Re: AlphaServer 400 vs. Alpha Core 1.0

[Sergey Tikhonov <tsv@xxxxxxxx>]

Jay Estabrook wrote:

> On Thu, Oct 27, 2005 at 12:36:13PM -0400, Jay Estabrook wrote:
>  
>
> > > With the AC2 qboot1 is the same
> > >      
> > Thanks, that saves me some time... :-)
> >    
>
> And indeed, it saved enough... ;-}
>
> Tracked down the problem to patches that went into 2.6.11.
>
> Seems that early rev(s) of the NCR 810 didn't identify themselves as
> PCI class SCSI but as undefined, which leads to them not being
> initialized properly (because of that new code in 2.6.11).
>
> Easiest fix is to borrow the "quirk" fixup for the chip from the
> PPC or IA32 code.
>
> Because it's only certain rev(s) of the 810 chip that exhibit this
> problem, this explains why some folks have seen the problem and many
> others (with later revs) have not.
>
> The fix should go into official kernels at some future time, but the
> main idea is to use this fix in updating either the AC1 or AC2 kernel.
>
> Note again that the current CentOS-4.2 kernel does NOT have the
> problem (it is based on 2.6.9), so if you are desperate... ;-}
Thank you Jay. I'll try to apply proposed patches and release new qboot image.

Regards,

--
Sergey Tikhonov
Solvo Ltd.
tsv@xxxxxxxx