fdt: Add support for embedded device tree (CONFIG_OF_EMBED)

This new option allows U-Boot to embed a binary device tree into its image
to allow run-time control of peripherals. This device tree is for U-Boot's
own use and is not necessarily the same one as is passed to the kernel.

BUG=chromium-os:11623
TEST=build and boot U-Boot on Seaboard

Change-Id: I024d01079a44395e122a8b53e3901ba9a007dc5a
Reviewed-on: http://gerrit.chromium.org/gerrit/621
Reviewed-by: Doug Anderson <dianders@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/mkconfig b/mkconfig
index 6ff533f339..04ea12a464 100755
--- a/mkconfig
+++ b/mkconfig
@@ -127,7 +127,10 @@ echo "BOARD  = ${board}" >> config.mk
 
 [ "${vendor}" ] && echo "VENDOR = ${vendor}" >> config.mk
 
-[ "${soc}"    ] && echo "SOC    = ${soc}"    >> config.mk
+if [ -n "${soc}" ] ; then
+	echo "SOC    = ${soc}" >> config.mk
+	echo "DEVICE_TREE = ${soc}-${board}" >> config.mk
+fi
 
 # Assign board directory to BOARDIR variable
 if [ -z "${vendor}" ] ; then