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>
#
/include/config/
/include/generated/
-/include/spl-autoconf.mk
-/include/tpl-autoconf.mk
# stgit generated dirs
patches-*
export srctree objtree VPATH
-MKCONFIG := $(srctree)/mkconfig
-export MKCONFIG
-
# Make sure CDPATH settings don't interfere
unexport CDPATH
export HOSTARCH HOSTOS
-# Deal with colliding definitions from tcsh etc.
-VENDOR=
-
#########################################################################
# set default to nothing for native builds
CROSS_COMPILE ?=
endif
+KCONFIG_CONFIG ?= .config
+export KCONFIG_CONFIG
+
# SHELL used by kbuild
CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
else if [ -x /bin/bash ]; then echo /bin/bash; \
OBJDUMP = $(CROSS_COMPILE)objdump
AWK = awk
PERL = perl
+PYTHON = python
DTC = dtc
CHECK = sparse
export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
-export MAKE AWK PERL
+export MAKE AWK PERL PYTHON
export HOSTCXX HOSTCXXFLAGS DTC CHECK CHECKFLAGS
export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
# *config targets only - make sure prerequisites are updated, and descend
# in scripts/kconfig to make the *config target
-# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
-# KBUILD_DEFCONFIG may point out an alternative default configuration
-# used for 'make defconfig'
+KBUILD_DEFCONFIG := sandbox_defconfig
+export KBUILD_DEFCONFIG KBUILD_KCONFIG
-%_config:: outputmakefile
- @$(MKCONFIG) -A $(@:_config=)
+config: scripts_basic outputmakefile FORCE
+ +$(Q)$(PYTHON) $(srctree)/scripts/multiconfig.py $@
+
+%config: scripts_basic outputmakefile FORCE
+ +$(Q)$(PYTHON) $(srctree)/scripts/multiconfig.py $@
else
# ===========================================================================
# Build targets only - this includes vmlinux, arch specific targets, clean
# targets and others. In general all targets except *config targets.
-# load ARCH, BOARD, and CPU configuration
--include include/config.mk
-
ifeq ($(dot-config),1)
# Read in config
+-include include/config/auto.conf
+
+# Read in dependencies to all Kconfig* files, make sure to run
+# oldconfig if changes are detected.
+-include include/config/auto.conf.cmd
+
+# To avoid any implicit rule to kick in, define an empty command
+$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
+
+# If .config is newer than include/config/auto.conf, someone tinkered
+# with it and forgot to run make oldconfig.
+# if auto.conf.cmd is missing then we are probably in a cleaned tree so
+# we execute the config step to be sure to catch updated Kconfig files
+include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
+ $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
+
-include include/autoconf.mk
-include include/autoconf.mk.dep
-# load other configuration
+# We want to include arch/$(ARCH)/config.mk only when include/config/auto.conf
+# is up-to-date. When we switch to a different board configuration, old CONFIG
+# macros are still remaining in include/config/auto.conf. Without the following
+# gimmick, wrong config.mk would be included leading nasty warnings/errors.
+autoconf_is_current := $(if $(wildcard $(KCONFIG_CONFIG)),$(shell find . \
+ -path ./include/config/auto.conf -newer $(KCONFIG_CONFIG)))
+ifneq ($(autoconf_is_current),)
include $(srctree)/config.mk
-
-ifeq ($(wildcard include/config.mk),)
-$(error "System not configured - see README")
endif
# If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
endif
else
-
-
+# Dummy target needed, because used as prerequisite
+include/config/auto.conf: ;
endif # $(dot-config)
KBUILD_CFLAGS += -Os #-fomit-frame-pointer
UBOOTINCLUDE := \
-Iinclude \
$(if $(KBUILD_SRC), -I$(srctree)/include) \
- -I$(srctree)/arch/$(ARCH)/include
+ -I$(srctree)/arch/$(ARCH)/include \
+ -include $(srctree)/include/linux/kconfig.h
NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
CHECKFLAGS += $(NOSTDINC_FLAGS)
endef
# Store (new) UBOOTRELEASE string in include/config/uboot.release
-include/config/uboot.release: Makefile FORCE
+include/config/uboot.release: include/config/auto.conf FORCE
$(call filechk,uboot.release)
# 1) Check that make has not been executed in the kernel src $(srctree)
prepare3: include/config/uboot.release
ifneq ($(KBUILD_SRC),)
- @$(kecho) ' Using $(srctree) as source for u-boot'
- $(Q)if [ -f $(srctree)/include/config.mk ]; then \
+ @$(kecho) ' Using $(srctree) as source for U-Boot'
+ $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
echo >&2 " in the '$(srctree)' directory.";\
/bin/false; \
# prepare2 creates a makefile if using a separate output directory
prepare2: prepare3 outputmakefile
-prepare1: prepare2 $(version_h) $(timestamp_h)
+prepare1: prepare2 $(version_h) $(timestamp_h) \
+ include/config/auto.conf
ifeq ($(__HAVE_ARCH_GENERIC_BOARD),)
ifeq ($(CONFIG_SYS_GENERIC_BOARD),y)
@echo >&2 " Your architecture does not support generic board."
