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-rw-r--r--scripts/Makefile.autoconf100
1 files changed, 100 insertions, 0 deletions
diff --git a/scripts/Makefile.autoconf b/scripts/Makefile.autoconf
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index 0000000000..44c39970f3
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+++ b/scripts/Makefile.autoconf
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+# 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)