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From: Sascha Hauer <s.hauer@pengutronix.de>
To: "Boulais, Marc-Andre" <maboulais@rheinmetall.ca>
Cc: "barebox@lists.infradead.org" <barebox@lists.infradead.org>
Subject: Re: saveenv & erase with bad blocks present
Date: Tue, 3 Feb 2015 21:11:34 +0100	[thread overview]
Message-ID: <20150203201134.GQ12209@pengutronix.de> (raw)
In-Reply-To: <29A2697B0516A946B1023D5E798DFCF67BAB6E85@mail-ying>

On Tue, Feb 03, 2015 at 04:38:42PM +0000, Boulais, Marc-Andre wrote:
> Hi,
> I have flashed Barebox-2015.02.0 on my omap4 setup (using the Barebox update command) and I am now trying to modify the environment from the Barebox prompt. I have modified the env/config file and I would like to save my changes to NAND. 
> 
> For this task, I call the "saveenv" command and I get this result:
> 
> barebox@Phytec phyCORE-OMAP4460:/ saveenv
> saving environment
> saveenv: No space left on device
> 
> The "devinfo" command indicates to me that the /dev/nand0.bareboxenv partition is 128 Kb. 
> Just to be sure, I erase it and get the following error:
> 
> barebox@Phytec phyCORE-OMAP4460:/ erase /dev/nand0.bareboxenv.bb
> nand: nand_erase_nand: attempt to erase a bad block at page 0x00000140
> erase: I/O error
> 
> So I guess I am a bit confused here. 
> 1) Is "saveenv" the right command to save my changes to the environment ?

Yes.

> 2) How can I erase a NAND partition that has bad blocks ?

when erasing a .bb device (which you did above) should let barebox just
skip the bad blocks.

> 3) Can bad blocks be marked by software or are they all marked by the manufacturer ?

You can mark blocks as bad using the 'nand' command.

barebox tries to erase a bad block at page 0x140 which is 0x140 * 2048 =
0xa0000. In the device trees I see the environment partition starts at
0x100000. Could you tell me which config you built, post the startup messages
from barebox and the output of 'ls -l dev/nand0*'?

Sascha

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
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  parent reply	other threads:[~2015-02-03 20:11 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-03 16:38 Boulais, Marc-Andre
2015-02-03 19:52 ` Uwe Kleine-König
2015-02-03 20:11 ` Sascha Hauer [this message]
2015-02-03 20:44   ` Boulais, Marc-Andre
2015-02-05 10:16     ` Sascha Hauer
2015-02-05 19:09       ` Boulais, Marc-Andre
2015-02-05 21:23         ` Sascha Hauer
2015-02-06 17:03           ` Boulais, Marc-Andre
2015-02-09  7:18             ` Sascha Hauer
2015-02-09 13:37               ` Boulais, Marc-Andre
2015-02-10  9:20                 ` Sascha Hauer

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