From cf073e49bc3502be1b48a0e3faf0cde9edbb89db Mon Sep 17 00:00:00 2001
From: Alexander Holler <holler@ahsoftware.de>
Date: Mon, 18 Apr 2011 17:25:13 -0400
Subject: [PATCH] omap3_beagle: enable the use of a plain text file
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>
---
include/configs/omap3_beagle.h | 28 ++++++++++++++++------------
1 file changed, 16 insertions(+), 12 deletions(-)
diff --git a/include/configs/omap3_beagle.h b/include/configs/omap3_beagle.h
index c064ae7e87..bfde910f04 100644
--- a/include/configs/omap3_beagle.h
+++ b/include/configs/omap3_beagle.h
@@ -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
/*
--
2.39.5