[LinuxBIOS] More MCP55 hacking

Lu, Yinghai yinghai.lu at amd.com
Wed Dec 13 02:06:57 CET 2006

You need to use 64 bit kernel if you enable pref64 in LinuxBIOS.


-----Original Message-----
From: linuxbios-bounces+yinghai.lu=amd.com at linuxbios.org
[mailto:linuxbios-bounces+yinghai.lu=amd.com at linuxbios.org] On Behalf Of
Ed Swierk
Sent: Tuesday, December 12, 2006 4:37 PM
To: LinuxBIOS
Subject: Re: [LinuxBIOS] More MCP55 hacking

On 12/12/06, Lu, Yinghai <yinghai.lu at amd.com> wrote:
> If still has problem
> 1.
> #make the SB HT chain on bus 0, default is not (0)
> #default SB_HT_CHAIN_ON_BUS0=1
> 2.
> Power off your target for a while. You may drive it nuts.

The patch didn't help, but commenting out SB_HT_CHAIN_ON_BUS0 did. Now
the SB is on bus 1 and the devices are getting initialized only once.

Any idea what those "Unable to handle 64-bit address space for bridge
0000:01:03.0" errors are about? The stuff about IO/MEM/PREFETCH
windows being disabled doesn't look good either.

I suppose the first order of business is to get interrupts going,


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