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 physmem_info.o ipl_parm.o ipl_report.o vmem.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-y   += $(if $(CONFIG_PIE_BUILD),machine_kexec_reloc.o,relocs.o)
  42 obj-$(findstring y, $(CONFIG_PROTECTED_VIRTUALIZATION_GUEST) $(CONFIG_PGSTE))   += uv.o
  43 obj-$(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 ifndef CONFIG_PIE_BUILD
  53 targets += relocs.S
  54 endif
  55
  56 OBJECTS := $(addprefix $(obj)/,$(obj-y))
  57 OBJECTS_ALL := $(addprefix $(obj)/,$(obj-all))
  58
  59 clean-files += vmlinux.map
  60
  61 quiet_cmd_section_cmp = SECTCMP $*
  62 define cmd_section_cmp
  63         s1=`$(OBJDUMP) -t "$<" | grep "\s$*\s\+" | sort | \
  64                 sed -n "/0000000000000000/! s/.*\s$*\s\+//p" | sha256sum`; \
  65         s2=`$(OBJDUMP) -t "$(word 2,$^)" | grep "\s$*\s\+" | sort | \
  66                 sed -n "/0000000000000000/! s/.*\s$*\s\+//p" | sha256sum`; \
  67         if [ "$$s1" != "$$s2" ]; then \
  68                 echo "error: section $* differs between $< and $(word 2,$^)" >&2; \
  69                 exit 1; \
  70         fi; \
  71         touch $@
  72 endef
  73
  74 $(obj)/bzImage: $(obj)/vmlinux $(obj)/section_cmp.boot.data $(obj)/section_cmp.boot.preserved.data FORCE
  75         $(call if_changed,objcopy)
  76
  77 $(obj)/section_cmp%: vmlinux $(obj)/vmlinux FORCE
  78         $(call if_changed,section_cmp)
  79
  80 LDFLAGS_vmlinux-$(CONFIG_LD_ORPHAN_WARN) := --orphan-handling=$(CONFIG_LD_ORPHAN_WARN_LEVEL)
  81 LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y) --oformat $(LD_BFD) -e startup $(if $(CONFIG_VMLINUX_MAP),-Map=$(obj)/vmlinux.map) --build-id=sha1 -T
  82 $(obj)/vmlinux: $(obj)/vmlinux.lds $(OBJECTS_ALL) FORCE
  83         $(call if_changed,ld)
  84
  85 LDFLAGS_vmlinux.syms := $(LDFLAGS_vmlinux-y) --oformat $(LD_BFD) -e startup -T
  86 $(obj)/vmlinux.syms: $(obj)/vmlinux.lds $(OBJECTS) FORCE
  87         $(call if_changed,ld)
  88
  89 quiet_cmd_dumpsyms = DUMPSYMS $<
  90 define cmd_dumpsyms
  91         $(NM) -n -S --format=bsd "$<" | sed -nE 's/^0*([0-9a-fA-F]+) 0*([0-9a-fA-F]+) [tT] ([^ ]*)$$/\1 \2 \3/p' | tr '\n' '\0' > "$@"
  92 endef
  93
  94 $(obj)/syms.bin: $(obj)/vmlinux.syms FORCE
  95         $(call if_changed,dumpsyms)
  96
  97 OBJCOPYFLAGS_syms.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.decompressor.syms
  98 $(obj)/syms.o: $(obj)/syms.bin FORCE
  99         $(call if_changed,objcopy)
 100
 101 OBJCOPYFLAGS_info.bin := -O binary --only-section=.vmlinux.info --set-section-flags .vmlinux.info=alloc,load
 102 $(obj)/info.bin: vmlinux FORCE
 103         $(call if_changed,objcopy)
 104
 105 OBJCOPYFLAGS_info.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.vmlinux.info
 106 $(obj)/info.o: $(obj)/info.bin FORCE
 107         $(call if_changed,objcopy)
 108
 109 OBJCOPYFLAGS_vmlinux.bin := -O binary --remove-section=.comment --remove-section=.vmlinux.info -S
 110 $(obj)/vmlinux.bin: vmlinux FORCE
 111         $(call if_changed,objcopy)
 112
 113 ifndef CONFIG_PIE_BUILD
 114 CMD_RELOCS=arch/s390/tools/relocs
 115 quiet_cmd_relocs = RELOCS $@
 116         cmd_relocs = $(CMD_RELOCS) $< > $@
 117 $(obj)/relocs.S: vmlinux FORCE
 118         $(call if_changed,relocs)
 119 endif
 120
 121 suffix-$(CONFIG_KERNEL_GZIP)  := .gz
 122 suffix-$(CONFIG_KERNEL_BZIP2) := .bz2
 123 suffix-$(CONFIG_KERNEL_LZ4)  := .lz4
 124 suffix-$(CONFIG_KERNEL_LZMA)  := .lzma
 125 suffix-$(CONFIG_KERNEL_LZO)  := .lzo
 126 suffix-$(CONFIG_KERNEL_XZ)  := .xz
 127 suffix-$(CONFIG_KERNEL_ZSTD)  := .zst
 128
 129 $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
 130         $(call if_changed,gzip)
 131 $(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin FORCE
 132         $(call if_changed,bzip2_with_size)
 133 $(obj)/vmlinux.bin.lz4: $(obj)/vmlinux.bin FORCE
 134         $(call if_changed,lz4_with_size)
 135 $(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE
 136         $(call if_changed,lzma_with_size)
 137 $(obj)/vmlinux.bin.lzo: $(obj)/vmlinux.bin FORCE
 138         $(call if_changed,lzo_with_size)
 139 $(obj)/vmlinux.bin.xz: $(obj)/vmlinux.bin FORCE
 140         $(call if_changed,xzkern_with_size)
 141 $(obj)/vmlinux.bin.zst: $(obj)/vmlinux.bin FORCE
 142         $(call if_changed,zstd22_with_size)
 143
 144 OBJCOPYFLAGS_piggy.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.vmlinux.bin.compressed
 145 $(obj)/piggy.o: $(obj)/vmlinux.bin$(suffix-y) FORCE
 146         $(call if_changed,objcopy)