From 916066d5913c37a6b3907eb6695cc9ecaaa4d8ca Mon Sep 17 00:00:00 2001 From: "Mark A. Greer" Date: Sat, 12 May 2007 10:53:36 +1000 Subject: [PATCH] [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. and arch/powerpc/boot/zImage.dts_initrd., 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 Signed-off-by: Paul Mackerras --- arch/powerpc/Makefile | 2 +- arch/powerpc/boot/Makefile | 25 ++++++++++++++++++++++++- 2 files changed, 25 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 81a531d84ff9..d6014a67694b 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 5c384aad1184..01b683987e7d 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