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
  12 obj-y   := $(if $(CONFIG_KERNEL_UNCOMPRESSED),,head.o misc.o) piggy.o
  13 targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2
  14 targets += vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo vmlinux.bin.lz4
  15 targets += vmlinux.scr.lds $(obj-y) $(if $(CONFIG_KERNEL_UNCOMPRESSED),,sizes.h)
  16
  17 KBUILD_AFLAGS := $(KBUILD_AFLAGS_DECOMPRESSOR)
  18 KBUILD_CFLAGS := $(KBUILD_CFLAGS_DECOMPRESSOR)
  19
  20 OBJECTS := $(addprefix $(obj)/,$(obj-y))
  21
  22 LDFLAGS_vmlinux := --oformat $(LD_BFD) -e startup -T
  23 $(obj)/vmlinux: $(obj)/vmlinux.lds $(objtree)/arch/s390/boot/startup.a $(OBJECTS) FORCE
  24         $(call if_changed,ld)
  25
  26 # extract required uncompressed vmlinux symbols and adjust them to reflect offsets inside vmlinux.bin
  27 sed-sizes := -e 's/^\([0-9a-fA-F]*\) . \(__bss_start\|_end\)$$/\#define SZ\2 (0x\1 - 0x100000)/p'
  28
  29 quiet_cmd_sizes = GEN     $@
  30       cmd_sizes = $(NM) $< | sed -n $(sed-sizes) > $@
  31
  32 $(obj)/sizes.h: vmlinux
  33         $(call if_changed,sizes)
  34
  35 AFLAGS_head.o += -I$(objtree)/$(obj)
  36 $(obj)/head.o: $(obj)/sizes.h
  37
  38 CFLAGS_misc.o += -I$(objtree)/$(obj)
  39 $(obj)/misc.o: $(obj)/sizes.h
  40
  41 OBJCOPYFLAGS_vmlinux.bin :=  -R .comment -S
  42 $(obj)/vmlinux.bin: vmlinux
  43         $(call if_changed,objcopy)
  44
  45 vmlinux.bin.all-y := $(obj)/vmlinux.bin
  46
  47 suffix-$(CONFIG_KERNEL_GZIP)  := .gz
  48 suffix-$(CONFIG_KERNEL_BZIP2) := .bz2
  49 suffix-$(CONFIG_KERNEL_LZ4)  := .lz4
  50 suffix-$(CONFIG_KERNEL_LZMA)  := .lzma
  51 suffix-$(CONFIG_KERNEL_LZO)  := .lzo
  52 suffix-$(CONFIG_KERNEL_XZ)  := .xz
  53
  54 $(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
  55         $(call if_changed,gzip)
  56 $(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
  57         $(call if_changed,bzip2)
  58 $(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE
  59         $(call if_changed,lz4)
  60 $(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
  61         $(call if_changed,lzma)
  62 $(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
  63         $(call if_changed,lzo)
  64 $(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE
  65         $(call if_changed,xzkern)
  66
  67 LDFLAGS_piggy.o := -r --format binary --oformat $(LD_BFD) -T
  68 $(obj)/piggy.o: $(obj)/vmlinux.scr.lds $(obj)/vmlinux.bin$(suffix-y)
  69         $(call if_changed,ld)
  70
  71 chkbss := $(filter-out $(obj)/misc.o $(obj)/piggy.o,$(OBJECTS))
  72 chkbss-target := $(obj)/vmlinux.bin
  73 include $(srctree)/arch/s390/scripts/Makefile.chkbss