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RE: Booting top-of-tree bcm47xx as nfs-root with cfe only (no sibyl)

To: Mark E Mason <mason@broadcom.com>
Subject: RE: Booting top-of-tree bcm47xx as nfs-root with cfe only (no sibyl)
From: "Maciej W. Rozycki" <macro@linux-mips.org>
Date: Thu, 27 Nov 2008 11:09:38 +0000 (GMT)
Cc: Andrew Sharp <andy.sharp@onstor.com>, LMO <linux-mips@linux-mips.org>, "mmason@upwardaccess.com" <mmason@upwardaccess.com>
In-reply-to: <BD3F7F1EFBA6D54DB056C4FFA45140080348EC805C@SJEXCHCCR01.corp.ad.broadcom.com>
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References: <BD3F7F1EFBA6D54DB056C4FFA45140080348EC801C@SJEXCHCCR01.corp.ad.broadcom.com> <alpine.LFD.1.10.0811262304510.23566@ftp.linux-mips.org> <BD3F7F1EFBA6D54DB056C4FFA45140080348EC8037@SJEXCHCCR01.corp.ad.broadcom.com> <20081126153115.24dda1dc@ripper.onstor.net> <BD3F7F1EFBA6D54DB056C4FFA45140080348EC805C@SJEXCHCCR01.corp.ad.broadcom.com>
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On Wed, 26 Nov 2008, Mark E Mason wrote:

> Data bus error, epc == 803ef178, ra == 80017030
> Oops[#1]:
> Cpu 0
> $ 0   : 00000000 1000a800 fffd9000 00000001
> $ 4   : 810a6000 fffd9000 810a6f00 fffd9000

 This is a load from 0(a1) which is 0xfffd9000 and which looks suspicious.  
You can investigate code at epc to see why it is happening.

  Maciej

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