$(timestamp_h): $(srctree)/Makefile FORCE
$(call filechk,timestamp.h)
-#
-# Auto-generate the autoconf.mk file (which is included by all makefiles)
-#
-# This target actually generates 2 files; autoconf.mk and autoconf.mk.dep.
-# the dep file is only include in this top level makefile to determine when
-# to regenerate the autoconf.mk file.
-
-quiet_cmd_autoconf_dep = GEN $@
- cmd_autoconf_dep = $(CC) -x c -DDO_DEPS_ONLY -M $(c_flags) \
- -MQ include/autoconf.mk $(srctree)/include/common.h > $@ || rm $@
-
-include/autoconf.mk.dep: include/config.h include/common.h
- $(call cmd,autoconf_dep)
-
-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 > $@; \
- rm $@.tmp
-
-include/autoconf.mk: include/config.h
- $(call cmd,autoconf)
-
# ---------------------------------------------------------------------------
PHONY += depend dep
@:
tpl/u-boot-tpl.bin: tools prepare
- $(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all CONFIG_TPL_BUILD=y
+ $(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all
TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include)
# Directories & files removed with 'make clean'
CLEAN_DIRS += $(MODVERDIR)
-CLEAN_FILES += u-boot.lds include/bmp_logo.h include/bmp_logo_data.h \
- include/autoconf.mk* include/spl-autoconf.mk \
- include/tpl-autoconf.mk
+CLEAN_FILES += u-boot.lds include/bmp_logo.h include/bmp_logo_data.h
# Directories & files removed with 'make clobber'
-CLOBBER_DIRS += spl tpl
+CLOBBER_DIRS += $(foreach d, spl tpl, $(patsubst %,$d/%, \
+ $(filter-out include, $(shell ls -1 $d 2>/dev/null))))
CLOBBER_FILES += u-boot* MLO* SPL System.map
# Directories & files removed with 'make mrproper'
-MRPROPER_DIRS += include/config include/generated \
+MRPROPER_DIRS += include/config include/generated spl tpl \
.tmp_objdiff
-MRPROPER_FILES += .config .config.old \
- ctags etags cscope* GPATH GTAGS GRTAGS GSYMS \
- include/config.h include/config.mk
+MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \
+ ctags etags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
# clean - Delete most, but leave enough to build external modules
#
@echo ' mrproper - Remove all generated files + config + various backup files'
@echo ' distclean - mrproper + remove editor backup and patch files'
@echo ''
-# uncomment after adding Kconfig feature
-# @echo 'Configuration targets:'
-# @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
-# @echo ''
+ @echo 'Configuration targets:'
+ @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
+ @echo ''
@echo 'Other generic targets:'
@echo ' all - Build all necessary images depending on configuration'
@echo ' u-boot - Build the bare u-boot'
