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https://github.com/AsahiLinux/u-boot
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254d68b601
U-Boot has supported two kinds of asm-offsets.h.
One is generic for all architectures and its source is located at
./lib/asm-offsets.c.
The other is SoC specific and its source is under SoC directory.
The problem here is that only boards with SoC directory can use
the asm-offsets infrastructure.
Putting asm-offsets.c right under CPU directory does not work.
Now a new demand is coming. PowerPC folks want to use asm-offsets.
But no PowerPC boards have SoC directory.
It seems inconsistent that some boards add asm-offsets.c to SoC
directoreis and some to CPU directories.
It looks more reasonable to put asm-offsets.c under arch/$(ARCH)/lib.
This commit merges asm-offsets.c under SoC directories into
arch/$(ARCH)/lib/asm-offsets.c.
By the way, I doubt the necessity of some entries in asm-offsets.c.
I am leaving refactoring to the board maintainers.
Please check "TODO" in the comment blocks in
arch/{arm,nds32}/lib/asm-offsets.c.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Yuantian Tang <Yuantian.Tang@freescale.com>
87 lines
2.2 KiB
Makefile
87 lines
2.2 KiB
Makefile
#
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# Kbuild for top-level directory of U-Boot
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# This file takes care of the following:
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# 1) Generate generic-asm-offsets.h
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# 2) Generate asm-offsets.h
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#####
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# 1) Generate generic-asm-offsets.h
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generic-offsets-file := include/generated/generic-asm-offsets.h
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always := $(generic-offsets-file)
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targets := $(generic-offsets-file) lib/asm-offsets.s
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quiet_cmd_generic-offsets = GEN $@
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define cmd_generic-offsets
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(set -e; \
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echo "#ifndef __GENERIC_ASM_OFFSETS_H__"; \
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echo "#define __GENERIC_ASM_OFFSETS_H__"; \
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echo "/*"; \
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echo " * DO NOT MODIFY."; \
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echo " *"; \
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echo " * This file was generated by Kbuild"; \
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echo " *"; \
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echo " */"; \
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echo ""; \
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sed -ne $(sed-y) $<; \
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echo ""; \
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echo "#endif" ) > $@
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endef
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# We use internal kbuild rules to avoid the "is up to date" message from make
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lib/asm-offsets.s: lib/asm-offsets.c FORCE
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$(Q)mkdir -p $(dir $@)
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$(call if_changed_dep,cc_s_c)
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$(obj)/$(generic-offsets-file): lib/asm-offsets.s Kbuild
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$(Q)mkdir -p $(dir $@)
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$(call cmd,generic-offsets)
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#####
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# 2) Generate asm-offsets.h
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#
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ifneq ($(wildcard $(srctree)/arch/$(ARCH)/lib/asm-offsets.c),)
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offsets-file := include/generated/asm-offsets.h
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endif
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always += $(offsets-file)
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targets += $(offsets-file)
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targets += arch/$(ARCH)/lib/asm-offsets.s
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# Default sed regexp - multiline due to syntax constraints
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define sed-y
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"/^->/{s:->#\(.*\):/* \1 */:; \
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s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \
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s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
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s:->::; p;}"
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endef
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CFLAGS_asm-offsets.o := -DDO_DEPS_ONLY
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quiet_cmd_offsets = GEN $@
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define cmd_offsets
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(set -e; \
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echo "#ifndef __ASM_OFFSETS_H__"; \
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echo "#define __ASM_OFFSETS_H__"; \
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echo "/*"; \
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echo " * DO NOT MODIFY."; \
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echo " *"; \
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echo " * This file was generated by Kbuild"; \
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echo " *"; \
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echo " */"; \
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echo ""; \
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sed -ne $(sed-y) $<; \
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echo ""; \
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echo "#endif" ) > $@
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endef
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# We use internal kbuild rules to avoid the "is up to date" message from make
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arch/$(ARCH)/lib/asm-offsets.s: arch/$(ARCH)/lib/asm-offsets.c FORCE
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$(Q)mkdir -p $(dir $@)
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$(call if_changed_dep,cc_s_c)
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$(obj)/$(offsets-file): arch/$(ARCH)/lib/asm-offsets.s Kbuild
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$(call cmd,offsets)
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