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 ipl_data.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 obj-y   += $(if $(CONFIG_KERNEL_UNCOMPRESSED),,decompressor.o) info.o
  45 obj-$(CONFIG_KERNEL_ZSTD) += clz_ctz.o
  46 obj-all := $(obj-y) piggy.o syms.o
  47
  48 targets := bzImage section_cmp.boot.data section_cmp.boot.preserved.data $(obj-y)
  49 targets += vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2
  50 targets += vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo vmlinux.bin.lz4
  51 targets += vmlinux.bin.zst info.bin syms.bin vmlinux.syms $(obj-all)
  52
  53 OBJECTS := $(addprefix $(obj)/,$(obj-y))
  54 OBJECTS_ALL := $(addprefix $(obj)/,$(obj-all))
  55
  56 quiet_cmd_section_cmp = SECTCMP $*
  57 define cmd_section_cmp
  58         s1=`$(OBJDUMP) -t -j "$*" "$<" | sort | \
  59                 sed -n "/0000000000000000/! s/.*\s$*\s\+//p" | sha256sum`; \
  60         s2=`$(OBJDUMP) -t -j "$*" "$(word 2,$^)" | sort | \
  61                 sed -n "/0000000000000000/! s/.*\s$*\s\+//p" | sha256sum`; \
  62         if [ "$$s1" != "$$s2" ]; then \
  63                 echo "error: section $* differs between $< and $(word 2,$^)" >&2; \
  64                 exit 1; \
  65         fi; \
  66         touch $@
  67 endef
  68
  69 $(obj)/bzImage: $(obj)/vmlinux $(obj)/section_cmp.boot.data $(obj)/section_cmp.boot.preserved.data FORCE
  70         $(call if_changed,objcopy)
  71
  72 $(obj)/section_cmp%: vmlinux $(obj)/vmlinux FORCE
  73         $(call if_changed,section_cmp)
  74
  75 LDFLAGS_vmlinux := --oformat $(LD_BFD) -e startup --build-id=sha1 -T
  76 $(obj)/vmlinux: $(obj)/vmlinux.lds $(OBJECTS_ALL) FORCE
  77         $(call if_changed,ld)
  78
  79 LDFLAGS_vmlinux.syms := --oformat $(LD_BFD) -e startup -T
  80 $(obj)/vmlinux.syms: $(obj)/vmlinux.lds $(OBJECTS) FORCE
  81         $(call if_changed,ld)
  82
  83 quiet_cmd_dumpsyms = DUMPSYMS $<
  84 define cmd_dumpsyms
  85         $(NM) -n -S --format=bsd "$<" | sed -nE 's/^0*([0-9a-fA-F]+) 0*([0-9a-fA-F]+) [tT] ([^ ]*)$$/\1 \2 \3/p' | tr '\n' '\0' > "$@"
  86 endef
  87
  88 $(obj)/syms.bin: $(obj)/vmlinux.syms FORCE
  89         $(call if_changed,dumpsyms)
  90
  91 OBJCOPYFLAGS_syms.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.decompressor.syms
  92 $(obj)/syms.o: $(obj)/syms.bin FORCE
  93         $(call if_changed,objcopy)
  94
  95 OBJCOPYFLAGS_info.bin := -O binary --only-section=.vmlinux.info --set-section-flags .vmlinux.info=load
  96 $(obj)/info.bin: vmlinux FORCE
  97         $(call if_changed,objcopy)
  98
  99 OBJCOPYFLAGS_info.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.vmlinux.info
 100 $(obj)/info.o: $(obj)/info.bin FORCE
 101         $(call if_changed,objcopy)
 102
 103 OBJCOPYFLAGS_vmlinux.bin := -O binary --remove-section=.comment --remove-section=.vmlinux.info -S
 104 $(obj)/vmlinux.bin: vmlinux FORCE
 105         $(call if_changed,objcopy)
 106
 107 suffix-$(CONFIG_KERNEL_GZIP)  := .gz
 108 suffix-$(CONFIG_KERNEL_BZIP2) := .bz2
 109 suffix-$(CONFIG_KERNEL_LZ4)  := .lz4
 110 suffix-$(CONFIG_KERNEL_LZMA)  := .lzma
 111 suffix-$(CONFIG_KERNEL_LZO)  := .lzo
 112 suffix-$(CONFIG_KERNEL_XZ)  := .xz
 113 suffix-$(CONFIG_KERNEL_ZSTD)  := .zst
 114
 115 $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
 116         $(call if_changed,gzip)
 117 $(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin FORCE
 118         $(call if_changed,bzip2_with_size)
 119 $(obj)/vmlinux.bin.lz4: $(obj)/vmlinux.bin FORCE
 120         $(call if_changed,lz4_with_size)
 121 $(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE
 122         $(call if_changed,lzma_with_size)
 123 $(obj)/vmlinux.bin.lzo: $(obj)/vmlinux.bin FORCE
 124         $(call if_changed,lzo_with_size)
 125 $(obj)/vmlinux.bin.xz: $(obj)/vmlinux.bin FORCE
 126         $(call if_changed,xzkern_with_size)
 127 $(obj)/vmlinux.bin.zst: $(obj)/vmlinux.bin FORCE
 128         $(call if_changed,zstd22_with_size)
 129
 130 OBJCOPYFLAGS_piggy.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.vmlinux.bin.compressed
 131 $(obj)/piggy.o: $(obj)/vmlinux.bin$(suffix-y) FORCE
 132         $(call if_changed,objcopy)