# SPDX-License-Identifier: GPL-2.0+
#
-cfg=$(shell grep configs $(objtree)/include/config.h | sed 's/.*<\(configs.*\)>/\1/')
-is5208:=$(shell grep CONFIG_M5208 $(srctree)/include/$(cfg))
-is5249:=$(shell grep CONFIG_M5249 $(srctree)/include/$(cfg))
-is5253:=$(shell grep CONFIG_M5253 $(srctree)/include/$(cfg))
-is5271:=$(shell grep CONFIG_M5271 $(srctree)/include/$(cfg))
-is5272:=$(shell grep CONFIG_M5272 $(srctree)/include/$(cfg))
-is5275:=$(shell grep CONFIG_M5275 $(srctree)/include/$(cfg))
-is5282:=$(shell grep CONFIG_M5282 $(srctree)/include/$(cfg))
+cfg=$(srctree)/include/configs/$(CONFIG_SYS_CONFIG_NAME:"%"=%).h
+is5208:=$(shell grep CONFIG_M5208 $(cfg))
+is5249:=$(shell grep CONFIG_M5249 $(cfg))
+is5253:=$(shell grep CONFIG_M5253 $(cfg))
+is5271:=$(shell grep CONFIG_M5271 $(cfg))
+is5272:=$(shell grep CONFIG_M5272 $(cfg))
+is5275:=$(shell grep CONFIG_M5275 $(cfg))
+is5282:=$(shell grep CONFIG_M5282 $(cfg))
ifneq (,$(findstring CONFIG_M5208,$(is5208)))
PLATFORM_CPPFLAGS += -mcpu=5208
# SPDX-License-Identifier: GPL-2.0+
#
-cfg=$(shell grep configs $(objtree)/include/config.h | sed 's/.*<\(configs.*\)>/\1/')
-is5301x:=$(shell grep CONFIG_MCF5301x $(srctree)/include/$(cfg))
-is532x:=$(shell grep CONFIG_MCF532x $(srctree)/include/$(cfg))
+cfg=$(srctree)/include/configs/$(CONFIG_SYS_CONFIG_NAME:"%"=%).h
+is5301x:=$(shell grep CONFIG_MCF5301x $(cfg))
+is532x:=$(shell grep CONFIG_MCF532x $(cfg))
ifneq (,$(findstring CONFIG_MCF5301x,$(is5301x)))
PLATFORM_CPPFLAGS += -mcpu=53015 -fPIC
# SPDX-License-Identifier: GPL-2.0+
#
-cfg=$(shell grep configs $(objtree)/include/config.h | sed 's/.*<\(configs.*\)>/\1/')
-is5441x:=$(shell grep CONFIG_MCF5441x $(srctree)/include/$(cfg))
+cfg=$(srctree)/include/configs/$(CONFIG_SYS_CONFIG_NAME:"%"=%).h
+is5441x:=$(shell grep CONFIG_MCF5441x $(cfg))
ifneq (,$(findstring CONFIG_MCF5441x,$(is5441x)))
PLATFORM_CPPFLAGS += -mcpu=54418 -fPIC
PLATFORM_CPPFLAGS += -DCONFIG_4xx -mstring -msoft-float
-cfg=$(shell grep configs $(objtree)/include/config.h | sed 's/.*<\(configs.*\)>/\1/')
-is440:=$(shell grep CONFIG_440 $(srctree)/include/$(cfg))
+cfg=$(srctree)/include/configs/$(CONFIG_SYS_CONFIG_NAME:"%"=%).h
+is440:=$(shell grep CONFIG_440 $(cfg))
ifneq (,$(findstring CONFIG_440,$(is440)))
PLATFORM_CPPFLAGS += -Wa,-m440 -mcpu=440
OBJCOPYFLAGS :=
#########################################################################
+ARCH := $(CONFIG_SYS_ARCH:"%"=%)
+CPU := $(CONFIG_SYS_CPU:"%"=%)
+BOARD := $(CONFIG_SYS_BOARD:"%"=%)
+ifneq ($(CONFIG_SYS_VENDOR),)
+VENDOR := $(CONFIG_SYS_VENDOR:"%"=%)
+endif
+ifneq ($(CONFIG_SYS_SOC),)
+SOC := $(CONFIG_SYS_SOC:"%"=%)
