omap3_beagle: Add boot script support to omap3 beagle board

This patch adds boot script support to omap3 beagle board.

Signed-off-by: Guillaume GARDET <guillaume.gardet@free.fr>
Cc: Tom Rini <trini@ti.com>
diff --git a/include/configs/omap3_beagle.h b/include/configs/omap3_beagle.h
index 644e97f..f25a940 100644
--- a/include/configs/omap3_beagle.h
+++ b/include/configs/omap3_beagle.h
@@ -207,6 +207,9 @@
 		"rootfstype=${ramrootfstype}\0" \
 	"loadramdisk=load mmc ${bootpart} ${rdaddr} ${bootdir}/${ramdisk}\0" \
 	"loadimage=load mmc ${bootpart} ${loadaddr} ${bootdir}/${bootfile}\0" \
+	"loadbootscript=load mmc ${mmcdev} ${loadaddr} boot.scr\0" \
+	"bootscript=echo Running bootscript from mmc${mmcdev} ...; " \
+		"source ${loadaddr}\0" \
 	"loadfdt=run validatefdt; load mmc ${bootpart} ${fdtaddr} ${bootdir}/${fdtfile}\0" \
 	"mmcboot=echo Booting from mmc ...; " \
 		"run mmcargs; " \
@@ -243,9 +246,13 @@
 			"echo Running uenvcmd ...;" \
 			"run uenvcmd;" \
 		"fi;" \
-		"if run loadimage; then " \
-			"run mmcboot;" \
-		"fi;" \
+		"if run loadbootscript; then " \
+			"run bootscript; " \
+		"else " \
+			"if run loadimage; then " \
+				"run mmcboot;" \
+			"fi;" \
+		"fi; " \
 	"fi;" \
 	"run nandboot;" \
 	"setenv bootfile zImage;" \