1# SPDX-License-Identifier: GPL-2.0 2# 3# Makefile for the linux s390-specific parts of the memory manager. 4# 5 6KCOV_INSTRUMENT := n 7GCOV_PROFILE := n 8UBSAN_SANITIZE := n 9KASAN_SANITIZE := n 10KCSAN_SANITIZE := n 11 12KBUILD_AFLAGS := $(KBUILD_AFLAGS_DECOMPRESSOR) 13KBUILD_CFLAGS := $(KBUILD_CFLAGS_DECOMPRESSOR) 14 15# 16# Use minimum architecture for als.c to be able to print an error 17# message if the kernel is started on a machine which is too old 18# 19ifndef CONFIG_CC_IS_CLANG 20CC_FLAGS_MARCH_MINIMUM := -march=z900 21else 22CC_FLAGS_MARCH_MINIMUM := -march=z10 23endif 24 25ifneq ($(CC_FLAGS_MARCH),$(CC_FLAGS_MARCH_MINIMUM)) 26AFLAGS_REMOVE_head.o += $(CC_FLAGS_MARCH) 27AFLAGS_head.o += $(CC_FLAGS_MARCH_MINIMUM) 28AFLAGS_REMOVE_mem.o += $(CC_FLAGS_MARCH) 29AFLAGS_mem.o += $(CC_FLAGS_MARCH_MINIMUM) 30CFLAGS_REMOVE_als.o += $(CC_FLAGS_MARCH) 31CFLAGS_als.o += $(CC_FLAGS_MARCH_MINIMUM) 32CFLAGS_REMOVE_sclp_early_core.o += $(CC_FLAGS_MARCH) 33CFLAGS_sclp_early_core.o += $(CC_FLAGS_MARCH_MINIMUM) 34endif 35 36CFLAGS_sclp_early_core.o += -I$(srctree)/drivers/s390/char 37 38obj-y := head.o als.o startup.o mem_detect.o ipl_parm.o ipl_report.o 39obj-y += string.o ebcdic.o sclp_early_core.o mem.o ipl_vmparm.o cmdline.o 40obj-y += version.o pgm_check_info.o ctype.o ipl_data.o machine_kexec_reloc.o 41obj-$(findstring y, $(CONFIG_PROTECTED_VIRTUALIZATION_GUEST) $(CONFIG_PGSTE)) += uv.o 42obj-$(CONFIG_RANDOMIZE_BASE) += kaslr.o 43obj-y += $(if $(CONFIG_KERNEL_UNCOMPRESSED),,decompressor.o) info.o 44obj-$(CONFIG_KERNEL_ZSTD) += clz_ctz.o 45obj-all := $(obj-y) piggy.o syms.o 46 47targets := bzImage section_cmp.boot.data section_cmp.boot.preserved.data $(obj-y) 48targets += vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 49targets += vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo vmlinux.bin.lz4 50targets += vmlinux.bin.zst info.bin syms.bin vmlinux.syms $(obj-all) 51 52OBJECTS := $(addprefix $(obj)/,$(obj-y)) 53OBJECTS_ALL := $(addprefix $(obj)/,$(obj-all)) 54 55quiet_cmd_section_cmp = SECTCMP $* 56define cmd_section_cmp 57 s1=`$(OBJDUMP) -t -j "$*" "$<" | sort | \ 58 sed -n "/0000000000000000/! s/.*\s$*\s\+//p" | sha256sum`; \ 59 s2=`$(OBJDUMP) -t -j "$*" "$(word 2,$^)" | sort | \ 60 sed -n "/0000000000000000/! s/.*\s$*\s\+//p" | sha256sum`; \ 61 if [ "$$s1" != "$$s2" ]; then \ 62 echo "error: section $* differs between $< and $(word 2,$^)" >&2; \ 63 exit 1; \ 64 fi; \ 65 touch $@ 66endef 67 68$(obj)/bzImage: $(obj)/vmlinux $(obj)/section_cmp.boot.data $(obj)/section_cmp.boot.preserved.data FORCE 69 $(call if_changed,objcopy) 70 71$(obj)/section_cmp%: vmlinux $(obj)/vmlinux FORCE 72 $(call if_changed,section_cmp) 73 74LDFLAGS_vmlinux := --oformat $(LD_BFD) -e startup --build-id=sha1 -T 75$(obj)/vmlinux: $(obj)/vmlinux.lds $(OBJECTS_ALL) FORCE 76 $(call if_changed,ld) 77 78LDFLAGS_vmlinux.syms := --oformat $(LD_BFD) -e startup -T 79$(obj)/vmlinux.syms: $(obj)/vmlinux.lds $(OBJECTS) FORCE 80 $(call if_changed,ld) 81 82quiet_cmd_dumpsyms = DUMPSYMS $< 83define cmd_dumpsyms 84 $(NM) -n -S --format=bsd "$<" | sed -nE 's/^0*([0-9a-fA-F]+) 0*([0-9a-fA-F]+) [tT] ([^ ]*)$$/\1 \2 \3/p' | tr '\n' '\0' > "$@" 85endef 86 87$(obj)/syms.bin: $(obj)/vmlinux.syms FORCE 88 $(call if_changed,dumpsyms) 89 90OBJCOPYFLAGS_syms.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.decompressor.syms 91$(obj)/syms.o: $(obj)/syms.bin FORCE 92 $(call if_changed,objcopy) 93 94OBJCOPYFLAGS_info.bin := -O binary --only-section=.vmlinux.info --set-section-flags .vmlinux.info=load 95$(obj)/info.bin: vmlinux FORCE 96 $(call if_changed,objcopy) 97 98OBJCOPYFLAGS_info.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.vmlinux.info 99$(obj)/info.o: $(obj)/info.bin FORCE 100 $(call if_changed,objcopy) 101 102OBJCOPYFLAGS_vmlinux.bin := -O binary --remove-section=.comment --remove-section=.vmlinux.info -S 103$(obj)/vmlinux.bin: vmlinux FORCE 104 $(call if_changed,objcopy) 105 106suffix-$(CONFIG_KERNEL_GZIP) := .gz 107suffix-$(CONFIG_KERNEL_BZIP2) := .bz2 108suffix-$(CONFIG_KERNEL_LZ4) := .lz4 109suffix-$(CONFIG_KERNEL_LZMA) := .lzma 110suffix-$(CONFIG_KERNEL_LZO) := .lzo 111suffix-$(CONFIG_KERNEL_XZ) := .xz 112suffix-$(CONFIG_KERNEL_ZSTD) := .zst 113 114$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE 115 $(call if_changed,gzip) 116$(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin FORCE 117 $(call if_changed,bzip2_with_size) 118$(obj)/vmlinux.bin.lz4: $(obj)/vmlinux.bin FORCE 119 $(call if_changed,lz4_with_size) 120$(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE 121 $(call if_changed,lzma_with_size) 122$(obj)/vmlinux.bin.lzo: $(obj)/vmlinux.bin FORCE 123 $(call if_changed,lzo_with_size) 124$(obj)/vmlinux.bin.xz: $(obj)/vmlinux.bin FORCE 125 $(call if_changed,xzkern_with_size) 126$(obj)/vmlinux.bin.zst: $(obj)/vmlinux.bin FORCE 127 $(call if_changed,zstd22_with_size) 128 129OBJCOPYFLAGS_piggy.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.vmlinux.bin.compressed 130$(obj)/piggy.o: $(obj)/vmlinux.bin$(suffix-y) FORCE 131 $(call if_changed,objcopy) 132