From: Sascha Hauer <s.hauer@pengutronix.de>
To: Thomas Mayer <thomas.mayer@telemotive.de>
Cc: barebox@lists.infradead.org
Subject: Re: Update barebox on mmc without touching partition table
Date: Fri, 8 Apr 2011 15:21:27 +0200 [thread overview]
Message-ID: <20110408132127.GW7285@pengutronix.de> (raw)
In-Reply-To: <4D9ED2EC.8070406@telemotive.de>
Hi Thomas,
On Fri, Apr 08, 2011 at 11:18:36AM +0200, Thomas Mayer wrote:
> Hi,
>
> to copy barebox to a mmc I use the command "dd if=barebox.bin
> of=/dev/sdb bs=512 seek=2 skip=2 && sync". So I don't touch the
> first 0x400 bytes with contains the partition table and everything
> is fine.
>
> But I want to write a little script to update barebox itself via
> tftp. So I create a partition "/dev/self0" (0x00000 to 0x40000) and
> update barebox with "tftp barebox.bin /dev/self0". The problem is
> that barebox write the first 0x400 bytes too and overwrite the
> partition table .
>
> Is there any way to "seek" and "skip" with barebox?
Not directly. What you can do is this:
tftp barebox.bin
memcpy -s barebox.bin -d /dev/self0 512 0
Sascha
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next prev parent reply other threads:[~2011-04-08 13:21 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-08 9:18 Thomas Mayer
2011-04-08 13:21 ` Sascha Hauer [this message]
2011-04-13 9:28 ` Thomas Mayer
2011-04-13 9:51 ` Marc Kleine-Budde
2011-04-13 10:55 ` Thomas Mayer
2011-04-13 11:41 ` Marc Kleine-Budde
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