+endif
+
# Some architecture config.mk files need to know what CPUDIR is set to,
# so calculate CPUDIR before including ARCH/SOC/CPU config.mk files.
# Check if arch/$ARCH/cpu/$CPU exists, otherwise assume arch/$ARCH/cpu contains
/bmp_logo.h
/bmp_logo_data.h
/config.h
-/config.mk
@:
# Let clean descend into subdirs
-subdir- += basic
+subdir- += basic kconfig
--- /dev/null
+# 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: $(PHONY)
# ==========================================================================
# Modified for U-Boot
-ifeq ($(CONFIG_TPL_BUILD),y)
- src := $(patsubst tpl/%,%,$(obj))
-else
- ifeq ($(CONFIG_SPL_BUILD),y)
- src := $(patsubst spl/%,%,$(obj))
- else
- src := $(obj)
- endif
+prefix := tpl
+src := $(patsubst $(prefix)/%,%,$(obj))
+ifeq ($(obj),$(src))
+prefix := spl
+src := $(patsubst $(prefix)/%,%,$(obj))
+ifeq ($(obj),$(src))
+prefix := .
+endif
endif
PHONY := __build
subdir-ccflags-y :=
# Read auto.conf if it exists, otherwise ignore
--include include/config/auto.conf
-
-# Added for U-Boot: Load U-Boot configuration
-ifeq ($(CONFIG_TPL_BUILD),y)
- -include include/tpl-autoconf.mk
-else
- ifeq ($(CONFIG_SPL_BUILD),y)
- -include include/spl-autoconf.mk
- else
- -include include/autoconf.mk
- endif
-endif
+# Modified for U-Boot
+-include $(prefix)/include/config/auto.conf
+-include $(prefix)/include/autoconf.mk
include scripts/Kbuild.include
include $(srctree)/scripts/Kbuild.include
-CONFIG_SPL_BUILD := y
-export CONFIG_SPL_BUILD
+UBOOTINCLUDE := -I$(obj)/include $(UBOOTINCLUDE)
-KBUILD_CPPFLAGS += -DCONFIG_SPL_BUILD
-ifeq ($(CONFIG_TPL_BUILD),y)
-KBUILD_CPPFLAGS += -DCONFIG_TPL_BUILD
-endif
+-include $(obj)/include/config/auto.conf
+-include $(obj)/include/autoconf.mk
ifeq ($(CONFIG_TPL_BUILD),y)
export CONFIG_TPL_BUILD
SPL_BIN := u-boot-spl
endif
-include include/config.mk
-
-ifeq ($(CONFIG_TPL_BUILD),y)
- -include include/tpl-autoconf.mk
-else
- -include include/spl-autoconf.mk
-endif
-
include $(srctree)/config.mk
# Enable garbage collection of un-used sections for SPL
# FIX ME
cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
$(NOSTDINC_FLAGS)
-c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
-
-# Auto-generate the spl-autoconf.mk file (which is included by all makefiles for SPL)
-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 > $@; \
- rm $@.tmp
-
-include/tpl-autoconf.mk: include/config.h
- $(call cmd,autoconf)
-
-include/spl-autoconf.mk: include/config.h
- $(call cmd,autoconf)
HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
define_config(m, slen, hash);
- printf(" $(wildcard include/config/");
+ /* printf(" $(wildcard include/config/"); */
+ /* modified for U-Boot */
+ printf(" $(wildcard %sinclude/config/",
+ strncmp(depfile, "spl/", 4) ?
+ (strncmp(depfile, "tpl/", 4) ? "" : "tpl/") : "spl/");
for (i = 0; i < slen; i++) {
c = m[i];
if (c == '_')
FILE *out, *tristate, *out_h;
int i;
+ /*
+ * Added for U-Boot SPL/TPL
+ */
+ name = getenv("KCONFIG_OBJDIR");
+ if (name && name[0])
+ if (chdir(name))
+ return 1;
+
sym_clear_all_valid();
file_write_dep("include/config/auto.conf.cmd");
--- /dev/null
+#!/usr/bin/env python
+#
+# Copyright (C) 2014, Masahiro Yamada <yamada.m@jp.panasonic.com>
+#
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+"""
+A wrapper script to adjust Kconfig for U-Boot
+
+The biggest difference between Linux Kernel and U-Boot in terms of the
+board configuration is that U-Boot has to configure multiple boot images
+per board: Normal, SPL, TPL.
