[LinuxBIOS] K8 CAR issue
san at google.com
Wed Oct 19 18:06:22 CEST 2005
I generally always have my HDT connected, but it looks like it was just some
kind of ghost in the machine. I appear to be getting a lot further now and
am going to keep chunking away.
On 10/18/05, Lu, Yinghai <yinghai.lu at amd.com> wrote:
> Any reason for you to use HDT?
> Can you disable the XIP and have a try?
> *From:* linuxbios-bounces at openbios.org [mailto:
> linuxbios-bounces at openbios.org] *On Behalf Of *San Mehat
> *Sent:* Tuesday, October 18, 2005 4:59 PM
> *To:* LinuxBIOS
> *Subject:* [LinuxBIOS] K8 CAR issue
> I've been experimenting with getting the Cache as Ram stuff working with
> my experiments, and have run into a puzzling issue relating to XIP.
> In amd/cache_as_ram.inc, as soon as the writes to MSR 203 completes, my
> system crashes. Using my HDT, it looks like the entire memory image gets all
> buggered up as well.
> The offending segment of code appears to be:
> 0008:FFFF7312 B902020000 MOV ECX,00000202
> 0008:FFFF7317 31D2 XOR EDX,EDX
> 0008:FFFF7319 B80600FEFF MOV EAX,fffe0006
> 0008:FFFF731E 0F30 WRMSR
> 0008:FFFF7320 B903020000 MOV ECX,00000203
> 0008:FFFF7325 BA0F000000 MOV EDX,0000000f
> 0008:FFFF732A B80008FEFF MOV EAX,fffe0800
> 0008:FFFF732F 0F30 WRMSR <--------------- POW...
> In my Config.lb <http://www.google.com/url?sa=D&q=http%3A%2F%2FConfig.lb>,
> XIP options are:
> default XIP_ROM_SIZE=65536
> default XIP_ROM_BASE = ( _ROMBASE + ROM_IMAGE_SIZE - XIP_ROM_SIZE )
> Any ideas YH? ;)
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