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 41obj-$(findstring y, $(CONFIG_PROTECTED_VIRTUALIZATION_GUEST) $(CONFIG_PGSTE)) += uv.o 42obj-$(CONFIG_RELOCATABLE) += machine_kexec_reloc.o 43obj-$(CONFIG_RANDOMIZE_BASE) += kaslr.o 44targets := bzImage startup.a section_cmp.boot.data section_cmp.boot.preserved.data $(obj-y) 45subdir- := compressed 46 47OBJECTS := $(addprefix $(obj)/,$(obj-y)) 48 49quiet_cmd_section_cmp = SECTCMP $* 50define cmd_section_cmp 51 s1=`$(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 $@ 60endef 61 62$(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) 73