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