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