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) piggy.o info.o
  14 targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2
  15 targets += vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo vmlinux.bin.lz4
  16 targets += info.bin $(obj-y)
  17
  18 KBUILD_AFLAGS := $(KBUILD_AFLAGS_DECOMPRESSOR)
  19 KBUILD_CFLAGS := $(KBUILD_CFLAGS_DECOMPRESSOR)
  20 OBJCOPYFLAGS :=
  21
  22 OBJECTS := $(addprefix $(obj)/,$(obj-y))
  23
  24 LDFLAGS_vmlinux := --oformat $(LD_BFD) -e startup -T
  25 $(obj)/vmlinux: $(obj)/vmlinux.lds $(objtree)/arch/s390/boot/startup.a $(OBJECTS) FORCE
  26         $(call if_changed,ld)
  27
  28 OBJCOPYFLAGS_info.bin := -O binary --only-section=.vmlinux.info --set-section-flags .vmlinux.info=load
  29 $(obj)/info.bin: vmlinux FORCE
  30         $(call if_changed,objcopy)
  31
  32 OBJCOPYFLAGS_info.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.vmlinux.info
  33 $(obj)/info.o: $(obj)/info.bin FORCE
  34         $(call if_changed,objcopy)
  35
  36 OBJCOPYFLAGS_vmlinux.bin := -O binary --remove-section=.comment --remove-section=.vmlinux.info -S
  37 $(obj)/vmlinux.bin: vmlinux FORCE
  38         $(call if_changed,objcopy)
  39
  40 vmlinux.bin.all-y := $(obj)/vmlinux.bin
  41
  42 suffix-$(CONFIG_KERNEL_GZIP)  := .gz
  43 suffix-$(CONFIG_KERNEL_BZIP2) := .bz2
  44 suffix-$(CONFIG_KERNEL_LZ4)  := .lz4
  45 suffix-$(CONFIG_KERNEL_LZMA)  := .lzma
  46 suffix-$(CONFIG_KERNEL_LZO)  := .lzo
  47 suffix-$(CONFIG_KERNEL_XZ)  := .xz
  48
  49 $(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
  50         $(call if_changed,gzip)
  51 $(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
  52         $(call if_changed,bzip2)
  53 $(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE
  54         $(call if_changed,lz4)
  55 $(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
  56         $(call if_changed,lzma)
  57 $(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
  58         $(call if_changed,lzo)
  59 $(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE
  60         $(call if_changed,xzkern)
  61
  62 OBJCOPYFLAGS_piggy.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.vmlinux.bin.compressed
  63 $(obj)/piggy.o: $(obj)/vmlinux.bin$(suffix-y) FORCE
  64         $(call if_changed,objcopy)
  65
  66 chkbss := $(filter-out piggy.o info.o, $(obj-y))
  67 chkbss-target := vmlinux.bin
  68 include $(srctree)/arch/s390/scripts/Makefile.chkbss