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Date: Thu, 15 Apr 2010 10:05:46 +0200
From: 'Sascha Hauer' <s.hauer@pengutronix.de>
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Subject: Re: booting uImage for mx35 3stack
To: Marc Reilly <marc@cpdesign.com.au>
Cc: barebox@lists.infradead.org

On Thu, Apr 15, 2010 at 02:04:16PM +1000, Marc Reilly wrote:
> Hi Sascha,
> 
> Thanks for all your help, and speedy responses.
> 
> > > Nothing happens after "done, booting the kernel" (boot snippet at end
> > > of
> > > email)
> > 
> > Newer kernels have earlyprintk support that could be of help here.
> > Please apply commit-id 93fd03a8c6728b58879f8af20ffd55d9c32a778b to your
> > kernel and add 'earlyprintk' to your kernel command line.
> 
> Great tip. It shows the kernel is starting ok and getting stuck just after
> irqs are enabled. 
> I'm still a bit baffled as to why this only happens with barebox.

Sounds somewhat familiar. I have just tested 2.6.31 and
2.6.34-rc-something on my board, both working fine.
Maybe this has something to do with the clocks. You could check the
register values of the CCM module in barebox and U-Boot
(md 0x53f80000+0x80).

Also note this mail:

http://lists.infradead.org/pipermail/linux-arm-kernel/2010-April/012691.html

I suspect a bug in the kernel there which is still present.

Sascha


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