bsp: fitimage-legacyhs: add default dtb support

FIT_CONF_DEFAULT_DTB config specifies the default dtb file for the
FITimage when multiple ones are provided[1].

Legacyhs fitimage does not currently support this feature set which is
required for repurposing the same class for falcon boot.

This patch adds support for FIT_CONF_DEFAULT_DTB without affecting
existing platforms that rely on legacyhs fitImage.

[1]:
https://docs.yoctoproject.org/ref-manual/variables.html#term-FIT_CONF_DEFAULT_DTB

Signed-off-by: Anshul Dalal <anshuld@ti.com>
Signed-off-by: Ryan Eatmon <reatmon@ti.com>

1 files changed, 16 insertions, 7 deletions

diff --git a/meta-ti-bsp/classes/kernel-fitimage-legacyhs.bbclass b/meta-ti-bsp/classes/kernel-fitimage-legacyhs.bbclass
index 5e1fa56a..61813555 100644
--- a/meta-ti-bsp/classes/kernel-fitimage-legacyhs.bbclass
+++ b/meta-ti-bsp/classes/kernel-fitimage-legacyhs.bbclass
@@ -316,6 +316,7 @@ EOF
 # $4 ... ramdisk ID
 # $5 ... config ID
 # $6 ... tee ID/name
+# $7 ... default DTB ID
 fitimage_emit_section_config() {
 
         conf_csum=${FITIMAGE_HASH_ALGO}
@@ -370,6 +371,16 @@ fitimage_emit_section_config() {
                 final_conf_desc="${conf_desc}"
         fi
 
+        default_dtb_count=${7}
+        if [ "x${FITIMAGE_CONF_BY_NAME}" = "x1" ] ; then
+                default_conf_name="${FIT_CONF_DEFAULT_DTB}"
+        else
+                default_conf_name="conf-${default_dtb_count}"
+        fi
+        cat << EOF >> ${1}
+        default = "${default_conf_name}";
+EOF
+
         dtbcount=1
         for DTB in ${KERNEL_DEVICETREE}; do
                 DTB=$(basename "${DTB}")
@@ -386,12 +397,6 @@ fitimage_emit_section_config() {
                         fdt_line="fdt = \"fdt-${dtbcount}\";"
                 fi
 
-                if [ "x${dtbcount}" = "x1" ]; then
-                        cat << EOF >> ${1}
-                default = "${conf_name}";
-EOF
-                fi
-
 # Generate a single configuration section
                         cat << EOF >> ${1}
                 ${conf_name} {
@@ -524,6 +529,7 @@ fitimage_assemble() {
         ramdiskcount=${3}
         setupcount=""
         teecount=1
+        default_dtb_count=1
         rm -f ${1} arch/${ARCH}/boot/${2}
 
         fitimage_emit_fit_header ${1}
@@ -544,6 +550,9 @@ fitimage_assemble() {
                 dtbcount=1
                 dtboaddress="${UBOOT_DTBO_LOADADDRESS}"
                 for DTB in ${KERNEL_DEVICETREE}; do
+                        if [ "${DTB}" = "${FIT_CONF_DEFAULT_DTB}" ]; then
+                                default_dtb_count=${dtbcount}
+                        fi
                         if echo ${DTB} | grep -q '/dts/'; then
                                 bbwarn "${DTB} contains the full path to the the dts file, but only the dtb name should be used."
                                 DTB=`basename ${DTB} | sed 's,\.dts$,.dtb,g'`
@@ -660,7 +669,7 @@ fitimage_assemble() {
         else
                 teeref="${teecount}"
         fi
-        fitimage_emit_section_config ${1} "${kernelcount}" "${dtbref}" "${ramdiskcount}" "${setupcount}" "${teeref}"
+        fitimage_emit_section_config ${1} "${kernelcount}" "${dtbref}" "${ramdiskcount}" "${setupcount}" "${teeref}" "${default_dtb_count}"
 
         fitimage_emit_section_maint ${1} sectend