we want, we scan over them again
-	 * making our way to the next node.  Still it's the easiest to
-	 * implement approach; performance can come later. */
-	for (offset = fdt_next_node(fdt, startoffset, NULL);
-	     offset >= 0;
-	     offset = fdt_next_node(fdt, offset, NULL)) {
-		err = fdt_node_check_compatible(fdt, offset, compatible);
-		if ((err < 0) && (err != -FDT_ERR_NOTFOUND))
-			return err;
-		else if (err == 0)
-			return offset;
-	}
-
-	return offset; /* error from fdt_next_node() */
-}
diff --git a/contrib/dtc/libfdt/fdt_rw.c b/contrib/dtc/libfdt/fdt_rw.c
deleted file mode 100644
index 3fd5847377c9..000000000000
--- a/contrib/dtc/libfdt/fdt_rw.c
+++ /dev/null
@@ -1,491 +0,0 @@
-/*
- * libfdt - Flat Device Tree manipulation
- * Copyright (C) 2006 David Gibson, IBM Corporation.
- *
- * libfdt is dual licensed: you can use it either under the terms of
- * the GPL, or the BSD license, at your option.
- *
- *  a) This library is free software; you can redistribute it and/or
- *     modify it under the terms of the GNU General Public License as
- *     published by the Free Software Foundation; either version 2 of the
- *     License, or (at your option) any later version.
- *
- *     This library is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public
- *     License along with this library; if not, write to the Free
- *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *     MA 02110-1301 USA
- *
- * Alternatively,
- *
- *  b) Redistribution and use in source and binary forms, with or
- *     without modification, are permitted provided that the following
- *     conditions are met:
- *
- *     1. Redistributions of source code must retain the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer.
- *     2. Redistributions in binary form must reproduce the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer in the documentation and/or other materials
- *        provided with the distribution.
- *
- *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-#include "libfdt_env.h"
-
-#include <fdt.h>
-#include <libfdt.h>
-
-#include "libfdt_internal.h"
-
-static int _fdt_blocks_misordered(const void *fdt,
-			      int mem_rsv_size, int struct_size)
-{
-	return (fdt_off_mem_rsvmap(fdt) < FDT_ALIGN(sizeof(struct fdt_header), 8))
-		|| (fdt_off_dt_struct(fdt) <
-		    (fdt_off_mem_rsvmap(fdt) + mem_rsv_size))
-		|| (fdt_off_dt_strings(fdt) <
-		    (fdt_off_dt_struct(fdt) + struct_size))
-		|| (fdt_totalsize(fdt) <
-		    (fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt)));
-}
-
-static int _fdt_rw_check_header(void *fdt)
-{
-	FDT_CHECK_HEADER(fdt);
-
-	if (fdt_version(fdt) < 17)
-		return -FDT_ERR_BADVERSION;
-	if (_fdt_blocks_misordered(fdt, sizeof(struct fdt_reserve_entry),
-				   fdt_size_dt_struct(fdt)))
-		return -FDT_ERR_BADLAYOUT;
-	if (fdt_version(fdt) > 17)
-		fdt_set_version(fdt, 17);
-
-	return 0;
-}
-
-#define FDT_RW_CHECK_HEADER(fdt) \
-	{ \
-		int __err; \
-		if ((__err = _fdt_rw_check_header(fdt)) != 0) \
-			return __err; \
-	}
-
-static inline int _fdt_data_size(void *fdt)
-{
-	return fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);
-}
-
-static int _fdt_splice(void *fdt, void *splicepoint, int oldlen, int newlen)
-{
-	char *p = splicepoint;
-	char *end = (char *)fdt + _fdt_data_size(fdt);
-
-	if (((p + oldlen) < p) || ((p + oldlen) > end))
-		return -FDT_ERR_BADOFFSET;
-	if ((p < (char *)fdt) || ((end - oldlen + newlen) < (char *)fdt))
-		return -FDT_ERR_BADOFFSET;
-	if ((end - oldlen + newlen) > ((char *)fdt + fdt_totalsize(fdt)))
-		return -FDT_ERR_NOSPACE;
-	memmove(p + newlen, p + oldlen, end - p - oldlen);
-	return 0;
-}
-
-static int _fdt_splice_mem_rsv(void *fdt, struct fdt_reserve_entry *p,
-			       int oldn, int newn)
-{
-	int delta = (newn - oldn) * sizeof(*p);
-	int err;
-	err = _fdt_splice(fdt, p, oldn * sizeof(*p), newn * sizeof(*p));
-	if (err)
-		return err;
-	fdt_set_off_dt_struct(fdt, fdt_off_dt_struct(fdt) + delta);
-	fdt_set_off_dt_strings(fdt, fdt_off_dt_strings(fdt) + delta);
-	return 0;
-}
-
-static int _fdt_splice_struct(void *fdt, void *p,
-			      int oldlen, int newlen)
-{
-	int delta = newlen - oldlen;
-	int err;
-
-	if ((err = _fdt_splice(fdt, p, oldlen, newlen)))
-		return err;
-
-	fdt_set_size_dt_struct(fdt, fdt_size_dt_struct(fdt) + delta);
-	fdt_set_off_dt_strings(fdt, fdt_off_dt_strings(fdt) + delta);
-	return 0;
-}
-
-static int _fdt_splice_string(void *fdt, int newlen)
-{
-	void *p = (char *)fdt
-		+ fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);
-	int err;
-
-	if ((err = _fdt_splice(fdt, p, 0, newlen)))
-		return err;
-
-	fdt_set_size_dt_strings(fdt, fdt_size_dt_strings(fdt) + newlen);
-	return 0;
-}
-
-static int _fdt_find_add_string(void *fdt, const char *s)
-{
-	char *strtab = (char *)fdt + fdt_off_dt_strings(fdt);
-	const char *p;
-	char *new;
-	int len = strlen(s) + 1;
-	int err;
-
-	p = _fdt_find_string(strtab, fdt_size_dt_strings(fdt), s);
-	if (p)
-		/* found it */
-		return (p - strtab);
-
-	new = strtab + fdt_size_dt_strings(fdt);
-	err = _fdt_splice_string(fdt, len);
-	if (err)
-		return err;
-
-	memcpy(new, s, len);
-	return (new - strtab);
-}
-
-int fdt_add_mem_rsv(void *fdt, uint64_t address, uint64_t size)
-{
-	struct fdt_reserve_entry *re;
-	int err;
-
-	FDT_RW_CHECK_HEADER(fdt);
-
-	re = _fdt_mem_rsv_w(fdt, fdt_num_mem_rsv(fdt));
-	err = _fdt_splice_mem_rsv(fdt, re, 0, 1);
-	if (err)
-		return err;
-
-	re->address = cpu_to_fdt64(address);
-	re->size = cpu_to_fdt64(size);
-	return 0;
-}
-
-int fdt_del_mem_rsv(void *fdt, int n)
-{
-	struct fdt_reserve_entry *re = _fdt_mem_rsv_w(fdt, n);
-
-	FDT_RW_CHECK_HEADER(fdt);
-
-	if (n >= fdt_num_mem_rsv(fdt))
-		return -FDT_ERR_NOTFOUND;
-
-	return _fdt_splice_mem_rsv(fdt, re, 1, 0);
-}
-
-static int _fdt_resize_property(void *fdt, int nodeoffset, const char *name,
-				int len, struct fdt_property **prop)
-{
-	int oldlen;
-	int err;
-
-	*prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen);
-	if (! (*prop))
-		return oldlen;
-
-	if ((err = _fdt_splice_struct(fdt, (*prop)->data, FDT_TAGALIGN(oldlen),
-				      FDT_TAGALIGN(len))))
-		return err;
-
-	(*prop)->len = cpu_to_fdt32(len);
-	return 0;
-}
-
-static int _fdt_add_property(void *fdt, int nodeoffset, const char *name,
-			     int len, struct fdt_property **prop)
-{
-	int proplen;
-	int nextoffset;
-	int namestroff;
-	int err;
-
-	if ((nextoffset = _fdt_check_node_offset(fdt, nodeoffset)) < 0)
-		return nextoffset;
-
-	namestroff = _fdt_find_add_string(fdt, name);
-	if (namestroff < 0)
-		return namestroff;
-
-	*prop = _fdt_offset_ptr_w(fdt, nextoffset);
-	proplen = sizeof(**prop) + FDT_TAGALIGN(len);
-
-	err = _fdt_splice_struct(fdt, *prop, 0, proplen);
-	if (err)
-		return err;
-
-	(*prop)->tag = cpu_to_fdt32(FDT_PROP);
-	(*prop)->nameoff = cpu_to_fdt32(namestroff);
-	(*prop)->len = cpu_to_fdt32(len);
-	return 0;
-}
-
-int fdt_set_name(void *fdt, int nodeoffset, const char *name)
-{
-	char *namep;
-	int oldlen, newlen;
-	int err;
-
-	FDT_RW_CHECK_HEADER(fdt);
-
-	namep = (char *)(uintptr_t)fdt_get_name(fdt, nodeoffset, &oldlen);
-	if (!namep)
-		return oldlen;
-
-	newlen = strlen(name);
-
-	err = _fdt_splice_struct(fdt, namep, FDT_TAGALIGN(oldlen+1),
-				 FDT_TAGALIGN(newlen+1));
-	if (err)
-		return err;
-
-	memcpy(namep, name, newlen+1);
-	return 0;
-}
-
-int fdt_setprop(void *fdt, int nodeoffset, const char *name,
-		const void *val, int len)
-{
-	struct fdt_property *prop;
-	int err;
-
-	FDT_RW_CHECK_HEADER(fdt);
-
-	err = _fdt_resize_property(fdt, nodeoffset, name, len, &prop);
-	if (err == -FDT_ERR_NOTFOUND)
-		err = _fdt_add_property(fdt, nodeoffset, name, len, &prop);
-	if (err)
-		return err;
-
-	if (len)
-		memcpy(prop->data, val, len);
-	return 0;
-}
-
-int fdt_appendprop(void *fdt, int nodeoffset, const char *name,
-		   const void *val, int len)
-{
-	struct fdt_property *prop;
-	int err, oldlen, newlen;
-
-	FDT_RW_CHECK_HEADER(fdt);
-
-	prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen);
-	if (prop) {
-		newlen = len + oldlen;
-		err = _fdt_splice_struct(fdt, prop->data,
-					 FDT_TAGALIGN(oldlen),
-					 FDT_TAGALIGN(newlen));
-		if (err)
-			return err;
-		prop->len = cpu_to_fdt32(newlen);
-		memcpy(prop->data + oldlen, val, len);
-	} else {
-		err = _fdt_add_property(fdt, nodeoffset, name, len, &prop);
-		if (err)
-			return err;
-		memcpy(prop->data, val, len);
-	}
-	return 0;
-}
-
-int fdt_delprop(void *fdt, int nodeoffset, const char *name)
-{
-	struct fdt_property *prop;
-	int len, proplen;
-
-	FDT_RW_CHECK_HEADER(fdt);
-
-	prop = fdt_get_property_w(fdt, nodeoffset, name, &len);
-	if (! prop)
-		return len;
-
-	proplen = sizeof(*prop) + FDT_TAGALIGN(len);
-	return _fdt_splice_struct(fdt, prop, proplen, 0);
-}
-
-int fdt_add_subnode_namelen(void *fdt, int parentoffset,
-			    const char *name, int namelen)
-{
-	struct fdt_node_header *nh;
-	int offset, nextoffset;
-	int nodelen;
-	int err;
-	uint32_t tag;
-	fdt32_t *endtag;
-
-	FDT_RW_CHECK_HEADER(fdt);
-
-	offset = fdt_subnode_offset_namelen(fdt, parentoffset, name, namelen);
-	if (offset >= 0)
-		return -FDT_ERR_EXISTS;
-	else if (offset != -FDT_ERR_NOTFOUND)
-		return offset;
-
-	/* Try to place the new node after the parent's properties */
-	fdt_next_tag(fdt, parentoffset, &nextoffset); /* skip the BEGIN_NODE */
-	do {
-		offset = nextoffset;
-		tag = fdt_next_tag(fdt, offset, &nextoffset);
-	} while ((tag == FDT_PROP) || (tag == FDT_NOP));
-
-	nh = _fdt_offset_ptr_w(fdt, offset);
-	nodelen = sizeof(*nh) + FDT_TAGALIGN(namelen+1) + FDT_TAGSIZE;
-
-	err = _fdt_splice_struct(fdt, nh, 0, nodelen);
-	if (err)
-		return err;
-
-	nh->tag = cpu_to_fdt32(FDT_BEGIN_NODE);
-	memset(nh->name, 0, FDT_TAGALIGN(namelen+1));
-	memcpy(nh->name, name, namelen);
-	endtag = (fdt32_t *)((char *)nh + nodelen - FDT_TAGSIZE);
-	*endtag = cpu_to_fdt32(FDT_END_NODE);
-
-	return offset;
-}
-
-int fdt_add_subnode(void *fdt, int parentoffset, const char *name)
-{
-	return fdt_add_subnode_namelen(fdt, parentoffset, name, strlen(name));
-}
-
-int fdt_del_node(void *fdt, int nodeoffset)
-{
-	int endoffset;
-
-	FDT_RW_CHECK_HEADER(fdt);
-
-	endoffset = _fdt_node_end_offset(fdt, nodeoffset);
-	if (endoffset < 0)
-		return endoffset;
-
-	return _fdt_splice_struct(fdt, _fdt_offset_ptr_w(fdt, nodeoffset),
-				  endoffset - nodeoffset, 0);
-}
-
-static void _fdt_packblocks(const char *old, char *new,
-			    int mem_rsv_size, int struct_size)
-{
-	int mem_rsv_off, struct_off, strings_off;
-
-	mem_rsv_off = FDT_ALIGN(sizeof(struct fdt_header), 8);
-	struct_off = mem_rsv_off + mem_rsv_size;
-	strings_off = struct_off + struct_size;
-
-	memmove(new + mem_rsv_off, old + fdt_off_mem_rsvmap(old), mem_rsv_size);
-	fdt_set_off_mem_rsvmap(new, mem_rsv_off);
-
-	memmove(new + struct_off, old + fdt_off_dt_struct(old), struct_size);
-	fdt_set_off_dt_struct(new, struct_off);
-	fdt_set_size_dt_struct(new, struct_size);
-
-	memmove(new + strings_off, old + fdt_off_dt_strings(old),
-		fdt_size_dt_strings(old));
-	fdt_set_off_dt_strings(new, strings_off);
-	fdt_set_size_dt_strings(new, fdt_size_dt_strings(old));
-}
-
-int fdt_open_into(const void *fdt, void *buf, int bufsize)
-{
-	int err;
-	int mem_rsv_size, struct_size;
-	int newsize;
-	const char *fdtstart = fdt;
-	const char *fdtend = fdtstart + fdt_totalsize(fdt);
-	char *tmp;
-
-	FDT_CHECK_HEADER(fdt);
-
-	mem_rsv_size = (fdt_num_mem_rsv(fdt)+1)
-		* sizeof(struct fdt_reserve_entry);
-
-	if (fdt_version(fdt) >= 17) {
-		struct_size = fdt_size_dt_struct(fdt);
-	} else {
-		struct_size = 0;
-		while (fdt_next_tag(fdt, struct_size, &struct_size) != FDT_END)
-			;
-		if (struct_size < 0)
-			return struct_size;
-	}
-
-	if (!_fdt_blocks_misordered(fdt, mem_rsv_size, struct_size)) {
-		/* no further work necessary */
-		err = fdt_move(fdt, buf, bufsize);
-		if (err)
-			return err;
-		fdt_set_version(buf, 17);
-		fdt_set_size_dt_struct(buf, struct_size);
-		fdt_set_totalsize(buf, bufsize);
-		return 0;
-	}
-
-	/* Need to reorder */
-	newsize = FDT_ALIGN(sizeof(struct fdt_header), 8) + mem_rsv_size
-		+ struct_size + fdt_size_dt_strings(fdt);
-
-	if (bufsize < newsize)
-		return -FDT_ERR_NOSPACE;
-
-	/* First attempt to build converted tree at beginning of buffer */
-	tmp = buf;
-	/* But if that overlaps with the old tree... */
-	if (((tmp + newsize) > fdtstart) && (tmp < fdtend)) {
-		/* Try right after the old tree instead */
-		tmp = (char *)(uintptr_t)fdtend;
-		if ((tmp + newsize) > ((char *)buf + bufsize))
-			return -FDT_ERR_NOSPACE;
-	}
-
-	_fdt_packblocks(fdt, tmp, mem_rsv_size, struct_size);
-	memmove(buf, tmp, newsize);
-
-	fdt_set_magic(buf, FDT_MAGIC);
-	fdt_set_totalsize(buf, bufsize);
-	fdt_set_version(buf, 17);
-	fdt_set_last_comp_version(buf, 16);
-	fdt_set_boot_cpuid_phys(buf, fdt_boot_cpuid_phys(fdt));
-
-	return 0;
-}
-
-int fdt_pack(void *fdt)
-{
-	int mem_rsv_size;
-
-	FDT_RW_CHECK_HEADER(fdt);
-
-	mem_rsv_size = (fdt_num_mem_rsv(fdt)+1)
-		* sizeof(struct fdt_reserve_entry);
-	_fdt_packblocks(fdt, fdt, mem_rsv_size, fdt_size_dt_struct(fdt));
-	fdt_set_totalsize(fdt, _fdt_data_size(fdt));
-
-	return 0;
-}
diff --git a/contrib/dtc/libfdt/fdt_strerror.c b/contrib/dtc/libfdt/fdt_strerror.c
deleted file mode 100644
index 9677a1887e57..000000000000
--- a/contrib/dtc/libfdt/fdt_strerror.c
+++ /dev/null
@@ -1,102 +0,0 @@
-/*
- * libfdt - Flat Device Tree manipulation
- * Copyright (C) 2006 David Gibson, IBM Corporation.
- *
- * libfdt is dual licensed: you can use it either under the terms of
- * the GPL, or the BSD license, at your option.
- *
- *  a) This library is free software; you can redistribute it and/or
- *     modify it under the terms of the GNU General Public License as
- *     published by the Free Software Foundation; either version 2 of the
- *     License, or (at your option) any later version.
- *
- *     This library is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public
- *     License along with this library; if not, write to the Free
- *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *     MA 02110-1301 USA
- *
- * Alternatively,
- *
- *  b) Redistribution and use in source and binary forms, with or
- *     without modification, are permitted provided that the following
- *     conditions are met:
- *
- *     1. Redistributions of source code must retain the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer.
- *     2. Redistributions in binary form must reproduce the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer in the documentation and/or other materials
- *        provided with the distribution.
- *
- *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-#include "libfdt_env.h"
-
-#include <fdt.h>
-#include <libfdt.h>
-
-#include "libfdt_internal.h"
-
-struct fdt_errtabent {
-	const char *str;
-};
-
-#define FDT_ERRTABENT(val) \
-	[(val)] = { .str = #val, }
-
-static struct fdt_errtabent fdt_errtable[] = {
-	FDT_ERRTABENT(FDT_ERR_NOTFOUND),
-	FDT_ERRTABENT(FDT_ERR_EXISTS),
-	FDT_ERRTABENT(FDT_ERR_NOSPACE),
-
-	FDT_ERRTABENT(FDT_ERR_BADOFFSET),
-	FDT_ERRTABENT(FDT_ERR_BADPATH),
-	FDT_ERRTABENT(FDT_ERR_BADPHANDLE),
-	FDT_ERRTABENT(FDT_ERR_BADSTATE),
-
-	FDT_ERRTABENT(FDT_ERR_TRUNCATED),
-	FDT_ERRTABENT(FDT_ERR_BADMAGIC),
-	FDT_ERRTABENT(FDT_ERR_BADVERSION),
-	FDT_ERRTABENT(FDT_ERR_BADSTRUCTURE),
-	FDT_ERRTABENT(FDT_ERR_BADLAYOUT),
-	FDT_ERRTABENT(FDT_ERR_INTERNAL),
-	FDT_ERRTABENT(FDT_ERR_BADNCELLS),
-	FDT_ERRTABENT(FDT_ERR_BADVALUE),
-	FDT_ERRTABENT(FDT_ERR_BADOVERLAY),
-	FDT_ERRTABENT(FDT_ERR_NOPHANDLES),
-};
-#define FDT_ERRTABSIZE	(sizeof(fdt_errtable) / sizeof(fdt_errtable[0]))
-
-const char *fdt_strerror(int errval)
-{
-	if (errval > 0)
-		return "<valid offset/length>";
-	else if (errval == 0)
-		return "<no error>";
-	else if (errval > -FDT_ERRTABSIZE) {
-		const char *s = fdt_errtable[-errval].str;
-
-		if (s)
-			return s;
-	}
-
-	return "<unknown error>";
-}
diff --git a/contrib/dtc/libfdt/fdt_sw.c b/contrib/dtc/libfdt/fdt_sw.c
deleted file mode 100644
index 6a804859fd0c..000000000000
--- a/contrib/dtc/libfdt/fdt_sw.c
+++ /dev/null
@@ -1,288 +0,0 @@
-/*
- * libfdt - Flat Device Tree manipulation
- * Copyright (C) 2006 David Gibson, IBM Corporation.
- *
- * libfdt is dual licensed: you can use it either under the terms of
- * the GPL, or the BSD license, at your option.
- *
- *  a) This library is free software; you can redistribute it and/or
- *     modify it under the terms of the GNU General Public License as
- *     published by the Free Software Foundation; either version 2 of the
- *     License, or (at your option) any later version.
- *
- *     This library is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public
- *     License along with this library; if not, write to the Free
- *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *     MA 02110-1301 USA
- *
- * Alternatively,
- *
- *  b) Redistribution and use in source and binary forms, with or
- *     without modification, are permitted provided that the following
- *     conditions are met:
- *
- *     1. Redistributions of source code must retain the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer.
