1# This helper makefile is used for creating 2# - symbolic links (arch/$ARCH/include/asm/arch 3# - include/autoconf.mk, {spl,tpl}/include/autoconf.mk 4# - include/config.h 5# 6# When our migration to Kconfig is done 7# (= When we move all CONFIGs from header files to Kconfig) 8# this makefile can be deleted. 9 10__all: include/autoconf.mk include/autoconf.mk.dep 11 12ifeq ($(shell grep -q '^CONFIG_SPL=y' include/config/auto.conf 2>/dev/null && echo y),y) 13__all: spl/include/autoconf.mk 14endif 15 16ifeq ($(shell grep -q '^CONFIG_TPL=y' include/config/auto.conf 2>/dev/null && echo y),y) 17__all: tpl/include/autoconf.mk 18endif 19 20include include/config/auto.conf 21 22include scripts/Kbuild.include 23 24# Need to define CC and CPP again here in case the top Makefile did not 25# include config.mk. Some architectures expect CROSS_COMPILE to be defined 26# in arch/$(ARCH)/config.mk 27CC = $(CROSS_COMPILE)gcc 28CPP = $(CC) -E 29 30include config.mk 31 32UBOOTINCLUDE := \ 33 -Iinclude \ 34 $(if $(KBUILD_SRC), -I$(srctree)/include) \ 35 -I$(srctree)/arch/$(ARCH)/include \ 36 -include $(srctree)/include/linux/kconfig.h 37 38c_flags := $(KBUILD_CFLAGS) $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) \ 39 $(UBOOTINCLUDE) $(NOSTDINC_FLAGS) 40 41quiet_cmd_autoconf_dep = GEN $@ 42 cmd_autoconf_dep = $(CC) -x c -DDO_DEPS_ONLY -M -MP $(c_flags) \ 43 -MQ include/config/auto.conf $(srctree)/include/common.h > $@ || { \ 44 rm $@; false; \ 45 } 46include/autoconf.mk.dep: FORCE 47 $(call cmd,autoconf_dep) 48 49# We are migrating from board headers to Kconfig little by little. 50# In the interim, we use both of 51# - include/config/auto.conf (generated by Kconfig) 52# - include/autoconf.mk (used in the U-Boot conventional configuration) 53# The following rule creates autoconf.mk 54# include/config/auto.conf is grepped in order to avoid duplication of the 55# same CONFIG macros 56quiet_cmd_autoconf = GEN $@ 57 cmd_autoconf = \ 58 $(CPP) $(c_flags) $2 -DDO_DEPS_ONLY -dM $(srctree)/include/common.h > $@.tmp && { \ 59 sed -n -f $(srctree)/tools/scripts/define2mk.sed $@.tmp | \ 60 while read line; do \ 61 if ! grep -q "$${line%=*}=" include/config/auto.conf; then \ 62 echo "$$line"; \ 63 fi \ 64 done > $@; \ 65 rm $@.tmp; \ 66 } || { \ 67 rm $@.tmp; false; \ 68 } 69 70include/autoconf.mk: FORCE 71 $(call cmd,autoconf) 72 73spl/include/autoconf.mk: FORCE 74 $(Q)mkdir -p $(dir $@) 75 $(call cmd,autoconf,-DCONFIG_SPL_BUILD) 76 77tpl/include/autoconf.mk: FORCE 78 $(Q)mkdir -p $(dir $@) 79 $(call cmd,autoconf,-DCONFIG_SPL_BUILD -DCONFIG_TPL_BUILD) 80 81include/autoconf.mk include/autoconf.mk.dep \ 82 spl/include/autoconf.mk tpl/include/autoconf.mk: include/config.h 83 84# include/config.h 85# Prior to Kconfig, it was generated by mkconfig. Now it is created here. 86define filechk_config_h 87 (echo "/* Automatically generated - do not edit */"; \ 88 for i in $$(echo $(CONFIG_SYS_EXTRA_OPTIONS) | sed 's/,/ /g'); do \ 89 echo \#define CONFIG_$$i \ 90 | sed '/=/ {s/=/ /;q; } ; { s/$$/ 1/; }'; \ 91 done; \ 92 echo \#define CONFIG_BOARDDIR board/$(if $(VENDOR),$(VENDOR)/)$(BOARD);\ 93 echo \#include \<config_defaults.h\>; \ 94 echo \#include \<config_uncmd_spl.h\>; \ 95 echo \#include \<configs/$(CONFIG_SYS_CONFIG_NAME).h\>; \ 96 echo \#include \<asm/config.h\>; \ 97 echo \#include \<config_fallbacks.h\>;) 98endef 99 100include/config.h: scripts/Makefile.autoconf create_symlink FORCE 101 $(call filechk,config_h) 102 103# symbolic links 104# If arch/$(ARCH)/mach-$(SOC)/include/mach exists, 105# make a symbolic link to that directory. 106# Otherwise, create a symbolic link to arch/$(ARCH)/include/asm/arch-$(SOC). 107PHONY += create_symlink 108create_symlink: 109ifneq ($(KBUILD_SRC),) 110 $(Q)mkdir -p include/asm 111 $(Q)if [ -d $(KBUILD_SRC)/arch/$(ARCH)/mach-$(SOC)/include/mach ]; then \ 112 dest=arch/$(ARCH)/mach-$(SOC)/include/mach; \ 113 else \ 114 dest=arch/$(ARCH)/include/asm/arch-$(if $(SOC),$(SOC),$(CPU)); \ 115 fi; \ 116 ln -fsn $(KBUILD_SRC)/$$dest include/asm/arch 117else 118 $(Q)if [ -d arch/$(ARCH)/mach-$(SOC)/include/mach ]; then \ 119 dest=../../mach-$(SOC)/include/mach; \ 120 else \ 121 dest=arch-$(if $(SOC),$(SOC),$(CPU)); \ 122 fi; \ 123 ln -fsn $$dest arch/$(ARCH)/include/asm/arch 124endif 125 126PHONY += FORCE 127FORCE: 128 129.PHONY: $(PHONY) 130