LXR linux/arch/s390/boot/compressed/Makefile

   1# SPDX-License-Identifier: GPL-2.0
   2#
   3# linux/arch/s390/boot/compressed/Makefile
   4#
   5# create a compressed vmlinux image from the original vmlinux
   6#
   7
   8KCOV_INSTRUMENT := n
   9GCOV_PROFILE := n
  10UBSAN_SANITIZE := n
  11KASAN_SANITIZE := n
  12
  13obj-y   := $(if $(CONFIG_KERNEL_UNCOMPRESSED),,decompressor.o) info.o
  14obj-$(CONFIG_KERNEL_ZSTD) += clz_ctz.o
  15obj-all := $(obj-y) piggy.o syms.o
  16targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2
  17targets += vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo vmlinux.bin.lz4
  18targets += vmlinux.bin.zst
  19targets += info.bin syms.bin vmlinux.syms $(obj-all)
  20
  21KBUILD_AFLAGS := $(KBUILD_AFLAGS_DECOMPRESSOR)
  22KBUILD_CFLAGS := $(KBUILD_CFLAGS_DECOMPRESSOR)
  23OBJCOPYFLAGS :=
  24
  25OBJECTS := $(addprefix $(obj)/,$(obj-y))
  26OBJECTS_ALL := $(addprefix $(obj)/,$(obj-all))
  27
  28LDFLAGS_vmlinux := --oformat $(LD_BFD) -e startup --build-id=sha1 -T
  29$(obj)/vmlinux: $(obj)/vmlinux.lds $(objtree)/arch/s390/boot/startup.a $(OBJECTS_ALL) FORCE
  30        $(call if_changed,ld)
  31
  32LDFLAGS_vmlinux.syms := --oformat $(LD_BFD) -e startup -T
  33$(obj)/vmlinux.syms: $(obj)/vmlinux.lds $(objtree)/arch/s390/boot/startup.a $(OBJECTS) FORCE
  34        $(call if_changed,ld)
  35
  36quiet_cmd_dumpsyms = DUMPSYMS $<
  37define cmd_dumpsyms
  38        $(NM) -n -S --format=bsd "$<" | sed -nE 's/^0*([0-9a-fA-F]+) 0*([0-9a-fA-F]+) [tT] ([^ ]*)$$/\1 \2 \3/p' | tr '\n' '\0' > "$@"
  39endef
  40
  41$(obj)/syms.bin: $(obj)/vmlinux.syms FORCE
  42        $(call if_changed,dumpsyms)
  43
  44OBJCOPYFLAGS_syms.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.decompressor.syms
  45$(obj)/syms.o: $(obj)/syms.bin FORCE
  46        $(call if_changed,objcopy)
  47
  48OBJCOPYFLAGS_info.bin := -O binary --only-section=.vmlinux.info --set-section-flags .vmlinux.info=load
  49$(obj)/info.bin: vmlinux FORCE
  50        $(call if_changed,objcopy)
  51
  52OBJCOPYFLAGS_info.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.vmlinux.info
  53$(obj)/info.o: $(obj)/info.bin FORCE
  54        $(call if_changed,objcopy)
  55
  56OBJCOPYFLAGS_vmlinux.bin := -O binary --remove-section=.comment --remove-section=.vmlinux.info -S
  57$(obj)/vmlinux.bin: vmlinux FORCE
  58        $(call if_changed,objcopy)
  59
  60vmlinux.bin.all-y := $(obj)/vmlinux.bin
  61
  62suffix-$(CONFIG_KERNEL_GZIP)  := .gz
  63suffix-$(CONFIG_KERNEL_BZIP2) := .bz2
  64suffix-$(CONFIG_KERNEL_LZ4)  := .lz4
  65suffix-$(CONFIG_KERNEL_LZMA)  := .lzma
  66suffix-$(CONFIG_KERNEL_LZO)  := .lzo
  67suffix-$(CONFIG_KERNEL_XZ)  := .xz
  68suffix-$(CONFIG_KERNEL_ZSTD)  := .zst
  69
  70$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
  71        $(call if_changed,gzip)
  72$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
  73        $(call if_changed,bzip2)
  74$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE
  75        $(call if_changed,lz4)
  76$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
  77        $(call if_changed,lzma)
  78$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
  79        $(call if_changed,lzo)
  80$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE
  81        $(call if_changed,xzkern)
  82$(obj)/vmlinux.bin.zst: $(vmlinux.bin.all-y) FORCE
  83        $(call if_changed,zstd22)
  84
  85OBJCOPYFLAGS_piggy.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.vmlinux.bin.compressed
  86$(obj)/piggy.o: $(obj)/vmlinux.bin$(suffix-y) FORCE
  87        $(call if_changed,objcopy)
  88