- *     2. Redistributions in binary form must reproduce the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer in the documentation and/or other materials
- *        provided with the distribution.
- *
- *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-#include "libfdt_env.h"
-
-#include <fdt.h>
-#include <libfdt.h>
-
-#include "libfdt_internal.h"
-
-static int _fdt_sw_check_header(void *fdt)
-{
-	if (fdt_magic(fdt) != FDT_SW_MAGIC)
-		return -FDT_ERR_BADMAGIC;
-	/* FIXME: should check more details about the header state */
-	return 0;
-}
-
-#define FDT_SW_CHECK_HEADER(fdt) \
-	{ \
-		int err; \
-		if ((err = _fdt_sw_check_header(fdt)) != 0) \
-			return err; \
-	}
-
-static void *_fdt_grab_space(void *fdt, size_t len)
-{
-	int offset = fdt_size_dt_struct(fdt);
-	int spaceleft;
-
-	spaceleft = fdt_totalsize(fdt) - fdt_off_dt_struct(fdt)
-		- fdt_size_dt_strings(fdt);
-
-	if ((offset + len < offset) || (offset + len > spaceleft))
-		return NULL;
-
-	fdt_set_size_dt_struct(fdt, offset + len);
-	return _fdt_offset_ptr_w(fdt, offset);
-}
-
-int fdt_create(void *buf, int bufsize)
-{
-	void *fdt = buf;
-
-	if (bufsize < sizeof(struct fdt_header))
-		return -FDT_ERR_NOSPACE;
-
-	memset(buf, 0, bufsize);
-
-	fdt_set_magic(fdt, FDT_SW_MAGIC);
-	fdt_set_version(fdt, FDT_LAST_SUPPORTED_VERSION);
-	fdt_set_last_comp_version(fdt, FDT_FIRST_SUPPORTED_VERSION);
-	fdt_set_totalsize(fdt,  bufsize);
-
-	fdt_set_off_mem_rsvmap(fdt, FDT_ALIGN(sizeof(struct fdt_header),
-					      sizeof(struct fdt_reserve_entry)));
-	fdt_set_off_dt_struct(fdt, fdt_off_mem_rsvmap(fdt));
-	fdt_set_off_dt_strings(fdt, bufsize);
-
-	return 0;
-}
-
-int fdt_resize(void *fdt, void *buf, int bufsize)
-{
-	size_t headsize, tailsize;
-	char *oldtail, *newtail;
-
-	FDT_SW_CHECK_HEADER(fdt);
-
-	headsize = fdt_off_dt_struct(fdt);
-	tailsize = fdt_size_dt_strings(fdt);
-
-	if ((headsize + tailsize) > bufsize)
-		return -FDT_ERR_NOSPACE;
-
-	oldtail = (char *)fdt + fdt_totalsize(fdt) - tailsize;
-	newtail = (char *)buf + bufsize - tailsize;
-
-	/* Two cases to avoid clobbering data if the old and new
-	 * buffers partially overlap */
-	if (buf <= fdt) {
-		memmove(buf, fdt, headsize);
-		memmove(newtail, oldtail, tailsize);
-	} else {
-		memmove(newtail, oldtail, tailsize);
-		memmove(buf, fdt, headsize);
-	}
-
-	fdt_set_off_dt_strings(buf, bufsize);
-	fdt_set_totalsize(buf, bufsize);
-
-	return 0;
-}
-
-int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size)
-{
-	struct fdt_reserve_entry *re;
-	int offset;
-
-	FDT_SW_CHECK_HEADER(fdt);
-
-	if (fdt_size_dt_struct(fdt))
-		return -FDT_ERR_BADSTATE;
-
-	offset = fdt_off_dt_struct(fdt);
-	if ((offset + sizeof(*re)) > fdt_totalsize(fdt))
-		return -FDT_ERR_NOSPACE;
-
-	re = (struct fdt_reserve_entry *)((char *)fdt + offset);
-	re->address = cpu_to_fdt64(addr);
-	re->size = cpu_to_fdt64(size);
-
-	fdt_set_off_dt_struct(fdt, offset + sizeof(*re));
-
-	return 0;
-}
-
-int fdt_finish_reservemap(void *fdt)
-{
-	return fdt_add_reservemap_entry(fdt, 0, 0);
-}
-
-int fdt_begin_node(void *fdt, const char *name)
-{
-	struct fdt_node_header *nh;
-	int namelen = strlen(name) + 1;
-
-	FDT_SW_CHECK_HEADER(fdt);
-
-	nh = _fdt_grab_space(fdt, sizeof(*nh) + FDT_TAGALIGN(namelen));
-	if (! nh)
-		return -FDT_ERR_NOSPACE;
-
-	nh->tag = cpu_to_fdt32(FDT_BEGIN_NODE);
-	memcpy(nh->name, name, namelen);
-	return 0;
-}
-
-int fdt_end_node(void *fdt)
-{
-	fdt32_t *en;
-
-	FDT_SW_CHECK_HEADER(fdt);
-
-	en = _fdt_grab_space(fdt, FDT_TAGSIZE);
-	if (! en)
-		return -FDT_ERR_NOSPACE;
-
-	*en = cpu_to_fdt32(FDT_END_NODE);
-	return 0;
-}
-
-static int _fdt_find_add_string(void *fdt, const char *s)
-{
-	char *strtab = (char *)fdt + fdt_totalsize(fdt);
-	const char *p;
-	int strtabsize = fdt_size_dt_strings(fdt);
-	int len = strlen(s) + 1;
-	int struct_top, offset;
-
-	p = _fdt_find_string(strtab - strtabsize, strtabsize, s);
-	if (p)
-		return p - strtab;
-
-	/* Add it */
-	offset = -strtabsize - len;
-	struct_top = fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt);
-	if (fdt_totalsize(fdt) + offset < struct_top)
-		return 0; /* no more room :( */
-
-	memcpy(strtab + offset, s, len);
-	fdt_set_size_dt_strings(fdt, strtabsize + len);
-	return offset;
-}
-
-int fdt_property(void *fdt, const char *name, const void *val, int len)
-{
-	struct fdt_property *prop;
-	int nameoff;
-
-	FDT_SW_CHECK_HEADER(fdt);
-
-	nameoff = _fdt_find_add_string(fdt, name);
-	if (nameoff == 0)
-		return -FDT_ERR_NOSPACE;
-
-	prop = _fdt_grab_space(fdt, sizeof(*prop) + FDT_TAGALIGN(len));
-	if (! prop)
-		return -FDT_ERR_NOSPACE;
-
-	prop->tag = cpu_to_fdt32(FDT_PROP);
-	prop->nameoff = cpu_to_fdt32(nameoff);
-	prop->len = cpu_to_fdt32(len);
-	memcpy(prop->data, val, len);
-	return 0;
-}
-
-int fdt_finish(void *fdt)
-{
-	char *p = (char *)fdt;
-	fdt32_t *end;
-	int oldstroffset, newstroffset;
-	uint32_t tag;
-	int offset, nextoffset;
-
-	FDT_SW_CHECK_HEADER(fdt);
-
-	/* Add terminator */
-	end = _fdt_grab_space(fdt, sizeof(*end));
-	if (! end)
-		return -FDT_ERR_NOSPACE;
-	*end = cpu_to_fdt32(FDT_END);
-
-	/* Relocate the string table */
-	oldstroffset = fdt_totalsize(fdt) - fdt_size_dt_strings(fdt);
-	newstroffset = fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt);
-	memmove(p + newstroffset, p + oldstroffset, fdt_size_dt_strings(fdt));
-	fdt_set_off_dt_strings(fdt, newstroffset);
-
-	/* Walk the structure, correcting string offsets */
-	offset = 0;
-	while ((tag = fdt_next_tag(fdt, offset, &nextoffset)) != FDT_END) {
-		if (tag == FDT_PROP) {
-			struct fdt_property *prop =
-				_fdt_offset_ptr_w(fdt, offset);
-			int nameoff;
-
-			nameoff = fdt32_to_cpu(prop->nameoff);
-			nameoff += fdt_size_dt_strings(fdt);
-			prop->nameoff = cpu_to_fdt32(nameoff);
-		}
-		offset = nextoffset;
-	}
-	if (nextoffset < 0)
-		return nextoffset;
-
-	/* Finally, adjust the header */
-	fdt_set_totalsize(fdt, newstroffset + fdt_size_dt_strings(fdt));
-	fdt_set_magic(fdt, FDT_MAGIC);
-	return 0;
-}
diff --git a/contrib/dtc/libfdt/fdt_wip.c b/contrib/dtc/libfdt/fdt_wip.c
deleted file mode 100644
index 6aaab399929c..000000000000
--- a/contrib/dtc/libfdt/fdt_wip.c
+++ /dev/null
@@ -1,139 +0,0 @@
-/*
- * libfdt - Flat Device Tree manipulation
- * Copyright (C) 2006 David Gibson, IBM Corporation.
- *
- * libfdt is dual licensed: you can use it either under the terms of
- * the GPL, or the BSD license, at your option.
- *
- *  a) This library is free software; you can redistribute it and/or
- *     modify it under the terms of the GNU General Public License as
- *     published by the Free Software Foundation; either version 2 of the
- *     License, or (at your option) any later version.
- *
- *     This library is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public
- *     License along with this library; if not, write to the Free
- *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *     MA 02110-1301 USA
- *
- * Alternatively,
- *
- *  b) Redistribution and use in source and binary forms, with or
- *     without modification, are permitted provided that the following
- *     conditions are met:
- *
- *     1. Redistributions of source code must retain the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer.
- *     2. Redistributions in binary form must reproduce the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer in the documentation and/or other materials
- *        provided with the distribution.
- *
- *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-#include "libfdt_env.h"
-
-#include <fdt.h>
-#include <libfdt.h>
-
-#include "libfdt_internal.h"
-
-int fdt_setprop_inplace_namelen_partial(void *fdt, int nodeoffset,
-					const char *name, int namelen,
-					uint32_t idx, const void *val,
-					int len)
-{
-	void *propval;
-	int proplen;
-
-	propval = fdt_getprop_namelen_w(fdt, nodeoffset, name, namelen,
-					&proplen);
-	if (!propval)
-		return proplen;
-
-	if (proplen < (len + idx))
-		return -FDT_ERR_NOSPACE;
-
-	memcpy((char *)propval + idx, val, len);
-	return 0;
-}
-
-int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
-			const void *val, int len)
-{
-	const void *propval;
-	int proplen;
-
-	propval = fdt_getprop(fdt, nodeoffset, name, &proplen);
-	if (! propval)
-		return proplen;
-
-	if (proplen != len)
-		return -FDT_ERR_NOSPACE;
-
-	return fdt_setprop_inplace_namelen_partial(fdt, nodeoffset, name,
-						   strlen(name), 0,
-						   val, len);
-}
-
-static void _fdt_nop_region(void *start, int len)
-{
-	fdt32_t *p;
-
-	for (p = start; (char *)p < ((char *)start + len); p++)
-		*p = cpu_to_fdt32(FDT_NOP);
-}
-
-int fdt_nop_property(void *fdt, int nodeoffset, const char *name)
-{
-	struct fdt_property *prop;
-	int len;
-
-	prop = fdt_get_property_w(fdt, nodeoffset, name, &len);
-	if (! prop)
-		return len;
-
-	_fdt_nop_region(prop, len + sizeof(*prop));
-
-	return 0;
-}
-
-int _fdt_node_end_offset(void *fdt, int offset)
-{
-	int depth = 0;
-
-	while ((offset >= 0) && (depth >= 0))
-		offset = fdt_next_node(fdt, offset, &depth);
-
-	return offset;
-}
-
-int fdt_nop_node(void *fdt, int nodeoffset)
-{
-	int endoffset;
-
-	endoffset = _fdt_node_end_offset(fdt, nodeoffset);
-	if (endoffset < 0)
-		return endoffset;
-
-	_fdt_nop_region(fdt_offset_ptr_w(fdt, nodeoffset, 0),
-			endoffset - nodeoffset);
-	return 0;
-}
diff --git a/contrib/dtc/libfdt/libfdt.h b/contrib/dtc/libfdt/libfdt.h
deleted file mode 100644
index ac42e0459524..000000000000
--- a/contrib/dtc/libfdt/libfdt.h
+++ /dev/null
@@ -1,1833 +0,0 @@
-#ifndef _LIBFDT_H
-#define _LIBFDT_H
-/*
- * libfdt - Flat Device Tree manipulation
- * Copyright (C) 2006 David Gibson, IBM Corporation.
- *
- * libfdt is dual licensed: you can use it either under the terms of
- * the GPL, or the BSD license, at your option.
- *
- *  a) This library is free software; you can redistribute it and/or
- *     modify it under the terms of the GNU General Public License as
- *     published by the Free Software Foundation; either version 2 of the
- *     License, or (at your option) any later version.
- *
- *     This library is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public
- *     License along with this library; if not, write to the Free
- *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *     MA 02110-1301 USA
- *
- * Alternatively,
- *
- *  b) Redistribution and use in source and binary forms, with or
- *     without modification, are permitted provided that the following
- *     conditions are met:
- *
- *     1. Redistributions of source code must retain the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer.
- *     2. Redistributions in binary form must reproduce the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer in the documentation and/or other materials
- *        provided with the distribution.
- *
- *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <libfdt_env.h>
-#include <fdt.h>
-
-#define FDT_FIRST_SUPPORTED_VERSION	0x10
-#define FDT_LAST_SUPPORTED_VERSION	0x11
-
-/* Error codes: informative error codes */
-#define FDT_ERR_NOTFOUND	1
-	/* FDT_ERR_NOTFOUND: The requested node or property does not exist */
-#define FDT_ERR_EXISTS		2
-	/* FDT_ERR_EXISTS: Attempted to create a node or property which
-	 * already exists */
-#define FDT_ERR_NOSPACE		3
-	/* FDT_ERR_NOSPACE: Operation needed to expand the device
-	 * tree, but its buffer did not have sufficient space to
-	 * contain the expanded tree. Use fdt_open_into() to move the
-	 * device tree to a buffer with more space. */
-
-/* Error codes: codes for bad parameters */
-#define FDT_ERR_BADOFFSET	4
-	/* FDT_ERR_BADOFFSET: Function was passed a structure block
-	 * offset which is out-of-bounds, or which points to an
-	 * unsuitable part of the structure for the operation. */
-#define FDT_ERR_BADPATH		5
-	/* FDT_ERR_BADPATH: Function was passed a badly formatted path
-	 * (e.g. missing a leading / for a function which requires an
-	 * absolute path) */
-#define FDT_ERR_BADPHANDLE	6
-	/* FDT_ERR_BADPHANDLE: Function was passed an invalid phandle.
-	 * This can be caused either by an invalid phandle property
-	 * length, or the phandle value was either 0 or -1, which are
-	 * not permitted. */
-#define FDT_ERR_BADSTATE	7
-	/* FDT_ERR_BADSTATE: Function was passed an incomplete device
-	 * tree created by the sequential-write functions, which is
-	 * not sufficiently complete for the requested operation. */
-
-/* Error codes: codes for bad device tree blobs */
-#define FDT_ERR_TRUNCATED	8
-	/* FDT_ERR_TRUNCATED: Structure block of the given device tree
-	 * ends without an FDT_END tag. */
-#define FDT_ERR_BADMAGIC	9
-	/* FDT_ERR_BADMAGIC: Given "device tree" appears not to be a
-	 * device tree at all - it is missing the flattened device
-	 * tree magic number. */
-#define FDT_ERR_BADVERSION	10
-	/* FDT_ERR_BADVERSION: Given device tree has a version which
-	 * can't be handled by the requested operation.  For
-	 * read-write functions, this may mean that fdt_open_into() is
-	 * required to convert the tree to the expected version. */
-#define FDT_ERR_BADSTRUCTURE	11
-	/* FDT_ERR_BADSTRUCTURE: Given device tree has a corrupt
-	 * structure block or other serious error (e.g. misnested
-	 * nodes, or subnodes preceding properties). */
-#define FDT_ERR_BADLAYOUT	12
-	/* FDT_ERR_BADLAYOUT: For read-write functions, the given
-	 * device tree has it's sub-blocks in an order that the
-	 * function can't handle (memory reserve map, then structure,
-	 * then strings).  Use fdt_open_into() to reorganize the tree
-	 * into a form suitable for the read-write operations. */
-
-/* "Can't happen" error indicating a bug in libfdt */
-#define FDT_ERR_INTERNAL	13
-	/* FDT_ERR_INTERNAL: libfdt has failed an internal assertion.
-	 * Should never be returned, if it is, it indicates a bug in
-	 * libfdt itself. */
-
-/* Errors in device tree content */
-#define FDT_ERR_BADNCELLS	14
-	/* FDT_ERR_BADNCELLS: Device tree has a #address-cells, #size-cells
-	 * or similar property with a bad format or value */
-
-#define FDT_ERR_BADVALUE	15
-	/* FDT_ERR_BADVALUE: Device tree has a property with an unexpected
-	 * value. For example: a property expected to contain a string list
-	 * is not NUL-terminated within the length of its value. */
-
-#define FDT_ERR_BADOVERLAY	16
-	/* FDT_ERR_BADOVERLAY: The device tree overlay, while
-	 * correctly structured, cannot be applied due to some
-	 * unexpected or missing value, property or node. */
-
-#define FDT_ERR_NOPHANDLES	17
-	/* FDT_ERR_NOPHANDLES: The device tree doesn't have any
-	 * phandle available anymore without causing an overflow */
-
-#define FDT_ERR_MAX		17
-
-/**********************************************************************/
-/* Low-level functions (you probably don't need these)                */
-/**********************************************************************/
-
-const void *fdt_offset_ptr(const void *fdt, int offset, unsigned int checklen);
-static inline void *fdt_offset_ptr_w(void *fdt, int offset, int checklen)
-{
-	return (void *)(uintptr_t)fdt_offset_ptr(fdt, offset, checklen);
-}
-
-uint32_t fdt_next_tag(const void *fdt, int offset, int *nextoffset);
-
-/**********************************************************************/
-/* Traversal functions                                                */
-/**********************************************************************/
-
-int fdt_next_node(const void *fdt, int offset, int *depth);
-
-/**
- * fdt_first_subnode() - get offset of first direct subnode
- *
- * @fdt:	FDT blob
- * @offset:	Offset of node to check
- * @return offset of first subnode, or -FDT_ERR_NOTFOUND if there is none
- */
-int fdt_first_subnode(const void *fdt, int offset);
-
-/**
- * fdt_next_subnode() - get offset of next direct subnode
- *
- * After first calling fdt_first_subnode(), call this function repeatedly to
- * get direct subnodes of a parent node.
- *
- * @fdt:	FDT blob
- * @offset:	Offset of previous subnode
- * @return offset of next subnode, or -FDT_ERR_NOTFOUND if there are no more
- * subnodes
- */
-int fdt_next_subnode(const void *fdt, int offset);
-
-/**
- * fdt_for_each_subnode - iterate over all subnodes of a parent
- *
- * @node:	child node (int, lvalue)
- * @fdt:	FDT blob (const void *)
- * @parent:	parent node (int)
- *
- * This is actually a wrapper around a for loop and would be used like so:
- *
- *	fdt_for_each_subnode(node, fdt, parent) {
- *		Use node
- *		...
- *	}
- *
- *	if ((node < 0) && (node != -FDT_ERR_NOT_FOUND)) {
- *		Error handling
- *	}
- *
- * Note that this is implemented as a macro and @node is used as
- * iterator in the loop. The parent variable be constant or even a
- * literal.
- *
- */
-#define fdt_for_each_subnode(node, fdt, parent)		\
-	for (node = fdt_first_subnode(fdt, parent);	\
-	     node >= 0;					\
-	     node = fdt_next_subnode(fdt, node))
-
-/**********************************************************************/
-/* General functions                                                  */
-/**********************************************************************/
-
-#define fdt_get_header(fdt, field) \
-	(fdt32_to_cpu(((const struct fdt_header *)(fdt))->field))
-#define fdt_magic(fdt)			(fdt_get_header(fdt, magic))
-#define fdt_totalsize(fdt)		(fdt_get_header(fdt, totalsize))
-#define fdt_off_dt_struct(fdt)		(fdt_get_header(fdt, off_dt_struct))
-#define fdt_off_dt_strings(fdt)		(fdt_get_header(fdt, off_dt_strings))
-#define fdt_off_mem_rsvmap(fdt)		(fdt_get_header(fdt, off_mem_rsvmap))
-#define fdt_version(fdt)		(fdt_get_header(fdt, version))
-#define fdt_last_comp_version(fdt)	(fdt_get_header(fdt, last_comp_version))
-#define fdt_boot_cpuid_phys(fdt)	(fdt_get_header(fdt, boot_cpuid_phys))
-#define fdt_size_dt_strings(fdt)	(fdt_get_header(fdt, size_dt_strings))
-#define fdt_size_dt_struct(fdt)		(fdt_get_header(fdt, size_dt_struct))
-
-#define __fdt_set_hdr(name) \
-	static inline void fdt_set_##name(void *fdt, uint32_t val) \
-	{ \
-		struct fdt_header *fdth = (struct fdt_header *)fdt; \
-		fdth->name = cpu_to_fdt32(val); \
-	}
-__fdt_set_hdr(magic);
-__fdt_set_hdr(totalsize);
-__fdt_set_hdr(off_dt_struct);
-__fdt_set_hdr(off_dt_strings);
-__fdt_set_hdr(off_mem_rsvmap);
-__fdt_set_hdr(version);
-__fdt_set_hdr(last_comp_version);
-__fdt_set_hdr(boot_cpuid_phys);
-__fdt_set_hdr(size_dt_strings);
-__fdt_set_hdr(size_dt_struct);
-#undef __fdt_set_hdr
-
-/**
- * fdt_check_header - sanity check a device tree or possible device tree
- * @fdt: pointer to data which might be a flattened device tree
- *
- * fdt_check_header() checks that the given buffer contains what
- * appears to be a flattened device tree with sane information in its
- * header.