+We need to expand the functions of Kconfig to handle multiple boot
+images.
+
+Instead of touching various parts under the scripts/kconfig/ directory,
+pushing necessary adjustments into this single script would be better
+for code maintainance. All the make targets related to the configuration
+(make %config) should be invoked via this script.
+
+Let's see what is different from the original Kconfig.
+
+- config, menuconfig, etc.
+
+The commands 'make config', 'make menuconfig', etc. are used to create
+or modify the .config file, which stores configs for Normal boot image.
+
+The location of the one for SPL, TPL image is spl/.config, tpl/.config,
+respectively. Use 'make spl/config', 'make spl/menuconfig', etc.
+to create or modify the spl/.config file, which contains configs
+for SPL image.
+Do likewise for the tpl/.config file.
+The generic syntax for SPL, TPL configuration is
+'make <target_image>/<config_command>'.
+
+- silentoldconfig
+
+The command 'make silentoldconfig' updates .config, if necessary, and
+additionally updates include/generated/autoconf.h and files under
+include/configs/ directory. In U-Boot, it should do the same things for
+SPL, TPL images for boards supporting them.
+Depending on whether CONFIG_SPL, CONFIG_TPL is defined or not,
+'make silentoldconfig' iterates three times at most changing the target
+directory.
+
+To sum up, 'make silentoldconfig' possibly updates
+ - .config, include/generated/autoconf.h, include/config/*
+ - spl/.config, spl/include/generated/autoconf.h, spl/include/config/*
+ (in case CONFIG_SPL=y)
+ - tpl/.config, tpl/include/generated/autoconf.h, tpl/include/config/*
+ (in case CONFIG_TPL=y)
+
+- defconfig, <board>_defconfig
+
+The command 'make <board>_defconfig' creates a new .config based on the
+file configs/<board>_defconfig. The command 'make defconfig' is the same
+but the difference is it uses the file specified with KBUILD_DEFCONFIG
+environment.
+
+We need to create .config, spl/.config, tpl/.config for boards where SPL
+and TPL images are supported. One possible solution for that is to have
+multiple defconfig files per board, but it would produce duplication
+among the defconfigs.
+The approach chosen here is to expand the feature and support
+conditional definition in defconfig, that is, each line in defconfig
+files has the form of:
+<condition>:<macro definition>
+
+The '<condition>:' prefix specifies which image the line is valid for.
+The '<condition>:' is one of:
+ None - the line is valid only for Normal image
+ S: - the line is valid only for SPL image
+ T: - the line is valid only for TPL image
+ ST: - the line is valid for SPL and TPL images
+ +S: - the line is valid for Normal and SPL images
+ +T: - the line is valid for Normal and TPL images
+ +ST: - the line is valid for Normal, SPL and SPL images
+
+So, if neither CONFIG_SPL nor CONFIG_TPL is defined, the defconfig file
+has no '<condition>:' part and therefore has the same form of that of
+Linux Kernel.
+
+In U-Boot, for example, a defconfig file can be written like this:
+
+ CONFIG_FOO=100
+ S:CONFIG_FOO=200
+ T:CONFIG_FOO=300
+ ST:CONFIG_BAR=y
+ +S:CONFIG_BAZ=y
+ +T:CONFIG_QUX=y
+ +ST:CONFIG_QUUX=y
+
+The defconfig above is parsed by this script and internally divided into
+three temporary defconfig files.
+
+ - Temporary defconfig for Normal image
+ CONFIG_FOO=100
+ CONFIG_BAZ=y
+ CONFIG_QUX=y
+ CONFIG_QUUX=y
+
+ - Temporary defconfig for SPL image
+ CONFIG_FOO=200
+ CONFIG_BAR=y
+ CONFIG_BAZ=y
+ CONFIG_QUUX=y
+
+ - Temporary defconfig for TPL image
+ CONFIG_FOO=300
+ CONFIG_BAR=y
+ CONFIG_QUX=y
+ CONFIG_QUUX=y
+
+They are passed to scripts/kconfig/conf, each is used for generating
+.config, spl/.config, tpl/.config, respectively.
