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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2010-02-26 16:37:53 -0500 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-02-26 16:37:33 -0500 |
| commit | 1844c9bc0b2fed3023551c1affe033ab38e90b9a (patch) | |
| tree | b9aca066ec58a0b211a4931032b74093fdb6ff49 /arch/s390/boot/compressed/Makefile | |
| parent | 73bfa5f2f71efcdcaad8d18cbed96b9d7ed86948 (diff) | |
[S390] add support for compressed kernels
Add the "bzImage" compile target and the necessary code to generate
compressed kernel images. The old style uncompressed "image" target
is preserved, a simple make will build them both.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/boot/compressed/Makefile')
| -rw-r--r-- | arch/s390/boot/compressed/Makefile | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/arch/s390/boot/compressed/Makefile b/arch/s390/boot/compressed/Makefile new file mode 100644 index 000000000000..6e4a67ad07e1 --- /dev/null +++ b/arch/s390/boot/compressed/Makefile | |||
| @@ -0,0 +1,60 @@ | |||
| 1 | # | ||
| 2 | # linux/arch/s390/boot/compressed/Makefile | ||
| 3 | # | ||
| 4 | # create a compressed vmlinux image from the original vmlinux | ||
| 5 | # | ||
| 6 | |||
| 7 | BITS := $(if $(CONFIG_64BIT),64,31) | ||
| 8 | |||
| 9 | targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 \ | ||
| 10 | vmlinux.bin.lzma misc.o piggy.o sizes.h head$(BITS).o | ||
| 11 | |||
| 12 | KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2 | ||
| 13 | KBUILD_CFLAGS += $(cflags-y) | ||
| 14 | KBUILD_CFLAGS += $(call cc-option,-mpacked-stack) | ||
| 15 | KBUILD_CFLAGS += $(call cc-option,-ffreestanding) | ||
| 16 | |||
| 17 | GCOV_PROFILE := n | ||
| 18 | |||
| 19 | OBJECTS := $(addprefix $(objtree)/arch/s390/kernel/, head.o sclp.o ebcdic.o) | ||
| 20 | OBJECTS += $(obj)/head$(BITS).o $(obj)/misc.o $(obj)/piggy.o | ||
| 21 | |||
| 22 | LDFLAGS_vmlinux := --oformat $(LD_BFD) -e startup -T | ||
| 23 | $(obj)/vmlinux: $(obj)/vmlinux.lds $(OBJECTS) | ||
| 24 | $(call if_changed,ld) | ||
| 25 | @: | ||
| 26 | |||
| 27 | sed-sizes := -e 's/^\([0-9a-fA-F]*\) . \(__bss_start\|_end\)$$/\#define SZ\2 0x\1/p' | ||
| 28 | |||
| 29 | quiet_cmd_sizes = GEN $@ | ||
| 30 | cmd_sizes = $(NM) $< | sed -n $(sed-sizes) > $@ | ||
| 31 | |||
| 32 | $(obj)/sizes.h: vmlinux | ||
| 33 | $(call if_changed,sizes) | ||
| 34 | |||
| 35 | AFLAGS_head$(BITS).o += -I$(obj) | ||
| 36 | $(obj)/head$(BITS).o: $(obj)/sizes.h | ||
| 37 | |||
| 38 | CFLAGS_misc.o += -I$(obj) | ||
| 39 | $(obj)/misc.o: $(obj)/sizes.h | ||
| 40 | |||
| 41 | OBJCOPYFLAGS_vmlinux.bin := -R .comment -S | ||
| 42 | $(obj)/vmlinux.bin: vmlinux | ||
| 43 | $(call if_changed,objcopy) | ||
| 44 | |||
| 45 | vmlinux.bin.all-y := $(obj)/vmlinux.bin | ||
| 46 | |||
| 47 | suffix-$(CONFIG_KERNEL_GZIP) := gz | ||
| 48 | suffix-$(CONFIG_KERNEL_BZIP2) := bz2 | ||
| 49 | suffix-$(CONFIG_KERNEL_LZMA) := lzma | ||
| 50 | |||
| 51 | $(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) | ||
| 52 | $(call if_changed,gzip) | ||
| 53 | $(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) | ||
| 54 | $(call if_changed,bzip2) | ||
| 55 | $(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) | ||
| 56 | $(call if_changed,lzma) | ||
| 57 | |||
| 58 | LDFLAGS_piggy.o := -r --format binary --oformat $(LD_BFD) -T | ||
| 59 | $(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix-y) | ||
| 60 | $(call if_changed,ld) | ||