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 := $(KBUILD_CFLAGS_DECOMPRESSOR) 13 14# 15# Use minimum architecture for als.c to be able to print an error 16# message if the kernel is started on a machine which is too old 17# 18ifndef CONFIG_CC_IS_CLANG 19CC_FLAGS_MARCH_MINIMUM := -march=z900 20else 21CC_FLAGS_MARCH_MINIMUM := -march=z10 22endif 23 24ifneq ($(CC_FLAGS_MARCH),$(CC_FLAGS_MARCH_MINIMUM)) 25AFLAGS_REMOVE_head.o += $(CC_FLAGS_MARCH) 26AFLAGS_head.o += $(CC_FLAGS_MARCH_MINIMUM) 27AFLAGS_REMOVE_mem.o += $(CC_FLAGS_MARCH) 28AFLAGS_mem.o += $(CC_FLAGS_MARCH_MINIMUM) 29CFLAGS_REMOVE_als.o += $(CC_FLAGS_MARCH) 30CFLAGS_als.o += $(CC_FLAGS_MARCH_MINIMUM) 31CFLAGS_REMOVE_sclp_early_core.o += $(CC_FLAGS_MARCH) 32CFLAGS_sclp_early_core.o += $(CC_FLAGS_MARCH_MINIMUM) 33endif 34 35CFLAGS_sclp_early_core.o += -I$(srctree)/drivers/s390/char 36 37obj-y := head.o als.o startup.o mem_detect.o ipl_parm.o ipl_report.o 38obj-y += string.o ebcdic.o sclp_early_core.o mem.o ipl_vmparm.o cmdline.o 39obj-y += ctype.o text_dma.o 40obj-$(CONFIG_PROTECTED_VIRTUALIZATION_GUEST) += uv.o 41obj-$(CONFIG_RELOCATABLE) += machine_kexec_reloc.o 42obj-$(CONFIG_RANDOMIZE_BASE) += kaslr.o 43targets := bzImage startup.a section_cmp.boot.data section_cmp.boot.preserved.data $(obj-y) 44subdir- := compressed 45 46OBJECTS := $(addprefix $(obj)/,$(obj-y)) 47 48quiet_cmd_section_cmp = SECTCMP $* 49define cmd_section_cmp 50 s1=`$(OBJDUMP) -t -j "$*" "$<" | sort | \ 51 sed -n "/0000000000000000/! s/.*\s$*\s\+//p" | sha256sum`; \ 52 s2=`$(OBJDUMP) -t -j "$*" "$(word 2,$^)" | sort | \ 53 sed -n "/0000000000000000/! s/.*\s$*\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 $@ 59endef 60 61OBJCOPYFLAGS_bzImage := --pad-to $$(readelf -s $(obj)/compressed/vmlinux | awk '/\<_end\>/ {print or(strtonum("0x"$$2),4095)+1}') 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 74install: $(CONFIGURE) $(obj)/bzImage 75 sh -x $(srctree)/$(obj)/install.sh $(KERNELRELEASE) $(obj)/bzImage \ 76 System.map "$(INSTALL_PATH)" 77 78chkbss := $(obj-y) 79chkbss-target := startup.a 80include $(srctree)/arch/s390/scripts/Makefile.chkbss 81