1# SPDX-License-Identifier: GPL-2.0 2# This helper makefile is used for creating 3# - symbolic links (arch/$ARCH/include/asm/arch 4# - include/autoconf.mk, {spl,tpl}/include/autoconf.mk 5# - include/config.h 6# 7# When our migration to Kconfig is done 8# (= When we move all CONFIGs from header files to Kconfig) 9# this makefile can be deleted. 10 11__all: include/autoconf.mk include/autoconf.mk.dep 12 13ifeq ($(shell grep -q '^CONFIG_SPL=y' include/config/auto.conf 2>/dev/null && echo y),y) 14__all: spl/include/autoconf.mk 15endif 16 17ifeq ($(shell grep -q '^CONFIG_TPL=y' include/config/auto.conf 2>/dev/null && echo y),y) 18__all: tpl/include/autoconf.mk 19endif 20 21include include/config/auto.conf 22 23include scripts/Kbuild.include 24 25# Need to define CC and CPP again here in case the top Makefile did not 26# include config.mk. Some architectures expect CROSS_COMPILE to be defined 27# in arch/$(ARCH)/config.mk 28CC = $(CROSS_COMPILE)gcc 29CPP = $(CC) -E 30 31include config.mk 32 33UBOOTINCLUDE := \ 34 -Iinclude \ 35 $(if $(KBUILD_SRC), -I$(srctree)/include) \ 36 -I$(srctree)/arch/$(ARCH)/include \ 37 -include $(srctree)/include/linux/kconfig.h 38 39c_flags := $(KBUILD_CFLAGS) $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) \ 40 $(UBOOTINCLUDE) $(NOSTDINC_FLAGS) 41 42quiet_cmd_autoconf_dep = GEN $@ 43 cmd_autoconf_dep = $(CC) -x c -DDO_DEPS_ONLY -M -MP $(c_flags) \ 44 -MQ include/config/auto.conf $(srctree)/include/common.h > $@ || { \ 45 rm $@; false; \ 46 } 47include/autoconf.mk.dep: include/config.h FORCE 48 $(call cmd,autoconf_dep) 49 50# We are migrating from board headers to Kconfig little by little. 51# In the interim, we use both of 52# - include/config/auto.conf (generated by Kconfig) 53# - include/autoconf.mk (used in the U-Boot conventional configuration) 54# The following rule creates autoconf.mk 55# include/config/auto.conf is grepped in order to avoid duplication of the 56# same CONFIG macros 57quiet_cmd_autoconf = GEN $@ 58 cmd_autoconf = \ 59 sed -n -f $(srctree)/tools/scripts/define2mk.sed $< | \ 60 while read line; do \ 61 if [ -n "${KCONFIG_IGNORE_DUPLICATES}" ] || \ 62 ! grep -q "$${line%=*}=" include/config/auto.conf; then \ 63 echo "$$line"; \ 64 fi \ 65 done > $@ 66 67quiet_cmd_u_boot_cfg = CFG $@ 68 cmd_u_boot_cfg = \ 69 $(CPP) $(c_flags) $2 -DDO_DEPS_ONLY -dM $(srctree)/include/common.h > $@.tmp && { \ 70 grep 'define CONFIG_' $@.tmp > $@; \ 71 rm $@.tmp; \ 72 } || { \ 73 rm $@.tmp; false; \ 74 } 75 76u-boot.cfg: include/config.h FORCE 77 $(call cmd,u_boot_cfg) 78 79spl/u-boot.cfg: include/config.h FORCE 80 $(Q)mkdir -p $(dir $@) 81 $(call cmd,u_boot_cfg,-DCONFIG_SPL_BUILD) 82 83tpl/u-boot.cfg: include/config.h FORCE 84 $(Q)mkdir -p $(dir $@) 85 $(call cmd,u_boot_cfg,-DCONFIG_SPL_BUILD -DCONFIG_TPL_BUILD) 86 87include/autoconf.mk: u-boot.cfg 88 $(call cmd,autoconf) 89 90spl/include/autoconf.mk: spl/u-boot.cfg 91 $(Q)mkdir -p $(dir $@) 92 $(call cmd,autoconf) 93 94tpl/include/autoconf.mk: tpl/u-boot.cfg 95 $(Q)mkdir -p $(dir $@) 96 $(call cmd,autoconf) 97 98# include/config.h 99# Prior to Kconfig, it was generated by mkconfig. Now it is created here. 100define filechk_config_h 101 (echo "/* Automatically generated - do not edit */"; \ 102 for i in $$(echo $(CONFIG_SYS_EXTRA_OPTIONS) | sed 's/,/ /g'); do \ 103 echo \#define CONFIG_$$i \ 104 | sed '/=/ {s/=/ /;q; } ; { s/$$/ 1/; }'; \ 105 done; \ 106 echo \#define CONFIG_BOARDDIR board/$(if $(VENDOR),$(VENDOR)/)$(BOARD);\ 107 echo \#include \<config_defaults.h\>; \ 108 echo \#include \<config_uncmd_spl.h\>; \ 109 echo \#include \<configs/$(CONFIG_SYS_CONFIG_NAME).h\>; \ 110 echo \#include \<asm/config.h\>; \ 111 echo \#include \<linux/kconfig.h\>; \ 112 echo \#include \<config_fallbacks.h\>;) 113endef 114 115include/config.h: scripts/Makefile.autoconf create_symlink FORCE 116 $(call filechk,config_h) 117 118# symbolic links 119# If arch/$(ARCH)/mach-$(SOC)/include/mach exists, 120# make a symbolic link to that directory. 121# Otherwise, create a symbolic link to arch/$(ARCH)/include/asm/arch-$(SOC). 122PHONY += create_symlink 123create_symlink: 124ifdef CONFIG_CREATE_ARCH_SYMLINK 125ifneq ($(KBUILD_SRC),) 126 $(Q)mkdir -p include/asm 127 $(Q)if [ -d $(KBUILD_SRC)/arch/$(ARCH)/mach-$(SOC)/include/mach ]; then \ 128 dest=arch/$(ARCH)/mach-$(SOC)/include/mach; \ 129 else \ 130 dest=arch/$(ARCH)/include/asm/arch-$(if $(SOC),$(SOC),$(CPU)); \ 131 fi; \ 132 ln -fsn $(KBUILD_SRC)/$$dest include/asm/arch 133else 134 $(Q)if [ -d arch/$(ARCH)/mach-$(SOC)/include/mach ]; then \ 135 dest=../../mach-$(SOC)/include/mach; \ 136 else \ 137 dest=arch-$(if $(SOC),$(SOC),$(CPU)); \ 138 fi; \ 139 ln -fsn $$dest arch/$(ARCH)/include/asm/arch 140endif 141endif 142 143PHONY += FORCE 144FORCE: 145 146.PHONY: $(PHONY) 147