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 9 10KBUILD_AFLAGS := $(KBUILD_AFLAGS_DECOMPRESSOR) 11KBUILD_CFLAGS := $(KBUILD_CFLAGS_DECOMPRESSOR) 12 13# 14# Use -march=z900 for als.c to be able to print an error 15# message if the kernel is started on a machine which is too old 16# 17ifneq ($(CC_FLAGS_MARCH),-march=z900) 18AFLAGS_REMOVE_head.o += $(CC_FLAGS_MARCH) 19AFLAGS_head.o += -march=z900 20AFLAGS_REMOVE_mem.o += $(CC_FLAGS_MARCH) 21AFLAGS_mem.o += -march=z900 22CFLAGS_REMOVE_als.o += $(CC_FLAGS_MARCH) 23CFLAGS_als.o += -march=z900 24CFLAGS_REMOVE_sclp_early_core.o += $(CC_FLAGS_MARCH) 25CFLAGS_sclp_early_core.o += -march=z900 26endif 27 28CFLAGS_sclp_early_core.o += -I$(srctree)/drivers/s390/char 29 30obj-y := head.o als.o ebcdic.o sclp_early_core.o mem.o 31targets := bzImage startup.a $(obj-y) 32subdir- := compressed 33 34OBJECTS := $(addprefix $(obj)/,$(obj-y)) 35 36$(obj)/bzImage: $(obj)/compressed/vmlinux FORCE 37 $(call if_changed,objcopy) 38 39$(obj)/compressed/vmlinux: $(obj)/startup.a FORCE 40 $(Q)$(MAKE) $(build)=$(obj)/compressed $@ 41 42quiet_cmd_ar = AR $@ 43 cmd_ar = rm -f $@; $(AR) rcsTP$(KBUILD_ARFLAGS) $@ $(filter $(OBJECTS), $^) 44 45$(obj)/startup.a: $(OBJECTS) FORCE 46 $(call if_changed,ar) 47 48install: $(CONFIGURE) $(obj)/bzImage 49 sh -x $(srctree)/$(obj)/install.sh $(KERNELRELEASE) $(obj)/bzImage \ 50 System.map "$(INSTALL_PATH)" 51 52chkbss := $(OBJECTS) 53chkbss-target := $(obj)/startup.a 54include $(srctree)/arch/s390/scripts/Makefile.chkbss 55