[OE-Core][langdale][PATCH 2/2] kernel-fitimage: Allow user to select dtb when multiple dtb exists

[Sandeep Gundlupet Raju via lists.openembedded.org]

Allow user to select the default DTB for FIT image when multiple
dtb's exists.

>From machine.conf or local.conf user can specify the default dtb
for FIT image as shown below.

FIT_CONF_DEFAULT_DTB = "board-default.dtb"

Signed-off-by: Sandeep Gundlupet Raju <sandeep.gundlupet-r...@amd.com>
---
 meta/classes-recipe/kernel-fitimage.bbclass | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/meta/classes-recipe/kernel-fitimage.bbclass 
b/meta/classes-recipe/kernel-fitimage.bbclass
index 183d42308d..9735d88a60 100644
--- a/meta/classes-recipe/kernel-fitimage.bbclass
+++ b/meta/classes-recipe/kernel-fitimage.bbclass
@@ -73,6 +73,9 @@ 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
@@ -375,6 +378,7 @@ 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
@@ -417,7 +421,13 @@ 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
+                               default_line="default = 
\"${FIT_CONF_PREFIX}$default_dtb_image\";"
+                       else
+                               default_line="default = 
\"${FIT_CONF_PREFIX}$dtb_image\";"
+                       fi
                else
                        default_line="default = 
\"${FIT_CONF_PREFIX}$kernel_id\";"
                fi
-- 
2.25.1


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