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authorMark A. Greer <mgreer@mvista.com>2007-06-01 05:55:35 +1000
committerPaul Mackerras <paulus@samba.org>2007-06-25 17:00:09 +1000
commita00cec48ccda0f2b550ad4082d6e95c7cc232925 (patch)
tree6f176b17f61cc8b45d57d23609cf422103e43c14 /arch/powerpc/boot
parent941b7adf347dc3e6e2bf87b2af1ef8a42b617a63 (diff)
[POWERPC] When appropriate, wrap device tree with zImage
There are 2 config options that indicate whether the platform being built has a device tree source file associated with it. Namely, CONFIG_WANT_DEVICE_TREE and CONFIG_DEVICE_TREE. When CONFIG_WANT_DEVICE_TREE is 'y' and CONFIG_DEVICE_TREE isn't an empty string, automatically wrap the specified device tree with the zImage being built. To achieve this, the 'dts' variable will only be set when the conditions above are true. The changes to the zImage.initrd.% and zImage.% rules cause the device tree to be wrapped when 'dts' is set; otherwise, they will work as they previosly did (i.e., build a zImage with no device tree). Signed-off-by: Mark A. Greer <mgreer@mvista.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/boot')
-rw-r--r--arch/powerpc/boot/Makefile22
1 files changed, 14 insertions, 8 deletions
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 75e1e5681ad..29361d76ef1 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -157,14 +157,24 @@ targets += $(image-y) $(initrd-y)
$(addprefix $(obj)/, $(initrd-y)): $(obj)/ramdisk.image.gz
+# If CONFIG_WANT_DEVICE_TREE is set and CONFIG_DEVICE_TREE isn't an
+# empty string, define 'dts' to be path to the dts
+# CONFIG_DEVICE_TREE will have "" around it, make sure to strip them
+ifeq ($(CONFIG_WANT_DEVICE_TREE),y)
+ifneq ($(CONFIG_DEVICE_TREE),"")
+dts = $(if $(shell echo $(CONFIG_DEVICE_TREE) | grep '^/'),\
+ ,$(srctree)/$(src)/dts/)$(CONFIG_DEVICE_TREE:"%"=%)
+endif
+endif
+
# 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.initrd.%: vmlinux $(wrapperbits)
- $(call if_changed,wrap,$*,,,$(obj)/ramdisk.image.gz)
+$(obj)/zImage.initrd.%: vmlinux $(wrapperbits) $(dts)
+ $(call if_changed,wrap,$*,$(dts),,$(obj)/ramdisk.image.gz)
-$(obj)/zImage.%: vmlinux $(wrapperbits)
- $(call if_changed,wrap,$*)
+$(obj)/zImage.%: vmlinux $(wrapperbits) $(dts)
+ $(call if_changed,wrap,$*,$(dts))
$(obj)/zImage.iseries: vmlinux
$(STRIP) -s -R .comment $< -o $@
@@ -184,10 +194,6 @@ $(obj)/zImage.initrd.holly-elf: vmlinux $(wrapperbits) $(obj)/ramdisk.image.gz
$(obj)/uImage: vmlinux $(wrapperbits)
$(call if_changed,wrap,uboot)
-# CONFIG_DEVICE_TREE will have "" around it, make sure to strip them
-dts = $(if $(shell echo $(CONFIG_DEVICE_TREE) | grep '^/'),\
- ,$(srctree)/$(src)/dts/)$(CONFIG_DEVICE_TREE:"%"=%)
-
$(obj)/cuImage.%: vmlinux $(dts) $(wrapperbits)
$(call if_changed,wrap,cuboot-$*,$(dts))