- *
- * returns:
- *     0, if the buffer appears to contain a valid device tree
- *     -FDT_ERR_BADMAGIC,
- *     -FDT_ERR_BADVERSION,
- *     -FDT_ERR_BADSTATE, standard meanings, as above
- */
-int fdt_check_header(const void *fdt);
-
-/**
- * fdt_move - move a device tree around in memory
- * @fdt: pointer to the device tree to move
- * @buf: pointer to memory where the device is to be moved
- * @bufsize: size of the memory space at buf
- *
- * fdt_move() relocates, if possible, the device tree blob located at
- * fdt to the buffer at buf of size bufsize.  The buffer may overlap
- * with the existing device tree blob at fdt.  Therefore,
- *     fdt_move(fdt, fdt, fdt_totalsize(fdt))
- * should always succeed.
- *
- * returns:
- *     0, on success
- *     -FDT_ERR_NOSPACE, bufsize is insufficient to contain the device tree
- *     -FDT_ERR_BADMAGIC,
- *     -FDT_ERR_BADVERSION,
- *     -FDT_ERR_BADSTATE, standard meanings
- */
-int fdt_move(const void *fdt, void *buf, int bufsize);
-
-/**********************************************************************/
-/* Read-only functions                                                */
-/**********************************************************************/
-
-/**
- * fdt_string - retrieve a string from the strings block of a device tree
- * @fdt: pointer to the device tree blob
- * @stroffset: offset of the string within the strings block (native endian)
- *
- * fdt_string() retrieves a pointer to a single string from the
- * strings block of the device tree blob at fdt.
- *
- * returns:
- *     a pointer to the string, on success
- *     NULL, if stroffset is out of bounds
- */
-const char *fdt_string(const void *fdt, int stroffset);
-
-/**
- * fdt_get_max_phandle - retrieves the highest phandle in a tree
- * @fdt: pointer to the device tree blob
- *
- * fdt_get_max_phandle retrieves the highest phandle in the given
- * device tree. This will ignore badly formatted phandles, or phandles
- * with a value of 0 or -1.
- *
- * returns:
- *      the highest phandle on success
- *      0, if no phandle was found in the device tree
- *      -1, if an error occurred
- */
-uint32_t fdt_get_max_phandle(const void *fdt);
-
-/**
- * fdt_num_mem_rsv - retrieve the number of memory reserve map entries
- * @fdt: pointer to the device tree blob
- *
- * Returns the number of entries in the device tree blob's memory
- * reservation map.  This does not include the terminating 0,0 entry
- * or any other (0,0) entries reserved for expansion.
- *
- * returns:
- *     the number of entries
- */
-int fdt_num_mem_rsv(const void *fdt);
-
-/**
- * fdt_get_mem_rsv - retrieve one memory reserve map entry
- * @fdt: pointer to the device tree blob
- * @address, @size: pointers to 64-bit variables
- *
- * On success, *address and *size will contain the address and size of
- * the n-th reserve map entry from the device tree blob, in
- * native-endian format.
- *
- * returns:
- *     0, on success
- *     -FDT_ERR_BADMAGIC,
- *     -FDT_ERR_BADVERSION,
- *     -FDT_ERR_BADSTATE, standard meanings
- */
-int fdt_get_mem_rsv(const void *fdt, int n, uint64_t *address, uint64_t *size);
-
-/**
- * fdt_subnode_offset_namelen - find a subnode based on substring
- * @fdt: pointer to the device tree blob
- * @parentoffset: structure block offset of a node
- * @name: name of the subnode to locate
- * @namelen: number of characters of name to consider
- *
- * Identical to fdt_subnode_offset(), but only examine the first
- * namelen characters of name for matching the subnode name.  This is
- * useful for finding subnodes based on a portion of a larger string,
- * such as a full path.
- */
-int fdt_subnode_offset_namelen(const void *fdt, int parentoffset,
-			       const char *name, int namelen);
-/**
- * fdt_subnode_offset - find a subnode of a given node
- * @fdt: pointer to the device tree blob
- * @parentoffset: structure block offset of a node
- * @name: name of the subnode to locate
- *
- * fdt_subnode_offset() finds a subnode of the node at structure block
- * offset parentoffset with the given name.  name may include a unit
- * address, in which case fdt_subnode_offset() will find the subnode
- * with that unit address, or the unit address may be omitted, in
- * which case fdt_subnode_offset() will find an arbitrary subnode
- * whose name excluding unit address matches the given name.
- *
- * returns:
- *	structure block offset of the requested subnode (>=0), on success
- *	-FDT_ERR_NOTFOUND, if the requested subnode does not exist
- *	-FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE
- *		tag
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings.
- */
-int fdt_subnode_offset(const void *fdt, int parentoffset, const char *name);
-
-/**
- * fdt_path_offset_namelen - find a tree node by its full path
- * @fdt: pointer to the device tree blob
- * @path: full path of the node to locate
- * @namelen: number of characters of path to consider
- *
- * Identical to fdt_path_offset(), but only consider the first namelen
- * characters of path as the path name.
- */
-int fdt_path_offset_namelen(const void *fdt, const char *path, int namelen);
-
-/**
- * fdt_path_offset - find a tree node by its full path
- * @fdt: pointer to the device tree blob
- * @path: full path of the node to locate
- *
- * fdt_path_offset() finds a node of a given path in the device tree.
- * Each path component may omit the unit address portion, but the
- * results of this are undefined if any such path component is
- * ambiguous (that is if there are multiple nodes at the relevant
- * level matching the given component, differentiated only by unit
- * address).
- *
- * returns:
- *	structure block offset of the node with the requested path (>=0), on
- *		success
- *	-FDT_ERR_BADPATH, given path does not begin with '/' or is invalid
- *	-FDT_ERR_NOTFOUND, if the requested node does not exist
- *      -FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings.
- */
-int fdt_path_offset(const void *fdt, const char *path);
-
-/**
- * fdt_get_name - retrieve the name of a given node
- * @fdt: pointer to the device tree blob
- * @nodeoffset: structure block offset of the starting node
- * @lenp: pointer to an integer variable (will be overwritten) or NULL
- *
- * fdt_get_name() retrieves the name (including unit address) of the
- * device tree node at structure block offset nodeoffset.  If lenp is
- * non-NULL, the length of this name is also returned, in the integer
- * pointed to by lenp.
- *
- * returns:
- *	pointer to the node's name, on success
- *		If lenp is non-NULL, *lenp contains the length of that name
- *			(>=0)
- *	NULL, on error
- *		if lenp is non-NULL *lenp contains an error code (<0):
- *		-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE
- *			tag
- *		-FDT_ERR_BADMAGIC,
- *		-FDT_ERR_BADVERSION,
- *		-FDT_ERR_BADSTATE, standard meanings
- */
-const char *fdt_get_name(const void *fdt, int nodeoffset, int *lenp);
-
-/**
- * fdt_first_property_offset - find the offset of a node's first property
- * @fdt: pointer to the device tree blob
- * @nodeoffset: structure block offset of a node
- *
- * fdt_first_property_offset() finds the first property of the node at
- * the given structure block offset.
- *
- * returns:
- *	structure block offset of the property (>=0), on success
- *	-FDT_ERR_NOTFOUND, if the requested node has no properties
- *	-FDT_ERR_BADOFFSET, if nodeoffset did not point to an FDT_BEGIN_NODE tag
- *      -FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings.
- */
-int fdt_first_property_offset(const void *fdt, int nodeoffset);
-
-/**
- * fdt_next_property_offset - step through a node's properties
- * @fdt: pointer to the device tree blob
- * @offset: structure block offset of a property
- *
- * fdt_next_property_offset() finds the property immediately after the
- * one at the given structure block offset.  This will be a property
- * of the same node as the given property.
- *
- * returns:
- *	structure block offset of the next property (>=0), on success
- *	-FDT_ERR_NOTFOUND, if the given property is the last in its node
- *	-FDT_ERR_BADOFFSET, if nodeoffset did not point to an FDT_PROP tag
- *      -FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings.
- */
-int fdt_next_property_offset(const void *fdt, int offset);
-
-/**
- * fdt_for_each_property_offset - iterate over all properties of a node
- *
- * @property_offset:	property offset (int, lvalue)
- * @fdt:		FDT blob (const void *)
- * @node:		node offset (int)
- *
- * This is actually a wrapper around a for loop and would be used like so:
- *
- *	fdt_for_each_property_offset(property, fdt, node) {
- *		Use property
- *		...
- *	}
- *
- *	if ((property < 0) && (property != -FDT_ERR_NOT_FOUND)) {
- *		Error handling
- *	}
- *
- * Note that this is implemented as a macro and property is used as
- * iterator in the loop. The node variable can be constant or even a
- * literal.
- */
-#define fdt_for_each_property_offset(property, fdt, node)	\
-	for (property = fdt_first_property_offset(fdt, node);	\
-	     property >= 0;					\
-	     property = fdt_next_property_offset(fdt, property))
-
-/**
- * fdt_get_property_by_offset - retrieve the property at a given offset
- * @fdt: pointer to the device tree blob
- * @offset: offset of the property to retrieve
- * @lenp: pointer to an integer variable (will be overwritten) or NULL
- *
- * fdt_get_property_by_offset() retrieves a pointer to the
- * fdt_property structure within the device tree blob at the given
- * offset.  If lenp is non-NULL, the length of the property value is
- * also returned, in the integer pointed to by lenp.
- *
- * returns:
- *	pointer to the structure representing the property
- *		if lenp is non-NULL, *lenp contains the length of the property
- *		value (>=0)
- *	NULL, on error
- *		if lenp is non-NULL, *lenp contains an error code (<0):
- *		-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_PROP tag
- *		-FDT_ERR_BADMAGIC,
- *		-FDT_ERR_BADVERSION,
- *		-FDT_ERR_BADSTATE,
- *		-FDT_ERR_BADSTRUCTURE,
- *		-FDT_ERR_TRUNCATED, standard meanings
- */
-const struct fdt_property *fdt_get_property_by_offset(const void *fdt,
-						      int offset,
-						      int *lenp);
-
-/**
- * fdt_get_property_namelen - find a property based on substring
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to find
- * @name: name of the property to find
- * @namelen: number of characters of name to consider
- * @lenp: pointer to an integer variable (will be overwritten) or NULL
- *
- * Identical to fdt_get_property(), but only examine the first namelen
- * characters of name for matching the property name.
- */
-const struct fdt_property *fdt_get_property_namelen(const void *fdt,
-						    int nodeoffset,
-						    const char *name,
-						    int namelen, int *lenp);
-
-/**
- * fdt_get_property - find a given property in a given node
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to find
- * @name: name of the property to find
- * @lenp: pointer to an integer variable (will be overwritten) or NULL
- *
- * fdt_get_property() retrieves a pointer to the fdt_property
- * structure within the device tree blob corresponding to the property
- * named 'name' of the node at offset nodeoffset.  If lenp is
- * non-NULL, the length of the property value is also returned, in the
- * integer pointed to by lenp.
- *
- * returns:
- *	pointer to the structure representing the property
- *		if lenp is non-NULL, *lenp contains the length of the property
- *		value (>=0)
- *	NULL, on error
- *		if lenp is non-NULL, *lenp contains an error code (<0):
- *		-FDT_ERR_NOTFOUND, node does not have named property
- *		-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE
- *			tag
- *		-FDT_ERR_BADMAGIC,
- *		-FDT_ERR_BADVERSION,
- *		-FDT_ERR_BADSTATE,
- *		-FDT_ERR_BADSTRUCTURE,
- *		-FDT_ERR_TRUNCATED, standard meanings
- */
-const struct fdt_property *fdt_get_property(const void *fdt, int nodeoffset,
-					    const char *name, int *lenp);
-static inline struct fdt_property *fdt_get_property_w(void *fdt, int nodeoffset,
-						      const char *name,
-						      int *lenp)
-{
-	return (struct fdt_property *)(uintptr_t)
-		fdt_get_property(fdt, nodeoffset, name, lenp);
-}
-
-/**
- * fdt_getprop_by_offset - retrieve the value of a property at a given offset
- * @fdt: pointer to the device tree blob
- * @ffset: offset of the property to read
- * @namep: pointer to a string variable (will be overwritten) or NULL
- * @lenp: pointer to an integer variable (will be overwritten) or NULL
- *
- * fdt_getprop_by_offset() retrieves a pointer to the value of the
- * property at structure block offset 'offset' (this will be a pointer
- * to within the device blob itself, not a copy of the value).  If
- * lenp is non-NULL, the length of the property value is also
- * returned, in the integer pointed to by lenp.  If namep is non-NULL,
- * the property's namne will also be returned in the char * pointed to
- * by namep (this will be a pointer to within the device tree's string
- * block, not a new copy of the name).
- *
- * returns:
- *	pointer to the property's value
- *		if lenp is non-NULL, *lenp contains the length of the property
- *		value (>=0)
- *		if namep is non-NULL *namep contiains a pointer to the property
- *		name.
- *	NULL, on error
- *		if lenp is non-NULL, *lenp contains an error code (<0):
- *		-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_PROP tag
- *		-FDT_ERR_BADMAGIC,
- *		-FDT_ERR_BADVERSION,
- *		-FDT_ERR_BADSTATE,
- *		-FDT_ERR_BADSTRUCTURE,
- *		-FDT_ERR_TRUNCATED, standard meanings
- */
-const void *fdt_getprop_by_offset(const void *fdt, int offset,
-				  const char **namep, int *lenp);
-
-/**
- * fdt_getprop_namelen - get property value based on substring
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to find
- * @name: name of the property to find
- * @namelen: number of characters of name to consider
- * @lenp: pointer to an integer variable (will be overwritten) or NULL
- *
- * Identical to fdt_getprop(), but only examine the first namelen
- * characters of name for matching the property name.
- */
-const void *fdt_getprop_namelen(const void *fdt, int nodeoffset,
-				const char *name, int namelen, int *lenp);
-static inline void *fdt_getprop_namelen_w(void *fdt, int nodeoffset,
-					  const char *name, int namelen,
-					  int *lenp)
-{
-	return (void *)(uintptr_t)fdt_getprop_namelen(fdt, nodeoffset, name,
-						      namelen, lenp);
-}
-
-/**
- * fdt_getprop - retrieve the value of a given property
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to find
- * @name: name of the property to find
- * @lenp: pointer to an integer variable (will be overwritten) or NULL
- *
- * fdt_getprop() retrieves a pointer to the value of the property
- * named 'name' of the node at offset nodeoffset (this will be a
- * pointer to within the device blob itself, not a copy of the value).
- * If lenp is non-NULL, the length of the property value is also
- * returned, in the integer pointed to by lenp.
- *
- * returns:
- *	pointer to the property's value
- *		if lenp is non-NULL, *lenp contains the length of the property
- *		value (>=0)
- *	NULL, on error
- *		if lenp is non-NULL, *lenp contains an error code (<0):
- *		-FDT_ERR_NOTFOUND, node does not have named property
- *		-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE
- *			tag
- *		-FDT_ERR_BADMAGIC,
- *		-FDT_ERR_BADVERSION,
- *		-FDT_ERR_BADSTATE,
- *		-FDT_ERR_BADSTRUCTURE,
- *		-FDT_ERR_TRUNCATED, standard meanings
- */
-const void *fdt_getprop(const void *fdt, int nodeoffset,
-			const char *name, int *lenp);
-static inline void *fdt_getprop_w(void *fdt, int nodeoffset,
-				  const char *name, int *lenp)
-{
-	return (void *)(uintptr_t)fdt_getprop(fdt, nodeoffset, name, lenp);
-}
-
-/**
- * fdt_get_phandle - retrieve the phandle of a given node
- * @fdt: pointer to the device tree blob
- * @nodeoffset: structure block offset of the node
- *
- * fdt_get_phandle() retrieves the phandle of the device tree node at
- * structure block offset nodeoffset.
- *
- * returns:
- *	the phandle of the node at nodeoffset, on success (!= 0, != -1)
- *	0, if the node has no phandle, or another error occurs
- */
-uint32_t fdt_get_phandle(const void *fdt, int nodeoffset);
-
-/**
- * fdt_get_alias_namelen - get alias based on substring
- * @fdt: pointer to the device tree blob
- * @name: name of the alias th look up
- * @namelen: number of characters of name to consider
- *
- * Identical to fdt_get_alias(), but only examine the first namelen
- * characters of name for matching the alias name.
- */
-const char *fdt_get_alias_namelen(const void *fdt,
-				  const char *name, int namelen);
-
-/**
- * fdt_get_alias - retrieve the path referenced by a given alias
- * @fdt: pointer to the device tree blob
- * @name: name of the alias th look up
- *
- * fdt_get_alias() retrieves the value of a given alias.  That is, the
- * value of the property named 'name' in the node /aliases.
- *
- * returns:
- *	a pointer to the expansion of the alias named 'name', if it exists
- *	NULL, if the given alias or the /aliases node does not exist
- */
-const char *fdt_get_alias(const void *fdt, const char *name);
-
-/**
- * fdt_get_path - determine the full path of a node
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose path to find
- * @buf: character buffer to contain the returned path (will be overwritten)
- * @buflen: size of the character buffer at buf
- *
- * fdt_get_path() computes the full path of the node at offset
- * nodeoffset, and records that path in the buffer at buf.
- *
- * NOTE: This function is expensive, as it must scan the device tree
- * structure from the start to nodeoffset.
- *
- * returns:
- *	0, on success
- *		buf contains the absolute path of the node at
- *		nodeoffset, as a NUL-terminated string.
- *	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
- *	-FDT_ERR_NOSPACE, the path of the given node is longer than (bufsize-1)
- *		characters and will not fit in the given buffer.
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE, standard meanings
- */
-int fdt_get_path(const void *fdt, int nodeoffset, char *buf, int buflen);
-
-/**
- * fdt_supernode_atdepth_offset - find a specific ancestor of a node
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose parent to find
- * @supernodedepth: depth of the ancestor to find
- * @nodedepth: pointer to an integer variable (will be overwritten) or NULL
- *
- * fdt_supernode_atdepth_offset() finds an ancestor of the given node
- * at a specific depth from the root (where the root itself has depth
- * 0, its immediate subnodes depth 1 and so forth).  So
- *	fdt_supernode_atdepth_offset(fdt, nodeoffset, 0, NULL);
- * will always return 0, the offset of the root node.  If the node at
- * nodeoffset has depth D, then:
- *	fdt_supernode_atdepth_offset(fdt, nodeoffset, D, NULL);
- * will return nodeoffset itself.
- *
- * NOTE: This function is expensive, as it must scan the device tree
- * structure from the start to nodeoffset.
- *
- * returns:
- *	structure block offset of the node at node offset's ancestor
- *		of depth supernodedepth (>=0), on success
- *	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
- *	-FDT_ERR_NOTFOUND, supernodedepth was greater than the depth of
- *		nodeoffset
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE, standard meanings
- */
-int fdt_supernode_atdepth_offset(const void *fdt, int nodeoffset,
-				 int supernodedepth, int *nodedepth);
-
-/**
- * fdt_node_depth - find the depth of a given node
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose parent to find
- *
- * fdt_node_depth() finds the depth of a given node.  The root node
- * has depth 0, its immediate subnodes depth 1 and so forth.
- *
- * NOTE: This function is expensive, as it must scan the device tree
- * structure from the start to nodeoffset.
- *
- * returns:
- *	depth of the node at nodeoffset (>=0), on success
- *	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE, standard meanings
- */
-int fdt_node_depth(const void *fdt, int nodeoffset);
-
-/**
- * fdt_parent_offset - find the parent of a given node
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose parent to find
- *
- * fdt_parent_offset() locates the parent node of a given node (that
- * is, it finds the offset of the node which contains the node at
- * nodeoffset as a subnode).
- *
- * NOTE: This function is expensive, as it must scan the device tree
- * structure from the start to nodeoffset, *twice*.
- *
- * returns:
- *	structure block offset of the parent of the node at nodeoffset
- *		(>=0), on success
- *	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE, standard meanings
- */
-int fdt_parent_offset(const void *fdt, int nodeoffset);
-
-/**
- * fdt_node_offset_by_prop_value - find nodes with a given property value
- * @fdt: pointer to the device tree blob
- * @startoffset: only find nodes after this offset
- * @propname: property name to check
- * @propval: property value to search for
- * @proplen: length of the value in propval
- *
- * fdt_node_offset_by_prop_value() returns the offset of the first
- * node after startoffset, which has a property named propname whose
- * value is of length proplen and has value equal to propval; or if
- * startoffset is -1, the very first such node in the tree.
- *
- * To iterate through all nodes matching the criterion, the following
- * idiom can be used:
- *	offset = fdt_node_offset_by_prop_value(fdt, -1, propname,
- *					       propval, proplen);
- *	while (offset != -FDT_ERR_NOTFOUND) {
- *		// other code here
- *		offset = fdt_node_offset_by_prop_value(fdt, offset, propname,
- *						       propval, proplen);
- *	}
- *
- * Note the -1 in the first call to the function, if 0 is used here
- * instead, the function will never locate the root node, even if it
- * matches the criterion.
- *
- * returns:
- *	structure block offset of the located node (>= 0, >startoffset),
- *		 on success
- *	-FDT_ERR_NOTFOUND, no node matching the criterion exists in the
- *		tree after startoffset
- *	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE, standard meanings
- */
-int fdt_node_offset_by_prop_value(const void *fdt, int startoffset,
-				  const char *propname,
-				  const void *propval, int proplen);
-
-/**
- * fdt_node_offset_by_phandle - find the node with a given phandle
- * @fdt: pointer to the device tree blob
- * @phandle: phandle value
- *
- * fdt_node_offset_by_phandle() returns the offset of the node
- * which has the given phandle value.  If there is more than one node
- * in the tree with the given phandle (an invalid tree), results are
- * undefined.
