[PATCH] [POWERPC] add target for building .dtb files

[Grant Likely <grant.likely@secretlab.ca>]

From: Grant Likely <grant.likely@secretlab.ca>

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

---

Josh, is this what your were looking for?

Cheers,
g.
---

 arch/powerpc/Makefile      |    2 +-
 arch/powerpc/boot/Makefile |    4 ++++
 2 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index ab5cfe8..dd80825 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -164,7 +164,7 @@ boot := arch/$(ARCH)/boot
 $(BOOT_TARGETS): vmlinux
 	$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
 
-bootwrapper_install:
+bootwrapper_install %.dtb:
 	$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
 
 define archhelp
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index d57a67d..fb29f10 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -311,6 +311,10 @@ $(obj)/treeImage.initrd.%: vmlinux $(dtstree)/%.dts $(wrapperbits)
 $(obj)/treeImage.%: vmlinux $(dtstree)/%.dts $(wrapperbits)
 	$(call if_changed,wrap,treeboot-$*,$(dtstree)/$*.dts)
 
+# Rule to build device tree blobs
+$(obj)/%.dtb: $(dtstree)/%.dts $(obj)/dtc
+	$(obj)/dtc -O dtb -o $(obj)/$*.dtb -b 0 $(dtstree)/$*.dts
+
 # If there isn't a platform selected then just strip the vmlinux.
 ifeq (,$(image-y))
 image-y := vmlinux.strip