commit 67bce6b2b29779a2a936e7484895dafa744d7aff
author Simon Glass <sjg@chromium.org> Mon Jun 02 22:04:50 2014 -0600
committer Tom Rini <trini@ti.com> Wed Jun 11 16:25:46 2014 -0400
tree e0143f2b83f7bbba3d30f97785dad6f2624eb932
parent 7f3fa54a4042227c300389f66f4f274e005b604f

fdt: Add DEV_TREE_BIN option to specify a device tree binary file

In some cases, an externally-built device tree binary is required to be
attached to U-Boot. An example is when using image signing, since in that
case the .dtb file must include the public keys.

Add a DEV_TREE_BIN option to the Makefile, and update the documentation.

Usage is something like:

	make DEV_TREE_BIN=boot/am335x-boneblack-pubkey.dtb

Signed-off-by: Simon Glass <sjg@chromium.org>

dts/Makefile

diff --git a/dts/Makefile b/dts/Makefile
index 3fca5f5..f344efe 100644
--- a/dts/Makefile
+++ b/dts/Makefile
@@ -12,7 +12,11 @@
 DEVICE_TREE := unset
 endif
 
+ifneq ($(DEV_TREE_BIN),)
+DTB := $(DEV_TREE_BIN)
+else
 DTB := arch/$(ARCH)/dts/$(DEVICE_TREE).dtb
+endif
 
 $(obj)/dt.dtb: $(DTB) FORCE
 	$(call if_changed,shipped)