recipes-bsp: u-boot: Add u-boot-mergeconfig.inc to handle fragment u-boot config

- U-boot recipe in OE-Core supports out-of-tree config fragments that are passed via
SRC_URI and automatically merges all *.cfg files as fragments. This makes specifying
config fragments in the machine configuration a bit difficult. Hence, add a logic which
will ensure we handle u-boot config fragments using a new variable UBOOT_CONFIG_FRAGMENTS.

- The u-boot-mergeconfig.inc will allow us to build u-boot with list of config fragments
specified in UBOOT_CONFIG_FRAGMENTS along with the base defconfig mentioned in UBOOT_MACHINE.

- Include u-boot-mergeconfig.inc in u-boot-ti.inc

Signed-off-by: Chirag Shilwant <c-shilwant@ti.com>
Reviewed-by: Denys Dmytriyenko <denys@konsulko.com>
Signed-off-by: Ryan Eatmon <reatmon@ti.com>

2 files changed, 8 insertions, 0 deletions

diff --git a/meta-ti-bsp/recipes-bsp/u-boot/u-boot-mergeconfig.inc b/meta-ti-bsp/recipes-bsp/u-boot/u-boot-mergeconfig.inc
new file mode 100644
index 00000000..c7ce5047
--- /dev/null
+++ b/meta-ti-bsp/recipes-bsp/u-boot/u-boot-mergeconfig.inc
@@ -0,0 +1,7 @@
+do_configure:append () {
+   if [ -n "${UBOOT_CONFIG_FRAGMENTS}" ] && [ -n "${UBOOT_MACHINE}" ]
+   then
+       oe_runmake -C ${S} O=${B} ${UBOOT_MACHINE} ${UBOOT_CONFIG_FRAGMENTS}
+       oe_runmake -C ${S} O=${B} olddefconfig
+   fi
+}
diff --git a/meta-ti-bsp/recipes-bsp/u-boot/u-boot-ti.inc b/meta-ti-bsp/recipes-bsp/u-boot/u-boot-ti.inc
index d9a3a520..92eaf0cc 100644
--- a/meta-ti-bsp/recipes-bsp/u-boot/u-boot-ti.inc
+++ b/meta-ti-bsp/recipes-bsp/u-boot/u-boot-ti.inc
@@ -7,6 +7,7 @@ SPL_BINARY ?= "MLO"
 
 require ${COREBASE}/meta/recipes-bsp/u-boot/u-boot-common.inc
 require ${COREBASE}/meta/recipes-bsp/u-boot/u-boot.inc
+require u-boot-mergeconfig.inc
 
 FILESEXTRAPATHS:prepend := "${THISDIR}/u-boot:"