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
  10 targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2
  11 targets += vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo vmlinux.bin.lz4
  12 targets += misc.o piggy.o sizes.h head.o
  13
  14 KBUILD_CFLAGS := -m64 -D__KERNEL__ -O2
  15 KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
  16 KBUILD_CFLAGS += $(cflags-y) -fno-delete-null-pointer-checks -msoft-float
  17 KBUILD_CFLAGS += $(call cc-option,-mpacked-stack)
  18 KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
  19
  20 GCOV_PROFILE := n
  21 UBSAN_SANITIZE := n
  22
  23 OBJECTS := $(addprefix $(objtree)/arch/s390/kernel/, head.o ebcdic.o als.o)
  24 OBJECTS += $(objtree)/drivers/s390/char/sclp_early_core.o
  25 OBJECTS += $(obj)/head.o $(obj)/misc.o $(obj)/piggy.o
  26
  27 LDFLAGS_vmlinux := --oformat $(LD_BFD) -e startup -T
  28 $(obj)/vmlinux: $(obj)/vmlinux.lds $(OBJECTS)
  29         $(call if_changed,ld)
  30
  31 sed-sizes := -e 's/^\([0-9a-fA-F]*\) . \(__bss_start\|_end\)$$/\#define SZ\2 0x\1/p'
  32
  33 quiet_cmd_sizes = GEN $@
  34       cmd_sizes = $(NM) $< | sed -n $(sed-sizes) > $@
  35
  36 $(obj)/sizes.h: vmlinux
  37         $(call if_changed,sizes)
  38
  39 AFLAGS_head.o += -I$(objtree)/$(obj)
  40 $(obj)/head.o: $(obj)/sizes.h
  41
  42 CFLAGS_misc.o += -I$(objtree)/$(obj)
  43 $(obj)/misc.o: $(obj)/sizes.h
  44
  45 OBJCOPYFLAGS_vmlinux.bin :=  -R .comment -S
  46 $(obj)/vmlinux.bin: vmlinux
  47         $(call if_changed,objcopy)
  48
  49 vmlinux.bin.all-y := $(obj)/vmlinux.bin
  50
  51 suffix-$(CONFIG_KERNEL_GZIP)  := gz
  52 suffix-$(CONFIG_KERNEL_BZIP2) := bz2
  53 suffix-$(CONFIG_KERNEL_LZ4)  := lz4
  54 suffix-$(CONFIG_KERNEL_LZMA)  := lzma
  55 suffix-$(CONFIG_KERNEL_LZO)  := lzo
  56 suffix-$(CONFIG_KERNEL_XZ)  := xz
  57
  58 $(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y)
  59         $(call if_changed,gzip)
  60 $(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y)
  61         $(call if_changed,bzip2)
  62 $(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y)
  63         $(call if_changed,lz4)
  64 $(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y)
  65         $(call if_changed,lzma)
  66 $(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y)
  67         $(call if_changed,lzo)
  68 $(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y)
  69         $(call if_changed,xzkern)
  70
  71 LDFLAGS_piggy.o := -r --format binary --oformat $(LD_BFD) -T
  72 $(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix-y)
  73         $(call if_changed,ld)