- *
- * returns:
- *	structure block offset of the located node (>= 0), on success
- *	-FDT_ERR_NOTFOUND, no node with that phandle exists
- *	-FDT_ERR_BADPHANDLE, given phandle value was invalid (0 or -1)
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE, standard meanings
- */
-int fdt_node_offset_by_phandle(const void *fdt, uint32_t phandle);
-
-/**
- * fdt_node_check_compatible: check a node's compatible property
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of a tree node
- * @compatible: string to match against
- *
- *
- * fdt_node_check_compatible() returns 0 if the given node contains a
- * 'compatible' property with the given string as one of its elements,
- * it returns non-zero otherwise, or on error.
- *
- * returns:
- *	0, if the node has a 'compatible' property listing the given string
- *	1, if the node has a 'compatible' property, but it does not list
- *		the given string
- *	-FDT_ERR_NOTFOUND, if the given node has no 'compatible' property
- *	-FDT_ERR_BADOFFSET, if nodeoffset does not refer to a BEGIN_NODE tag
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE, standard meanings
- */
-int fdt_node_check_compatible(const void *fdt, int nodeoffset,
-			      const char *compatible);
-
-/**
- * fdt_node_offset_by_compatible - find nodes with a given 'compatible' value
- * @fdt: pointer to the device tree blob
- * @startoffset: only find nodes after this offset
- * @compatible: 'compatible' string to match against
- *
- * fdt_node_offset_by_compatible() returns the offset of the first
- * node after startoffset, which has a 'compatible' property which
- * lists the given compatible string; or if startoffset is -1, the
- * very first such node in the tree.
- *
- * To iterate through all nodes matching the criterion, the following
- * idiom can be used:
- *	offset = fdt_node_offset_by_compatible(fdt, -1, compatible);
- *	while (offset != -FDT_ERR_NOTFOUND) {
- *		// other code here
- *		offset = fdt_node_offset_by_compatible(fdt, offset, compatible);
- *	}
- *
- * Note the -1 in the first call to the function, if 0 is used here
- * instead, the function will never locate the root node, even if it
- * matches the criterion.
- *
- * returns:
- *	structure block offset of the located node (>= 0, >startoffset),
- *		 on success
- *	-FDT_ERR_NOTFOUND, no node matching the criterion exists in the
- *		tree after startoffset
- *	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE, standard meanings
- */
-int fdt_node_offset_by_compatible(const void *fdt, int startoffset,
-				  const char *compatible);
-
-/**
- * fdt_stringlist_contains - check a string list property for a string
- * @strlist: Property containing a list of strings to check
- * @listlen: Length of property
- * @str: String to search for
- *
- * This is a utility function provided for convenience. The list contains
- * one or more strings, each terminated by \0, as is found in a device tree
- * "compatible" property.
- *
- * @return: 1 if the string is found in the list, 0 not found, or invalid list
- */
-int fdt_stringlist_contains(const char *strlist, int listlen, const char *str);
-
-/**
- * fdt_stringlist_count - count the number of strings in a string list
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of a tree node
- * @property: name of the property containing the string list
- * @return:
- *   the number of strings in the given property
- *   -FDT_ERR_BADVALUE if the property value is not NUL-terminated
- *   -FDT_ERR_NOTFOUND if the property does not exist
- */
-int fdt_stringlist_count(const void *fdt, int nodeoffset, const char *property);
-
-/**
- * fdt_stringlist_search - find a string in a string list and return its index
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of a tree node
- * @property: name of the property containing the string list
- * @string: string to look up in the string list
- *
- * Note that it is possible for this function to succeed on property values
- * that are not NUL-terminated. That's because the function will stop after
- * finding the first occurrence of @string. This can for example happen with
- * small-valued cell properties, such as #address-cells, when searching for
- * the empty string.
- *
- * @return:
- *   the index of the string in the list of strings
- *   -FDT_ERR_BADVALUE if the property value is not NUL-terminated
- *   -FDT_ERR_NOTFOUND if the property does not exist or does not contain
- *                     the given string
- */
-int fdt_stringlist_search(const void *fdt, int nodeoffset, const char *property,
-			  const char *string);
-
-/**
- * fdt_stringlist_get() - obtain the string at a given index in a string list
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of a tree node
- * @property: name of the property containing the string list
- * @index: index of the string to return
- * @lenp: return location for the string length or an error code on failure
- *
- * Note that this will successfully extract strings from properties with
- * non-NUL-terminated values. For example on small-valued cell properties
- * this function will return the empty string.
- *
- * If non-NULL, the length of the string (on success) or a negative error-code
- * (on failure) will be stored in the integer pointer to by lenp.
- *
- * @return:
- *   A pointer to the string at the given index in the string list or NULL on
- *   failure. On success the length of the string will be stored in the memory
- *   location pointed to by the lenp parameter, if non-NULL. On failure one of
- *   the following negative error codes will be returned in the lenp parameter
- *   (if non-NULL):
- *     -FDT_ERR_BADVALUE if the property value is not NUL-terminated
- *     -FDT_ERR_NOTFOUND if the property does not exist
- */
-const char *fdt_stringlist_get(const void *fdt, int nodeoffset,
-			       const char *property, int index,
-			       int *lenp);
-
-/**********************************************************************/
-/* Read-only functions (addressing related)                           */
-/**********************************************************************/
-
-/**
- * FDT_MAX_NCELLS - maximum value for #address-cells and #size-cells
- *
- * This is the maximum value for #address-cells, #size-cells and
- * similar properties that will be processed by libfdt.  IEE1275
- * requires that OF implementations handle values up to 4.
- * Implementations may support larger values, but in practice higher
- * values aren't used.
- */
-#define FDT_MAX_NCELLS		4
-
-/**
- * fdt_address_cells - retrieve address size for a bus represented in the tree
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node to find the address size for
- *
- * When the node has a valid #address-cells property, returns its value.
- *
- * returns:
- *	0 <= n < FDT_MAX_NCELLS, on success
- *      2, if the node has no #address-cells property
- *      -FDT_ERR_BADNCELLS, if the node has a badly formatted or invalid
- *		#address-cells property
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-int fdt_address_cells(const void *fdt, int nodeoffset);
-
-/**
- * fdt_size_cells - retrieve address range size for a bus represented in the
- *                  tree
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node to find the address range size for
- *
- * When the node has a valid #size-cells property, returns its value.
- *
- * returns:
- *	0 <= n < FDT_MAX_NCELLS, on success
- *      2, if the node has no #address-cells property
- *      -FDT_ERR_BADNCELLS, if the node has a badly formatted or invalid
- *		#size-cells property
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-int fdt_size_cells(const void *fdt, int nodeoffset);
-
-
-/**********************************************************************/
-/* Write-in-place functions                                           */
-/**********************************************************************/
-
-/**
- * fdt_setprop_inplace_namelen_partial - change a property's value,
- *                                       but not its size
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to change
- * @name: name of the property to change
- * @namelen: number of characters of name to consider
- * @idx: index of the property to change in the array
- * @val: pointer to data to replace the property value with
- * @len: length of the property value
- *
- * Identical to fdt_setprop_inplace(), but modifies the given property
- * starting from the given index, and using only the first characters
- * of the name. It is useful when you want to manipulate only one value of
- * an array and you have a string that doesn't end with \0.
- */
-int fdt_setprop_inplace_namelen_partial(void *fdt, int nodeoffset,
-					const char *name, int namelen,
-					uint32_t idx, const void *val,
-					int len);
-
-/**
- * fdt_setprop_inplace - change a property's value, but not its size
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to change
- * @name: name of the property to change
- * @val: pointer to data to replace the property value with
- * @len: length of the property value
- *
- * fdt_setprop_inplace() replaces the value of a given property with
- * the data in val, of length len.  This function cannot change the
- * size of a property, and so will only work if len is equal to the
- * current length of the property.
- *
- * This function will alter only the bytes in the blob which contain
- * the given property value, and will not alter or move any other part
- * of the tree.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOSPACE, if len is not equal to the property's current length
- *	-FDT_ERR_NOTFOUND, node does not have the named property
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
-			const void *val, int len);
-
-/**
- * fdt_setprop_inplace_u32 - change the value of a 32-bit integer property
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to change
- * @name: name of the property to change
- * @val: 32-bit integer value to replace the property with
- *
- * fdt_setprop_inplace_u32() replaces the value of a given property
- * with the 32-bit integer value in val, converting val to big-endian
- * if necessary.  This function cannot change the size of a property,
- * and so will only work if the property already exists and has length
- * 4.
- *
- * This function will alter only the bytes in the blob which contain
- * the given property value, and will not alter or move any other part
- * of the tree.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOSPACE, if the property's length is not equal to 4
- *	-FDT_ERR_NOTFOUND, node does not have the named property
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-static inline int fdt_setprop_inplace_u32(void *fdt, int nodeoffset,
-					  const char *name, uint32_t val)
-{
-	fdt32_t tmp = cpu_to_fdt32(val);
-	return fdt_setprop_inplace(fdt, nodeoffset, name, &tmp, sizeof(tmp));
-}
-
-/**
- * fdt_setprop_inplace_u64 - change the value of a 64-bit integer property
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to change
- * @name: name of the property to change
- * @val: 64-bit integer value to replace the property with
- *
- * fdt_setprop_inplace_u64() replaces the value of a given property
- * with the 64-bit integer value in val, converting val to big-endian
- * if necessary.  This function cannot change the size of a property,
- * and so will only work if the property already exists and has length
- * 8.
- *
- * This function will alter only the bytes in the blob which contain
- * the given property value, and will not alter or move any other part
- * of the tree.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOSPACE, if the property's length is not equal to 8
- *	-FDT_ERR_NOTFOUND, node does not have the named property
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-static inline int fdt_setprop_inplace_u64(void *fdt, int nodeoffset,
-					  const char *name, uint64_t val)
-{
-	fdt64_t tmp = cpu_to_fdt64(val);
-	return fdt_setprop_inplace(fdt, nodeoffset, name, &tmp, sizeof(tmp));
-}
-
-/**
- * fdt_setprop_inplace_cell - change the value of a single-cell property
- *
- * This is an alternative name for fdt_setprop_inplace_u32()
- */
-static inline int fdt_setprop_inplace_cell(void *fdt, int nodeoffset,
-					   const char *name, uint32_t val)
-{
-	return fdt_setprop_inplace_u32(fdt, nodeoffset, name, val);
-}
-
-/**
- * fdt_nop_property - replace a property with nop tags
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to nop
- * @name: name of the property to nop
- *
- * fdt_nop_property() will replace a given property's representation
- * in the blob with FDT_NOP tags, effectively removing it from the
- * tree.
- *
- * This function will alter only the bytes in the blob which contain
- * the property, and will not alter or move any other part of the
- * tree.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOTFOUND, node does not have the named property
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-int fdt_nop_property(void *fdt, int nodeoffset, const char *name);
-
-/**
- * fdt_nop_node - replace a node (subtree) with nop tags
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node to nop
- *
- * fdt_nop_node() will replace a given node's representation in the
- * blob, including all its subnodes, if any, with FDT_NOP tags,
- * effectively removing it from the tree.
- *
- * This function will alter only the bytes in the blob which contain
- * the node and its properties and subnodes, and will not alter or
- * move any other part of the tree.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-int fdt_nop_node(void *fdt, int nodeoffset);
-
-/**********************************************************************/
-/* Sequential write functions                                         */
-/**********************************************************************/
-
-int fdt_create(void *buf, int bufsize);
-int fdt_resize(void *fdt, void *buf, int bufsize);
-int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size);
-int fdt_finish_reservemap(void *fdt);
-int fdt_begin_node(void *fdt, const char *name);
-int fdt_property(void *fdt, const char *name, const void *val, int len);
-static inline int fdt_property_u32(void *fdt, const char *name, uint32_t val)
-{
-	fdt32_t tmp = cpu_to_fdt32(val);
-	return fdt_property(fdt, name, &tmp, sizeof(tmp));
-}
-static inline int fdt_property_u64(void *fdt, const char *name, uint64_t val)
-{
-	fdt64_t tmp = cpu_to_fdt64(val);
-	return fdt_property(fdt, name, &tmp, sizeof(tmp));
-}
-static inline int fdt_property_cell(void *fdt, const char *name, uint32_t val)
-{
-	return fdt_property_u32(fdt, name, val);
-}
-#define fdt_property_string(fdt, name, str) \
-	fdt_property(fdt, name, str, strlen(str)+1)
-int fdt_end_node(void *fdt);
-int fdt_finish(void *fdt);
-
-/**********************************************************************/
-/* Read-write functions                                               */
-/**********************************************************************/
-
-int fdt_create_empty_tree(void *buf, int bufsize);
-int fdt_open_into(const void *fdt, void *buf, int bufsize);
-int fdt_pack(void *fdt);
-
-/**
- * fdt_add_mem_rsv - add one memory reserve map entry
- * @fdt: pointer to the device tree blob
- * @address, @size: 64-bit values (native endian)
- *
- * Adds a reserve map entry to the given blob reserving a region at
- * address address of length size.
- *
- * This function will insert data into the reserve map and will
- * therefore change the indexes of some entries in the table.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOSPACE, there is insufficient free space in the blob to
- *		contain the new reservation entry
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-int fdt_add_mem_rsv(void *fdt, uint64_t address, uint64_t size);
-
-/**
- * fdt_del_mem_rsv - remove a memory reserve map entry
- * @fdt: pointer to the device tree blob
- * @n: entry to remove
- *
- * fdt_del_mem_rsv() removes the n-th memory reserve map entry from
- * the blob.
- *
- * This function will delete data from the reservation table and will
- * therefore change the indexes of some entries in the table.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOTFOUND, there is no entry of the given index (i.e. there
- *		are less than n+1 reserve map entries)
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-int fdt_del_mem_rsv(void *fdt, int n);
-
-/**
- * fdt_set_name - change the name of a given node
- * @fdt: pointer to the device tree blob
- * @nodeoffset: structure block offset of a node
- * @name: name to give the node
- *
- * fdt_set_name() replaces the name (including unit address, if any)
- * of the given node with the given string.  NOTE: this function can't
- * efficiently check if the new name is unique amongst the given
- * node's siblings; results are undefined if this function is invoked
- * with a name equal to one of the given node's siblings.
- *
- * This function may insert or delete data from the blob, and will
- * therefore change the offsets of some existing nodes.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOSPACE, there is insufficient free space in the blob
- *		to contain the new name
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE, standard meanings
- */
-int fdt_set_name(void *fdt, int nodeoffset, const char *name);
-
-/**
- * fdt_setprop - create or change a property
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to change
- * @name: name of the property to change
- * @val: pointer to data to set the property value to
- * @len: length of the property value
- *
- * fdt_setprop() sets the value of the named property in the given
- * node to the given value and length, creating the property if it
- * does not already exist.
- *
- * This function may insert or delete data from the blob, and will
- * therefore change the offsets of some existing nodes.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOSPACE, there is insufficient free space in the blob to
- *		contain the new property value
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-int fdt_setprop(void *fdt, int nodeoffset, const char *name,
-		const void *val, int len);
-
-/**
- * fdt_setprop_u32 - set a property to a 32-bit integer
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to change
- * @name: name of the property to change
- * @val: 32-bit integer value for the property (native endian)
- *
- * fdt_setprop_u32() sets the value of the named property in the given
- * node to the given 32-bit integer value (converting to big-endian if
- * necessary), or creates a new property with that value if it does
- * not already exist.
- *
- * This function may insert or delete data from the blob, and will
- * therefore change the offsets of some existing nodes.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOSPACE, there is insufficient free space in the blob to
- *		contain the new property value
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-static inline int fdt_setprop_u32(void *fdt, int nodeoffset, const char *name,
-				  uint32_t val)
-{
-	fdt32_t tmp = cpu_to_fdt32(val);
-	return fdt_setprop(fdt, nodeoffset, name, &tmp, sizeof(tmp));
-}
-
-/**
- * fdt_setprop_u64 - set a property to a 64-bit integer
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to change
- * @name: name of the property to change
- * @val: 64-bit integer value for the property (native endian)
- *
- * fdt_setprop_u64() sets the value of the named property in the given
- * node to the given 64-bit integer value (converting to big-endian if
- * necessary), or creates a new property with that value if it does
- * not already exist.
- *
- * This function may insert or delete data from the blob, and will
- * therefore change the offsets of some existing nodes.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOSPACE, there is insufficient free space in the blob to
- *		contain the new property value
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-static inline int fdt_setprop_u64(void *fdt, int nodeoffset, const char *name,
-				  uint64_t val)
-{
-	fdt64_t tmp = cpu_to_fdt64(val);
-	return fdt_setprop(fdt, nodeoffset, name, &tmp, sizeof(tmp));
-}
-
-/**
- * fdt_setprop_cell - set a property to a single cell value
- *
- * This is an alternative name for fdt_setprop_u32()
- */
-static inline int fdt_setprop_cell(void *fdt, int nodeoffset, const char *name,
-				   uint32_t val)
-{
-	return fdt_setprop_u32(fdt, nodeoffset, name, val);
-}
-
-/**
- * fdt_setprop_string - set a property to a string value
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to change
- * @name: name of the property to change
- * @str: string value for the property
- *
- * fdt_setprop_string() sets the value of the named property in the
- * given node to the given string value (using the length of the
- * string to determine the new length of the property), or creates a
- * new property with that value if it does not already exist.
- *
- * This function may insert or delete data from the blob, and will
- * therefore change the offsets of some existing nodes.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOSPACE, there is insufficient free space in the blob to
- *		contain the new property value
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-#define fdt_setprop_string(fdt, nodeoffset, name, str) \
-	fdt_setprop((fdt), (nodeoffset), (name), (str), strlen(str)+1)
-
-
-/**
- * fdt_setprop_empty - set a property to an empty value
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to change
- * @name: name of the property to change
- *
- * fdt_setprop_empty() sets the value of the named property in the
- * given node to an empty (zero length) value, or creates a new empty
- * property if it does not already exist.
- *
- * This function may insert or delete data from the blob, and will
- * therefore change the offsets of some existing nodes.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOSPACE, there is insufficient free space in the blob to
- *		contain the new property value
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-#define fdt_setprop_empty(fdt, nodeoffset, name) \
-	fdt_setprop((fdt), (nodeoffset), (name), NULL, 0)
-
-/**
- * fdt_appendprop - append to or create a property
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to change
- * @name: name of the property to append to
- * @val: pointer to data to append to the property value
- * @len: length of the data to append to the property value
- *
- * fdt_appendprop() appends the value to the named property in the
- * given node, creating the property if it does not already exist.
- *
- * This function may insert data into the blob, and will therefore
- * change the offsets of some existing nodes.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOSPACE, there is insufficient free space in the blob to
- *		contain the new property value
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-int fdt_appendprop(void *fdt, int nodeoffset, const char *name,
-		   const void *val, int len);
-
-/**
- * fdt_appendprop_u32 - append a 32-bit integer value to a property
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to change
- * @name: name of the property to change
- * @val: 32-bit integer value to append to the property (native endian)
- *
- * fdt_appendprop_u32() appends the given 32-bit integer value
- * (converting to big-endian if necessary) to the value of the named
- * property in the given node, or creates a new property with that
- * value if it does not already exist.
- *
- * This function may insert data into the blob, and will therefore
- * change the offsets of some existing nodes.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOSPACE, there is insufficient free space in the blob to
- *		contain the new property value
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-static inline int fdt_appendprop_u32(void *fdt, int nodeoffset,
-				     const char *name, uint32_t val)
-{
-	fdt32_t tmp = cpu_to_fdt32(val);
-	return fdt_appendprop(fdt, nodeoffset, name, &tmp, sizeof(tmp));
-}
-
-/**
- * fdt_appendprop_u64 - append a 64-bit integer value to a property
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to change
- * @name: name of the property to change
- * @val: 64-bit integer value to append to the property (native endian)
- *
- * fdt_appendprop_u64() appends the given 64-bit integer value
- * (converting to big-endian if necessary) to the value of the named
- * property in the given node, or creates a new property with that
- * value if it does not already exist.
- *
- * This function may insert data into the blob, and will therefore
- * change the offsets of some existing nodes.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOSPACE, there is insufficient free space in the blob to
- *		contain the new property value
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-static inline int fdt_appendprop_u64(void *fdt, int nodeoffset,
-				     const char *name, uint64_t val)
-{
-	fdt64_t tmp = cpu_to_fdt64(val);
-	return fdt_appendprop(fdt, nodeoffset, name, &tmp, sizeof(tmp));
-}
-
-/**
- * fdt_appendprop_cell - append a single cell value to a property
- *
- * This is an alternative name for fdt_appendprop_u32()
- */
-static inline int fdt_appendprop_cell(void *fdt, int nodeoffset,
-				      const char *name, uint32_t val)
-{
-	return fdt_appendprop_u32(fdt, nodeoffset, name, val);
-}
-
-/**
- * fdt_appendprop_string - append a string to a property
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to change
- * @name: name of the property to change
- * @str: string value to append to the property
- *
- * fdt_appendprop_string() appends the given string to the value of
- * the named property in the given node, or creates a new property
- * with that value if it does not already exist.
- *
- * This function may insert data into the blob, and will therefore
- * change the offsets of some existing nodes.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOSPACE, there is insufficient free space in the blob to
- *		contain the new property value
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-#define fdt_appendprop_string(fdt, nodeoffset, name, str) \
-	fdt_appendprop((fdt), (nodeoffset), (name), (str), strlen(str)+1)
-
-/**
- * fdt_delprop - delete a property
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node whose property to nop
- * @name: name of the property to nop
- *
- * fdt_del_property() will delete the given property.
