@@ -67,6 +67,9 @@ FIT_CONF_PREFIX[doc] = "Prefix to use for FIT configuration node name"
FIT_SUPPORTED_INITRAMFS_FSTYPES ?= "cpio.lz4 cpio.lzo cpio.lzma cpio.xz cpio.zst cpio.gz ext2.gz cpio"
+# Allow user to select the default DTB for FIT image when multiple dtb's exists.
+FIT_CONF_DEFAULT_DTB ?= ""
+
# Keys used to sign individually image nodes.
# The keys to sign image nodes must be different from those used to sign
# configuration nodes, otherwise the "required" property, from
@@ -369,6 +372,7 @@ fitimage_emit_section_config() {
bootscr_line=""
setup_line=""
default_line=""
+ default_dtb_image="${FIT_CONF_DEFAULT_DTB}"
# conf node name is selected based on dtb ID if it is present,
# otherwise its selected based on kernel ID
@@ -411,7 +415,17 @@ fitimage_emit_section_config() {
# default node is selected based on dtb ID if it is present,
# otherwise its selected based on kernel ID
if [ -n "$dtb_image" ]; then
- default_line="default = \"${FIT_CONF_PREFIX}$dtb_image\";"
+ # Select default node as user specified dtb when
+ # multiple dtb exists.
+ if [ -n "$default_dtb_image" ]; then
+ if [ -s "${EXTERNAL_KERNEL_DEVICETREE}/$default_dtb_image" ]; then
+ default_line="default = \"${FIT_CONF_PREFIX}$default_dtb_image\";"
+ else
+ bbwarn "Couldn't find a valid user specified dtb in ${EXTERNAL_KERNEL_DEVICETREE}/$default_dtb_image"
+ fi
+ else
+ default_line="default = \"${FIT_CONF_PREFIX}$dtb_image\";"
+ fi
else
default_line="default = \"${FIT_CONF_PREFIX}$kernel_id\";"
fi