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From: Lucas Stach <l.stach@pengutronix.de>
To: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Barebox List <barebox@lists.infradead.org>
Subject: Re: [PATCH] scripts: imx-image: fix first instruction in i.MX8MQ header
Date: Wed, 07 Nov 2018 10:21:58 +0100	[thread overview]
Message-ID: <1541582518.2508.36.camel@pengutronix.de> (raw)
In-Reply-To: <CAHQ1cqF1JKPm3tstZrB0oWdjF0xxhFPU86g_twnuCKLctrRhCQ@mail.gmail.com>

Am Dienstag, den 06.11.2018, 12:54 -0800 schrieb Andrey Smirnov:
> > On Tue, Nov 6, 2018 at 6:36 AM Lucas Stach <l.stach@pengutronix.de> wrote:
> > 
> > The instruction being patched in was a branch to 0x24000, instead of
> > the intended 0x9000. This doesn't matter when starting the image from
> > a regular boot source, but breaks starting the image via bootm, as we
> > rely on the jump in the first header instruction taking us to the
> > actual code.
> > 
> 
> For some reason I thought I submitted a patch fixing this, but
> apparently not. Did you have a chance to run this fix with and without
> signed HDMI firmware blob? AFAIR, adding it shifts entry point from
> 0x9000 to 0x28000 (don't quote me on this), so it's possible that some
> code around imx-image.c:894 might have to be added to handle this
> problem. This can be a subject for another patch, though.

Thanks for the valuable hint. I didn't yet try running with the signed
firmware. I'll keep this mind for when I do.

Regards,
Lucas

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      reply	other threads:[~2018-11-07  9:22 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-06 14:36 Lucas Stach
2018-11-06 20:54 ` Andrey Smirnov
2018-11-07  9:21   ` Lucas Stach [this message]

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