src/sys/dev/uart/uart_cpu_fdt.c, branch releng/12.3

sys/dev: further adoption of SPDX licensing ID tags.

2017-11-27T14:52:40+00:00

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Allow setting access-width for UART registers.

2017-02-27T20:08:42+00:00

This is required for FDT's standard "reg-io-width" property
(similar to "reg-shift" property) found in many DTS files.

This fixes operation on Altera Arria 10 SOC Development Kit,
where standard ns8250 uart allows 4-byte access only.

Reviewed by:	kan, marcel
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D9785

Remove now unused functions from the FDT uart cpu driver.

2016-07-24T08:52:49+00:00

Obtained from:	ABT Systems Ltd
MFC after:	1 month
X-MFC with:	r303100
Sponsored by:	The FreeBSD Foundation

We will be switching to a new arm64 uart cpu driver that handles both FDT

2016-07-20T17:19:47+00:00

and ACPI. As such pull out what will be the common parts of the FDT cpu
detection to a new function that can be shared between them.

Reviewed by:	manu
Obtained from:	ABT Systems Ltd
MFC after:	1 month
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D7262

Stop including machine/fdt.h from the fdt uart code, it's unneeded.

2016-04-26T13:16:45+00:00

Sponsored by:	ABT Systems Ltd

Do not include fdt.h on RISC-V.

2016-04-26T12:31:23+00:00

This code no longer references fdtbus_bs_tag, no need for a special extern

2016-02-23T03:01:46+00:00

declaration of it for aarch64.

Now that we have OF_decode_addr(), with proper MD implementations, to obtain

2016-02-23T02:57:45+00:00

the bus space tag and handle for a uart console, use the values returned by
that routine to set the global uart_bus_space_mem, instead of assuming that
there will be a global variable named fdtbus_bs_tag to set it from.

Also, use OF_getencprop() instead calling fdt32_to_cpu() separately.

Allow callers of OF_decode_addr to get the size of the found mapping. This

2016-02-16T15:18:12+00:00

will allow for code that uses the old fdt_get_range and fdt_regsize
functions to find a range, map it, access, then unmap to replace this, up
to and including the map, with a call to OF_decode_addr.

As this function should only be used in the early boot code the unmap is
mostly do document we no longer need the mapping as it's a no-op, at least
on arm.

Reviewed by:	jhibbits
Sponsored by:	ABT Systems Ltd
Differential Revision:	https://reviews.freebsd.org/D5258

Use OF_decode_addr() to create a bus_space tag and handle for the console

2016-01-18T17:03:12+00:00

on FDT/OFW platforms.

After the refactoring of the powerpc code so that OF_decode_addr() is usable
on all FDT/OFW platforms, this switches uart(4) to using it.

Differential Revision:	https://reviews.freebsd.org/D4675