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Date: Sun, 19 Sep 2004 11:16:22 +0100 (BST)
From: Ken Moffat <ken@kenmoffat.uklinux.net>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Subject: Re: Problem with 745x errata in 2.6.8
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On Sun, 19 Sep 2004, Benjamin Herrenschmidt wrote:

> On Sun, 2004-09-19 at 02:37, Ken Moffat wrote:
> > On Sat, 18 Sep 2004, Ken Moffat wrote:
> >
> > > On Sat, 18 Sep 2004, Benjamin Herrenschmidt wrote:
> > >
> > > >
> > > > PVR is the Processor Version Register, indicates which CPU you have
> > > >
> > > > Ben.
> > > >
> > >  Thanks, I'd already found that on google.  First attempt to dump min=
e
> > > into a printk is building - don't hold your breathe ;-)
> > >
> >
> >  The PVR is 80010201 so it uses the "7455 others" code.
>
> Hrm... I invite you to read the gazillion errata for this chip rev :(
>

 Are they available online ?  Would I understand them ?

> You should also contact the AmigaOS folks, they might have configured
> something in the northbridge in a way that won't work when the M bit is
> set but there might be a workaround. I suppose their northbridge spec is
> kept behind closed door though, as it is common nowadays :(
>
> Ben.
>
>

 Actually, I think it's kept in a locked cupboard in a room labelled
"beware of the leopard", in a basement at the bottom of some broken
stairs.  FWIW, the option biting me is CPU_FTR_NEED_COHERENT - no real
surprises there.

 I'll have another go at trying to talk to them.  Thanks for your
responses.

Ken
--
 das eine Mal als Trag=F6die, das andere Mal als Farce