Add a check for uboot-device-tree dtb

Added below changes:
1)Updated operator in if condition from `==` to `=` as it is used for string comparison in both Bash and Dash, making the script compatible with both shells.
2)Checking for uboot-device-tree.dtb file in RECIPE_SYSROOT path before applying fdtoverlay.

Signed-off-by: Tejas Bhumkar <tejas.arvind.bhumkar@amd.com>
Signed-off-by: Mark Hatle <mark.hatle@amd.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/meta-xilinx-core/recipes-bsp/u-boot/u-boot-xlnx-blob.inc b/meta-xilinx-core/recipes-bsp/u-boot/u-boot-xlnx-blob.inc
index baefe293..bbf4125f 100644
--- a/meta-xilinx-core/recipes-bsp/u-boot/u-boot-xlnx-blob.inc
+++ b/meta-xilinx-core/recipes-bsp/u-boot/u-boot-xlnx-blob.inc
@@ -100,7 +100,7 @@ do_blob_generate () {
                 DTBO=$(echo $CC_DTB | cut -d: -f1)
         BASE_DTB=$(echo $CC_DTB | cut -d: -f2)
         OUTPUT_DTB=$(echo $CC_DTB | cut -d: -f3)
-        if [ "${SYSTEM_DTB_BLOB}" == "1" ]; then
+        if [ "${SYSTEM_DTB_BLOB}" = "1" ]; then
                 BASE_SYS_DTB="${RECIPE_SYSROOT}/${DTB_PATH}/${DTB_FILE_NAME}"
         else
                 BASE_SYS_DTB="${B}/arch/arm/dts/${BASE_DTB}"
@@ -115,8 +115,8 @@ do_blob_generate () {
                 DTBO=$(echo $CC_DTB | cut -d: -f1)
         OUTPUT_DTB=$(echo $CC_DTB | cut -d: -f3)
         BASE_SYS_DTB="${RECIPE_SYSROOT}/${DTB_PATH}/${PACKAGE_UBOOT_DTB_NAME}"
+                if [ -f ${B}/arch/arm/dts/${DTBO} ] && [ -f ${BASE_SYS_DTB} ]; then
         bbnote "fdtoverlay -o ${DT_BLOB_DIR}/${OUTPUT_DTB} -i ${BASE_SYS_DTB} ${B}/arch/arm/dts/${DTBO}"
-                if [ -f ${B}/arch/arm/dts/${DTBO} ]; then
         fdtoverlay -o ${DT_BLOB_DIR}/${OUTPUT_DTB} -i ${BASE_SYS_DTB} ${B}/arch/arm/dts/${DTBO}
                 fi
         done