1 # SPDX-License-Identifier: GPL-2.0
3 # Makefile for the linux s390-specific parts of the memory manager.
11 KBUILD_AFLAGS := $(KBUILD_AFLAGS_DECOMPRESSOR)
12 KBUILD_CFLAGS := $(KBUILD_CFLAGS_DECOMPRESSOR)
15 # Use minimum architecture for als.c to be able to print an error
16 # message if the kernel is started on a machine which is too old
18 ifndef CONFIG_CC_IS_CLANG
19 CC_FLAGS_MARCH_MINIMUM := -march=z900
21 CC_FLAGS_MARCH_MINIMUM := -march=z10
24 ifneq ($(CC_FLAGS_MARCH),$(CC_FLAGS_MARCH_MINIMUM))
25 AFLAGS_REMOVE_head.o += $(CC_FLAGS_MARCH)
26 AFLAGS_head.o += $(CC_FLAGS_MARCH_MINIMUM)
27 AFLAGS_REMOVE_mem.o += $(CC_FLAGS_MARCH)
28 AFLAGS_mem.o += $(CC_FLAGS_MARCH_MINIMUM)
29 CFLAGS_REMOVE_als.o += $(CC_FLAGS_MARCH)
30 CFLAGS_als.o += $(CC_FLAGS_MARCH_MINIMUM)
31 CFLAGS_REMOVE_sclp_early_core.o += $(CC_FLAGS_MARCH)
32 CFLAGS_sclp_early_core.o += $(CC_FLAGS_MARCH_MINIMUM)
35 CFLAGS_sclp_early_core.o += -I$(srctree)/drivers/s390/char
37 obj-y := head.o als.o startup.o mem_detect.o ipl_parm.o ipl_report.o
38 obj-y += string.o ebcdic.o sclp_early_core.o mem.o ipl_vmparm.o cmdline.o
39 obj-y += version.o pgm_check_info.o ctype.o text_dma.o
40 obj-$(findstring y, $(CONFIG_PROTECTED_VIRTUALIZATION_GUEST) $(CONFIG_PGSTE)) += uv.o
41 obj-$(CONFIG_RELOCATABLE) += machine_kexec_reloc.o
42 obj-$(CONFIG_RANDOMIZE_BASE) += kaslr.o
43 targets := bzImage startup.a section_cmp.boot.data section_cmp.boot.preserved.data $(obj-y)
46 OBJECTS := $(addprefix $(obj)/,$(obj-y))
48 quiet_cmd_section_cmp = SECTCMP $*
49 define cmd_section_cmp
50 s1=`$(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; \
61 $(obj)/bzImage: $(obj)/compressed/vmlinux $(obj)/section_cmp.boot.data $(obj)/section_cmp.boot.preserved.data FORCE
62 $(call if_changed,objcopy)
64 $(obj)/section_cmp%: vmlinux $(obj)/compressed/vmlinux FORCE
65 $(call if_changed,section_cmp)
67 $(obj)/compressed/vmlinux: $(obj)/startup.a FORCE
68 $(Q)$(MAKE) $(build)=$(obj)/compressed $@
70 $(obj)/startup.a: $(OBJECTS) FORCE
74 sh -x $(srctree)/$(obj)/install.sh $(KERNELRELEASE) $(obj)/bzImage \
75 System.map "$(INSTALL_PATH)"