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51148790f2
This commit enables Kconfig.
Going forward, we use Kconfig for the board configuration.
mkconfig will never be used. Nor will include/config.mk be generated.
Kconfig must be adjusted for U-Boot because our situation is
a little more complicated than Linux Kernel.
We have to generate multiple boot images (Normal, SPL, TPL)
from one source tree.
Each image needs its own configuration input.
Usage:
Run "make <board>_defconfig" to do the board configuration.
It will create the .config file and additionally spl/.config, tpl/.config
if SPL, TPL is enabled, respectively.
You can use "make config", "make menuconfig" etc. to create
a new .config or modify the existing one.
Use "make spl/config", "make spl/menuconfig" etc. for spl/.config
and do likewise for tpl/.config file.
The generic syntax of configuration targets for SPL, TPL is:
<target_image>/<config_command>
Here, <target_image> is either 'spl' or 'tpl'
<config_command> is 'config', 'menuconfig', 'xconfig', etc.
When the configuration is done, run "make".
(Or "make <board>_defconfig all" will do the configuration and build
in one time.)
For futher information of how Kconfig works in U-Boot,
please read the comment block of scripts/multiconfig.py.
By the way, there is another item worth remarking here:
coexistence of Kconfig and board herder files.
Prior to Kconfig, we used C headers to define a set of configs.
We expect a very long term to migrate from C headers to Kconfig.
Two different infractructure must coexist in the interim.
In our former configuration scheme, include/autoconf.mk was generated
for use in makefiles.
It is still generated under include/, spl/include/, tpl/include/ directory
for the Normal, SPL, TPL image, respectively.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
25 lines
651 B
Makefile
25 lines
651 B
Makefile
#
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# (C) Copyright 2003 Josef Baumgartner <josef.baumgartner@telex.de>
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#
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# (C) Copyright 2000-2004
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# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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#
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# Copyright 2011-2012 Freescale Semiconductor, Inc.
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#
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# SPDX-License-Identifier: GPL-2.0+
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#
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cfg=$(srctree)/include/configs/$(CONFIG_SYS_CONFIG_NAME:"%"=%).h
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is5441x:=$(shell grep CONFIG_MCF5441x $(cfg))
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ifneq (,$(findstring CONFIG_MCF5441x,$(is5441x)))
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PLATFORM_CPPFLAGS += -mcpu=54418 -fPIC
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else
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PLATFORM_CPPFLAGS += -mcpu=54455 -fPIC
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endif
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ifneq (,$(findstring -linux-,$(shell $(CC) --version)))
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ifneq (,$(findstring GOT,$(shell $(LD) --help)))
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PLATFORM_LDFLAGS += --got=single
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endif
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endif
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