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 KCSAN_SANITIZE := n
  11
  12 KBUILD_AFLAGS := $(KBUILD_AFLAGS_DECOMPRESSOR)
  13 KBUILD_CFLAGS := $(KBUILD_CFLAGS_DECOMPRESSOR)
  14
  15 #
  16 # Use minimum architecture for als.c to be able to print an error
  17 # message if the kernel is started on a machine which is too old
  18 #
  19 ifndef CONFIG_CC_IS_CLANG
  20 CC_FLAGS_MARCH_MINIMUM := -march=z900
  21 else
  22 CC_FLAGS_MARCH_MINIMUM := -march=z10
  23 endif
  24
  25 ifneq ($(CC_FLAGS_MARCH),$(CC_FLAGS_MARCH_MINIMUM))
  26 AFLAGS_REMOVE_head.o            += $(CC_FLAGS_MARCH)
  27 AFLAGS_head.o                   += $(CC_FLAGS_MARCH_MINIMUM)
  28 AFLAGS_REMOVE_mem.o             += $(CC_FLAGS_MARCH)
  29 AFLAGS_mem.o                    += $(CC_FLAGS_MARCH_MINIMUM)
  30 CFLAGS_REMOVE_als.o             += $(CC_FLAGS_MARCH)
  31 CFLAGS_als.o                    += $(CC_FLAGS_MARCH_MINIMUM)
  32 CFLAGS_REMOVE_sclp_early_core.o += $(CC_FLAGS_MARCH)
  33 CFLAGS_sclp_early_core.o        += $(CC_FLAGS_MARCH_MINIMUM)
  34 endif
  35
  36 CFLAGS_sclp_early_core.o += -I$(srctree)/drivers/s390/char
  37
  38 obj-y   := head.o als.o startup.o mem_detect.o ipl_parm.o ipl_report.o
  39 obj-y   += string.o ebcdic.o sclp_early_core.o mem.o ipl_vmparm.o cmdline.o
  40 obj-y   += version.o pgm_check_info.o ctype.o
  41 obj-$(findstring y, $(CONFIG_PROTECTED_VIRTUALIZATION_GUEST) $(CONFIG_PGSTE))   += uv.o
  42 obj-$(CONFIG_RELOCATABLE)       += machine_kexec_reloc.o
  43 obj-$(CONFIG_RANDOMIZE_BASE)    += kaslr.o
  44 targets := bzImage startup.a section_cmp.boot.data section_cmp.boot.preserved.data $(obj-y)
  45 subdir- := compressed
  46
  47 OBJECTS := $(addprefix $(obj)/,$(obj-y))
  48
  49 quiet_cmd_section_cmp = SECTCMP $*
  50 define cmd_section_cmp
  51         s1=`$(OBJDUMP) -t -j "$*" "$<" | sort | \
  52                 sed -n "/0000000000000000/! s/.*\s$*\s\+//p" | sha256sum`; \
  53         s2=`$(OBJDUMP) -t -j "$*" "$(word 2,$^)" | sort | \
  54                 sed -n "/0000000000000000/! s/.*\s$*\s\+//p" | sha256sum`; \
  55         if [ "$$s1" != "$$s2" ]; then \
  56                 echo "error: section $* differs between $< and $(word 2,$^)" >&2; \
  57                 exit 1; \
  58         fi; \
  59         touch $@
  60 endef
  61
  62 $(obj)/bzImage: $(obj)/compressed/vmlinux $(obj)/section_cmp.boot.data $(obj)/section_cmp.boot.preserved.data FORCE
  63         $(call if_changed,objcopy)
  64
  65 $(obj)/section_cmp%: vmlinux $(obj)/compressed/vmlinux FORCE
  66         $(call if_changed,section_cmp)
  67
  68 $(obj)/compressed/vmlinux: $(obj)/startup.a FORCE
  69         $(Q)$(MAKE) $(build)=$(obj)/compressed $@
  70
  71 $(obj)/startup.a: $(OBJECTS) FORCE
  72         $(call if_changed,ar)