Merge DTC-d75b33af.

This is a split merge because of non-uniform licensing of the DTC package
contents and the way these components will be used in the FreeBSD environment.

The original DTC package is composed of the following two major pieces:

1. sys/contrib/libfdt (BSD [dual] license)
2. contrib/dtc (GPLv2)

The libfdt component is going to be shared in all aspects of the environment:
- /boot/loader
- kernel
- dtc (the device tree compiler proper, userspace tool)

1 files changed, 245 insertions, 0 deletions

diff --git a/contrib/dtc/Makefile b/contrib/dtc/Makefile
new file mode 100644
index 000000000000..d7549b22c6b3
--- /dev/null
+++ b/contrib/dtc/Makefile
@@ -0,0 +1,245 @@
+#
+# 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 = 2
+SUBLEVEL = 0
+EXTRAVERSION =
+LOCAL_VERSION =
+CONFIG_LOCALVERSION =
+
+CPPFLAGS = -I libfdt
+CFLAGS = -Wall -g -Os -fPIC -Wpointer-arith -Wcast-qual
+
+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.ftdump
+
+BIN += convert-dtsv0
+BIN += dtc
+BIN += ftdump
+
+
+all: $(BIN) libfdt
+
+
+ifneq ($(DEPTARGETS),)
+-include $(DTC_OBJS:%.o=%.d)
+-include $(CONVERT_OBJS:%.o=%.d)
+-include $(FTDUMP_OBJS:%.o=%.d)
+endif
+
+
+
+#
+# Rules for libfdt
+#
+LIBFDT_objdir = libfdt
+LIBFDT_srcdir = libfdt
+LIBFDT_archive = $(LIBFDT_objdir)/libfdt.a
+LIBFDT_lib = $(LIBFDT_objdir)/libfdt.$(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) $(CONVERT_GEN_SRCS)
+
+install: all
+	@$(VECHO) INSTALL
+	$(INSTALL) -d $(DESTDIR)$(BINDIR)
+	$(INSTALL) $(BIN) $(DESTDIR)$(BINDIR)
+	$(INSTALL) -d $(DESTDIR)$(LIBDIR)
+	$(INSTALL) $(LIBFDT_lib) $(DESTDIR)$(LIBDIR)
+	$(INSTALL) -m 644 $(LIBFDT_archive) $(DESTDIR)$(LIBDIR)
+	$(INSTALL) -d $(DESTDIR)$(INCLUDEDIR)
+	$(INSTALL) -m 644 $(LIBFDT_include) $(DESTDIR)$(INCLUDEDIR)
+
+$(VERSION_FILE): Makefile FORCE
+	$(call filechk,version)
+
+
+dtc: $(DTC_OBJS)
+
+convert-dtsv0: $(CONVERT_OBJS)
+	@$(VECHO) LD $@
+	$(LINK.c) -o $@ $^
+
+ftdump:	$(FTDUMP_OBJS)
+
+
+#
+# Testsuite rules
+#
+TESTS_PREFIX=tests/
+include tests/Makefile.tests
+
+#
+# Clean rules
+#
+STD_CLEANFILES = *~ *.o *.so *.d *.a *.i *.s core a.out vgcore.* \
+	*.tab.[ch] *.lex.c *.output
+
+clean: libfdt_clean tests_clean
+	@$(VECHO) CLEAN
+	rm -f $(STD_CLEANFILES)
+	rm -f $(VERSION_FILE)
+	rm -f $(BIN)
+
+#
+# Generic compile rules
+#
+%: %.o
+	@$(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 $(SHAREDLIB_LINK_OPTIONS)$(notdir $@) -o $(LIBFDT_objdir)/libfdt-$(DTC_VERSION).$(SHAREDLIB_EXT) $^
+	ln -sf libfdt-$(DTC_VERSION).$(SHAREDLIB_EXT) $(LIBFDT_objdir)/libfdt.$(SHAREDLIB_EXT)
+
+%.lex.c: %.l
+	@$(VECHO) LEX $@
+	$(LEX) -o$@ $<
+
+%.tab.c %.tab.h %.output: %.y
+	@$(VECHO) BISON $@
+	$(BISON) -d $<
+
+FORCE: