From: wangyanlong <killyouatonce@gmail.com>
To: linuxppc-embedded@ozlabs.org
Subject: Re: Virtex4FX12LC hangs in calibrating delay loop
Date: Tue, 29 Apr 2008 01:53:50 -0700 (PDT) [thread overview]
Message-ID: <16955743.post@talk.nabble.com> (raw)
In-Reply-To: <20070621151554.GA22663@cip.informatik.uni-erlangen.de>
I meet the same problem as yours , have you fix your problem now ??? I am
keep trying !!!!
Thomas Glanzmann wrote:
>
> Hello,
> I used the HEAD secretlabs kernel and used ml403 defconfig. I still see
> no serial output from the _kernel_ on the serial console. But I do see
> output from the in kernel embedded boot loader "load_kernel". I typed in
> stop in xmd and got an instruction pointer which points to:
>
> c00045a0 <__delay>:
> c00045a0: 2c 03 00 00 cmpwi r3,0
> c00045a4: 7c 69 03 a6 mtctr r3
> c00045a8: 4d 82 00 20 beqlr
> c00045ac: 42 00 00 00 bdnz- c00045ac <__delay+0xc>
> <<<<<<<<
> c00045b0: 4e 80 00 20 blr
>
> So I guess it is the calibrating delay loop and I am not sure. I can
> reproduce
> this. It is always in this function. Now I wonder is my board missing
> timer interrupts? What could be the reason for this. And of course one
> much more important question:
>
> - Is the serial console initialized before or after the
> calibrating delay loop?
>
> Is there a way to get a backtrace out of this? If that is the case what
> do I have to do? Recompile the Kernel with frame pointers and attach
> gdb?
>
> Thomas
> _______________________________________________
> Linuxppc-embedded mailing list
> Linuxppc-embedded@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-embedded
>
>
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next prev parent reply other threads:[~2008-04-29 8:53 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-21 15:15 Virtex4FX12LC hangs in calibrating delay loop Thomas Glanzmann
2008-04-29 8:53 ` wangyanlong [this message]
2008-04-29 15:47 ` Stephen Neuendorffer
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