1 # SPDX-License-Identifier: GPL-2.0 2 # 3 # Makefile for the linux s390-specific parts of the memory manager. 4 # 5 6 # Tooling runtimes are unavailable and cannot be linked for early boot code 7 KCOV_INSTRUMENT := n 8 GCOV_PROFILE := n 9 UBSAN_SANITIZE := n 10 KASAN_SANITIZE := n 11 KCSAN_SANITIZE := n 12 KMSAN_SANITIZE := n 13 14 # 15 # Use minimum architecture level so it is possible to print an error 16 # message if the kernel is started on a machine which is too old 17 # 18 CC_FLAGS_MARCH_MINIMUM := -march=z10 19 20 KBUILD_AFLAGS := $(filter-out $(CC_FLAGS_MARCH),$(KBUILD_AFLAGS_DECOMPRESSOR)) 21 KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_MARCH),$(KBUILD_CFLAGS_DECOMPRESSOR)) 22 KBUILD_AFLAGS += $(CC_FLAGS_MARCH_MINIMUM) 23 KBUILD_CFLAGS += $(CC_FLAGS_MARCH_MINIMUM) 24 25 CFLAGS_sclp_early_core.o += -I$(srctree)/drivers/s390/char 26 27 obj-y := head.o als.o startup.o physmem_info.o ipl_parm.o ipl_report.o vmem.o 28 obj-y += string.o ebcdic.o sclp_early_core.o mem.o ipl_vmparm.o cmdline.o 29 obj-y += version.o pgm_check_info.o ctype.o ipl_data.o relocs.o alternative.o 30 obj-y += uv.o printk.o 31 obj-$(CONFIG_RANDOMIZE_BASE) += kaslr.o 32 obj-y += $(if $(CONFIG_KERNEL_UNCOMPRESSED),,decompressor.o) info.o 33 obj-$(CONFIG_KERNEL_ZSTD) += clz_ctz.o 34 obj-$(CONFIG_KMSAN) += kmsan.o 35 obj-all := $(obj-y) piggy.o syms.o 36 37 targets := bzImage section_cmp.boot.data section_cmp.boot.preserved.data $(obj-y) 38 targets += vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 39 targets += vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo vmlinux.bin.lz4 40 targets += vmlinux.bin.zst info.bin syms.bin vmlinux.syms $(obj-all) 41 targets += relocs.S 42 43 OBJECTS := $(addprefix $(obj)/,$(obj-y)) 44 OBJECTS_ALL := $(addprefix $(obj)/,$(obj-all)) 45 46 clean-files += vmlinux.map 47 48 quiet_cmd_section_cmp = SECTCMP $* 49 define cmd_section_cmp 50 s1=`$(OBJDUMP) -t "$<" | grep "\s$*\s\+" | sort | \ 51 sed -n "/0000000000000000/! s/.*\s$*\s\+//p" | sha256sum`; \ 52 s2=`$(OBJDUMP) -t "$(word 2,$^)" | grep "\s$*\s\+" | sort | \ 53 sed -n "/0000000000000000/! s/.*\s$*\s\+//p" | sha256sum`; \ 54 if [ "$$s1" != "$$s2" ]; then \ 55 echo "error: section $* differs between $< and $(word 2,$^)" >&2; \ 56 exit 1; \ 57 fi; \ 58 touch $@ 59 endef 60 61 $(obj)/bzImage: $(obj)/vmlinux $(obj)/section_cmp.boot.data $(obj)/section_cmp.boot.preserved.data FORCE 62 $(call if_changed,objcopy) 63 64 $(obj)/section_cmp%: vmlinux $(obj)/vmlinux FORCE 65 $(call if_changed,section_cmp) 66 67 LDFLAGS_vmlinux-$(CONFIG_LD_ORPHAN_WARN) := --orphan-handling=$(CONFIG_LD_ORPHAN_WARN_LEVEL) 68 LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y) --oformat $(LD_BFD) -e startup $(if $(CONFIG_VMLINUX_MAP),-Map=$(obj)/vmlinux.map) --build-id=sha1 -T 69 $(obj)/vmlinux: $(obj)/vmlinux.lds $(OBJECTS_ALL) FORCE 70 $(call if_changed,ld) 71 72 LDFLAGS_vmlinux.syms := $(LDFLAGS_vmlinux-y) --oformat $(LD_BFD) -e startup -T 73 $(obj)/vmlinux.syms: $(obj)/vmlinux.lds $(OBJECTS) FORCE 74 $(call if_changed,ld) 75 76 quiet_cmd_dumpsyms = DUMPSYMS $< 77 define cmd_dumpsyms 78 $(NM) -n -S --format=bsd "$<" | sed -nE 's/^0*([0-9a-fA-F]+) 0*([0-9a-fA-F]+) [tT] ([^ ]*)$$/\1 \2 \3/p' | tr '\n' '\0' > "$@" 79 endef 80 81 $(obj)/syms.bin: $(obj)/vmlinux.syms FORCE 82 $(call if_changed,dumpsyms) 83 84 OBJCOPYFLAGS_syms.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.decompressor.syms 85 $(obj)/syms.o: $(obj)/syms.bin FORCE 86 $(call if_changed,objcopy) 87 88 OBJCOPYFLAGS_info.bin := -O binary --only-section=.vmlinux.info --set-section-flags .vmlinux.info=alloc,load 89 $(obj)/info.bin: vmlinux FORCE 90 $(call if_changed,objcopy) 91 92 OBJCOPYFLAGS_info.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.vmlinux.info 93 $(obj)/info.o: $(obj)/info.bin FORCE 94 $(call if_changed,objcopy) 95 96 OBJCOPYFLAGS_vmlinux.bin := -O binary --remove-section=.comment --remove-section=.vmlinux.info -S 97 $(obj)/vmlinux.bin: vmlinux FORCE 98 $(call if_changed,objcopy) 99 100 # relocs.S is created by the vmlinux postlink step. 101 $(obj)/relocs.S: vmlinux 102 @true 103 104 suffix-$(CONFIG_KERNEL_GZIP) := .gz 105 suffix-$(CONFIG_KERNEL_BZIP2) := .bz2 106 suffix-$(CONFIG_KERNEL_LZ4) := .lz4 107 suffix-$(CONFIG_KERNEL_LZMA) := .lzma 108 suffix-$(CONFIG_KERNEL_LZO) := .lzo 109 suffix-$(CONFIG_KERNEL_XZ) := .xz 110 suffix-$(CONFIG_KERNEL_ZSTD) := .zst 111 112 $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE 113 $(call if_changed,gzip) 114 $(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin FORCE 115 $(call if_changed,bzip2_with_size) 116 $(obj)/vmlinux.bin.lz4: $(obj)/vmlinux.bin FORCE 117 $(call if_changed,lz4_with_size) 118 $(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE 119 $(call if_changed,lzma_with_size) 120 $(obj)/vmlinux.bin.lzo: $(obj)/vmlinux.bin FORCE 121 $(call if_changed,lzo_with_size) 122 $(obj)/vmlinux.bin.xz: $(obj)/vmlinux.bin FORCE 123 $(call if_changed,xzkern_with_size) 124 $(obj)/vmlinux.bin.zst: $(obj)/vmlinux.bin FORCE 125 $(call if_changed,zstd22_with_size) 126 127 OBJCOPYFLAGS_piggy.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.vmlinux.bin.compressed 128 $(obj)/piggy.o: $(obj)/vmlinux.bin$(suffix-y) FORCE 129 $(call if_changed,objcopy) 130