mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-16 23:18:51 +09:00
![Masahiro Yamada](/assets/img/avatar_default.png)
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>
101 lines
3.2 KiB
Makefile
101 lines
3.2 KiB
Makefile
# This helper makefile is used for creating
|
|
# - symbolic links (arch/$ARCH/include/asm/arch
|
|
# - include/autoconf.mk, {spl,tpl}/include/autoconf.mk
|
|
# - include/config.h
|
|
#
|
|
# When our migration to Kconfig is done
|
|
# (= When we move all CONFIGs from header files to Kconfig)
|
|
# this makefile can be deleted.
|
|
|
|
# obj is "include" or "spl/include" or "tpl/include"
|
|
# for non-SPL, SPL, TPL, respectively
|
|
include $(obj)/config/auto.conf
|
|
|
|
include scripts/Kbuild.include
|
|
|
|
# Need to define CC and CPP again here in case the top Makefile did not
|
|
# include config.mk. Some architectures expect CROSS_COMPILE to be defined
|
|
# in arch/$(ARCH)/config.mk
|
|
CC = $(CROSS_COMPILE)gcc
|
|
CPP = $(CC) -E
|
|
|
|
include config.mk
|
|
|
|
UBOOTINCLUDE := \
|
|
-I$(obj) \
|
|
-Iinclude \
|
|
$(if $(KBUILD_SRC), -I$(srctree)/include) \
|
|
-I$(srctree)/arch/$(ARCH)/include \
|
|
-include $(srctree)/include/linux/kconfig.h
|
|
|
|
c_flags := $(KBUILD_CFLAGS) $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) \
|
|
$(UBOOTINCLUDE) $(NOSTDINC_FLAGS)
|
|
|
|
quiet_cmd_autoconf_dep = GEN $@
|
|
cmd_autoconf_dep = $(CC) -x c -DDO_DEPS_ONLY -M -MP $(c_flags) \
|
|
-MQ include/config/auto.conf $(srctree)/include/common.h > $@ || { \
|
|
rm $@; false; \
|
|
}
|
|
include/autoconf.mk.dep: FORCE
|
|
$(call cmd,autoconf_dep)
|
|
|
|
# We are migrating from board headers to Kconfig little by little.
|
|
# In the interim, we use both of
|
|
# - include/config/auto.conf (generated by Kconfig)
|
|
# - include/autoconf.mk (used in the U-Boot conventional configuration)
|
|
# The following rule creates autoconf.mk
|
|
# include/config/auto.conf is grepped in order to avoid duplication of the
|
|
# same CONFIG macros
|
|
quiet_cmd_autoconf = GEN $@
|
|
cmd_autoconf = \
|
|
$(CPP) $(c_flags) -DDO_DEPS_ONLY -dM $(srctree)/include/common.h > $@.tmp && { \
|
|
sed -n -f $(srctree)/tools/scripts/define2mk.sed $@.tmp | \
|
|
while read line; do \
|
|
if ! grep -q "$${line%=*}=" $(obj)/config/auto.conf; then \
|
|
echo "$$line"; \
|
|
fi \
|
|
done > $@; \
|
|
rm $@.tmp; \
|
|
} || { \
|
|
rm $@.tmp; false; \
|
|
}
|
|
|
|
$(obj)/autoconf.mk: FORCE
|
|
$(call cmd,autoconf)
|
|
|
|
include/autoconf.mk include/autoconf.mk.dep: include/config.h
|
|
|
|
# include/config.h
|
|
# Prior to Kconfig, it was generated by mkconfig. Now it is created here.
|
|
define filechk_config_h
|
|
(echo "/* Automatically generated - do not edit */"; \
|
|
for i in $$(echo $(CONFIG_SYS_EXTRA_OPTIONS) | sed 's/,/ /g'); do \
|
|
echo \#define CONFIG_$$i \
|
|
| sed '/=/ {s/=/ /;q; } ; { s/$$/ 1/; }'; \
|
|
done; \
|
|
echo \#define CONFIG_BOARDDIR board/$(if $(VENDOR),$(VENDOR)/)$(BOARD);\
|
|
echo \#include \<config_cmd_defaults.h\>; \
|
|
echo \#include \<config_defaults.h\>; \
|
|
echo \#include \<configs/$(CONFIG_SYS_CONFIG_NAME).h\>; \
|
|
echo \#include \<asm/config.h\>; \
|
|
echo \#include \<config_fallbacks.h\>; \
|
|
echo \#include \<config_uncmd_spl.h\>; )
|
|
endef
|
|
|
|
include/config.h: scripts/Makefile.autoconf create_symlink FORCE
|
|
$(call filechk,config_h)
|
|
|
|
# symbolic links
|
|
PHONY += create_symlink
|
|
create_symlink:
|
|
ifneq ($(KBUILD_SRC),)
|
|
$(Q)mkdir -p include/asm
|
|
endif
|
|
$(Q)ln -fsn $(srctree)/arch/$(ARCH)/include/asm/arch-$(if $(SOC),$(SOC),$(CPU)) \
|
|
$(if $(KBUILD_SRC),,arch/$(ARCH)/)include/asm/arch
|
|
|
|
PHONY += FORCE
|
|
FORCE:
|
|
|
|
.PHONY: $(PHONY)
|