1 # SPDX-License-Identifier: GPL-2.0 2 # This helper makefile is used for creating 3 # - symbolic links (arch/$ARCH/include/asm/arch 4 # - include/autoconf.mk, {spl,tpl}/include/autoconf.mk 5 # - include/config.h 6 # 7 # When our migration to Kconfig is done 8 # (= When we move all CONFIGs from header files to Kconfig) 9 # this makefile can be deleted. 10 11 __all: include/autoconf.mk include/autoconf.mk.dep 12 13 ifeq ($(shell grep -q '^CONFIG_SPL=y' include/config/auto.conf 2>/dev/null && echo y),y) 14 __all: spl/include/autoconf.mk 15 endif 16 17 ifeq ($(shell grep -q '^CONFIG_TPL=y' include/config/auto.conf 2>/dev/null && echo y),y) 18 __all: tpl/include/autoconf.mk 19 endif 20 21 include include/config/auto.conf 22 23 include scripts/Kbuild.include 24 25 # Need to define CC and CPP again here in case the top Makefile did not 26 # include config.mk. Some architectures expect CROSS_COMPILE to be defined 27 # in arch/$(ARCH)/config.mk 28 CC = $(CROSS_COMPILE)gcc 29 CPP = $(CC) -E 30 31 include config.mk 32 33 UBOOTINCLUDE := \ 34 -Iinclude \ 35 $(if $(KBUILD_SRC), -I$(srctree)/include) \ 36 -I$(srctree)/arch/$(ARCH)/include \ 37 -include $(srctree)/include/linux/kconfig.h 38 39 c_flags := $(KBUILD_CFLAGS) $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) \ 40 $(UBOOTINCLUDE) $(NOSTDINC_FLAGS) 41 42 quiet_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 } 47 include/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 57 quiet_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 67 quiet_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 76 u-boot.cfg: include/config.h FORCE 77 $(call cmd,u_boot_cfg) 78 79 spl/u-boot.cfg: include/config.h FORCE 80 $(Q)mkdir -p $(dir $@) 81 $(call cmd,u_boot_cfg,-DCONFIG_SPL_BUILD) 82 83 tpl/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 87 include/autoconf.mk: u-boot.cfg 88 $(call cmd,autoconf) 89 90 spl/include/autoconf.mk: spl/u-boot.cfg 91 $(Q)mkdir -p $(dir $@) 92 $(call cmd,autoconf) 93 94 tpl/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. 100 define 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/$$/ 1/; }'; \ 105 done; \ 106 echo \#define CONFIG_BOARDDIR board/$(if $(VENDOR),$(VENDOR)/)$(BOARD);\ 107 echo \#include \<config_defaults.h\>; \ 108 echo \#include \<config_uncmd_spl.h\>; \ 109 echo \#include \<configs/$(CONFIG_SYS_CONFIG_NAME).h\>; \ 110 echo \#include \<asm/config.h\>; \ 111 echo \#include \<linux/kconfig.h\>; \ 112 echo \#include \<config_fallbacks.h\>;) 113 endef 114 115 include/config.h: scripts/Makefile.autoconf create_symlink FORCE 116 $(call filechk,config_h) 117 118 # symbolic links 119 # If arch/$(ARCH)/mach-$(SOC)/include/mach exists, 120 # make a symbolic link to that directory. 121 # Otherwise, create a symbolic link to arch/$(ARCH)/include/asm/arch-$(SOC). 122 PHONY += create_symlink 123 create_symlink: 124 ifdef CONFIG_CREATE_ARCH_SYMLINK 125 ifneq ($(KBUILD_SRC),) 126 $(Q)mkdir -p include/asm 127 $(Q)if [ -d $(KBUILD_SRC)/arch/$(ARCH)/mach-$(SOC)/include/mach ]; then \ 128 dest=arch/$(ARCH)/mach-$(SOC)/include/mach; \ 129 else \ 130 dest=arch/$(ARCH)/include/asm/arch-$(if $(SOC),$(SOC),$(CPU)); \ 131 fi; \ 132 ln -fsn $(KBUILD_SRC)/$$dest include/asm/arch 133 else 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 140 endif 141 endif 142 143 PHONY += FORCE 144 FORCE: 145 146 .PHONY: $(PHONY) 147