- *
- * This function will delete data from the blob, and will therefore
- * change the offsets of some existing nodes.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOTFOUND, node does not have the named property
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-int fdt_delprop(void *fdt, int nodeoffset, const char *name);
-
-/**
- * fdt_add_subnode_namelen - creates a new node based on substring
- * @fdt: pointer to the device tree blob
- * @parentoffset: structure block offset of a node
- * @name: name of the subnode to locate
- * @namelen: number of characters of name to consider
- *
- * Identical to fdt_add_subnode(), but use only the first namelen
- * characters of name as the name of the new node.  This is useful for
- * creating subnodes based on a portion of a larger string, such as a
- * full path.
- */
-int fdt_add_subnode_namelen(void *fdt, int parentoffset,
-			    const char *name, int namelen);
-
-/**
- * fdt_add_subnode - creates a new node
- * @fdt: pointer to the device tree blob
- * @parentoffset: structure block offset of a node
- * @name: name of the subnode to locate
- *
- * fdt_add_subnode() creates a new node as a subnode of the node at
- * structure block offset parentoffset, with the given name (which
- * should include the unit address, if any).
- *
- * This function will insert data into the blob, and will therefore
- * change the offsets of some existing nodes.
-
- * returns:
- *	structure block offset of the created nodeequested subnode (>=0), on
- *		success
- *	-FDT_ERR_NOTFOUND, if the requested subnode does not exist
- *	-FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE
- *		tag
- *	-FDT_ERR_EXISTS, if the node at parentoffset already has a subnode of
- *		the given name
- *	-FDT_ERR_NOSPACE, if there is insufficient free space in the
- *		blob to contain the new node
- *	-FDT_ERR_NOSPACE
- *	-FDT_ERR_BADLAYOUT
- *      -FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings.
- */
-int fdt_add_subnode(void *fdt, int parentoffset, const char *name);
-
-/**
- * fdt_del_node - delete a node (subtree)
- * @fdt: pointer to the device tree blob
- * @nodeoffset: offset of the node to nop
- *
- * fdt_del_node() will remove the given node, including all its
- * subnodes if any, from the blob.
- *
- * This function will delete data from the blob, and will therefore
- * change the offsets of some existing nodes.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-int fdt_del_node(void *fdt, int nodeoffset);
-
-/**
- * fdt_overlay_apply - Applies a DT overlay on a base DT
- * @fdt: pointer to the base device tree blob
- * @fdto: pointer to the device tree overlay blob
- *
- * fdt_overlay_apply() will apply the given device tree overlay on the
- * given base device tree.
- *
- * Expect the base device tree to be modified, even if the function
- * returns an error.
- *
- * returns:
- *	0, on success
- *	-FDT_ERR_NOSPACE, there's not enough space in the base device tree
- *	-FDT_ERR_NOTFOUND, the overlay points to some inexistant nodes or
- *		properties in the base DT
- *	-FDT_ERR_BADPHANDLE,
- *	-FDT_ERR_BADOVERLAY,
- *	-FDT_ERR_NOPHANDLES,
- *	-FDT_ERR_INTERNAL,
- *	-FDT_ERR_BADLAYOUT,
- *	-FDT_ERR_BADMAGIC,
- *	-FDT_ERR_BADOFFSET,
- *	-FDT_ERR_BADPATH,
- *	-FDT_ERR_BADVERSION,
- *	-FDT_ERR_BADSTRUCTURE,
- *	-FDT_ERR_BADSTATE,
- *	-FDT_ERR_TRUNCATED, standard meanings
- */
-int fdt_overlay_apply(void *fdt, void *fdto);
-
-/**********************************************************************/
-/* Debugging / informational functions                                */
-/**********************************************************************/
-
-const char *fdt_strerror(int errval);
-
-#endif /* _LIBFDT_H */
diff --git a/contrib/dtc/libfdt/libfdt_env.h b/contrib/dtc/libfdt/libfdt_env.h
deleted file mode 100644
index 99f936dacc60..000000000000
--- a/contrib/dtc/libfdt/libfdt_env.h
+++ /dev/null
@@ -1,112 +0,0 @@
-#ifndef _LIBFDT_ENV_H
-#define _LIBFDT_ENV_H
-/*
- * libfdt - Flat Device Tree manipulation
- * Copyright (C) 2006 David Gibson, IBM Corporation.
- * Copyright 2012 Kim Phillips, Freescale Semiconductor.
- *
- * libfdt is dual licensed: you can use it either under the terms of
- * the GPL, or the BSD license, at your option.
- *
- *  a) This library is free software; you can redistribute it and/or
- *     modify it under the terms of the GNU General Public License as
- *     published by the Free Software Foundation; either version 2 of the
- *     License, or (at your option) any later version.
- *
- *     This library is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public
- *     License along with this library; if not, write to the Free
- *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *     MA 02110-1301 USA
- *
- * Alternatively,
- *
- *  b) Redistribution and use in source and binary forms, with or
- *     without modification, are permitted provided that the following
- *     conditions are met:
- *
- *     1. Redistributions of source code must retain the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer.
- *     2. Redistributions in binary form must reproduce the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer in the documentation and/or other materials
- *        provided with the distribution.
- *
- *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <stddef.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-
-#ifdef __CHECKER__
-#define __force __attribute__((force))
-#define __bitwise __attribute__((bitwise))
-#else
-#define __force
-#define __bitwise
-#endif
-
-typedef uint16_t __bitwise fdt16_t;
-typedef uint32_t __bitwise fdt32_t;
-typedef uint64_t __bitwise fdt64_t;
-
-#define EXTRACT_BYTE(x, n)	((unsigned long long)((uint8_t *)&x)[n])
-#define CPU_TO_FDT16(x) ((EXTRACT_BYTE(x, 0) << 8) | EXTRACT_BYTE(x, 1))
-#define CPU_TO_FDT32(x) ((EXTRACT_BYTE(x, 0) << 24) | (EXTRACT_BYTE(x, 1) << 16) | \
-			 (EXTRACT_BYTE(x, 2) << 8) | EXTRACT_BYTE(x, 3))
-#define CPU_TO_FDT64(x) ((EXTRACT_BYTE(x, 0) << 56) | (EXTRACT_BYTE(x, 1) << 48) | \
-			 (EXTRACT_BYTE(x, 2) << 40) | (EXTRACT_BYTE(x, 3) << 32) | \
-			 (EXTRACT_BYTE(x, 4) << 24) | (EXTRACT_BYTE(x, 5) << 16) | \
-			 (EXTRACT_BYTE(x, 6) << 8) | EXTRACT_BYTE(x, 7))
-
-static inline uint16_t fdt16_to_cpu(fdt16_t x)
-{
-	return (__force uint16_t)CPU_TO_FDT16(x);
-}
-static inline fdt16_t cpu_to_fdt16(uint16_t x)
-{
-	return (__force fdt16_t)CPU_TO_FDT16(x);
-}
-
-static inline uint32_t fdt32_to_cpu(fdt32_t x)
-{
-	return (__force uint32_t)CPU_TO_FDT32(x);
-}
-static inline fdt32_t cpu_to_fdt32(uint32_t x)
-{
-	return (__force fdt32_t)CPU_TO_FDT32(x);
-}
-
-static inline uint64_t fdt64_to_cpu(fdt64_t x)
-{
-	return (__force uint64_t)CPU_TO_FDT64(x);
-}
-static inline fdt64_t cpu_to_fdt64(uint64_t x)
-{
-	return (__force fdt64_t)CPU_TO_FDT64(x);
-}
-#undef CPU_TO_FDT64
-#undef CPU_TO_FDT32
-#undef CPU_TO_FDT16
-#undef EXTRACT_BYTE
-
-#endif /* _LIBFDT_ENV_H */
diff --git a/contrib/dtc/libfdt/libfdt_internal.h b/contrib/dtc/libfdt/libfdt_internal.h
deleted file mode 100644
index 02cfa6fb612d..000000000000
--- a/contrib/dtc/libfdt/libfdt_internal.h
+++ /dev/null
@@ -1,95 +0,0 @@
-#ifndef _LIBFDT_INTERNAL_H
-#define _LIBFDT_INTERNAL_H
-/*
- * libfdt - Flat Device Tree manipulation
- * Copyright (C) 2006 David Gibson, IBM Corporation.
- *
- * libfdt is dual licensed: you can use it either under the terms of
- * the GPL, or the BSD license, at your option.
- *
- *  a) This library is free software; you can redistribute it and/or
- *     modify it under the terms of the GNU General Public License as
- *     published by the Free Software Foundation; either version 2 of the
- *     License, or (at your option) any later version.
- *
- *     This library is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public
- *     License along with this library; if not, write to the Free
- *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *     MA 02110-1301 USA
- *
- * Alternatively,
- *
- *  b) Redistribution and use in source and binary forms, with or
- *     without modification, are permitted provided that the following
- *     conditions are met:
- *
- *     1. Redistributions of source code must retain the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer.
- *     2. Redistributions in binary form must reproduce the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer in the documentation and/or other materials
- *        provided with the distribution.
- *
- *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-#include <fdt.h>
-
-#define FDT_ALIGN(x, a)		(((x) + (a) - 1) & ~((a) - 1))
-#define FDT_TAGALIGN(x)		(FDT_ALIGN((x), FDT_TAGSIZE))
-
-#define FDT_CHECK_HEADER(fdt) \
-	{ \
-		int __err; \
-		if ((__err = fdt_check_header(fdt)) != 0) \
-			return __err; \
-	}
-
-int _fdt_check_node_offset(const void *fdt, int offset);
-int _fdt_check_prop_offset(const void *fdt, int offset);
-const char *_fdt_find_string(const char *strtab, int tabsize, const char *s);
-int _fdt_node_end_offset(void *fdt, int nodeoffset);
-
-static inline const void *_fdt_offset_ptr(const void *fdt, int offset)
-{
-	return (const char *)fdt + fdt_off_dt_struct(fdt) + offset;
-}
-
-static inline void *_fdt_offset_ptr_w(void *fdt, int offset)
-{
-	return (void *)(uintptr_t)_fdt_offset_ptr(fdt, offset);
-}
-
-static inline const struct fdt_reserve_entry *_fdt_mem_rsv(const void *fdt, int n)
-{
-	const struct fdt_reserve_entry *rsv_table =
-		(const struct fdt_reserve_entry *)
-		((const char *)fdt + fdt_off_mem_rsvmap(fdt));
-
-	return rsv_table + n;
-}
-static inline struct fdt_reserve_entry *_fdt_mem_rsv_w(void *fdt, int n)
-{
-	return (void *)(uintptr_t)_fdt_mem_rsv(fdt, n);
-}
-
-#define FDT_SW_MAGIC		(~FDT_MAGIC)
-
-#endif /* _LIBFDT_INTERNAL_H */
diff --git a/contrib/dtc/libfdt/version.lds b/contrib/dtc/libfdt/version.lds
deleted file mode 100644
index cff0358f2314..000000000000
--- a/contrib/dtc/libfdt/version.lds
+++ /dev/null
@@ -1,68 +0,0 @@
-LIBFDT_1.2 {
-	global:
-		fdt_next_node;
-		fdt_check_header;
-		fdt_move;
-		fdt_string;
-		fdt_num_mem_rsv;
-		fdt_get_mem_rsv;
-		fdt_subnode_offset_namelen;
-		fdt_subnode_offset;
-		fdt_path_offset_namelen;
-		fdt_path_offset;
-		fdt_get_name;
-		fdt_get_property_namelen;
-		fdt_get_property;
-		fdt_getprop_namelen;
-		fdt_getprop;
-		fdt_get_phandle;
-		fdt_get_alias_namelen;
-		fdt_get_alias;
-		fdt_get_path;
-		fdt_supernode_atdepth_offset;
-		fdt_node_depth;
-		fdt_parent_offset;
-		fdt_node_offset_by_prop_value;
-		fdt_node_offset_by_phandle;
-		fdt_node_check_compatible;
-		fdt_node_offset_by_compatible;
-		fdt_setprop_inplace;
-		fdt_nop_property;
-		fdt_nop_node;
-		fdt_create;
-		fdt_add_reservemap_entry;
-		fdt_finish_reservemap;
-		fdt_begin_node;
-		fdt_property;
-		fdt_end_node;
-		fdt_finish;
-		fdt_open_into;
-		fdt_pack;
-		fdt_add_mem_rsv;
-		fdt_del_mem_rsv;
-		fdt_set_name;
-		fdt_setprop;
-		fdt_delprop;
-		fdt_add_subnode_namelen;
-		fdt_add_subnode;
-		fdt_del_node;
-		fdt_strerror;
-		fdt_offset_ptr;
-		fdt_next_tag;
-		fdt_appendprop;
-		fdt_create_empty_tree;
-		fdt_first_property_offset;
-		fdt_get_property_by_offset;
-		fdt_getprop_by_offset;
-		fdt_next_property_offset;
-		fdt_first_subnode;
-		fdt_next_subnode;
-		fdt_address_cells;
-		fdt_size_cells;
-		fdt_stringlist_contains;
-		fdt_resize;
-		fdt_overlay_apply;
-
-	local:
-		*;
-};
diff --git a/contrib/dtc/livetree.c b/contrib/dtc/livetree.c
deleted file mode 100644
index 36be9afefd53..000000000000
--- a/contrib/dtc/livetree.c
+++ /dev/null
@@ -1,980 +0,0 @@
-/*
- * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2005.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
- *                                                                   USA
- */
-
-#include "dtc.h"
-
-/*
- * Tree building functions
- */
-
-void add_label(struct label **labels, char *label)
-{
-	struct label *new;
-
-	/* Make sure the label isn't already there */
-	for_each_label_withdel(*labels, new)
-		if (streq(new->label, label)) {
-			new->deleted = 0;
-			return;
-		}
-
-	new = xmalloc(sizeof(*new));
-	memset(new, 0, sizeof(*new));
-	new->label = label;
-	new->next = *labels;
-	*labels = new;
-}
-
-void delete_labels(struct label **labels)
-{
-	struct label *label;
-
-	for_each_label(*labels, label)
-		label->deleted = 1;
-}
-
-struct property *build_property(char *name, struct data val)
-{
-	struct property *new = xmalloc(sizeof(*new));
-
-	memset(new, 0, sizeof(*new));
-
-	new->name = name;
-	new->val = val;
-
-	return new;
-}
-
-struct property *build_property_delete(char *name)
-{
-	struct property *new = xmalloc(sizeof(*new));
-
-	memset(new, 0, sizeof(*new));
-
-	new->name = name;
-	new->deleted = 1;
-
-	return new;
-}
-
-struct property *chain_property(struct property *first, struct property *list)
-{
-	assert(first->next == NULL);
-
-	first->next = list;
-	return first;
-}
-
-struct property *reverse_properties(struct property *first)
-{
-	struct property *p = first;
-	struct property *head = NULL;
-	struct property *next;
-
-	while (p) {
-		next = p->next;
-		p->next = head;
-		head = p;
-		p = next;
-	}
-	return head;
-}
-
-struct node *build_node(struct property *proplist, struct node *children)
-{
-	struct node *new = xmalloc(sizeof(*new));
-	struct node *child;
-
-	memset(new, 0, sizeof(*new));
-
-	new->proplist = reverse_properties(proplist);
-	new->children = children;
-
-	for_each_child(new, child) {
-		child->parent = new;
-	}
-
-	return new;
-}
-
-struct node *build_node_delete(void)
-{
-	struct node *new = xmalloc(sizeof(*new));
-
-	memset(new, 0, sizeof(*new));
-
-	new->deleted = 1;
-
-	return new;
-}
-
-struct node *name_node(struct node *node, char *name)
-{
-	assert(node->name == NULL);
-
-	node->name = name;
-
-	return node;
-}
-
-struct node *merge_nodes(struct node *old_node, struct node *new_node)
-{
-	struct property *new_prop, *old_prop;
-	struct node *new_child, *old_child;
-	struct label *l;
-
-	old_node->deleted = 0;
-
-	/* Add new node labels to old node */
-	for_each_label_withdel(new_node->labels, l)
-		add_label(&old_node->labels, l->label);
-
-	/* Move properties from the new node to the old node.  If there
-	 * is a collision, replace the old value with the new */
-	while (new_node->proplist) {
-		/* Pop the property off the list */
-		new_prop = new_node->proplist;
-		new_node->proplist = new_prop->next;
-		new_prop->next = NULL;
-
-		if (new_prop->deleted) {
-			delete_property_by_name(old_node, new_prop->name);
-			free(new_prop);
-			continue;
-		}
-
-		/* Look for a collision, set new value if there is */
-		for_each_property_withdel(old_node, old_prop) {
-			if (streq(old_prop->name, new_prop->name)) {
-				/* Add new labels to old property */
-				for_each_label_withdel(new_prop->labels, l)
-					add_label(&old_prop->labels, l->label);
-
-				old_prop->val = new_prop->val;
-				old_prop->deleted = 0;
-				free(new_prop);
-				new_prop = NULL;
-				break;
-			}
-		}
-
-		/* if no collision occurred, add property to the old node. */
-		if (new_prop)
-			add_property(old_node, new_prop);
-	}
-
-	/* Move the override child nodes into the primary node.  If
-	 * there is a collision, then merge the nodes. */
-	while (new_node->children) {
-		/* Pop the child node off the list */
-		new_child = new_node->children;
-		new_node->children = new_child->next_sibling;
-		new_child->parent = NULL;
-		new_child->next_sibling = NULL;
-
-		if (new_child->deleted) {
-			delete_node_by_name(old_node, new_child->name);
-			free(new_child);
-			continue;
-		}
-
-		/* Search for a collision.  Merge if there is */
-		for_each_child_withdel(old_node, old_child) {
-			if (streq(old_child->name, new_child->name)) {
-				merge_nodes(old_child, new_child);
-				new_child = NULL;
-				break;
-			}
-		}
-
-		/* if no collision occurred, add child to the old node. */
-		if (new_child)
-			add_child(old_node, new_child);
-	}
-
-	/* The new node contents are now merged into the old node.  Free
-	 * the new node. */
-	free(new_node);
-
-	return old_node;
-}
-
-struct node *chain_node(struct node *first, struct node *list)
-{
-	assert(first->next_sibling == NULL);
-
-	first->next_sibling = list;
-	return first;
-}
-
-void add_property(struct node *node, struct property *prop)
-{
-	struct property **p;
-
-	prop->next = NULL;
-
-	p = &node->proplist;
-	while (*p)
-		p = &((*p)->next);
-
-	*p = prop;
-}
-
-void delete_property_by_name(struct node *node, char *name)
-{
-	struct property *prop = node->proplist;
-
-	while (prop) {
-		if (streq(prop->name, name)) {
-			delete_property(prop);
-			return;
-		}
-		prop = prop->next;
-	}
-}
-
-void delete_property(struct property *prop)
-{
-	prop->deleted = 1;
-	delete_labels(&prop->labels);
-}
-
-void add_child(struct node *parent, struct node *child)
-{
-	struct node **p;
-
-	child->next_sibling = NULL;
-	child->parent = parent;
-
-	p = &parent->children;
-	while (*p)
-		p = &((*p)->next_sibling);
-
-	*p = child;
-}
-
-void delete_node_by_name(struct node *parent, char *name)
-{
-	struct node *node = parent->children;
-
-	while (node) {
-		if (streq(node->name, name)) {
-			delete_node(node);
-			return;
-		}
-		node = node->next_sibling;
-	}
-}
-
-void delete_node(struct node *node)
-{
-	struct property *prop;
-	struct node *child;
-
-	node->deleted = 1;
-	for_each_child(node, child)
-		delete_node(child);
-	for_each_property(node, prop)
-		delete_property(prop);
-	delete_labels(&node->labels);
-}
-
-void append_to_property(struct node *node,
-				    char *name, const void *data, int len)
-{
-	struct data d;
-	struct property *p;
-
-	p = get_property(node, name);
-	if (p) {
-		d = data_append_data(p->val, data, len);
-		p->val = d;
-	} else {
-		d = data_append_data(empty_data, data, len);
-		p = build_property(name, d);
-		add_property(node, p);
-	}
-}
-
-struct reserve_info *build_reserve_entry(uint64_t address, uint64_t size)
-{
-	struct reserve_info *new = xmalloc(sizeof(*new));
-
-	memset(new, 0, sizeof(*new));
-
-	new->re.address = address;
-	new->re.size = size;
-
-	return new;
-}
-
-struct reserve_info *chain_reserve_entry(struct reserve_info *first,
-					struct reserve_info *list)
-{
-	assert(first->next == NULL);
-
-	first->next = list;
-	return first;
-}
-
-struct reserve_info *add_reserve_entry(struct reserve_info *list,
-				      struct reserve_info *new)
-{
-	struct reserve_info *last;
-
-	new->next = NULL;
-
-	if (! list)
-		return new;
-
-	for (last = list; last->next; last = last->next)
-		;
-
-	last->next = new;
-
-	return list;
-}
-
-struct dt_info *build_dt_info(unsigned int dtsflags,
-			      struct reserve_info *reservelist,
-			      struct node *tree, uint32_t boot_cpuid_phys)
-{
-	struct dt_info *dti;
-
-	dti = xmalloc(sizeof(*dti));
-	dti->dtsflags = dtsflags;
-	dti->reservelist = reservelist;
-	dti->dt = tree;
-	dti->boot_cpuid_phys = boot_cpuid_phys;
-
-	return dti;
-}
-
-/*
- * Tree accessor functions
- */
-
-const char *get_unitname(struct node *node)
-{
-	if (node->name[node->basenamelen] == '\0')
-		return "";
-	else