+
+- savedefconfig
+
+This is the reverse operation of 'make defconfig'.
+If neither CONFIG_SPL nor CONFIG_TPL is defined in the .config file,
+it works as 'make savedefconfig' in Linux Kernel: create the minimal set
+of config based on the .config and save it into 'defconfig' file.
+
+If CONFIG_SPL or CONFIG_TPL is defined, the common lines among .config,
+spl/.config, tpl/.config are coalesced together and output to the file
+'defconfig' in the form like:
+
+ CONFIG_FOO=100
+ S:CONFIG_FOO=200
+ T:CONFIG_FOO=300
+ ST:CONFIG_BAR=y
+ +S:CONFIG_BAZ=y
+ +T:CONFIG_QUX=y
+ +ST:CONFIG_QUUX=y
+
+This can be used as an input of 'make <board>_defconfig' command.
+"""
+
+import errno
+import os
+import re
+import subprocess
+import sys
+
+# Constant variables
+SUB_IMAGES = ('spl', 'tpl')
+IMAGES = ('',) + SUB_IMAGES
+SYMBOL_MAP = {'': '+', 'spl': 'S', 'tpl': 'T'}
+PATTERN_SYMBOL = re.compile(r'(\+?)(S?)(T?):(.*)')
+
+# Environment variables (should be defined in the top Makefile)
+# .get('key', 'default_value') method is useful for standalone testing.
+MAKE = os.environ.get('MAKE', 'make')
+srctree = os.environ.get('srctree', '.')
+KCONFIG_CONFIG = os.environ.get('KCONFIG_CONFIG', '.config')
+
+# Useful shorthand
+build = '%s -f %s/scripts/Makefile.build obj=scripts/kconfig %%s' % (MAKE, srctree)
+autoconf = '%s -f %s/scripts/Makefile.autoconf obj=%%s %%s' % (MAKE, srctree)
+
+### helper functions ###
+def mkdirs(*dirs):
+ """Make directories ignoring 'File exists' error."""
+ for d in dirs:
+ try:
+ os.makedirs(d)
+ except OSError as exception:
+ # Ignore 'File exists' error
+ if exception.errno != errno.EEXIST:
+ raise
+
+def rmfiles(*files):
+ """Remove files ignoring 'No such file or directory' error."""
+ for f in files:
+ try:
+ os.remove(f)
+ except OSError as exception:
+ # Ignore 'No such file or directory' error
+ if exception.errno != errno.ENOENT:
+ raise
+
+def rmdirs(*dirs):
+ """Remove directories ignoring 'No such file or directory'
+ and 'Directory not empty' error.
+ """
+ for d in dirs:
+ try:
+ os.rmdir(d)
+ except OSError as exception:
+ # Ignore 'No such file or directory'
+ # and 'Directory not empty' error
+ if exception.errno != errno.ENOENT and \
+ exception.errno != errno.ENOTEMPTY:
+ raise
+
+def error(msg):
+ """Output the given argument to stderr and exit with return code 1."""
+ print >> sys.stderr, msg
+ sys.exit(1)
+
+def run_command(command, callback_on_error=None):
+ """Run the given command in a sub-shell (and exit if it fails).
+
+ Arguments:
+ command: A string of the command
+ callback_on_error: Callback handler invoked just before exit
+ when the command fails (Default=None)
+ """
+ retcode = subprocess.call(command, shell=True)
+ if retcode:
+ if callback_on_error:
+ callback_on_error()
+ error("'%s' Failed" % command)
+
+def run_make_config(cmd, objdir, callback_on_error=None):
+ """Run the make command in a sub-shell (and exit if it fails).
+
+ Arguments:
+ cmd: Make target such as 'config', 'menuconfig', 'defconfig', etc.
+ objdir: Target directory where the make command is run.
+ Typically '', 'spl', 'tpl' for Normal, SPL, TPL image,
+ respectively.
+ callback_on_error: Callback handler invoked just before exit
+ when the command fails (Default=None)
+ """
+ # Linux expects defconfig files in arch/$(SRCARCH)/configs/ directory,
+ # but U-Boot puts them in configs/ directory.
