[U-Boot] [PATCH] configs: omap4_common: support load from uEnv.txt

[Nishanth Menon]

if traditionally used boot.scr is not found see if uEnv.txt
is available to load environment. uenvcmd is executed after load
of uEnv.txt if it is defined in the environment text file

Signed-off-by: Nishanth Menon <nm at ti.com>
---
 include/configs/omap4_common.h |   12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/include/configs/omap4_common.h b/include/configs/omap4_common.h
index a32369a..8b71beb 100644
--- a/include/configs/omap4_common.h
+++ b/include/configs/omap4_common.h
@@ -159,6 +159,10 @@
 	"loadbootscript=fatload mmc ${mmcdev} ${loadaddr} boot.scr\0" \
 	"bootscript=echo Running bootscript from mmc${mmcdev} ...; " \
 		"source ${loadaddr}\0" \
+	"bootenv=uEnv.txt\0" \
+	"loadbootenv=fatload mmc ${mmcdev} ${loadaddr} ${bootenv}\0" \
+	"importbootenv=echo Importing environment from mmc ...; " \
+		"env import -t $loadaddr $filesize\0" \
 	"loaduimage=fatload mmc ${mmcdev} ${loadaddr} uImage\0" \
 	"mmcboot=echo Booting from mmc${mmcdev} ...; " \
 		"run mmcargs; " \
@@ -169,6 +173,14 @@
 		"if run loadbootscript; then " \
 			"run bootscript; " \
 		"else " \
+			"if run loadbootenv; then " \
+				"echo Loaded environment from ${bootenv};" \
+				"run importbootenv;" \
+				"if test -n $uenvcmd; then " \
+					"echo Running uenvcmd ...;" \
+					"run uenvcmd;" \
+				"fi;" \
+			"fi;" \
 			"if run loaduimage; then " \
 				"run mmcboot; " \
 			"fi; " \
-- 
1.7.9.5