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 10 11KBUILD_AFLAGS := $(KBUILD_AFLAGS_DECOMPRESSOR) 12KBUILD_CFLAGS := $(KBUILD_CFLAGS_DECOMPRESSOR) 13 14# 15# Use -march=z900 for als.c to be able to print an error 16# message if the kernel is started on a machine which is too old 17# 18ifneq ($(CC_FLAGS_MARCH),-march=z900) 19AFLAGS_REMOVE_head.o += $(CC_FLAGS_MARCH) 20AFLAGS_head.o += -march=z900 21AFLAGS_REMOVE_mem.o += $(CC_FLAGS_MARCH) 22AFLAGS_mem.o += -march=z900 23CFLAGS_REMOVE_als.o += $(CC_FLAGS_MARCH) 24CFLAGS_als.o += -march=z900 25CFLAGS_REMOVE_sclp_early_core.o += $(CC_FLAGS_MARCH) 26CFLAGS_sclp_early_core.o += -march=z900 27endif 28 29CFLAGS_sclp_early_core.o += -I$(srctree)/drivers/s390/char 30 31obj-y := head.o als.o startup.o mem_detect.o ipl_parm.o ipl_report.o 32obj-y += string.o ebcdic.o sclp_early_core.o mem.o ipl_vmparm.o cmdline.o 33obj-y += ctype.o 34obj-$(CONFIG_PROTECTED_VIRTUALIZATION_GUEST) += uv.o 35obj-$(CONFIG_RELOCATABLE) += machine_kexec_reloc.o 36targets := bzImage startup.a section_cmp.boot.data section_cmp.boot.preserved.data $(obj-y) 37subdir- := compressed 38 39OBJECTS := $(addprefix $(obj)/,$(obj-y)) 40 41quiet_cmd_section_cmp = SECTCMP $* 42define cmd_section_cmp 43 s1=`$(OBJDUMP) -t -j "$*" "$<" | sort | \ 44 sed -n "/0000000000000000/! s/.*\s$*\s\+//p" | sha256sum`; \ 45 s2=`$(OBJDUMP) -t -j "$*" "$(word 2,$^)" | sort | \ 46 sed -n "/0000000000000000/! s/.*\s$*\s\+//p" | sha256sum`; \ 47 if [ "$$s1" != "$$s2" ]; then \ 48 echo "error: section $* differs between $< and $(word 2,$^)" >&2; \ 49 exit 1; \ 50 fi; \ 51 touch $@ 52endef 53 54OBJCOPYFLAGS_bzImage := --pad-to $$(readelf -s $(obj)/compressed/vmlinux | awk '/\<_end\>/ {print or(strtonum("0x"$$2),4095)+1}') 55$(obj)/bzImage: $(obj)/compressed/vmlinux $(obj)/section_cmp.boot.data $(obj)/section_cmp.boot.preserved.data FORCE 56 $(call if_changed,objcopy) 57 58$(obj)/section_cmp%: vmlinux $(obj)/compressed/vmlinux FORCE 59 $(call if_changed,section_cmp) 60 61$(obj)/compressed/vmlinux: $(obj)/startup.a FORCE 62 $(Q)$(MAKE) $(build)=$(obj)/compressed $@ 63 64$(obj)/startup.a: $(OBJECTS) FORCE 65 $(call if_changed,ar) 66 67install: $(CONFIGURE) $(obj)/bzImage 68 sh -x $(srctree)/$(obj)/install.sh $(KERNELRELEASE) $(obj)/bzImage \ 69 System.map "$(INSTALL_PATH)" 70 71chkbss := $(obj-y) 72chkbss-target := startup.a 73include $(srctree)/arch/s390/scripts/Makefile.chkbss 74