RE: [LinuxBIOS] K8 CAR issue

[Lu, Yinghai]

Any reason for you to use HDT?

Can you disable the XIP and have a try?

YH

________________________________

From: [e-mail]
[mailto:[e-mail]] On Behalf Of San Mehat
Sent: Tuesday, October 18, 2005 4:59 PM
To: LinuxBIOS
Subject: [LinuxBIOS] K8 CAR issue

Greetings,

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, XIP options are:

default XIP_ROM_SIZE=65536
default XIP_ROM_BASE = ( _ROMBASE + ROM_IMAGE_SIZE - XIP_ROM_SIZE )

Any ideas YH? ;)

thanks

-san

[LinuxBIOS] K8 CAR issue

[San Mehat]

Yinghai,

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.

Thanks

-San

On 10/18/05, Lu, Yinghai  wrote:
> Any reason for you to use HDT?
>
> Can you disable the XIP and have a try?
>
> YH
>
> *From:* [e-mail] [mailto:
> [e-mail]] *On Behalf Of *San Mehat
> *Sent:* Tuesday, October 18, 2005 4:59 PM
> *To:* LinuxBIOS
> *Subject:* [LinuxBIOS] K8 CAR issue
>
> Greetings,
>
> 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? ;)
>
> thanks
>
> -san