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 ebcdic.o sclp_early_core.o mem.o 32targets := bzImage startup.a $(obj-y) 33subdir- := compressed 34 35OBJECTS := $(addprefix $(obj)/,$(obj-y)) 36 37$(obj)/bzImage: $(obj)/compressed/vmlinux FORCE 38 $(call if_changed,objcopy) 39 40$(obj)/compressed/vmlinux: $(obj)/startup.a FORCE 41 $(Q)$(MAKE) $(build)=$(obj)/compressed $@ 42 43quiet_cmd_ar = AR $@ 44 cmd_ar = rm -f $@; $(AR) rcsTP$(KBUILD_ARFLAGS) $@ $(filter $(OBJECTS), $^) 45 46$(obj)/startup.a: $(OBJECTS) FORCE 47 $(call if_changed,ar) 48 49install: 50 sh -x $(srctree)/$(obj)/install.sh $(KERNELRELEASE) $(obj)/bzImage \ 51 System.map "$(INSTALL_PATH)" 52 53chkbss := $(OBJECTS) 54chkbss-target := $(obj)/startup.a 55include $(srctree)/arch/s390/scripts/Makefile.chkbss 56