-		return node->name + node->basenamelen + 1;
-}
-
-struct property *get_property(struct node *node, const char *propname)
-{
-	struct property *prop;
-
-	for_each_property(node, prop)
-		if (streq(prop->name, propname))
-			return prop;
-
-	return NULL;
-}
-
-cell_t propval_cell(struct property *prop)
-{
-	assert(prop->val.len == sizeof(cell_t));
-	return fdt32_to_cpu(*((cell_t *)prop->val.val));
-}
-
-struct property *get_property_by_label(struct node *tree, const char *label,
-				       struct node **node)
-{
-	struct property *prop;
-	struct node *c;
-
-	*node = tree;
-
-	for_each_property(tree, prop) {
-		struct label *l;
-
-		for_each_label(prop->labels, l)
-			if (streq(l->label, label))
-				return prop;
-	}
-
-	for_each_child(tree, c) {
-		prop = get_property_by_label(c, label, node);
-		if (prop)
-			return prop;
-	}
-
-	*node = NULL;
-	return NULL;
-}
-
-struct marker *get_marker_label(struct node *tree, const char *label,
-				struct node **node, struct property **prop)
-{
-	struct marker *m;
-	struct property *p;
-	struct node *c;
-
-	*node = tree;
-
-	for_each_property(tree, p) {
-		*prop = p;
-		m = p->val.markers;
-		for_each_marker_of_type(m, LABEL)
-			if (streq(m->ref, label))
-				return m;
-	}
-
-	for_each_child(tree, c) {
-		m = get_marker_label(c, label, node, prop);
-		if (m)
-			return m;
-	}
-
-	*prop = NULL;
-	*node = NULL;
-	return NULL;
-}
-
-struct node *get_subnode(struct node *node, const char *nodename)
-{
-	struct node *child;
-
-	for_each_child(node, child)
-		if (streq(child->name, nodename))
-			return child;
-
-	return NULL;
-}
-
-struct node *get_node_by_path(struct node *tree, const char *path)
-{
-	const char *p;
-	struct node *child;
-
-	if (!path || ! (*path)) {
-		if (tree->deleted)
-			return NULL;
-		return tree;
-	}
-
-	while (path[0] == '/')
-		path++;
-
-	p = strchr(path, '/');
-
-	for_each_child(tree, child) {
-		if (p && strneq(path, child->name, p-path))
-			return get_node_by_path(child, p+1);
-		else if (!p && streq(path, child->name))
-			return child;
-	}
-
-	return NULL;
-}
-
-struct node *get_node_by_label(struct node *tree, const char *label)
-{
-	struct node *child, *node;
-	struct label *l;
-
-	assert(label && (strlen(label) > 0));
-
-	for_each_label(tree->labels, l)
-		if (streq(l->label, label))
-			return tree;
-
-	for_each_child(tree, child) {
-		node = get_node_by_label(child, label);
-		if (node)
-			return node;
-	}
-
-	return NULL;
-}
-
-struct node *get_node_by_phandle(struct node *tree, cell_t phandle)
-{
-	struct node *child, *node;
-
-	assert((phandle != 0) && (phandle != -1));
-
-	if (tree->phandle == phandle) {
-		if (tree->deleted)
-			return NULL;
-		return tree;
-	}
-
-	for_each_child(tree, child) {
-		node = get_node_by_phandle(child, phandle);
-		if (node)
-			return node;
-	}
-
-	return NULL;
-}
-
-struct node *get_node_by_ref(struct node *tree, const char *ref)
-{
-	if (streq(ref, "/"))
-		return tree;
-	else if (ref[0] == '/')
-		return get_node_by_path(tree, ref);
-	else
-		return get_node_by_label(tree, ref);
-}
-
-cell_t get_node_phandle(struct node *root, struct node *node)
-{
-	static cell_t phandle = 1; /* FIXME: ick, static local */
-
-	if ((node->phandle != 0) && (node->phandle != -1))
-		return node->phandle;
-
-	while (get_node_by_phandle(root, phandle))
-		phandle++;
-
-	node->phandle = phandle;
-
-	if (!get_property(node, "linux,phandle")
-	    && (phandle_format & PHANDLE_LEGACY))
-		add_property(node,
-			     build_property("linux,phandle",
-					    data_append_cell(empty_data, phandle)));
-
-	if (!get_property(node, "phandle")
-	    && (phandle_format & PHANDLE_EPAPR))
-		add_property(node,
-			     build_property("phandle",
-					    data_append_cell(empty_data, phandle)));
-
-	/* If the node *does* have a phandle property, we must
-	 * be dealing with a self-referencing phandle, which will be
-	 * fixed up momentarily in the caller */
-
-	return node->phandle;
-}
-
-uint32_t guess_boot_cpuid(struct node *tree)
-{
-	struct node *cpus, *bootcpu;
-	struct property *reg;
-
-	cpus = get_node_by_path(tree, "/cpus");
-	if (!cpus)
-		return 0;
-
-
-	bootcpu = cpus->children;
-	if (!bootcpu)
-		return 0;
-
-	reg = get_property(bootcpu, "reg");
-	if (!reg || (reg->val.len != sizeof(uint32_t)))
-		return 0;
-
-	/* FIXME: Sanity check node? */
-
-	return propval_cell(reg);
-}
-
-static int cmp_reserve_info(const void *ax, const void *bx)
-{
-	const struct reserve_info *a, *b;
-
-	a = *((const struct reserve_info * const *)ax);
-	b = *((const struct reserve_info * const *)bx);
-
-	if (a->re.address < b->re.address)
-		return -1;
-	else if (a->re.address > b->re.address)
-		return 1;
-	else if (a->re.size < b->re.size)
-		return -1;
-	else if (a->re.size > b->re.size)
-		return 1;
-	else
-		return 0;
-}
-
-static void sort_reserve_entries(struct dt_info *dti)
-{
-	struct reserve_info *ri, **tbl;
-	int n = 0, i = 0;
-
-	for (ri = dti->reservelist;
-	     ri;
-	     ri = ri->next)
-		n++;
-
-	if (n == 0)
-		return;
-
-	tbl = xmalloc(n * sizeof(*tbl));
-
-	for (ri = dti->reservelist;
-	     ri;
-	     ri = ri->next)
-		tbl[i++] = ri;
-
-	qsort(tbl, n, sizeof(*tbl), cmp_reserve_info);
-
-	dti->reservelist = tbl[0];
-	for (i = 0; i < (n-1); i++)
-		tbl[i]->next = tbl[i+1];
-	tbl[n-1]->next = NULL;
-
-	free(tbl);
-}
-
-static int cmp_prop(const void *ax, const void *bx)
-{
-	const struct property *a, *b;
-
-	a = *((const struct property * const *)ax);
-	b = *((const struct property * const *)bx);
-
-	return strcmp(a->name, b->name);
-}
-
-static void sort_properties(struct node *node)
-{
-	int n = 0, i = 0;
-	struct property *prop, **tbl;
-
-	for_each_property_withdel(node, prop)
-		n++;
-
-	if (n == 0)
-		return;
-
-	tbl = xmalloc(n * sizeof(*tbl));
-
-	for_each_property_withdel(node, prop)
-		tbl[i++] = prop;
-
-	qsort(tbl, n, sizeof(*tbl), cmp_prop);
-
-	node->proplist = tbl[0];
-	for (i = 0; i < (n-1); i++)
-		tbl[i]->next = tbl[i+1];
-	tbl[n-1]->next = NULL;
-
-	free(tbl);
-}
-
-static int cmp_subnode(const void *ax, const void *bx)
-{
-	const struct node *a, *b;
-
-	a = *((const struct node * const *)ax);
-	b = *((const struct node * const *)bx);
-
-	return strcmp(a->name, b->name);
-}
-
-static void sort_subnodes(struct node *node)
-{
-	int n = 0, i = 0;
-	struct node *subnode, **tbl;
-
-	for_each_child_withdel(node, subnode)
-		n++;
-
-	if (n == 0)
-		return;
-
-	tbl = xmalloc(n * sizeof(*tbl));
-
-	for_each_child_withdel(node, subnode)
-		tbl[i++] = subnode;
-
-	qsort(tbl, n, sizeof(*tbl), cmp_subnode);
-
-	node->children = tbl[0];
-	for (i = 0; i < (n-1); i++)
-		tbl[i]->next_sibling = tbl[i+1];
-	tbl[n-1]->next_sibling = NULL;
-
-	free(tbl);
-}
-
-static void sort_node(struct node *node)
-{
-	struct node *c;
-
-	sort_properties(node);
-	sort_subnodes(node);
-	for_each_child_withdel(node, c)
-		sort_node(c);
-}
-
-void sort_tree(struct dt_info *dti)
-{
-	sort_reserve_entries(dti);
-	sort_node(dti->dt);
-}
-
-/* utility helper to avoid code duplication */
-static struct node *build_and_name_child_node(struct node *parent, char *name)
-{
-	struct node *node;
-
-	node = build_node(NULL, NULL);
-	name_node(node, xstrdup(name));
-	add_child(parent, node);
-
-	return node;
-}
-
-static struct node *build_root_node(struct node *dt, char *name)
-{
-	struct node *an;
-
-	an = get_subnode(dt, name);
-	if (!an)
-		an = build_and_name_child_node(dt, name);
-
-	if (!an)
-		die("Could not build root node /%s\n", name);
-
-	return an;
-}
-
-static bool any_label_tree(struct dt_info *dti, struct node *node)
-{
-	struct node *c;
-
-	if (node->labels)
-		return true;
-
-	for_each_child(node, c)
-		if (any_label_tree(dti, c))
-			return true;
-
-	return false;
-}
-
-static void generate_label_tree_internal(struct dt_info *dti,
-					 struct node *an, struct node *node,
-					 bool allocph)
-{
-	struct node *dt = dti->dt;
-	struct node *c;
-	struct property *p;
-	struct label *l;
-
-	/* if there are labels */
-	if (node->labels) {
-
-		/* now add the label in the node */
-		for_each_label(node->labels, l) {
-
-			/* check whether the label already exists */
-			p = get_property(an, l->label);
-			if (p) {
-				fprintf(stderr, "WARNING: label %s already"
-					" exists in /%s", l->label,
-					an->name);
-				continue;
-			}
-
-			/* insert it */
-			p = build_property(l->label,
-				data_copy_mem(node->fullpath,
-						strlen(node->fullpath) + 1));
-			add_property(an, p);
-		}
-
-		/* force allocation of a phandle for this node */
-		if (allocph)
-			(void)get_node_phandle(dt, node);
-	}
-
-	for_each_child(node, c)
-		generate_label_tree_internal(dti, an, c, allocph);
-}
-
-static bool any_fixup_tree(struct dt_info *dti, struct node *node)
-{
-	struct node *c;
-	struct property *prop;
-	struct marker *m;
-
-	for_each_property(node, prop) {
-		m = prop->val.markers;
-		for_each_marker_of_type(m, REF_PHANDLE) {
-			if (!get_node_by_ref(dti->dt, m->ref))
-				return true;
-		}
-	}
-
-	for_each_child(node, c) {
-		if (any_fixup_tree(dti, c))
-			return true;
-	}
-
-	return false;
-}
-
-static void add_fixup_entry(struct dt_info *dti, struct node *fn,
-			    struct node *node, struct property *prop,
-			    struct marker *m)
-{
-	char *entry;
-
-	/* m->ref can only be a REF_PHANDLE, but check anyway */
-	assert(m->type == REF_PHANDLE);
-
-	/* there shouldn't be any ':' in the arguments */
-	if (strchr(node->fullpath, ':') || strchr(prop->name, ':'))
-		die("arguments should not contain ':'\n");
-
-	xasprintf(&entry, "%s:%s:%u",
-			node->fullpath, prop->name, m->offset);
-	append_to_property(fn, m->ref, entry, strlen(entry) + 1);
-
-	free(entry);
-}
-
-static void generate_fixups_tree_internal(struct dt_info *dti,
-					  struct node *fn,
-					  struct node *node)
-{
-	struct node *dt = dti->dt;
-	struct node *c;
-	struct property *prop;
-	struct marker *m;
-	struct node *refnode;
-
-	for_each_property(node, prop) {
-		m = prop->val.markers;
-		for_each_marker_of_type(m, REF_PHANDLE) {
-			refnode = get_node_by_ref(dt, m->ref);
-			if (!refnode)
-				add_fixup_entry(dti, fn, node, prop, m);
-		}
-	}
-
-	for_each_child(node, c)
-		generate_fixups_tree_internal(dti, fn, c);
-}
-
-static bool any_local_fixup_tree(struct dt_info *dti, struct node *node)
-{
-	struct node *c;
-	struct property *prop;
-	struct marker *m;
-
-	for_each_property(node, prop) {
-		m = prop->val.markers;
-		for_each_marker_of_type(m, REF_PHANDLE) {
-			if (get_node_by_ref(dti->dt, m->ref))
-				return true;
-		}
-	}
-
-	for_each_child(node, c) {
-		if (any_local_fixup_tree(dti, c))
-			return true;
-	}
-
-	return false;
-}
-
-static void add_local_fixup_entry(struct dt_info *dti,
-		struct node *lfn, struct node *node,
-		struct property *prop, struct marker *m,
-		struct node *refnode)
-{
-	struct node *wn, *nwn;	/* local fixup node, walk node, new */
-	uint32_t value_32;
-	char **compp;
-	int i, depth;
-
-	/* walk back retreiving depth */
-	depth = 0;
-	for (wn = node; wn; wn = wn->parent)
-		depth++;
-
-	/* allocate name array */
-	compp = xmalloc(sizeof(*compp) * depth);
-
-	/* store names in the array */
-	for (wn = node, i = depth - 1; wn; wn = wn->parent, i--)
-		compp[i] = wn->name;
-
-	/* walk the path components creating nodes if they don't exist */
-	for (wn = lfn, i = 1; i < depth; i++, wn = nwn) {
-		/* if no node exists, create it */
-		nwn = get_subnode(wn, compp[i]);
-		if (!nwn)
-			nwn = build_and_name_child_node(wn, compp[i]);
-	}
-
-	free(compp);
-
-	value_32 = cpu_to_fdt32(m->offset);
-	append_to_property(wn, prop->name, &value_32, sizeof(value_32));
-}
-
-static void generate_local_fixups_tree_internal(struct dt_info *dti,
-						struct node *lfn,
-						struct node *node)
-{
-	struct node *dt = dti->dt;
-	struct node *c;
-	struct property *prop;
-	struct marker *m;
-	struct node *refnode;
-
-	for_each_property(node, prop) {
-		m = prop->val.markers;
-		for_each_marker_of_type(m, REF_PHANDLE) {
-			refnode = get_node_by_ref(dt, m->ref);
-			if (refnode)
-				add_local_fixup_entry(dti, lfn, node, prop, m, refnode);
-		}
-	}
-
-	for_each_child(node, c)
-		generate_local_fixups_tree_internal(dti, lfn, c);
-}
-
-void generate_label_tree(struct dt_info *dti, char *name, bool allocph)
-{
-	if (!any_label_tree(dti, dti->dt))
-		return;
-	generate_label_tree_internal(dti, build_root_node(dti->dt, name),
-				     dti->dt, allocph);
-}
-
-void generate_fixups_tree(struct dt_info *dti, char *name)
-{
-	if (!any_fixup_tree(dti, dti->dt))
-		return;
-	generate_fixups_tree_internal(dti, build_root_node(dti->dt, name),
-				      dti->dt);
-}
-
-void generate_local_fixups_tree(struct dt_info *dti, char *name)
-{
-	if (!any_local_fixup_tree(dti, dti->dt))
-		return;
-	generate_local_fixups_tree_internal(dti, build_root_node(dti->dt, name),
-					    dti->dt);
-}
diff --git a/contrib/dtc/scripts/kup-dtc b/contrib/dtc/scripts/kup-dtc
deleted file mode 100755
index e18abbb8c966..000000000000
--- a/contrib/dtc/scripts/kup-dtc
+++ /dev/null
@@ -1,31 +0,0 @@
-#! /bin/sh
-
-REMOTE_GIT=/pub/scm/utils/dtc/dtc.git
-REMOTE_PATH=/pub/software/utils/dtc
-
-set -e
-
-kup_one () {
-    VERSION="$1"
-
-    TAG="v$VERSION"
-
-    PREFIX="dtc-$VERSION/"
-    TAR="dtc-$VERSION.tar"
-    SIG="$TAR.sign"
-
-    git archive --format=tar --prefix="$PREFIX" -o "$TAR" "$TAG"
-    gpg --detach-sign --armor -o "$SIG" "$TAR"
-
-    ls -l "$TAR"*
-
-    # Verify the signature as a sanity check
-    gpg --verify "$SIG" "$TAR"
-
-    kup put --tar --prefix="$PREFIX" "$REMOTE_GIT" "$TAG" "$SIG" "$REMOTE_PATH/$TAR.gz" 
-}
-
-for version; do
-    kup_one $version
-done
-
diff --git a/contrib/dtc/scripts/setlocalversion b/contrib/dtc/scripts/setlocalversion
deleted file mode 100755
index 82e4993f0a73..000000000000
--- a/contrib/dtc/scripts/setlocalversion
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/bin/sh
-# Print additional version information for non-release trees.
-
-usage() {
-	echo "Usage: $0 [srctree]" >&2
-	exit 1
-}
-
-cd "${1:-.}" || usage
-
-# Check for git and a git repo.
-if head=`git rev-parse --verify HEAD 2>/dev/null`; then
-	# Do we have an untagged version?
-	if git name-rev --tags HEAD | grep -E '^HEAD[[:space:]]+(.*~[0-9]*|undefined)$' > /dev/null; then
-		printf '%s%s' -g `echo "$head" | cut -c1-8`
-	fi
-
-	# Are there uncommitted changes?
-	if git diff-index HEAD | read dummy; then
-		printf '%s' -dirty
-	fi
-fi
diff --git a/contrib/dtc/srcpos.c b/contrib/dtc/srcpos.c
deleted file mode 100644
index 9d38459902f3..000000000000
--- a/contrib/dtc/srcpos.c
+++ /dev/null
@@ -1,302 +0,0 @@
-/*
- * Copyright 2007 Jon Loeliger, Freescale Semiconductor, Inc.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
- *                                                                   USA
- */
-
-#define _GNU_SOURCE
-
-#include <stdio.h>
-
-#include "dtc.h"
-#include "srcpos.h"
-
-/* A node in our list of directories to search for source/include files */
-struct search_path {
-	struct search_path *next;	/* next node in list, NULL for end */
-	const char *dirname;		/* name of directory to search */
-};
-
-/* This is the list of directories that we search for source files */
-static struct search_path *search_path_head, **search_path_tail;
-
-
-static char *get_dirname(const char *path)
-{
-	const char *slash = strrchr(path, '/');
-
-	if (slash) {
-		int len = slash - path;
-		char *dir = xmalloc(len + 1);
-
-		memcpy(dir, path, len);
-		dir[len] = '\0';
-		return dir;
-	}
-	return NULL;
-}
-
-FILE *depfile; /* = NULL */
-struct srcfile_state *current_srcfile; /* = NULL */
-
-/* Detect infinite include recursion. */
-#define MAX_SRCFILE_DEPTH     (100)
-static int srcfile_depth; /* = 0 */
-
-
-/**
- * Try to open a file in a given directory.
- *
- * If the filename is an absolute path, then dirname is ignored. If it is a
- * relative path, then we look in that directory for the file.
- *
- * @param dirname	Directory to look in, or NULL for none
- * @param fname		Filename to look for
- * @param fp		Set to NULL if file did not open
- * @return allocated filename on success (caller must free), NULL on failure
- */
-static char *try_open(const char *dirname, const char *fname, FILE **fp)
-{
-	char *fullname;
-
-	if (!dirname || fname[0] == '/')
-		fullname = xstrdup(fname);
-	else
-		fullname = join_path(dirname, fname);
-
-	*fp = fopen(fullname, "rb");
-	if (!*fp) {
-		free(fullname);
-		fullname = NULL;
-	}
-
-	return fullname;
-}
-
-/**
- * Open a file for read access
- *
- * If it is a relative filename, we search the full search path for it.
- *
- * @param fname	Filename to open
- * @param fp	Returns pointer to opened FILE, or NULL on failure
- * @return pointer to allocated filename, which caller must free
- */
-static char *fopen_any_on_path(const char *fname, FILE **fp)
-{
-	const char *cur_dir = NULL;
-	struct search_path *node;
-	char *fullname;
-
-	/* Try current directory first */
-	assert(fp);
-	if (current_srcfile)
-		cur_dir = current_srcfile->dir;
-	fullname = try_open(cur_dir, fname, fp);
-
-	/* Failing that, try each search path in turn */
-	for (node = search_path_head; !*fp && node; node = node->next)
-		fullname = try_open(node->dirname, fname, fp);
-
-	return fullname;
-}
-
-FILE *srcfile_relative_open(const char *fname, char **fullnamep)
-{
-	FILE *f;
-	char *fullname;
-
-	if (streq(fname, "-")) {
-		f = stdin;
-		fullname = xstrdup("<stdin>");
-	} else {
-		fullname = fopen_any_on_path(fname, &f);
-		if (!f)
-			die("Couldn't open \"%s\": %s\n", fname,
-			    strerror(errno));
-	}
-
-	if (depfile)
-		fprintf(depfile, " %s", fullname);
-
-	if (fullnamep)
-		*fullnamep = fullname;
-	else
-		free(fullname);
-
-	return f;
-}
-
-void srcfile_push(const char *fname)
-{
-	struct srcfile_state *srcfile;
-
-	if (srcfile_depth++ >= MAX_SRCFILE_DEPTH)
-		die("Includes nested too deeply");
-
-	srcfile = xmalloc(sizeof(*srcfile));
-
-	srcfile->f = srcfile_relative_open(fname, &srcfile->name);
-	srcfile->dir = get_dirname(srcfile->name);
-	srcfile->prev = current_srcfile;
-
-	srcfile->lineno = 1;
-	srcfile->colno = 1;
-
-	current_srcfile = srcfile;
-}
-
-bool srcfile_pop(void)
-{
-	struct srcfile_state *srcfile = current_srcfile;
-
-	assert(srcfile);
-
-	current_srcfile = srcfile->prev;
-
-	if (fclose(srcfile->f))
-		die("Error closing \"%s\": %s\n", srcfile->name,
-		    strerror(errno));
-
-	/* FIXME: We allow the srcfile_state structure to leak,
-	 * because it could still be referenced from a location
-	 * variable being carried through the parser somewhere.  To
-	 * fix this we could either allocate all the files from a
-	 * table, or use a pool allocator. */
-
-	return current_srcfile ? true : false;
-}
-
-void srcfile_add_search_path(const char *dirname)
-{
-	struct search_path *node;
-
-	/* Create the node */
-	node = xmalloc(sizeof(*node));
-	node->next = NULL;
-	node->dirname = xstrdup(dirname);
-
-	/* Add to the end of our list */
-	if (search_path_tail)
-		*search_path_tail = node;
-	else
-		search_path_head = node;
-	search_path_tail = &node->next;
-}
-
-/*
- * The empty source position.