+ # Give SRCARCH=.. to fake scripts/kconfig/Makefile.
+ options = 'SRCARCH=.. KCONFIG_OBJDIR=%s' % objdir
+ if objdir:
+ options += ' KCONFIG_CONFIG=%s/%s' % (objdir, KCONFIG_CONFIG)
+ mkdirs(objdir)
+ run_command(build % cmd + ' ' + options, callback_on_error)
+
+def get_enabled_subimages(ignore_error=False):
+ """Parse .config file to detect if CONFIG_SPL, CONFIG_TPL is enabled
+ and return a tuple of enabled subimages.
+
+ Arguments:
+ ignore_error: Specify the behavior when '.config' is not found;
+ Raise an exception if this flag is False.
+ Return a null tuple if this flag is True.
+
+ Returns:
+ A tuple of enabled subimages as follows:
+ () if neither CONFIG_SPL nor CONFIG_TPL is defined
+ ('spl',) if CONFIG_SPL is defined but CONFIG_TPL is not
+ ('spl', 'tpl') if both CONFIG_SPL and CONFIG_TPL are defined
+ """
+ enabled = ()
+ match_patterns = [ (img, 'CONFIG_' + img.upper() + '=y\n')
+ for img in SUB_IMAGES ]
+ try:
+ f = open(KCONFIG_CONFIG)
+ except IOError as exception:
+ if not ignore_error or exception.errno != errno.ENOENT:
+ raise
+ return enabled
+ with f:
+ for line in f:
+ for img, pattern in match_patterns:
+ if line == pattern:
+ enabled += (img,)
+ return enabled
+
+def do_silentoldconfig(cmd):
+ """Run 'make silentoldconfig' for all the enabled images.
+
+ Arguments:
+ cmd: should always be a string 'silentoldconfig'
+ """
+ run_make_config(cmd, '')
+ subimages = get_enabled_subimages()
+ for obj in subimages:
+ mkdirs(os.path.join(obj, 'include', 'config'),
+ os.path.join(obj, 'include', 'generated'))
+ run_make_config(cmd, obj)
+ remove_auto_conf = lambda : rmfiles('include/config/auto.conf')
+ # If the following part failed, include/config/auto.conf should be deleted
+ # so 'make silentoldconfig' will be re-run on the next build.
+ run_command(autoconf %
+ ('include', 'include/autoconf.mk include/autoconf.mk.dep'),
+ remove_auto_conf)
+ # include/config.h has been updated after 'make silentoldconfig'.
+ # We need to touch include/config/auto.conf so it gets newer
+ # than include/config.h.
+ # Otherwise, 'make silentoldconfig' would be invoked twice.
+ os.utime('include/config/auto.conf', None)
+ for obj in subimages:
+ run_command(autoconf % (obj + '/include',
+ obj + '/include/autoconf.mk'),
+ remove_auto_conf)
+
+def do_tmp_defconfig(output_lines, img):
+ """Helper function for do_board_defconfig().
+
+ Write the defconfig contents into a file '.tmp_defconfig' and
+ invoke 'make .tmp_defconfig'.
+
+ Arguments:
+ output_lines: A sequence of defconfig lines of each image
+ img: Target image. Typically '', 'spl', 'tpl' for
+ Normal, SPL, TPL images, respectively.
+ """
+ TMP_DEFCONFIG = '.tmp_defconfig'
+ TMP_DIRS = ('arch', 'configs')
+ defconfig_path = os.path.join('configs', TMP_DEFCONFIG)
+ mkdirs(*TMP_DIRS)
+ with open(defconfig_path, 'w') as f:
+ f.write(''.join(output_lines[img]))
+ cleanup = lambda: (rmfiles(defconfig_path), rmdirs(*TMP_DIRS))
+ run_make_config(TMP_DEFCONFIG, img, cleanup)
+ cleanup()
+
+def do_board_defconfig(cmd):
+ """Run 'make <board>_defconfig'.
