[U-Boot] [PATCH v2 1/2] igep00x0: enable the use of a plain text file

[Anatolij Gustschin]

From: Enric Balletbo i Serra <eballetbo at iseebcn.com>

Based on commit cf073e49bc3502be1b48a0e3faf0cde9edbb89db for beagleboard

Using the new env import command it is possible to use plain text files instead
of script-images. Plain text files are much easier to handle.

E.g. If your boot.scr contains the following:
 -----------------------------------
setenv dvimode 1024x768-16 at 60
run loaduimage
run mmcboot
-----------------------------------
you could create a file named uEnv.txt and use that instead of boot.scr:
 -----------------------------------
dvimode=1024x768-16 at 60
uenvcmd=run loaduimage; run mmcboot
-----------------------------------
The variable uenvcmd (if existent) will be executed (using run) after uEnv.txt
was loaded. If uenvcmd doesn't exist the default boot sequence will be started,
therefore you could just use
-----------------------------------
dvimode=1024x768-16 at 60
-----------------------------------
as uEnv.txt because loaduimage and mmcboot is part of the default boot sequence

Signed-off-by: Enric Balletbo i Serra <eballetbo at iseebcn.com>
Signed-off-by: Anatolij Gustschin <agust at denx.de>
---
v2:
 - rebased on u-boot-ti/master

 include/configs/igep00x0.h |   28 ++++++++++++++++------------
 1 files changed, 16 insertions(+), 12 deletions(-)

diff --git a/include/configs/igep00x0.h b/include/configs/igep00x0.h
index d2b4b84..31ddabc 100644
--- a/include/configs/igep00x0.h
+++ b/include/configs/igep00x0.h
@@ -161,9 +161,9 @@
 		"omapdss.def_disp=${defaultdisplay} " \
 		"root=${nandroot} " \
 		"rootfstype=${nandrootfstype}\0" \
-	"loadbootscript=fatload mmc ${mmcdev} ${loadaddr} boot.scr\0" \
-	"bootscript=echo Running bootscript from mmc ...; " \
-		"source ${loadaddr}\0" \
+	"loadbootenv=fatload mmc ${mmcdev} ${loadaddr} uEnv.txt\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 ...; " \
 		"run mmcargs; " \
@@ -175,15 +175,19 @@
 
 #define CONFIG_BOOTCOMMAND \
 	"if mmc rescan ${mmcdev}; then " \
-		"if run loadbootscript; then " \
-			"run bootscript; " \
-		"else " \
-			"if run loaduimage; then " \
-				"run mmcboot; " \
-			"else run nandboot; " \
-			"fi; " \
-		"fi; " \
-	"else run nandboot; fi"
+		"echo SD/MMC found on device ${mmcdev};" \
+		"if run loadbootenv; then " \
+			"run importbootenv;" \
+		"fi;" \
+		"if test -n $uenvcmd; then " \
+			"echo Running uenvcmd ...;" \
+			"run uenvcmd;" \
+		"fi;" \
+		"if run loaduimage; then " \
+			"run mmcboot;" \
+		"fi;" \
+	"fi;" \
+	"run nandboot;" \
 
 #define CONFIG_AUTO_COMPLETE		1
 
-- 
1.7.1