Flashing NAND from NAND

[Matthias Huber]

i personally do my backups with "cp"

cp /dev/mtdblock6 /media/card/rootfs
and vice versa.

#blocksave.sh
#!/bin/sh -x
for i in 1 2 3 4 5 6 ; do echo cp /dev/mtdblock$i ${i}_* ; cp 
/dev/mtdblock$i ${i}_* ; done

# blockrestore.sh
#!/bin/sh -x
for i in 1 2 3 4 5 6 ; do echo cp ${i}_* /dev/mtdblock$i ; cp ${i}_* 
/dev/mtdblock$i ; done

and in practice, this works for backup _and_ restore

Atilla Filiz schrieb:
> On IRC, I asked someone to
> dd if=/dev/mtd0 of=nor.img
> for me. Does that work? The link in the wiki page is dead.
> I always flash my kernel and rootfs from NAND u-boot menu.
>
> On Sun, Oct 18, 2009 at 5:25 PM, Joachim Ott <jo.omsl at googlemail.com 
> <mailto:jo.omsl at googlemail.com>> wrote:
>
>     2009/10/18 Atilla Filiz <atilla.filiz at gmail.com
>     <mailto:atilla.filiz at gmail.com>>:
>     > Hello
>     > I have a blank NOR and didn't have time to hack and flash
>     it(don't want to
>     > buy a debug board). Is it safe to boot into NAND u-boot menu and
>     flash a new
>     > bootloader to NAND? Probably not a good idea.
>
>     To flash something via USB cable with dfu-util you have to be in the
>     NOR boot menu. But it's totally legal to reflash /dev/mtd1 (u-boot),
>     mtd2 (u-boot_env) or mtd3 (kernel) when you have booted into the
>     rootfs in NAND. When you've booted from sd-card, you can reflash mtd6
>     (rootfs) too. Use flash_eraseall and nand_write for this.
>
>     Writing to /dev/mtd0 (NOR boot) is possible without debug board too,
>     you need need to enable write access to it. See
>     http://wiki.openmoko.org/wiki/Flashing_NOR
>
>     _______________________________________________
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>
>
>
>
> -- 
> ---------------------------------------------------------
> Atilla Filiz
> Eindhoven University of Technology
> Embedded Systems, Master's Programme
> --------------------------------------------------------
> ------------------------------------------------------------------------
>
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>   


-- 
Mit freundlichen Grüssen
Matthias Huber 
Kohlstattstr. 14
86459 Wollishausen
Tel: 08238-7998
LPI000181125

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