From: Weiguang Shi <wgshizz@yahoo.com>
To: Gary Thomas <gary@mlbassoc.com>
Cc: ecos-discuss <ecos-discuss@ecos.sourceware.org>
Subject: Re: AW: [ECOS] cat zImage >/dev/mtd1 does not work
Date: Fri, 19 Jan 2007 18:28:00 -0000 [thread overview]
Message-ID: <543150.90703.qm@web30414.mail.mud.yahoo.com> (raw)
In-Reply-To: <45B10B61.1080404@mlbassoc.com>
That sounds great. Thanks!
Wei
--- Gary Thomas <gary@mlbassoc.com> wrote:
> Weiguang Shi wrote:
> > That's even better and was the solution that I was looking for.
> > The question is how, from the OS, can I update the FIS. Obviously
> > I need to know the structure of the "FIS directory" partition and
> > find the offset of that checksum and insert a '0' there by
> > - reading the whole partition into ram,
> > - changing the bit, erasing the partition on the flash,
> > - and finally flashing the modified partition in the ram back.
> >
> > Any suggestions as to where to start?
>
> <redboot/fis.h>
>
> Also, drivers/mtd has some RedBoot FIS parsing code in it. You could
> look at it for pointers.
>
> > --- Gary Thomas <gary@mlbassoc.com> wrote:
> >
> >> Note: you don't really need to change RedBoot. Just update the
> >> FIS [directory] entry for the image you are changing, either with
> >> the corrected checksum, or the value 0. RedBoot ignores the checksum
> >> when the stored value is 0.
> >>
>
> --
> ------------------------------------------------------------
> Gary Thomas | Consulting for the
> MLB Associates | Embedded world
> ------------------------------------------------------------
>
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next prev parent reply other threads:[~2007-01-19 18:28 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-19 7:48 Neundorf, Alexander
2007-01-19 9:00 ` [ECOS] Ecos/redboot on Xscale pxa270 tejas pawaskar
2007-01-19 16:50 ` AW: [ECOS] cat zImage >/dev/mtd1 does not work Weiguang Shi
2007-01-19 16:53 ` Andrew Lunn
2007-01-19 17:50 ` Gary Thomas
2007-01-19 18:08 ` Weiguang Shi
2007-01-19 18:18 ` Gary Thomas
2007-01-19 18:28 ` Weiguang Shi [this message]
2007-01-20 2:00 ` Weiguang Shi
2007-01-20 13:46 ` Gary Thomas
2007-01-23 2:08 ` Weiguang Shi
2007-01-23 8:42 ` Gary Thomas
2007-01-23 19:34 ` Weiguang Shi
2007-01-23 20:11 ` Gary Thomas
2007-01-28 21:26 ` Weiguang Shi
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