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authorStefano Babic2016-06-18 10:24:54 +0200
committerStefano Babic2016-06-18 10:25:13 +0200
commitdc557e9a1fe00ca9d884bd88feef5bebf23fede4 (patch)
treeec09fdf8f7c4c44e30f4b38b7459a2cbbb71d094 /doc/README.generic-board
parentd2ba7a6adcef6e6f8c4418c7b0caf9d7ab98a6d4 (diff)
parent6b3943f1b04be60f147ee540fbd72c4c7ea89f80 (diff)
Merge branch 'master' of git://git.denx.de/u-boot
Signed-off-by: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'doc/README.generic-board')
-rw-r--r--doc/README.generic-board69
1 files changed, 7 insertions, 62 deletions
diff --git a/doc/README.generic-board b/doc/README.generic-board
index 734f1aa9249..6858c4daafb 100644
--- a/doc/README.generic-board
+++ b/doc/README.generic-board
@@ -5,29 +5,22 @@
# SPDX-License-Identifier: GPL-2.0+
#
-DEPRECATION NOTICE FOR arch/<arch>/lib/board.c
-
-For board maintainers: Please submit patches for boards you maintain before
-July 2014, to make them use generic board.
-
-For architecture maintainers: Please submit patches to remove your
-architecture-specific board.c file before October 2014.
-
-
Background
----------
-U-Boot has traditionally had a board.c file for each architecture. This has
-introduced quite a lot of duplication, with each architecture tending to do
+U-Boot traditionally had a board.c file for each architecture. This introduced
+quite a lot of duplication, with each architecture tending to do
initialisation slightly differently. To address this, a new 'generic board
-init' feature was introduced a year ago in March 2013 (further motivation is
+init' feature was introduced in March 2013 (further motivation is
provided in the cover letter below).
+All boards and architectures have moved to this as of mid 2016.
+
What has changed?
-----------------
-The main change is that the arch/<arch>/lib/board.c file is being removed in
+The main change is that the arch/<arch>/lib/board.c file is removed in
favour of common/board_f.c (for pre-relocation init) and common/board_r.c
(for post-relocation init).
@@ -36,55 +29,6 @@ fields which are common to all architectures. Architecture-specific fields
have been moved to separate structures.
-Supported Architectures
-------------------------
-
-If you are unlucky then your architecture may not support generic board.
-The following architectures are supported now:
-
- arc
- arm
- avr32
- blackfin
- m68k
- microblaze
- mips
- nios2
- powerpc
- sandbox
- x86
-
-If your architecture is not supported, you need to select
-HAVE_GENERIC_BOARD in arch/Kconfig
-and test it with a suitable board, as follows.
-
-
-Adding Support for your Board
------------------------------
-
-To enable generic board for your board, define CONFIG_SYS_GENERIC_BOARD in
-your board config header file.
-
-Test that U-Boot still functions correctly on your board, and fix any
-problems you find. Don't be surprised if there are no problems - generic
-board has had a reasonable amount of testing with common boards.
-
-
-DeadLine
---------
-
-Please don't take this the wrong way - there is no intent to make your life
-miserable, and we have the greatest respect and admiration for U-Boot users.
-However, with any migration there has to be a period where the old way is
-deprecated and removed. Every patch to the deprecated code introduces a
-potential breakage in the new unused code. Therefore:
-
-Boards or architectures not converted over to general board by the
-end of 2014 may be forcibly changed over (potentially causing run-time
-breakage) or removed.
-
-
-
Further Background
------------------
@@ -190,3 +134,4 @@ convenience.
Simon Glass, sjg@chromium.org
March 2014
+Updated after final removal, May 2016