arch/s390/boot/Makefile

   1 # SPDX-License-Identifier: GPL-2.0
   2 #
   3 # Makefile for the linux s390-specific parts of the memory manager.
   4 #
   5
   6 KCOV_INSTRUMENT := n
   7 GCOV_PROFILE := n
   8 UBSAN_SANITIZE := n
   9 KASAN_SANITIZE := n
  10
  11 KBUILD_AFLAGS := $(KBUILD_AFLAGS_DECOMPRESSOR)
  12 KBUILD_CFLAGS := $(KBUILD_CFLAGS_DECOMPRESSOR)
  13
  14 #
  15 # Use -march=z900 for als.c to be able to print an error
  16 # message if the kernel is started on a machine which is too old
  17 #
  18 ifneq ($(CC_FLAGS_MARCH),-march=z900)
  19 AFLAGS_REMOVE_head.o            += $(CC_FLAGS_MARCH)
  20 AFLAGS_head.o                   += -march=z900
  21 AFLAGS_REMOVE_mem.o             += $(CC_FLAGS_MARCH)
  22 AFLAGS_mem.o                    += -march=z900
  23 CFLAGS_REMOVE_als.o             += $(CC_FLAGS_MARCH)
  24 CFLAGS_als.o                    += -march=z900
  25 CFLAGS_REMOVE_sclp_early_core.o += $(CC_FLAGS_MARCH)
  26 CFLAGS_sclp_early_core.o        += -march=z900
  27 endif
  28
  29 CFLAGS_sclp_early_core.o += -I$(srctree)/drivers/s390/char
  30
  31 obj-y   := head.o als.o startup.o mem_detect.o ipl_parm.o string.o ebcdic.o
  32 obj-y   += sclp_early_core.o mem.o ipl_vmparm.o cmdline.o ctype.o
  33 targets := bzImage startup.a section_cmp.boot.data $(obj-y)
  34 subdir- := compressed
  35
  36 OBJECTS := $(addprefix $(obj)/,$(obj-y))
  37
  38 quiet_cmd_section_cmp = SECTCMP $*
  39 define cmd_section_cmp
  40         s1=`$(OBJDUMP) -t -j "$*" "$<" | sort | \
  41                 sed -n "/0000000000000000/! s/.*\s$*\s\+//p" | sha256sum`; \
  42         s2=`$(OBJDUMP) -t -j "$*" "$(word 2,$^)" | sort | \
  43                 sed -n "/0000000000000000/! s/.*\s$*\s\+//p" | sha256sum`; \
  44         if [ "$$s1" != "$$s2" ]; then \
  45                 echo "error: section $* differs between $< and $(word 2,$^)" >&2; \
  46                 exit 1; \
  47         fi; \
  48         touch $@
  49 endef
  50
  51 $(obj)/bzImage: $(obj)/compressed/vmlinux $(obj)/section_cmp.boot.data FORCE
  52         $(call if_changed,objcopy)
  53
  54 $(obj)/section_cmp%: vmlinux $(obj)/compressed/vmlinux FORCE
  55         $(call if_changed,section_cmp)
  56
  57 $(obj)/compressed/vmlinux: $(obj)/startup.a FORCE
  58         $(Q)$(MAKE) $(build)=$(obj)/compressed $@
  59
  60 $(obj)/startup.a: $(OBJECTS) FORCE
  61         $(call if_changed,ar)
  62
  63 install: $(CONFIGURE) $(obj)/bzImage
  64         sh -x  $(srctree)/$(obj)/install.sh $(KERNELRELEASE) $(obj)/bzImage \
  65               System.map "$(INSTALL_PATH)"
  66
  67 chkbss := $(obj-y)
  68 chkbss-target := startup.a
  69 include $(srctree)/arch/s390/scripts/Makefile.chkbss