[OE-core] [PATCH V3 1/3] u-boot: support merging .cfg files for UBOOT_CONFIG

["Ming Liu" <liu.ming50@gmail.com>]

From: Ming Liu <ming.liu@toradex.com>

U-boot recipe supports .cfg files in SRC_URI, but they would be merged
to .config during do_configure only when UBOOT_MACHINE is set, we
should also support merging .cfg files for UBOOT_CONFIG.

Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Signed-off-by: Ming Liu <ming.liu@toradex.com>
---
 meta/recipes-bsp/u-boot/u-boot.inc | 21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/meta/recipes-bsp/u-boot/u-boot.inc b/meta/recipes-bsp/u-boot/u-boot.inc
index 80f828df52..8cfd25020c 100644
--- a/meta/recipes-bsp/u-boot/u-boot.inc
+++ b/meta/recipes-bsp/u-boot/u-boot.inc
@@ -77,7 +77,23 @@ def find_cfgs(d):
     return sources_list
 
 do_configure () {
-    if [ -z "${UBOOT_CONFIG}" ]; then
+    if [ -n "${UBOOT_CONFIG}" ]; then
+        unset i j
+        for config in ${UBOOT_MACHINE}; do
+            i=$(expr $i + 1);
+            for type in ${UBOOT_CONFIG}; do
+                j=$(expr $j + 1);
+                if [ $j -eq $i ]; then
+                    oe_runmake -C ${S} O=${B}/${config} ${config}
+                    merge_config.sh -m -O ${B}/${config} ${B}/${config}/.config ${@" ".join(find_cfgs(d))}
+                    oe_runmake -C ${S} O=${B}/${config} oldconfig
+                fi
+            done
+            unset j
+        done
+        unset i
+        DEVTOOL_DISABLE_MENUCONFIG=true
+    else
         if [ -n "${UBOOT_MACHINE}" ]; then
             oe_runmake -C ${S} O=${B} ${UBOOT_MACHINE}
         else
@@ -85,8 +101,6 @@ do_configure () {
         fi
         merge_config.sh -m .config ${@" ".join(find_cfgs(d))}
         cml1_do_configure
-    else
-        DEVTOOL_DISABLE_MENUCONFIG=true
     fi
 }
 
@@ -114,7 +128,6 @@ do_compile () {
                 j=$(expr $j + 1);
                 if [ $j -eq $i ]
                 then
-                    oe_runmake -C ${S} O=${B}/${config} ${config}
                     oe_runmake -C ${S} O=${B}/${config} ${UBOOT_MAKE_TARGET}
                     for binary in ${UBOOT_BINARIES}; do
                         k=$(expr $k + 1);
-- 
2.26.2