89 lines
3.1 KiB
Makefile
89 lines
3.1 KiB
Makefile
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# SPDX-License-Identifier: GPL-2.0
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#
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# linux/arch/s390/boot/compressed/Makefile
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#
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# create a compressed vmlinux image from the original vmlinux
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#
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KCOV_INSTRUMENT := n
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GCOV_PROFILE := n
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UBSAN_SANITIZE := n
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KASAN_SANITIZE := n
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KCSAN_SANITIZE := n
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obj-y := $(if $(CONFIG_KERNEL_UNCOMPRESSED),,decompressor.o) info.o
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obj-$(CONFIG_KERNEL_ZSTD) += clz_ctz.o
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obj-all := $(obj-y) piggy.o syms.o
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targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2
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targets += vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo vmlinux.bin.lz4
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targets += vmlinux.bin.zst
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targets += info.bin syms.bin vmlinux.syms $(obj-all)
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KBUILD_AFLAGS := $(KBUILD_AFLAGS_DECOMPRESSOR)
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KBUILD_CFLAGS := $(KBUILD_CFLAGS_DECOMPRESSOR)
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OBJCOPYFLAGS :=
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OBJECTS := $(addprefix $(obj)/,$(obj-y))
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OBJECTS_ALL := $(addprefix $(obj)/,$(obj-all))
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LDFLAGS_vmlinux := --oformat $(LD_BFD) -e startup --build-id=sha1 -T
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$(obj)/vmlinux: $(obj)/vmlinux.lds $(objtree)/arch/s390/boot/startup.a $(OBJECTS_ALL) FORCE
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$(call if_changed,ld)
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LDFLAGS_vmlinux.syms := --oformat $(LD_BFD) -e startup -T
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$(obj)/vmlinux.syms: $(obj)/vmlinux.lds $(objtree)/arch/s390/boot/startup.a $(OBJECTS) FORCE
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$(call if_changed,ld)
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quiet_cmd_dumpsyms = DUMPSYMS $<
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define cmd_dumpsyms
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$(NM) -n -S --format=bsd "$<" | sed -nE 's/^0*([0-9a-fA-F]+) 0*([0-9a-fA-F]+) [tT] ([^ ]*)$$/\1 \2 \3/p' | tr '\n' '\0' > "$@"
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endef
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$(obj)/syms.bin: $(obj)/vmlinux.syms FORCE
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$(call if_changed,dumpsyms)
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OBJCOPYFLAGS_syms.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.decompressor.syms
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$(obj)/syms.o: $(obj)/syms.bin FORCE
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$(call if_changed,objcopy)
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OBJCOPYFLAGS_info.bin := -O binary --only-section=.vmlinux.info --set-section-flags .vmlinux.info=load
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$(obj)/info.bin: vmlinux FORCE
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$(call if_changed,objcopy)
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OBJCOPYFLAGS_info.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.vmlinux.info
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$(obj)/info.o: $(obj)/info.bin FORCE
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$(call if_changed,objcopy)
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OBJCOPYFLAGS_vmlinux.bin := -O binary --remove-section=.comment --remove-section=.vmlinux.info -S
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$(obj)/vmlinux.bin: vmlinux FORCE
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$(call if_changed,objcopy)
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vmlinux.bin.all-y := $(obj)/vmlinux.bin
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suffix-$(CONFIG_KERNEL_GZIP) := .gz
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suffix-$(CONFIG_KERNEL_BZIP2) := .bz2
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suffix-$(CONFIG_KERNEL_LZ4) := .lz4
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suffix-$(CONFIG_KERNEL_LZMA) := .lzma
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suffix-$(CONFIG_KERNEL_LZO) := .lzo
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suffix-$(CONFIG_KERNEL_XZ) := .xz
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suffix-$(CONFIG_KERNEL_ZSTD) := .zst
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$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
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$(call if_changed,gzip)
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$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
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$(call if_changed,bzip2)
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$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE
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$(call if_changed,lz4)
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$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
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$(call if_changed,lzma)
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$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
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$(call if_changed,lzo)
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$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE
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$(call if_changed,xzkern)
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$(obj)/vmlinux.bin.zst: $(vmlinux.bin.all-y) FORCE
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$(call if_changed,zstd22)
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OBJCOPYFLAGS_piggy.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.vmlinux.bin.compressed
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$(obj)/piggy.o: $(obj)/vmlinux.bin$(suffix-y) FORCE
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$(call if_changed,objcopy)
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