+
+ Arguments:
+ cmd: should be a string '<board>_defconfig'
+ """
+ defconfig_path = os.path.join(srctree, 'configs', cmd)
+ output_lines = dict([ (img, []) for img in IMAGES ])
+ with open(defconfig_path) as f:
+ for line in f:
+ m = PATTERN_SYMBOL.match(line)
+ if m:
+ for idx, img in enumerate(IMAGES):
+ if m.group(idx + 1):
+ output_lines[img].append(m.group(4) + '\n')
+ continue
+ output_lines[''].append(line)
+ do_tmp_defconfig(output_lines, '')
+ for img in get_enabled_subimages():
+ do_tmp_defconfig(output_lines, img)
+
+def do_defconfig(cmd):
+ """Run 'make defconfig'.
+
+ Arguments:
+ cmd: should always be a string 'defconfig'
+ """
+ KBUILD_DEFCONFIG = os.environ['KBUILD_DEFCONFIG']
+ print "*** Default configuration is based on '%s'" % KBUILD_DEFCONFIG
+ do_board_defconfig(KBUILD_DEFCONFIG)
+
+def do_savedefconfig(cmd):
+ """Run 'make savedefconfig'.
+
+ Arguments:
+ cmd: should always be a string 'savedefconfig'
+ """
+ DEFCONFIG = 'defconfig'
+ # Continue even if '.config' does not exist
+ subimages = get_enabled_subimages(True)
+ run_make_config(cmd, '')
+ output_lines = []
+ prefix = {}
+ with open(DEFCONFIG) as f:
+ for line in f:
+ output_lines.append(line)
+ prefix[line] = '+'
+ for img in subimages:
+ run_make_config(cmd, img)
+ unmatched_lines = []
+ with open(DEFCONFIG) as f:
+ for line in f:
+ if line in output_lines:
+ index = output_lines.index(line)
+ output_lines[index:index] = unmatched_lines
+ unmatched_lines = []
+ prefix[line] += SYMBOL_MAP[img]
+ else:
+ ummatched_lines.append(line)
+ prefix[line] = SYMBOL_MAP[img]
+ with open(DEFCONFIG, 'w') as f:
+ for line in output_lines:
+ if prefix[line] == '+':
+ f.write(line)
+ else:
+ f.write(prefix[line] + ':' + line)
+
+def do_others(cmd):
+ """Run the make command other than 'silentoldconfig', 'defconfig',
+ '<board>_defconfig' and 'savedefconfig'.
+
+ Arguments:
+ cmd: Make target in the form of '<target_image>/<config_command>'
+ The field '<target_image>/' is typically empty, 'spl/', 'tpl/'
+ for Normal, SPL, TPL images, respectively.
+ The field '<config_command>' is make target such as 'config',
+ 'menuconfig', etc.
+ """
+ objdir, _, cmd = cmd.rpartition('/')
+ run_make_config(cmd, objdir)
+
+cmd_list = {'silentoldconfig': do_silentoldconfig,
+ 'defconfig': do_defconfig,
+ 'savedefconfig': do_savedefconfig}
+
+def main():
+ cmd = sys.argv[1]
+ if cmd.endswith('_defconfig'):
+ do_board_defconfig(cmd)
+ else:
+ func = cmd_list.get(cmd, do_others)
+ func(cmd)
+
+if __name__ == '__main__':
+ main()
# Define _GNU_SOURCE to obtain the getline prototype from stdio.h
#
HOST_EXTRACFLAGS += -include $(srctree)/include/libfdt_env.h \
- $(patsubst -I%,-idirafter%, $(UBOOTINCLUDE)) \
+ $(patsubst -I%,-idirafter%, $(filter -I%, $(UBOOTINCLUDE))) \
-I$(srctree)/lib/libfdt \
-I$(srctree)/tools \
-DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE) \
HOSTCC = $(CC)
# Compile for a hosted environment on the target
-HOST_EXTRACFLAGS = $(patsubst -I%,-idirafter%, $(UBOOTINCLUDE)) \
+HOST_EXTRACFLAGS = $(patsubst -I%,-idirafter%, $(filter -I%, $(UBOOTINCLUDE))) \
-idirafter $(srctree)/tools/env \
-DUSE_HOSTCC \
-DTEXT_BASE=$(TEXT_BASE)
projects / u-boot / commitdiff