1#
2# linux/arch/s390/boot/compressed/Makefile
3#
4# create a compressed vmlinux image from the original vmlinux
5#
6
7BITS := $(if $(CONFIG_64BIT),64,31)
8
9targets	:= vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 \
10	   vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo misc.o piggy.o \
11	   sizes.h head$(BITS).o
12
13KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
14KBUILD_CFLAGS += $(cflags-y)
15KBUILD_CFLAGS += $(call cc-option,-mpacked-stack)
16KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
17
18GCOV_PROFILE := n
19
20OBJECTS := $(addprefix $(objtree)/arch/s390/kernel/, head.o sclp.o ebcdic.o)
21OBJECTS += $(obj)/head$(BITS).o $(obj)/misc.o $(obj)/piggy.o
22
23LDFLAGS_vmlinux := --oformat $(LD_BFD) -e startup -T
24$(obj)/vmlinux: $(obj)/vmlinux.lds $(OBJECTS)
25	$(call if_changed,ld)
26	@:
27
28sed-sizes := -e 's/^\([0-9a-fA-F]*\) . \(__bss_start\|_end\)$$/\#define SZ\2 0x\1/p'
29
30quiet_cmd_sizes = GEN $@
31      cmd_sizes = $(NM) $< | sed -n $(sed-sizes) > $@
32
33$(obj)/sizes.h: vmlinux
34	$(call if_changed,sizes)
35
36AFLAGS_head$(BITS).o += -I$(obj)
37$(obj)/head$(BITS).o: $(obj)/sizes.h
38
39CFLAGS_misc.o += -I$(obj)
40$(obj)/misc.o: $(obj)/sizes.h
41
42OBJCOPYFLAGS_vmlinux.bin :=  -R .comment -S
43$(obj)/vmlinux.bin: vmlinux
44	$(call if_changed,objcopy)
45
46vmlinux.bin.all-y := $(obj)/vmlinux.bin
47
48suffix-$(CONFIG_KERNEL_GZIP)  := gz
49suffix-$(CONFIG_KERNEL_BZIP2) := bz2
50suffix-$(CONFIG_KERNEL_LZMA)  := lzma
51suffix-$(CONFIG_KERNEL_LZO)  := lzo
52suffix-$(CONFIG_KERNEL_XZ)  := xz
53
54$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y)
55	$(call if_changed,gzip)
56$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y)
57	$(call if_changed,bzip2)
58$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y)
59	$(call if_changed,lzma)
60$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y)
61	$(call if_changed,lzo)
62$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y)
63	$(call if_changed,xzkern)
64
65LDFLAGS_piggy.o := -r --format binary --oformat $(LD_BFD) -T
66$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix-y)
67	$(call if_changed,ld)
68