- */
-
-struct srcpos srcpos_empty = {
-	.first_line = 0,
-	.first_column = 0,
-	.last_line = 0,
-	.last_column = 0,
-	.file = NULL,
-};
-
-#define TAB_SIZE      8
-
-void srcpos_update(struct srcpos *pos, const char *text, int len)
-{
-	int i;
-
-	pos->file = current_srcfile;
-
-	pos->first_line = current_srcfile->lineno;
-	pos->first_column = current_srcfile->colno;
-
-	for (i = 0; i < len; i++)
-		if (text[i] == '\n') {
-			current_srcfile->lineno++;
-			current_srcfile->colno = 1;
-		} else if (text[i] == '\t') {
-			current_srcfile->colno =
-				ALIGN(current_srcfile->colno, TAB_SIZE);
-		} else {
-			current_srcfile->colno++;
-		}
-
-	pos->last_line = current_srcfile->lineno;
-	pos->last_column = current_srcfile->colno;
-}
-
-struct srcpos *
-srcpos_copy(struct srcpos *pos)
-{
-	struct srcpos *pos_new;
-
-	pos_new = xmalloc(sizeof(struct srcpos));
-	memcpy(pos_new, pos, sizeof(struct srcpos));
-
-	return pos_new;
-}
-
-char *
-srcpos_string(struct srcpos *pos)
-{
-	const char *fname = "<no-file>";
-	char *pos_str;
-
-	if (pos->file && pos->file->name)
-		fname = pos->file->name;
-
-
-	if (pos->first_line != pos->last_line)
-		xasprintf(&pos_str, "%s:%d.%d-%d.%d", fname,
-			  pos->first_line, pos->first_column,
-			  pos->last_line, pos->last_column);
-	else if (pos->first_column != pos->last_column)
-		xasprintf(&pos_str, "%s:%d.%d-%d", fname,
-			  pos->first_line, pos->first_column,
-			  pos->last_column);
-	else
-		xasprintf(&pos_str, "%s:%d.%d", fname,
-			  pos->first_line, pos->first_column);
-
-	return pos_str;
-}
-
-void srcpos_verror(struct srcpos *pos, const char *prefix,
-		   const char *fmt, va_list va)
-{
-	char *srcstr;
-
-	srcstr = srcpos_string(pos);
-
-	fprintf(stderr, "%s: %s ", prefix, srcstr);
-	vfprintf(stderr, fmt, va);
-	fprintf(stderr, "\n");
-
-	free(srcstr);
-}
-
-void srcpos_error(struct srcpos *pos, const char *prefix,
-		  const char *fmt, ...)
-{
-	va_list va;
-
-	va_start(va, fmt);
-	srcpos_verror(pos, prefix, fmt, va);
-	va_end(va);
-}
-
-void srcpos_set_line(char *f, int l)
-{
-	current_srcfile->name = f;
-	current_srcfile->lineno = l;
-}
diff --git a/contrib/dtc/srcpos.h b/contrib/dtc/srcpos.h
deleted file mode 100644
index 2cdfcd82e95e..000000000000
--- a/contrib/dtc/srcpos.h
+++ /dev/null
@@ -1,118 +0,0 @@
-/*
- * Copyright 2007 Jon Loeliger, Freescale Semiconductor, Inc.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
- *                                                                   USA
- */
-
-#ifndef _SRCPOS_H_
-#define _SRCPOS_H_
-
-#include <stdio.h>
-#include <stdbool.h>
-
-struct srcfile_state {
-	FILE *f;
-	char *name;
-	char *dir;
-	int lineno, colno;
-	struct srcfile_state *prev;
-};
-
-extern FILE *depfile; /* = NULL */
-extern struct srcfile_state *current_srcfile; /* = NULL */
-
-/**
- * Open a source file.
- *
- * If the source file is a relative pathname, then it is searched for in the
- * current directory (the directory of the last source file read) and after
- * that in the search path.
- *
- * We work through the search path in order from the first path specified to
- * the last.
- *
- * If the file is not found, then this function does not return, but calls
- * die().
- *
- * @param fname		Filename to search
- * @param fullnamep	If non-NULL, it is set to the allocated filename of the
- *			file that was opened. The caller is then responsible
- *			for freeing the pointer.
- * @return pointer to opened FILE
- */
-FILE *srcfile_relative_open(const char *fname, char **fullnamep);
-
-void srcfile_push(const char *fname);
-bool srcfile_pop(void);
-
-/**
- * Add a new directory to the search path for input files
- *
- * The new path is added at the end of the list.
- *
- * @param dirname	Directory to add
- */
-void srcfile_add_search_path(const char *dirname);
-
-struct srcpos {
-    int first_line;
-    int first_column;
-    int last_line;
-    int last_column;
-    struct srcfile_state *file;
-};
-
-#define YYLTYPE struct srcpos
-
-#define YYLLOC_DEFAULT(Current, Rhs, N)						\
-	do {									\
-		if (N) {							\
-			(Current).first_line = YYRHSLOC(Rhs, 1).first_line;	\
-			(Current).first_column = YYRHSLOC(Rhs, 1).first_column;	\
-			(Current).last_line = YYRHSLOC(Rhs, N).last_line;	\
-			(Current).last_column  = YYRHSLOC (Rhs, N).last_column;	\
-			(Current).file = YYRHSLOC(Rhs, N).file;			\
-		} else {							\
-			(Current).first_line = (Current).last_line =		\
-				YYRHSLOC(Rhs, 0).last_line;			\
-			(Current).first_column = (Current).last_column =	\
-				YYRHSLOC(Rhs, 0).last_column;			\
-			(Current).file = YYRHSLOC (Rhs, 0).file;		\
-		}								\
-	} while (0)
-
-
-/*
- * Fictional source position used for IR nodes that are
- * created without otherwise knowing a true source position.
- * For example,constant definitions from the command line.
- */
-extern struct srcpos srcpos_empty;
-
-extern void srcpos_update(struct srcpos *pos, const char *text, int len);
-extern struct srcpos *srcpos_copy(struct srcpos *pos);
-extern char *srcpos_string(struct srcpos *pos);
-
-extern void srcpos_verror(struct srcpos *pos, const char *prefix,
-			  const char *fmt, va_list va)
-	__attribute__((format(printf, 3, 0)));
-extern void srcpos_error(struct srcpos *pos, const char *prefix,
-			 const char *fmt, ...)
-	__attribute__((format(printf, 3, 4)));
-
-extern void srcpos_set_line(char *f, int l);
-
-#endif /* _SRCPOS_H_ */
diff --git a/contrib/dtc/treesource.c b/contrib/dtc/treesource.c
deleted file mode 100644
index c9d8967969f9..000000000000
--- a/contrib/dtc/treesource.c
+++ /dev/null
@@ -1,284 +0,0 @@
-/*
- * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2005.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
- *                                                                   USA
- */
-
-#include "dtc.h"
-#include "srcpos.h"
-
-extern FILE *yyin;
-extern int yyparse(void);
-extern YYLTYPE yylloc;
-
-struct dt_info *parser_output;
-bool treesource_error;
-
-struct dt_info *dt_from_source(const char *fname)
-{
-	parser_output = NULL;
-	treesource_error = false;
-
-	srcfile_push(fname);
-	yyin = current_srcfile->f;
-	yylloc.file = current_srcfile;
-
-	if (yyparse() != 0)
-		die("Unable to parse input tree\n");
-
-	if (treesource_error)
-		die("Syntax error parsing input tree\n");
-
-	return parser_output;
-}
-
-static void write_prefix(FILE *f, int level)
-{
-	int i;
-
-	for (i = 0; i < level; i++)
-		fputc('\t', f);
-}
-
-static bool isstring(char c)
-{
-	return (isprint((unsigned char)c)
-		|| (c == '\0')
-		|| strchr("\a\b\t\n\v\f\r", c));
-}
-
-static void write_propval_string(FILE *f, struct data val)
-{
-	const char *str = val.val;
-	int i;
-	struct marker *m = val.markers;
-
-	assert(str[val.len-1] == '\0');
-
-	while (m && (m->offset == 0)) {
-		if (m->type == LABEL)
-			fprintf(f, "%s: ", m->ref);
-		m = m->next;
-	}
-	fprintf(f, "\"");
-
-	for (i = 0; i < (val.len-1); i++) {
-		char c = str[i];
-
-		switch (c) {
-		case '\a':
-			fprintf(f, "\\a");
-			break;
-		case '\b':
-			fprintf(f, "\\b");
-			break;
-		case '\t':
-			fprintf(f, "\\t");
-			break;
-		case '\n':
-			fprintf(f, "\\n");
-			break;
-		case '\v':
-			fprintf(f, "\\v");
-			break;
-		case '\f':
-			fprintf(f, "\\f");
-			break;
-		case '\r':
-			fprintf(f, "\\r");
-			break;
-		case '\\':
-			fprintf(f, "\\\\");
-			break;
-		case '\"':
-			fprintf(f, "\\\"");
-			break;
-		case '\0':
-			fprintf(f, "\", ");
-			while (m && (m->offset <= (i + 1))) {
-				if (m->type == LABEL) {
-					assert(m->offset == (i+1));
-					fprintf(f, "%s: ", m->ref);
-				}
-				m = m->next;
-			}
-			fprintf(f, "\"");
-			break;
-		default:
-			if (isprint((unsigned char)c))
-				fprintf(f, "%c", c);
-			else
-				fprintf(f, "\\x%02hhx", c);
-		}
-	}
-	fprintf(f, "\"");
-
-	/* Wrap up any labels at the end of the value */
-	for_each_marker_of_type(m, LABEL) {
-		assert (m->offset == val.len);
-		fprintf(f, " %s:", m->ref);
-	}
-}
-
-static void write_propval_cells(FILE *f, struct data val)
-{
-	void *propend = val.val + val.len;
-	cell_t *cp = (cell_t *)val.val;
-	struct marker *m = val.markers;
-
-	fprintf(f, "<");
-	for (;;) {
-		while (m && (m->offset <= ((char *)cp - val.val))) {
-			if (m->type == LABEL) {
-				assert(m->offset == ((char *)cp - val.val));
-				fprintf(f, "%s: ", m->ref);
-			}
-			m = m->next;
-		}
-
-		fprintf(f, "0x%x", fdt32_to_cpu(*cp++));
-		if ((void *)cp >= propend)
-			break;
-		fprintf(f, " ");
-	}
-
-	/* Wrap up any labels at the end of the value */
-	for_each_marker_of_type(m, LABEL) {
-		assert (m->offset == val.len);
-		fprintf(f, " %s:", m->ref);
-	}
-	fprintf(f, ">");
-}
-
-static void write_propval_bytes(FILE *f, struct data val)
-{
-	void *propend = val.val + val.len;
-	const char *bp = val.val;
-	struct marker *m = val.markers;
-
-	fprintf(f, "[");
-	for (;;) {
-		while (m && (m->offset == (bp-val.val))) {
-			if (m->type == LABEL)
-				fprintf(f, "%s: ", m->ref);
-			m = m->next;
-		}
-
-		fprintf(f, "%02hhx", (unsigned char)(*bp++));
-		if ((const void *)bp >= propend)
-			break;
-		fprintf(f, " ");
-	}
-
-	/* Wrap up any labels at the end of the value */
-	for_each_marker_of_type(m, LABEL) {
-		assert (m->offset == val.len);
-		fprintf(f, " %s:", m->ref);
-	}
-	fprintf(f, "]");
-}
-
-static void write_propval(FILE *f, struct property *prop)
-{
-	int len = prop->val.len;
-	const char *p = prop->val.val;
-	struct marker *m = prop->val.markers;
-	int nnotstring = 0, nnul = 0;
-	int nnotstringlbl = 0, nnotcelllbl = 0;
-	int i;
-
-	if (len == 0) {
-		fprintf(f, ";\n");
-		return;
-	}
-
-	for (i = 0; i < len; i++) {
-		if (! isstring(p[i]))
-			nnotstring++;
-		if (p[i] == '\0')
-			nnul++;
-	}
-
-	for_each_marker_of_type(m, LABEL) {
-		if ((m->offset > 0) && (prop->val.val[m->offset - 1] != '\0'))
-			nnotstringlbl++;
-		if ((m->offset % sizeof(cell_t)) != 0)
-			nnotcelllbl++;
-	}
-
-	fprintf(f, " = ");
-	if ((p[len-1] == '\0') && (nnotstring == 0) && (nnul < (len-nnul))
-	    && (nnotstringlbl == 0)) {
-		write_propval_string(f, prop->val);
-	} else if (((len % sizeof(cell_t)) == 0) && (nnotcelllbl == 0)) {
-		write_propval_cells(f, prop->val);
-	} else {
-		write_propval_bytes(f, prop->val);
-	}
-
-	fprintf(f, ";\n");
-}
-
-static void write_tree_source_node(FILE *f, struct node *tree, int level)
-{
-	struct property *prop;
-	struct node *child;
-	struct label *l;
-
-	write_prefix(f, level);
-	for_each_label(tree->labels, l)
-		fprintf(f, "%s: ", l->label);
-	if (tree->name && (*tree->name))
-		fprintf(f, "%s {\n", tree->name);
-	else
-		fprintf(f, "/ {\n");
-
-	for_each_property(tree, prop) {
-		write_prefix(f, level+1);
-		for_each_label(prop->labels, l)
-			fprintf(f, "%s: ", l->label);
-		fprintf(f, "%s", prop->name);
-		write_propval(f, prop);
-	}
-	for_each_child(tree, child) {
-		fprintf(f, "\n");
-		write_tree_source_node(f, child, level+1);
-	}
-	write_prefix(f, level);
-	fprintf(f, "};\n");
-}
-
-
-void dt_to_source(FILE *f, struct dt_info *dti)
-{
-	struct reserve_info *re;
-
-	fprintf(f, "/dts-v1/;\n\n");
-
-	for (re = dti->reservelist; re; re = re->next) {
-		struct label *l;
-
-		for_each_label(re->labels, l)
-			fprintf(f, "%s: ", l->label);
-		fprintf(f, "/memreserve/\t0x%016llx 0x%016llx;\n",
-			(unsigned long long)re->re.address,
-			(unsigned long long)re->re.size);
-	}
-
-	write_tree_source_node(f, dti->dt, 0);
-}
-
diff --git a/contrib/dtc/util.c b/contrib/dtc/util.c
deleted file mode 100644
index 3550f86bd6df..000000000000
--- a/contrib/dtc/util.c
+++ /dev/null
@@ -1,473 +0,0 @@
-/*
- * Copyright 2011 The Chromium Authors, All Rights Reserved.
- * Copyright 2008 Jon Loeliger, Freescale Semiconductor, Inc.
- *
- * util_is_printable_string contributed by
- *	Pantelis Antoniou <pantelis.antoniou AT gmail.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
- *                                                                   USA
- */
-
-#include <ctype.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-#include <assert.h>
-
-#include <errno.h>
-#include <fcntl.h>
-#include <unistd.h>
-
-#include "libfdt.h"
-#include "util.h"
-#include "version_gen.h"
-
-char *xstrdup(const char *s)
-{
-	int len = strlen(s) + 1;
-	char *d = xmalloc(len);
-
-	memcpy(d, s, len);
-
-	return d;
-}
-
-/* based in part from (3) vsnprintf */
-int xasprintf(char **strp, const char *fmt, ...)
-{
-	int n, size = 128;	/* start with 128 bytes */
-	char *p;
-	va_list ap;
-
-	/* initial pointer is NULL making the fist realloc to be malloc */
-	p = NULL;
-	while (1) {
-		p = xrealloc(p, size);
-
-		/* Try to print in the allocated space. */
-		va_start(ap, fmt);
-		n = vsnprintf(p, size, fmt, ap);
-		va_end(ap);
-
-		/* If that worked, return the string. */
-		if (n > -1 && n < size)
-			break;
-		/* Else try again with more space. */
-		if (n > -1)	/* glibc 2.1 */
-			size = n + 1; /* precisely what is needed */
-		else		/* glibc 2.0 */
-			size *= 2; /* twice the old size */
-	}
-	*strp = p;
-	return strlen(p);
-}
-
-char *join_path(const char *path, const char *name)
-{
-	int lenp = strlen(path);
-	int lenn = strlen(name);
-	int len;
-	int needslash = 1;
-	char *str;
-
-	len = lenp + lenn + 2;
-	if ((lenp > 0) && (path[lenp-1] == '/')) {
-		needslash = 0;
-		len--;
-	}
-
-	str = xmalloc(len);
-	memcpy(str, path, lenp);
-	if (needslash) {
-		str[lenp] = '/';
-		lenp++;
-	}
-	memcpy(str+lenp, name, lenn+1);
-	return str;
-}
-
-bool util_is_printable_string(const void *data, int len)
-{
-	const char *s = data;
-	const char *ss, *se;
-
-	/* zero length is not */
-	if (len == 0)
-		return 0;
-
-	/* must terminate with zero */
-	if (s[len - 1] != '\0')
-		return 0;
-
-	se = s + len;
-
-	while (s < se) {
-		ss = s;
-		while (s < se && *s && isprint((unsigned char)*s))
-			s++;
-
-		/* not zero, or not done yet */
-		if (*s != '\0' || s == ss)
-			return 0;
-
-		s++;
-	}
-
-	return 1;
-}
-
-/*
- * Parse a octal encoded character starting at index i in string s.  The
- * resulting character will be returned and the index i will be updated to
- * point at the character directly after the end of the encoding, this may be
- * the '\0' terminator of the string.
- */
-static char get_oct_char(const char *s, int *i)
-{
-	char x[4];
-	char *endx;
-	long val;
-
-	x[3] = '\0';
-	strncpy(x, s + *i, 3);
-
-	val = strtol(x, &endx, 8);
-
-	assert(endx > x);
-
-	(*i) += endx - x;
-	return val;
-}
-
-/*
- * Parse a hexadecimal encoded character starting at index i in string s.  The
- * resulting character will be returned and the index i will be updated to
- * point at the character directly after the end of the encoding, this may be
- * the '\0' terminator of the string.
