73 lines
2.2 KiB
Makefile
73 lines
2.2 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for the linux s390-specific parts of the memory manager.
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#
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KCOV_INSTRUMENT := n
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GCOV_PROFILE := n
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UBSAN_SANITIZE := n
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KASAN_SANITIZE := n
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KBUILD_AFLAGS := $(KBUILD_AFLAGS_DECOMPRESSOR)
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KBUILD_CFLAGS := $(KBUILD_CFLAGS_DECOMPRESSOR)
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#
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# Use -march=z900 for als.c to be able to print an error
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# message if the kernel is started on a machine which is too old
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#
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ifneq ($(CC_FLAGS_MARCH),-march=z900)
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AFLAGS_REMOVE_head.o += $(CC_FLAGS_MARCH)
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AFLAGS_head.o += -march=z900
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AFLAGS_REMOVE_mem.o += $(CC_FLAGS_MARCH)
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AFLAGS_mem.o += -march=z900
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CFLAGS_REMOVE_als.o += $(CC_FLAGS_MARCH)
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CFLAGS_als.o += -march=z900
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CFLAGS_REMOVE_sclp_early_core.o += $(CC_FLAGS_MARCH)
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CFLAGS_sclp_early_core.o += -march=z900
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endif
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CFLAGS_sclp_early_core.o += -I$(srctree)/drivers/s390/char
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obj-y := head.o als.o startup.o mem_detect.o ipl_parm.o string.o ebcdic.o
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obj-y += sclp_early_core.o mem.o ipl_vmparm.o cmdline.o ctype.o
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targets := bzImage startup.a section_cmp.boot.data $(obj-y)
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subdir- := compressed
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OBJECTS := $(addprefix $(obj)/,$(obj-y))
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quiet_cmd_section_cmp = SECTCMP $*
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define cmd_section_cmp
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s1=`$(OBJDUMP) -t -j "$*" "$<" | sort | \
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sed -n "/0000000000000000/! s/.*\s$*\s\+//p" | sha256sum`; \
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s2=`$(OBJDUMP) -t -j "$*" "$(word 2,$^)" | sort | \
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sed -n "/0000000000000000/! s/.*\s$*\s\+//p" | sha256sum`; \
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if [ "$$s1" != "$$s2" ]; then \
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echo "error: section $* differs between $< and $(word 2,$^)" >&2; \
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exit 1; \
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fi; \
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touch $@
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endef
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$(obj)/bzImage: $(obj)/compressed/vmlinux $(obj)/section_cmp.boot.data FORCE
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$(call if_changed,objcopy)
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$(obj)/section_cmp%: vmlinux $(obj)/compressed/vmlinux FORCE
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$(call if_changed,section_cmp)
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$(obj)/compressed/vmlinux: $(obj)/startup.a FORCE
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$(Q)$(MAKE) $(build)=$(obj)/compressed $@
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quiet_cmd_ar = AR $@
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cmd_ar = rm -f $@; $(AR) rcsTP$(KBUILD_ARFLAGS) $@ $(filter $(OBJECTS), $^)
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$(obj)/startup.a: $(OBJECTS) FORCE
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$(call if_changed,ar)
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install: $(CONFIGURE) $(obj)/bzImage
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sh -x $(srctree)/$(obj)/install.sh $(KERNELRELEASE) $(obj)/bzImage \
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System.map "$(INSTALL_PATH)"
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chkbss := $(OBJECTS)
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chkbss-target := $(obj)/startup.a
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include $(srctree)/arch/s390/scripts/Makefile.chkbss
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