pcm051: Add boot script support to pcm051

This patch adds boot script support to pcm051

Signed-off-by: Matwey V. Kornilov <matwey.kornilov@gmail.com>

include/configs/pcm051.h

@@ -45,6 +45,9 @@
 		"root=${mmcroot} " \
 		"rootfstype=${mmcrootfstype}\0" \
 	"bootenv=uEnv.txt\0" \
+	"loadbootscript=load mmc ${mmcdev} ${loadaddr} boot.scr\0" \
+	"bootscript=echo Running bootscript from mmc${mmcdev} ...; " \
+		"source ${loadaddr}\0" \
 	"loadbootenv=fatload mmc ${mmcdev} ${loadaddr} ${bootenv}\0" \
 	"importbootenv=echo Importing environment from mmc ...; " \
 		"env import -t $loadaddr $filesize\0" \
@@ -65,17 +68,21 @@
 #define CONFIG_BOOTCOMMAND \
 	"mmc dev ${mmcdev}; if mmc rescan; then " \
 		"echo SD/MMC found on device ${mmcdev};" \
-		"if run loadbootenv; then " \
+		"if run loadbootscript; then " \
-			"echo Loaded environment from ${bootenv};" \
+			"run bootscript;" \
-			"run importbootenv;" \
+		"else " \
-		"fi;" \
+			"if run loadbootenv; then " \
-		"if test -n $uenvcmd; then " \
+				"echo Loaded environment from ${bootenv};" \
-			"echo Running uenvcmd ...;" \
+				"run importbootenv;" \
-			"run uenvcmd;" \
+			"fi;" \
-		"fi;" \
+			"if test -n $uenvcmd; then " \
-		"if run loaduimage; then " \
+				"echo Running uenvcmd ...;" \
-			"run mmcboot;" \
+				"run uenvcmd;" \
-		"fi;" \
+			"fi;" \
+			"if run loaduimage; then " \
+				"run mmcboot;" \
+			"fi;" \
+		"fi ;" \
 	"fi;" \
 
 /* Clock Defines */