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omap3_beagle: enable the use of a plain text file

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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@60
run loaduimage
run mmcboot
-----------------------------------
you could create a file named uEnv.txt and use that instead of boot.scr:
-----------------------------------
dvimode=1024x768-16@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@60
-----------------------------------
as uEnv.txt because loaduimage and mmcboot is part of the default boot sequence

Signed-off-by: Jason Kridner <jkridner@beagleboard.org>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
This commit is contained in:
Alexander Holler 2011-04-18 17:25:13 -04:00 committed by Albert ARIBAUD
parent 70d8c9446f
commit cf073e49bc
1 changed files with 16 additions and 12 deletions
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28
include/configs/omap3_beagle.h
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@ -228,9 +228,9 @@
"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; " \
@ -242,15 +242,19 @@
#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
/*