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Tom Rini83d290c2018-05-06 17:58:06 -04001# SPDX-License-Identifier: GPL-2.0
Masahiro Yamada51148792014-07-30 14:08:17 +09002# This helper makefile is used for creating
3# - symbolic links (arch/$ARCH/include/asm/arch
4# - include/autoconf.mk, {spl,tpl}/include/autoconf.mk
5# - include/config.h
6#
7# When our migration to Kconfig is done
8# (= When we move all CONFIGs from header files to Kconfig)
9# this makefile can be deleted.
10
Masahiro Yamadae02ee252015-02-24 22:26:20 +090011__all: include/autoconf.mk include/autoconf.mk.dep
12
13ifeq ($(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 ($(shell grep -q '^CONFIG_TPL=y' include/config/auto.conf 2>/dev/null && echo y),y)
18__all: tpl/include/autoconf.mk
19endif
20
21include include/config/auto.conf
Masahiro Yamada51148792014-07-30 14:08:17 +090022
23include scripts/Kbuild.include
24
25# Need to define CC and CPP again here in case the top Makefile did not
26# include config.mk. Some architectures expect CROSS_COMPILE to be defined
27# in arch/$(ARCH)/config.mk
28CC = $(CROSS_COMPILE)gcc
29CPP = $(CC) -E
30
31include config.mk
32
33UBOOTINCLUDE := \
Masahiro Yamada51148792014-07-30 14:08:17 +090034 -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 }
Masahiro Yamada14069922016-09-26 13:05:00 +090047include/autoconf.mk.dep: include/config.h FORCE
Masahiro Yamada51148792014-07-30 14:08:17 +090048 $(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 = \
Masahiro Yamadae19b0fb2016-09-26 13:05:01 +090059 sed -n -f $(srctree)/tools/scripts/define2mk.sed $< | \
Masahiro Yamada51148792014-07-30 14:08:17 +090060 while read line; do \
Joe Hershberger7740f652015-05-19 13:21:18 -050061 if [ -n "${KCONFIG_IGNORE_DUPLICATES}" ] || \
62 ! grep -q "$${line%=*}=" include/config/auto.conf; then \
Masahiro Yamada51148792014-07-30 14:08:17 +090063 echo "$$line"; \
64 fi \
Masahiro Yamadae19b0fb2016-09-26 13:05:01 +090065 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; \
Masahiro Yamada51148792014-07-30 14:08:17 +090074 }
75
Masahiro Yamadae19b0fb2016-09-26 13:05:01 +090076u-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
Masahiro Yamada51148792014-07-30 14:08:17 +090088 $(call cmd,autoconf)
89
Masahiro Yamadae19b0fb2016-09-26 13:05:01 +090090spl/include/autoconf.mk: spl/u-boot.cfg
Masahiro Yamadae02ee252015-02-24 22:26:20 +090091 $(Q)mkdir -p $(dir $@)
Masahiro Yamadae19b0fb2016-09-26 13:05:01 +090092 $(call cmd,autoconf)
Masahiro Yamadae02ee252015-02-24 22:26:20 +090093
Masahiro Yamadae19b0fb2016-09-26 13:05:01 +090094tpl/include/autoconf.mk: tpl/u-boot.cfg
Masahiro Yamadae02ee252015-02-24 22:26:20 +090095 $(Q)mkdir -p $(dir $@)
Masahiro Yamadae19b0fb2016-09-26 13:05:01 +090096 $(call cmd,autoconf)
Masahiro Yamadae02ee252015-02-24 22:26:20 +090097
Masahiro Yamada51148792014-07-30 14:08:17 +090098# 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/$$/ 1/; }'; \
105 done; \
106 echo \#define CONFIG_BOARDDIR board/$(if $(VENDOR),$(VENDOR)/)$(BOARD);\
Masahiro Yamadae02ee252015-02-24 22:26:20 +0900107 echo \#include \<config_uncmd_spl.h\>; \
Masahiro Yamada51148792014-07-30 14:08:17 +0900108 echo \#include \<configs/$(CONFIG_SYS_CONFIG_NAME).h\>; \
109 echo \#include \<asm/config.h\>; \
Patrick Delaunay4ac96342017-01-27 11:00:40 +0100110 echo \#include \<linux/kconfig.h\>; \
Masahiro Yamadae02ee252015-02-24 22:26:20 +0900111 echo \#include \<config_fallbacks.h\>;)
Masahiro Yamada51148792014-07-30 14:08:17 +0900112endef
113
114include/config.h: scripts/Makefile.autoconf create_symlink FORCE
115 $(call filechk,config_h)
116
117# symbolic links
Masahiro Yamada0e7368c2015-02-20 17:04:12 +0900118# If arch/$(ARCH)/mach-$(SOC)/include/mach exists,
119# make a symbolic link to that directory.
120# Otherwise, create a symbolic link to arch/$(ARCH)/include/asm/arch-$(SOC).
Masahiro Yamada51148792014-07-30 14:08:17 +0900121PHONY += create_symlink
122create_symlink:
Masahiro Yamadaa350c6a2015-07-15 20:59:29 +0900123ifdef CONFIG_CREATE_ARCH_SYMLINK
Masahiro Yamada51148792014-07-30 14:08:17 +0900124ifneq ($(KBUILD_SRC),)
125 $(Q)mkdir -p include/asm
Masahiro Yamada0e7368c2015-02-20 17:04:12 +0900126 $(Q)if [ -d $(KBUILD_SRC)/arch/$(ARCH)/mach-$(SOC)/include/mach ]; then \
127 dest=arch/$(ARCH)/mach-$(SOC)/include/mach; \
128 else \
129 dest=arch/$(ARCH)/include/asm/arch-$(if $(SOC),$(SOC),$(CPU)); \
130 fi; \
131 ln -fsn $(KBUILD_SRC)/$$dest include/asm/arch
Masahiro Yamadaffe29eb2014-10-30 11:06:11 +0900132else
Masahiro Yamada0e7368c2015-02-20 17:04:12 +0900133 $(Q)if [ -d arch/$(ARCH)/mach-$(SOC)/include/mach ]; then \
134 dest=../../mach-$(SOC)/include/mach; \
135 else \
136 dest=arch-$(if $(SOC),$(SOC),$(CPU)); \
137 fi; \
138 ln -fsn $$dest arch/$(ARCH)/include/asm/arch
Masahiro Yamada51148792014-07-30 14:08:17 +0900139endif
Masahiro Yamadaa350c6a2015-07-15 20:59:29 +0900140endif
Masahiro Yamada51148792014-07-30 14:08:17 +0900141
142PHONY += FORCE
143FORCE:
144
145.PHONY: $(PHONY)