1# This helper makefile is used for creating 2# - symbolic links (arch/$ARCH/include/asm/arch 3# - include/autoconf.mk, {spl,tpl}/include/autoconf.mk 4# - include/config.h 5# 6# When our migration to Kconfig is done 7# (= When we move all CONFIGs from header files to Kconfig) 8# this makefile can be deleted. 9# 10# SPDX-License-Identifier: GPL-2.0 11# 12 13__all: include/autoconf.mk include/autoconf.mk.dep 14 15ifeq ($(shell grep -q '^CONFIG_SPL=y' include/config/auto.conf 2>/dev/null && echo y),y) 16__all: spl/include/autoconf.mk 17endif 18 19ifeq ($(shell grep -q '^CONFIG_TPL=y' include/config/auto.conf 2>/dev/null && echo y),y) 20__all: tpl/include/autoconf.mk 21endif 22 23include include/config/auto.conf 24 25include scripts/Kbuild.include 26 27# Need to define CC and CPP again here in case the top Makefile did not 28# include config.mk. Some architectures expect CROSS_COMPILE to be defined 29# in arch/$(ARCH)/config.mk 30CC = $(CROSS_COMPILE)gcc 31CPP = $(CC) -E 32 33include config.mk 34 35UBOOTINCLUDE := \ 36 -Iinclude \ 37 $(if $(KBUILD_SRC), -I$(srctree)/include) \ 38 -I$(srctree)/arch/$(ARCH)/include \ 39 -include $(srctree)/include/linux/kconfig.h 40 41c_flags := $(KBUILD_CFLAGS) $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) \ 42 $(UBOOTINCLUDE) $(NOSTDINC_FLAGS) 43 44quiet_cmd_autoconf_dep = GEN $@ 45 cmd_autoconf_dep = $(CC) -x c -DDO_DEPS_ONLY -M -MP $(c_flags) \ 46 -MQ include/config/auto.conf $(srctree)/include/common.h > $@ || { \ 47 rm $@; false; \ 48 } 49include/autoconf.mk.dep: FORCE 50 $(call cmd,autoconf_dep) 51 52# We are migrating from board headers to Kconfig little by little. 53# In the interim, we use both of 54# - include/config/auto.conf (generated by Kconfig) 55# - include/autoconf.mk (used in the U-Boot conventional configuration) 56# The following rule creates autoconf.mk 57# include/config/auto.conf is grepped in order to avoid duplication of the 58# same CONFIG macros 59quiet_cmd_autoconf = GEN $@ 60 cmd_autoconf = \ 61 $(CPP) $(c_flags) $2 -DDO_DEPS_ONLY -dM $(srctree)/include/common.h > $@.tmp && { \ 62 sed -n -f $(srctree)/tools/scripts/define2mk.sed $@.tmp | \ 63 while read line; do \ 64 if [ -n "${KCONFIG_IGNORE_DUPLICATES}" ] || \ 65 ! grep -q "$${line%=*}=" include/config/auto.conf; then \ 66 echo "$$line"; \ 67 fi \ 68 done > $@; \ 69 rm $@.tmp; \ 70 } || { \ 71 rm $@.tmp; false; \ 72 } 73 74include/autoconf.mk: FORCE 75 $(call cmd,autoconf) 76 77spl/include/autoconf.mk: FORCE 78 $(Q)mkdir -p $(dir $@) 79 $(call cmd,autoconf,-DCONFIG_SPL_BUILD) 80 81tpl/include/autoconf.mk: FORCE 82 $(Q)mkdir -p $(dir $@) 83 $(call cmd,autoconf,-DCONFIG_SPL_BUILD -DCONFIG_TPL_BUILD) 84 85include/autoconf.mk include/autoconf.mk.dep \ 86 spl/include/autoconf.mk tpl/include/autoconf.mk: include/config.h 87 88# include/config.h 89# Prior to Kconfig, it was generated by mkconfig. Now it is created here. 90define filechk_config_h 91 (echo "/* Automatically generated - do not edit */"; \ 92 for i in $$(echo $(CONFIG_SYS_EXTRA_OPTIONS) | sed 's/,/ /g'); do \ 93 echo \#define CONFIG_$$i \ 94 | sed '/=/ {s/=/ /;q; } ; { s/$$/ 1/; }'; \ 95 done; \ 96 echo \#define CONFIG_BOARDDIR board/$(if $(VENDOR),$(VENDOR)/)$(BOARD);\ 97 echo \#include \<config_defaults.h\>; \ 98 echo \#include \<config_uncmd_spl.h\>; \ 99 echo \#include \<configs/$(CONFIG_SYS_CONFIG_NAME).h\>; \ 100 echo \#include \<asm/config.h\>; \ 101 echo \#include \<config_fallbacks.h\>;) 102endef 103 104include/config.h: scripts/Makefile.autoconf create_symlink FORCE 105 $(call filechk,config_h) 106 107# symbolic links 108# If arch/$(ARCH)/mach-$(SOC)/include/mach exists, 109# make a symbolic link to that directory. 110# Otherwise, create a symbolic link to arch/$(ARCH)/include/asm/arch-$(SOC). 111PHONY += create_symlink 112create_symlink: 113ifdef CONFIG_CREATE_ARCH_SYMLINK 114ifneq ($(KBUILD_SRC),) 115 $(Q)mkdir -p include/asm 116 $(Q)if [ -d $(KBUILD_SRC)/arch/$(ARCH)/mach-$(SOC)/include/mach ]; then \ 117 dest=arch/$(ARCH)/mach-$(SOC)/include/mach; \ 118 else \ 119 dest=arch/$(ARCH)/include/asm/arch-$(if $(SOC),$(SOC),$(CPU)); \ 120 fi; \ 121 ln -fsn $(KBUILD_SRC)/$$dest include/asm/arch 122else 123 $(Q)if [ -d arch/$(ARCH)/mach-$(SOC)/include/mach ]; then \ 124 dest=../../mach-$(SOC)/include/mach; \ 125 else \ 126 dest=arch-$(if $(SOC),$(SOC),$(CPU)); \ 127 fi; \ 128 ln -fsn $$dest arch/$(ARCH)/include/asm/arch 129endif 130endif 131 132PHONY += FORCE 133FORCE: 134 135.PHONY: $(PHONY) 136