- */
-static char get_hex_char(const char *s, int *i)
-{
-	char x[3];
-	char *endx;
-	long val;
-
-	x[2] = '\0';
-	strncpy(x, s + *i, 2);
-
-	val = strtol(x, &endx, 16);
-	if (!(endx  > x))
-		die("\\x used with no following hex digits\n");
-
-	(*i) += endx - x;
-	return val;
-}
-
-char get_escape_char(const char *s, int *i)
-{
-	char	c = s[*i];
-	int	j = *i + 1;
-	char	val;
-
-	switch (c) {
-	case 'a':
-		val = '\a';
-		break;
-	case 'b':
-		val = '\b';
-		break;
-	case 't':
-		val = '\t';
-		break;
-	case 'n':
-		val = '\n';
-		break;
-	case 'v':
-		val = '\v';
-		break;
-	case 'f':
-		val = '\f';
-		break;
-	case 'r':
-		val = '\r';
-		break;
-	case '0':
-	case '1':
-	case '2':
-	case '3':
-	case '4':
-	case '5':
-	case '6':
-	case '7':
-		j--; /* need to re-read the first digit as
-		      * part of the octal value */
-		val = get_oct_char(s, &j);
-		break;
-	case 'x':
-		val = get_hex_char(s, &j);
-		break;
-	default:
-		val = c;
-	}
-
-	(*i) = j;
-	return val;
-}
-
-int utilfdt_read_err_len(const char *filename, char **buffp, off_t *len)
-{
-	int fd = 0;	/* assume stdin */
-	char *buf = NULL;
-	off_t bufsize = 1024, offset = 0;
-	int ret = 0;
-
-	*buffp = NULL;
-	if (strcmp(filename, "-") != 0) {
-		fd = open(filename, O_RDONLY);
-		if (fd < 0)
-			return errno;
-	}
-
-	/* Loop until we have read everything */
-	buf = xmalloc(bufsize);
-	do {
-		/* Expand the buffer to hold the next chunk */
-		if (offset == bufsize) {
-			bufsize *= 2;
-			buf = xrealloc(buf, bufsize);
-		}
-
-		ret = read(fd, &buf[offset], bufsize - offset);
-		if (ret < 0) {
-			ret = errno;
-			break;
-		}
-		offset += ret;
-	} while (ret != 0);
-
-	/* Clean up, including closing stdin; return errno on error */
-	close(fd);
-	if (ret)
-		free(buf);
-	else
-		*buffp = buf;
-	*len = bufsize;
-	return ret;
-}
-
-int utilfdt_read_err(const char *filename, char **buffp)
-{
-	off_t len;
-	return utilfdt_read_err_len(filename, buffp, &len);
-}
-
-char *utilfdt_read_len(const char *filename, off_t *len)
-{
-	char *buff;
-	int ret = utilfdt_read_err_len(filename, &buff, len);
-
-	if (ret) {
-		fprintf(stderr, "Couldn't open blob from '%s': %s\n", filename,
-			strerror(ret));
-		return NULL;
-	}
-	/* Successful read */
-	return buff;
-}
-
-char *utilfdt_read(const char *filename)
-{
-	off_t len;
-	return utilfdt_read_len(filename, &len);
-}
-
-int utilfdt_write_err(const char *filename, const void *blob)
-{
-	int fd = 1;	/* assume stdout */
-	int totalsize;
-	int offset;
-	int ret = 0;
-	const char *ptr = blob;
-
-	if (strcmp(filename, "-") != 0) {
-		fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666);
-		if (fd < 0)
-			return errno;
-	}
-
-	totalsize = fdt_totalsize(blob);
-	offset = 0;
-
-	while (offset < totalsize) {
-		ret = write(fd, ptr + offset, totalsize - offset);
-		if (ret < 0) {
-			ret = -errno;
-			break;
-		}
-		offset += ret;
-	}
-	/* Close the file/stdin; return errno on error */
-	if (fd != 1)
-		close(fd);
-	return ret < 0 ? -ret : 0;
-}
-
-
-int utilfdt_write(const char *filename, const void *blob)
-{
-	int ret = utilfdt_write_err(filename, blob);
-
-	if (ret) {
-		fprintf(stderr, "Couldn't write blob to '%s': %s\n", filename,
-			strerror(ret));
-	}
-	return ret ? -1 : 0;
-}
-
-int utilfdt_decode_type(const char *fmt, int *type, int *size)
-{
-	int qualifier = 0;
-
-	if (!*fmt)
-		return -1;
-
-	/* get the conversion qualifier */
-	*size = -1;
-	if (strchr("hlLb", *fmt)) {
-		qualifier = *fmt++;
-		if (qualifier == *fmt) {
-			switch (*fmt++) {
-/* TODO:		case 'l': qualifier = 'L'; break;*/
-			case 'h':
-				qualifier = 'b';
-				break;
-			}
-		}
-	}
-
-	/* we should now have a type */
-	if ((*fmt == '\0') || !strchr("iuxs", *fmt))
-		return -1;
-
-	/* convert qualifier (bhL) to byte size */
-	if (*fmt != 's')
-		*size = qualifier == 'b' ? 1 :
-				qualifier == 'h' ? 2 :
-				qualifier == 'l' ? 4 : -1;
-	*type = *fmt++;
-
-	/* that should be it! */
-	if (*fmt)
-		return -1;
-	return 0;
-}
-
-void utilfdt_print_data(const char *data, int len)
-{
-	int i;
-	const char *s;
-
-	/* no data, don't print */
-	if (len == 0)
-		return;
-
-	if (util_is_printable_string(data, len)) {
-		printf(" = ");
-
-		s = data;
-		do {
-			printf("\"%s\"", s);
-			s += strlen(s) + 1;
-			if (s < data + len)
-				printf(", ");
-		} while (s < data + len);
-
-	} else if ((len % 4) == 0) {
-		const uint32_t *cell = (const uint32_t *)data;
-
-		printf(" = <");
-		for (i = 0, len /= 4; i < len; i++)
-			printf("0x%08x%s", fdt32_to_cpu(cell[i]),
-			       i < (len - 1) ? " " : "");
-		printf(">");
-	} else {
-		const unsigned char *p = (const unsigned char *)data;
-		printf(" = [");
-		for (i = 0; i < len; i++)
-			printf("%02x%s", *p++, i < len - 1 ? " " : "");
-		printf("]");
-	}
-}
-
-void util_version(void)
-{
-	printf("Version: %s\n", DTC_VERSION);
-	exit(0);
-}
-
-void util_usage(const char *errmsg, const char *synopsis,
-		const char *short_opts, struct option const long_opts[],
-		const char * const opts_help[])
-{
-	FILE *fp = errmsg ? stderr : stdout;
-	const char a_arg[] = "<arg>";
-	size_t a_arg_len = strlen(a_arg) + 1;
-	size_t i;
-	int optlen;
-
-	fprintf(fp,
-		"Usage: %s\n"
-		"\n"
-		"Options: -[%s]\n", synopsis, short_opts);
-
-	/* prescan the --long opt length to auto-align */
-	optlen = 0;
-	for (i = 0; long_opts[i].name; ++i) {
-		/* +1 is for space between --opt and help text */
-		int l = strlen(long_opts[i].name) + 1;
-		if (long_opts[i].has_arg == a_argument)
-			l += a_arg_len;
-		if (optlen < l)
-			optlen = l;
-	}
-
-	for (i = 0; long_opts[i].name; ++i) {
-		/* helps when adding new applets or options */
-		assert(opts_help[i] != NULL);
-
-		/* first output the short flag if it has one */
-		if (long_opts[i].val > '~')
-			fprintf(fp, "      ");
-		else
-			fprintf(fp, "  -%c, ", long_opts[i].val);
-
-		/* then the long flag */
-		if (long_opts[i].has_arg == no_argument)
-			fprintf(fp, "--%-*s", optlen, long_opts[i].name);
-		else
-			fprintf(fp, "--%s %s%*s", long_opts[i].name, a_arg,
-				(int)(optlen - strlen(long_opts[i].name) - a_arg_len), "");
-
-		/* finally the help text */
-		fprintf(fp, "%s\n", opts_help[i]);
-	}
-
-	if (errmsg) {
-		fprintf(fp, "\nError: %s\n", errmsg);
-		exit(EXIT_FAILURE);
-	} else
-		exit(EXIT_SUCCESS);
-}
diff --git a/contrib/dtc/util.h b/contrib/dtc/util.h
deleted file mode 100644
index bc3d223fa6e3..000000000000
--- a/contrib/dtc/util.h
+++ /dev/null
@@ -1,265 +0,0 @@
-#ifndef _UTIL_H
-#define _UTIL_H
-
-#include <stdarg.h>
-#include <stdbool.h>
-#include <getopt.h>
-
-/*
- * Copyright 2011 The Chromium Authors, All Rights Reserved.
- * Copyright 2008 Jon Loeliger, Freescale Semiconductor, Inc.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
- *                                                                   USA
- */
-
-#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
-
-#ifdef __GNUC__
-static inline void
-__attribute__((noreturn)) __attribute__((format (printf, 1, 2)))
-die(const char *str, ...)
-#else
-static inline void die(const char *str, ...)
-#endif
-{
-	va_list ap;
-
-	va_start(ap, str);
-	fprintf(stderr, "FATAL ERROR: ");
-	vfprintf(stderr, str, ap);
-	va_end(ap);
-	exit(1);
-}
-
-static inline void *xmalloc(size_t len)
-{
-	void *new = malloc(len);
-
-	if (!new)
-		die("malloc() failed\n");
-
-	return new;
-}
-
-static inline void *xrealloc(void *p, size_t len)
-{
-	void *new = realloc(p, len);
-
-	if (!new)
-		die("realloc() failed (len=%zd)\n", len);
-
-	return new;
-}
-
-extern char *xstrdup(const char *s);
-
-#ifdef __GNUC__
-extern int __attribute__((format (printf, 2, 3)))
-xasprintf(char **strp, const char *fmt, ...);
-#else
-extern int xasprintf(char **strp, const char *fmt, ...);
-#endif
-extern char *join_path(const char *path, const char *name);
-
-/**
- * Check a property of a given length to see if it is all printable and
- * has a valid terminator. The property can contain either a single string,
- * or multiple strings each of non-zero length.
- *
- * @param data	The string to check
- * @param len	The string length including terminator
- * @return 1 if a valid printable string, 0 if not
- */
-bool util_is_printable_string(const void *data, int len);
-
-/*
- * Parse an escaped character starting at index i in string s.  The resulting
- * character will be returned and the index i will be updated to point at the
- * character directly after the end of the encoding, this may be the '\0'
- * terminator of the string.
- */
-char get_escape_char(const char *s, int *i);
-
-/**
- * Read a device tree file into a buffer. This will report any errors on
- * stderr.
- *
- * @param filename	The filename to read, or - for stdin
- * @return Pointer to allocated buffer containing fdt, or NULL on error
- */
-char *utilfdt_read(const char *filename);
-
-/**
- * Like utilfdt_read(), but also passes back the size of the file read.
- *
- * @param len		If non-NULL, the amount of data we managed to read
- */
-char *utilfdt_read_len(const char *filename, off_t *len);
-
-/**
- * Read a device tree file into a buffer. Does not report errors, but only
- * returns them. The value returned can be passed to strerror() to obtain
- * an error message for the user.
- *
- * @param filename	The filename to read, or - for stdin
- * @param buffp		Returns pointer to buffer containing fdt
- * @return 0 if ok, else an errno value representing the error
- */
-int utilfdt_read_err(const char *filename, char **buffp);
-
-/**
- * Like utilfdt_read_err(), but also passes back the size of the file read.
- *
- * @param len		If non-NULL, the amount of data we managed to read
- */
-int utilfdt_read_err_len(const char *filename, char **buffp, off_t *len);
-
-/**
- * Write a device tree buffer to a file. This will report any errors on
- * stderr.
- *
- * @param filename	The filename to write, or - for stdout
- * @param blob		Poiner to buffer containing fdt
- * @return 0 if ok, -1 on error
- */
-int utilfdt_write(const char *filename, const void *blob);
-
-/**
- * Write a device tree buffer to a file. Does not report errors, but only
- * returns them. The value returned can be passed to strerror() to obtain
- * an error message for the user.
- *
- * @param filename	The filename to write, or - for stdout
- * @param blob		Poiner to buffer containing fdt
- * @return 0 if ok, else an errno value representing the error
- */
-int utilfdt_write_err(const char *filename, const void *blob);
-
-/**
- * Decode a data type string. The purpose of this string
- *
- * The string consists of an optional character followed by the type:
- *	Modifier characters:
- *		hh or b	1 byte
- *		h	2 byte
- *		l	4 byte, default
- *
- *	Type character:
- *		s	string
- *		i	signed integer
- *		u	unsigned integer
- *		x	hex
- *
- * TODO: Implement ll modifier (8 bytes)
- * TODO: Implement o type (octal)
- *
- * @param fmt		Format string to process
- * @param type		Returns type found(s/d/u/x), or 0 if none
- * @param size		Returns size found(1,2,4,8) or 4 if none
- * @return 0 if ok, -1 on error (no type given, or other invalid format)
- */
-int utilfdt_decode_type(const char *fmt, int *type, int *size);
-
-/*
- * This is a usage message fragment for the -t option. It is the format
- * supported by utilfdt_decode_type.
- */
-
-#define USAGE_TYPE_MSG \
-	"<type>\ts=string, i=int, u=unsigned, x=hex\n" \
-	"\tOptional modifier prefix:\n" \
-	"\t\thh or b=byte, h=2 byte, l=4 byte (default)";
-
-/**
- * Print property data in a readable format to stdout
- *
- * Properties that look like strings will be printed as strings. Otherwise
- * the data will be displayed either as cells (if len is a multiple of 4
- * bytes) or bytes.
- *
- * If len is 0 then this function does nothing.
- *
- * @param data	Pointers to property data
- * @param len	Length of property data
- */
-void utilfdt_print_data(const char *data, int len);
-
-/**
- * Show source version and exit
- */
-void util_version(void) __attribute__((noreturn));
-
-/**
- * Show usage and exit
- *
- * This helps standardize the output of various utils.  You most likely want
- * to use the usage() helper below rather than call this.
- *
- * @param errmsg	If non-NULL, an error message to display
- * @param synopsis	The initial example usage text (and possible examples)
- * @param short_opts	The string of short options
- * @param long_opts	The structure of long options
- * @param opts_help	An array of help strings (should align with long_opts)
- */
-void util_usage(const char *errmsg, const char *synopsis,
-		const char *short_opts, struct option const long_opts[],
-		const char * const opts_help[]) __attribute__((noreturn));
-
-/**
- * Show usage and exit
- *
- * If you name all your usage variables with usage_xxx, then you can call this
- * help macro rather than expanding all arguments yourself.
- *
- * @param errmsg	If non-NULL, an error message to display
- */
-#define usage(errmsg) \
-	util_usage(errmsg, usage_synopsis, usage_short_opts, \
-		   usage_long_opts, usage_opts_help)
-
-/**
- * Call getopt_long() with standard options
- *
- * Since all util code runs getopt in the same way, provide a helper.
- */
-#define util_getopt_long() getopt_long(argc, argv, usage_short_opts, \
-				       usage_long_opts, NULL)
-
-/* Helper for aligning long_opts array */
-#define a_argument required_argument
-
-/* Helper for usage_short_opts string constant */
-#define USAGE_COMMON_SHORT_OPTS "hV"
-
-/* Helper for usage_long_opts option array */
-#define USAGE_COMMON_LONG_OPTS \
-	{"help",      no_argument, NULL, 'h'}, \
-	{"version",   no_argument, NULL, 'V'}, \
-	{NULL,        no_argument, NULL, 0x0}
-
-/* Helper for usage_opts_help array */
-#define USAGE_COMMON_OPTS_HELP \
-	"Print this help and exit", \
-	"Print version and exit", \
-	NULL
-
-/* Helper for getopt case statements */
-#define case_USAGE_COMMON_FLAGS \
-	case 'h': usage(NULL); \
-	case 'V': util_version(); \
-	case '?': usage("unknown option");
-
-#endif /* _UTIL_H */
diff --git a/gnu/usr.bin/Makefile b/gnu/usr.bin/Makefile
index 98fffa9c08d6..c642b83a61db 100644
--- a/gnu/usr.bin/Makefile
+++ b/gnu/usr.bin/Makefile
@@ -12,7 +12,6 @@ SUBDIR.${MK_GNU_DIFF}+=	diff3
 SUBDIR.${MK_GNU_GREP}+=	grep
 SUBDIR.${MK_GDB}+=	gdb
 SUBDIR_DEPEND_gdb=	binutils
-SUBDIR.${MK_GPL_DTC}+=	dtc
 SUBDIR.${MK_TESTS}+=	tests
 
 SUBDIR_PARALLEL=
diff --git a/gnu/usr.bin/dtc/Makefile b/gnu/usr.bin/dtc/Makefile
deleted file mode 100644
index d9fcc6404a91..000000000000
--- a/gnu/usr.bin/dtc/Makefile
+++ /dev/null
@@ -1,51 +0,0 @@
-# $FreeBSD$
-
-.include <bsd.own.mk>
-
-DTCDIR=	${.CURDIR}/../../../contrib/dtc
-_LIBFDTDIR= ${.CURDIR}/../../../sys/contrib/libfdt
-.PATH: ${DTCDIR} ${_LIBFDTDIR}
-
-PROG=	dtc
-
-SRCS=	dtc.c checks.c fstree.c livetree.c treesource.c data.c \
-	flattree.c srcpos.c util.c \
-	fdt.c fdt_ro.c fdt_rw.c fdt_strerror.c \
-	fdt_sw.c fdt_wip.c ${DTCVERSIONFILE}
-
-WARNS?=	2
-CFLAGS+= -I. -I${.CURDIR} -I${DTCDIR} -I${_LIBFDTDIR}
-
-VERSIONMAJ!= awk '/^VERSION =/ { print $$3 }' ${DTCDIR}/Makefile
-VERSIONMIN!= awk '/^PATCHLEVEL =/ { print $$3 }' ${DTCDIR}/Makefile
-VERSIONSUB!= awk '/^SUBLEVEL =/ { print $$3 }' ${DTCDIR}/Makefile
-VERSIONEXTRA=
-
-DTCVERSION:=	${VERSIONMAJ}.${VERSIONMIN}.${VERSIONSUB}${VERSIONEXTRA}
-DTCVERSIONFILE:=	version_gen.h
-
-MAN=
-
-BISON=	yacc
-LEX=	lex
-
-OBJS+= dtc-parser.tab.o dtc-lexer.lex.o
-
-CLEANFILES+= dtc-parser.tab.o dtc-lexer.lex.o dtc-parser.tab.c \
-		dtc-parser.tab.h dtc-lexer.lex.c ${DTCVERSIONFILE}
-
-${DTCVERSIONFILE}: ${DTCDIR}/Makefile
-	@echo '#define DTC_VERSION "DTC ${DTCVERSION}"' > ${DTCVERSIONFILE}
-
-dtc-parser.tab.o:	dtc-parser.tab.c dtc-parser.tab.h
-dtc-lexer.lex.o:	dtc-lexer.lex.c dtc-parser.tab.h
-
-dtc-parser.tab.c:	dtc-parser.y
-	${BISON} -o$@ -d ${DTCDIR}/dtc-parser.y
-
-dtc-parser.tab.h:	dtc-parser.tab.c
-
-dtc-lexer.lex.c: dtc-lexer.l
-	${LEX} -o$@ ${DTCDIR}/dtc-lexer.l
-
-.include <bsd.prog.mk>
diff --git a/gnu/usr.bin/dtc/Makefile.depend b/gnu/usr.bin/dtc/Makefile.depend
deleted file mode 100644
index d084433f911c..000000000000
--- a/gnu/usr.bin/dtc/Makefile.depend
+++ /dev/null
@@ -1,18 +0,0 @@
-# $FreeBSD$
-# Autogenerated - do NOT edit!
-
-DIRDEPS = \
-	gnu/lib/csu \
-	include \
-	include/xlocale \
-	lib/${CSU_DIR} \
-	lib/libc \
-	lib/libcompiler_rt \
-	usr.bin/yacc.host \
-
-
-.include <dirdeps.mk>
-
-.if ${DEP_RELDIR} == ${_DEP_RELDIR}
-# local dependencies - needed for -jN in clean tree
-.endif
diff --git a/share/mk/src.opts.mk b/share/mk/src.opts.mk
index e10c3259054e..287ac5559f63 100644
--- a/share/mk/src.opts.mk
+++ b/share/mk/src.opts.mk
@@ -201,7 +201,6 @@ __DEFAULT_NO_OPTIONS = \
     DTRACE_TESTS \
     EXPERIMENTAL \
     GNU_GREP_COMPAT \
-    GPL_DTC \
     HESIOD \
     LIBSOFT \
     LOADER_FIREWIRE \
diff --git a/targets/pseudo/userland/Makefile.depend b/targets/pseudo/userland/Makefile.depend
index 6efd31c53015..ead4d94823bd 100644
--- a/targets/pseudo/userland/Makefile.depend
+++ b/targets/pseudo/userland/Makefile.depend
@@ -188,6 +188,7 @@ DIRDEPS+= \
 	usr.bin/dirname \
 	usr.bin/dpv \
 	usr.bin/drill \
+	usr.bin/dtc \
 	usr.bin/du \
 	usr.bin/ee \
 	usr.bin/elf2aout \
@@ -855,10 +856,6 @@ DIRDEPS+= usr.sbin/cxgbetool
 DIRDEPS+= usr.sbin/mlx5tool
 .endif
 
-.if ${MK_GPL_DTC} != "yes"
-DIRDEPS+= usr.bin/dtc
-.endif
-
 DIRDEPS+= ${DIRDEPS.${MACHINE}:U}
 
 
diff --git a/targets/pseudo/userland/gnu/Makefile.depend b/targets/pseudo/userland/gnu/Makefile.depend
index db1410c8b737..d0007cbc8efd 100644
--- a/targets/pseudo/userland/gnu/Makefile.depend
+++ b/targets/pseudo/userland/gnu/Makefile.depend
@@ -1,8 +1,6 @@
 # $FreeBSD$
 
-.if !defined(MK_GPL_DTC)
 .include "${SRCTOP}/share/mk/src.opts.mk"
-.endif
 
 # This file is not autogenerated - take care!
 
@@ -33,8 +31,4 @@ DIRDEPS = \
 	gnu/usr.bin/grep \
 	gnu/usr.bin/grep/doc \
 
-.if ${MK_GPL_DTC} != "no"
-DIRDEPS+= gnu/usr.bin/dtc
-.endif
-
 .include <dirdeps.mk>
diff --git a/tools/build/options/WITHOUT_GPL_DTC b/tools/build/options/WITHOUT_GPL_DTC
deleted file mode 100644
index 3d9169611581..000000000000
--- a/tools/build/options/WITHOUT_GPL_DTC
+++ /dev/null
@@ -1,3 +0,0 @@
-.\" $FreeBSD$
-Set to build the BSD licensed version of the device tree compiler rather
-than the GPLed one from elinux.org.
diff --git a/tools/build/options/WITH_GPL_DTC b/tools/build/options/WITH_GPL_DTC
deleted file mode 100644
index e5a1e957798d..000000000000
--- a/tools/build/options/WITH_GPL_DTC
+++ /dev/null
@@ -1,3 +0,0 @@
-.\" $FreeBSD$
-Set to build the GPL'd version of the device tree compiler from elinux.org,
-instead of the BSD licensed one.
diff --git a/usr.bin/Makefile b/usr.bin/Makefile
index b2e6b0c16a90..7528ce8455a1 100644
--- a/usr.bin/Makefile
+++ b/usr.bin/Makefile
@@ -210,11 +210,9 @@ SUBDIR.${MK_GAMES}+=	number
 SUBDIR.${MK_GAMES}+=	pom
 SUBDIR.${MK_GAMES}+=	primes
 SUBDIR.${MK_GAMES}+=	random
-.if ${MK_GPL_DTC} != "yes"
 .if ${COMPILER_FEATURES:Mc++11}
 SUBDIR+=	dtc
 .endif
-.endif
 SUBDIR.${MK_HESIOD}+=	hesinfo
 SUBDIR.${MK_ICONV}+=	iconv
 SUBDIR.${MK_ICONV}+=	mkcsmapper