[OE-core] [rocko][PATCH] kernel-fitimage: Allow setting of DTB/DTBO relocation address

[Mihai Serban]

From: Alex Kiernan <alex.kiernan at gmail.com>

Introduce UBOOT_DTB_LOADADDRESS and UBOOT_DTBO_LOADADDRESS so that you
can set where U-Boot loads full and overlay DTBs. This is required when
using bootm's overlay support to construct the final DTB.

(From OE-Core rev: 05d2230db1d7379494814407fc0d79d7e755d89e)

Signed-off-by: Alex Kiernan <alex.kiernan at gmail.com>
Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
 meta/classes/kernel-fitimage.bbclass | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/meta/classes/kernel-fitimage.bbclass b/meta/classes/kernel-fitimage.bbclass
index 50a91e199069..f3c2ff0a3004 100644
--- a/meta/classes/kernel-fitimage.bbclass
+++ b/meta/classes/kernel-fitimage.bbclass
@@ -135,6 +135,15 @@ fitimage_emit_section_dtb() {
 
 	dtb_csum="sha1"
 
+	dtb_loadline=""
+	dtb_ext=${DTB##*.}
+	if [ "${dtb_ext}" = "dtbo" ]; then
+		if [ -n "${UBOOT_DTBO_LOADADDRESS}" ]; then
+			dtb_loadline="load = <${UBOOT_DTBO_LOADADDRESS}>;"
+		fi
+	elif [ -n "${UBOOT_DTB_LOADADDRESS}" ]; then
+		dtb_loadline="load = <${UBOOT_DTB_LOADADDRESS}>;"
+	fi
 	cat << EOF >> ${1}
                 fdt@${2} {
                         description = "Flattened Device Tree blob";
@@ -142,6 +151,7 @@ fitimage_emit_section_dtb() {
                         type = "flat_dt";
                         arch = "${UBOOT_ARCH}";
                         compression = "none";
+                        ${dtb_loadline}
                         hash at 1 {
                                 algo = "${dtb_csum}";
                         };
-- 
2.17.1