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| author | Mark A. Greer <mgreer@mvista.com> | 2007-05-12 10:53:36 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-05-12 11:32:49 +1000 |
| commit | 916066d5913c37a6b3907eb6695cc9ecaaa4d8ca (patch) | |
| tree | d966b9217ebb21bde240182ae40b3234caf4df64 /arch | |
| parent | a8de5ce9895367191df9b30804a0c67cfcc9f27a (diff) | |
[POWERPC] Add Makefile rules to wrap dts file in zImage
Add 'zImage.dts' and 'zImage.dts_initrd' build rules that automatically
compile and wrap a dts file from arch/powerpc/boot/dts into the zImage file.
The resulting zImage will be arch/powerpc/boot/zImage.dts.<platform> and
arch/powerpc/boot/zImage.dts_initrd.<platform>, respectively.
Having separate rules allows the user to choose whether to include a device
tree--and which device tree--at build time. This is useful when one Makefile
target builds a zImage that runs on several platforms except for differing
device trees. By just setting CONFIG_DEVICE_TREE and running "make zImage.dts"
the exact zImage you want is built without Makefile bloat or manually running
the wrapper script.
The dts file is expected to be arch/powerpc/boot/dts/$(CONFIG_DEVICE_TREE)
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/Makefile | 2 | ||||
| -rw-r--r-- | arch/powerpc/boot/Makefile | 25 |
2 files changed, 25 insertions, 2 deletions
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 81a531d84ff..d6014a67694 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -148,7 +148,7 @@ all: $(KBUILD_IMAGE) CPPFLAGS_vmlinux.lds := -Upowerpc -BOOT_TARGETS = zImage zImage.initrd uImage +BOOT_TARGETS = zImage zImage.initrd zImage.dts zImage.dts_initrd uImage PHONY += $(BOOT_TARGETS) diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index 5c384aad118..01b683987e7 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile @@ -154,9 +154,27 @@ targets += $(image-y) $(initrd-y) $(addprefix $(obj)/, $(initrd-y)): $(obj)/ramdisk.image.gz +dts- := $(patsubst zImage%, zImage.dts%, $(image-n) $(image-)) +dts-y := $(patsubst zImage%, zImage.dts%, $(image-y)) +dts-y := $(filter-out $(image-y), $(dts-y)) +targets += $(image-y) $(dts-y) + +dts_initrd- := $(patsubst zImage%, zImage.dts_initrd%, $(image-n) $(image-)) +dts_initrd-y := $(patsubst zImage%, zImage.dts_initrd%, $(image-y)) +dts_initrd-y := $(filter-out $(image-y), $(dts_initrd-y)) +targets += $(image-y) $(dts_initrd-y) + +$(addprefix $(obj)/, $(dts_initrd-y)): $(obj)/ramdisk.image.gz + # Don't put the ramdisk on the pattern rule; when its missing make will try # the pattern rule with less dependencies that also matches (even with the # hard dependency listed). +$(obj)/zImage.dts_initrd.%: vmlinux $(wrapperbits) $(dts) $(obj)/ramdisk.image.gz + $(call if_changed,wrap,$*,$(dts),,$(obj)/ramdisk.image.gz) + +$(obj)/zImage.dts.%: vmlinux $(wrapperbits) $(dts) + $(call if_changed,wrap,$*,$(dts)) + $(obj)/zImage.initrd.%: vmlinux $(wrapperbits) $(call if_changed,wrap,$*,,,$(obj)/ramdisk.image.gz) @@ -195,13 +213,18 @@ $(obj)/zImage: $(addprefix $(obj)/, $(image-y)) @rm -f $@; ln $< $@ $(obj)/zImage.initrd: $(addprefix $(obj)/, $(initrd-y)) @rm -f $@; ln $< $@ +$(obj)/zImage.dts: $(addprefix $(obj)/, $(dts-y)) + @rm -f $@; ln $< $@ +$(obj)/zImage.dts_initrd: $(addprefix $(obj)/, $(dts_initrd-y)) + @rm -f $@; ln $< $@ + install: $(CONFIGURE) $(addprefix $(obj)/, $(image-y)) sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" $< # anything not in $(targets) clean-files += $(image-) $(initrd-) zImage zImage.initrd cuImage.* \ - treeImage.* + treeImage.* zImage.dts zImage.dts_initrd # clean up files cached by wrapper clean-kernel := vmlinux.strip vmlinux.bin |