U-Boot - Revision history

Ashcharles at 23:37, 1 April 2016

2016-04-01T23:37:37Z

Ashcharles at 01:26, 17 December 2010

2010-12-17T01:26:34Z

Ashcharles at 19:19, 12 March 2010

2010-03-12T19:19:16Z

Ashcharles at 01:55, 12 March 2010

2010-03-12T01:55:55Z

Ashcharles: Created page with '== boot.scr == On boot, U-Boot looks for a file called ''boot.scr'' which it will try to run. Users can create such a script to do boot time configuration of the board, do low-l…'

2010-03-12T00:45:42Z

Created page with '== boot.scr == On boot, U-Boot looks for a file called ''boot.scr'' which it will try to run. Users can create such a script to do boot time configuration of the board, do low-l…'

New page

== boot.scr ==
On boot, U-Boot looks for a file called ''boot.scr'' which it will try to run. Users can create such a script to do boot time configuration of the board, do low-level testing, or set up the U-Boot environment. A common use case is to do a one-time configuration and reflash of boards to be deployed without microSD cards.

For example, this script flashes a new x-load, U-Boot, and kernel image to an Overo board. If it is mounted on an expansion board with LEDs, the blue one will light up if the script completes successfully or a red one will light up if the script fails. The following files should be loaded on a microSD card (taking care to copy over x-load first):
* x-load-new
* mlo
* u-boot
* u-boot-new
* uimage-new

<pre>
setenv success 1
setenv loadaddr 0x82000000
setenv ext new
# clear daughter card LEDs (GPIO21 and GPIO22)
mw 48310034 ff9fffff
mw 48310094 00600000

# Two notes:
# 1. FAT file-systems handle letter case strangely---we should use
# lower-case only
# 2. x-load should be copied first to the microSD card otherwise U-Boot
# doesn't see it.

if mmc init; then
echo "Flashing uimage${ext}..."
nandecc sw
nand erase
if fatload mmc 1 ${loadaddr} uimage${ext}; then
nand write ${loadaddr} 0x00200000 0x00500000
else
echo "ERROR: couldn\'t find uimage${ext}..."
setenv success 0
fi

echo "Flashing u-boot${ext}.bin..."
if fatload mmc 1 ${loadaddr} u-boot${ext}.bin; then
nand write ${loadaddr} 0x00080000 0x001c0000
else
echo "ERROR: couldn\'t find u-boot${ext}.bin..."
setenv success 0
fi

echo "Flashing x-load${ext}..."
if fatload mmc 1 ${loadaddr} x-load${ext}; then
nandecc hw
nand write ${loadaddr} 0x00000000 0x00080000
else
echo "ERROR: couldn\'t find x-load${ext}..."
setenv success 0
fi
else
echo "Please insert a microSD and reboot the board"
setenv success 0
fi

# display error condition
if test $success -eq 1; then
# SUCCESS: light up LED on GPIO22
mw 48310090 00400000
echo "COMPLETED SUCCESSFULLY"
else
# ERROR: light up LED on GPIO21
mw 48310090 00200000
echo "COMPLETED WITH ERRORS"
fi
</pre>

← Older revision		Revision as of 19:19, 12 March 2010
Line 90:		Line 90:
	* '''uimage-new''' --- your new ima		* '''uimage-new''' --- your new ima
	Unmount the microSD card from the host machine, load it onto your Gumstix COM, and boot the board. The ''boot.scr'' file should be run once x-load (MLO) has passed control to U-Boot.		Unmount the microSD card from the host machine, load it onto your Gumstix COM, and boot the board. The ''boot.scr'' file should be run once x-load (MLO) has passed control to U-Boot.
		+
		+	==Links==
		+	* [http://www.denx.de/wiki/view/DULG/UBootScripts U-Boot Scripts]

@@ Line 1: / Line 1: @@
 == boot.scr ==
 On boot, U-Boot looks for a file called ''boot.scr'' which it will try to run.  Users can create such a script to do boot time configuration of the board, do low-level testing, or set up the U-Boot environment.  A common use case is to do a one-time configuration and reflash of boards to be deployed without microSD cards.
 === Example Script ===

@@ Line 8: / Line 8: @@
 setenv success 1
 setenv loadaddr 0x82000000
-setenv ext new
+setenv ext -new
 # clear daughter card LEDs (GPIO21 and GPIO22)
 mw 48310034 ff9fffff

@@ Line 2: / Line 2: @@
 On boot, U-Boot looks for a file called ''boot.scr'' which it will try to run.  Users can create such a script to do boot time configuration of the board, do low-level testing, or set up the U-Boot environment.  A common use case is to do a one-time configuration and reflash of boards to be deployed without microSD cards.
-For example, this script flashes a new x-load, U-Boot, and kernel image to an Overo board.  If it is mounted on an expansion board with LEDs, the blue one will light up if the script completes successfully or a red one will light up if the script fails.  The following files should be loaded on a microSD card (taking care to copy over x-load first):
+=== Example Script ===
- * x-load-new
+For example, the script below flashes a new x-load, U-Boot, and kernel image to an Overo board.  If it is mounted on an expansion board with LEDs, the blue one will light up if the script completes successfully or a red one will light up if the script fails.
- * mlo
- * u-boot
- * u-boot-new
- * uimage-new
 <pre>
@@ Line 28: / Line 24: @@
    nand erase
    if fatload mmc 1 ${loadaddr} uimage${ext}; then
-      nand write ${loadaddr} 0x00200000 0x00500000
+      nand write ${loadaddr} 0x00280000 0x00200000
    else
      echo "ERROR: couldn\'t find uimage${ext}..."
@@ Line 66: / Line 62: @@
 fi
 </pre>