1# SPDX-License-Identifier: GPL-2.0
2#
3# linux/arch/s390/boot/compressed/Makefile
4#
5# create a compressed vmlinux image from the original vmlinux
6#
7
8KCOV_INSTRUMENT := n
9GCOV_PROFILE := n
10UBSAN_SANITIZE := n
11KASAN_SANITIZE := n
12
13obj-y	:= $(if $(CONFIG_KERNEL_UNCOMPRESSED),,decompressor.o) piggy.o info.o
14targets	:= vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2
15targets += vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo vmlinux.bin.lz4
16targets += info.bin $(obj-y)
17
18KBUILD_AFLAGS := $(KBUILD_AFLAGS_DECOMPRESSOR)
19KBUILD_CFLAGS := $(KBUILD_CFLAGS_DECOMPRESSOR)
20OBJCOPYFLAGS :=
21
22OBJECTS := $(addprefix $(obj)/,$(obj-y))
23
24LDFLAGS_vmlinux := --oformat $(LD_BFD) -e startup -T
25$(obj)/vmlinux: $(obj)/vmlinux.lds $(objtree)/arch/s390/boot/startup.a $(OBJECTS) FORCE
26	$(call if_changed,ld)
27
28OBJCOPYFLAGS_info.bin := -O binary --only-section=.vmlinux.info --set-section-flags .vmlinux.info=load
29$(obj)/info.bin: vmlinux FORCE
30	$(call if_changed,objcopy)
31
32OBJCOPYFLAGS_info.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.vmlinux.info
33$(obj)/info.o: $(obj)/info.bin FORCE
34	$(call if_changed,objcopy)
35
36OBJCOPYFLAGS_vmlinux.bin := -O binary --remove-section=.comment --remove-section=.vmlinux.info -S
37$(obj)/vmlinux.bin: vmlinux FORCE
38	$(call if_changed,objcopy)
39
40vmlinux.bin.all-y := $(obj)/vmlinux.bin
41
42suffix-$(CONFIG_KERNEL_GZIP)  := .gz
43suffix-$(CONFIG_KERNEL_BZIP2) := .bz2
44suffix-$(CONFIG_KERNEL_LZ4)  := .lz4
45suffix-$(CONFIG_KERNEL_LZMA)  := .lzma
46suffix-$(CONFIG_KERNEL_LZO)  := .lzo
47suffix-$(CONFIG_KERNEL_XZ)  := .xz
48
49$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
50	$(call if_changed,gzip)
51$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
52	$(call if_changed,bzip2)
53$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE
54	$(call if_changed,lz4)
55$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
56	$(call if_changed,lzma)
57$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
58	$(call if_changed,lzo)
59$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE
60	$(call if_changed,xzkern)
61
62OBJCOPYFLAGS_piggy.o := -I binary -O elf64-s390 -B s390:64-bit --rename-section .data=.vmlinux.bin.compressed
63$(obj)/piggy.o: $(obj)/vmlinux.bin$(suffix-y) FORCE
64	$(call if_changed,objcopy)
65
66chkbss := $(filter-out piggy.o info.o, $(obj-y))
67chkbss-target := vmlinux.bin
68include $(srctree)/arch/s390/scripts/Makefile.chkbss
69