It's nice to hear you have used SimNow to run LinuxBios on cheetah.

I guess my message title was a bit miss leading, I'm not having problems with SimNow itself.  In Fact I can run the AMI bios, single step thru it and even boot Fedora Core 5 linux on the simulated Serenade board in SimNow.   The trouble is when I try to run the LinuxBios that I compiled, since this serenade board already exists in the LinuxBios configs, I would have thought I could select it(thru buildtarget) and it would work, but I must have missed something in the basic build procedure.

I'll try to ask a couple clear questions: 
*  Are the first few instructions executed after a reset(hard or soft) in the source file s_start.S?
*  Do I need to explicitly do something to configure for VGA initializations, or is that done since I'm using this existing serenade setup?

On 7/6/06, Lu, Yinghai <yinghai.lu@amd.com> wrote:

I have tried LinuxBIOS with Serengeti_cheetah ( rev F Opteron) on SimNow, and it works well.

 

I will try that with Serengeti_leopard later…

 

YH

 

From: linuxbios-bounces@linuxbios.org [mailto:linuxbios-bounces@linuxbios.org] On Behalf Of Dan Mezynski
Sent: Thursday, July 06, 2006 9:12 AM
To: linuxbios@linuxbios.org
Subject: [LinuxBIOS] Problem Using SimNow Simulator

 



I'm trying to get started with LinuxBios by using the AMD SimNow hardware
simulator to run LinuxBios on a Serenade board. Once we have success with
simulations, we will try it on real hardware.  The Serenade board is one
of the standard predefined boards that comes with the simulator. Once I compile
serenade.rom and reference this file as the rom device connected to the
8111(replacing the AMI BIOS file), I reboot but don't get too far into the new
Linuxbios, I expected to see recognizable postcodes, such as 0x13 from
c_start.S then 0x80, 0x39, 0x40 etc from hardwaremain(), but port 80 only toggles
between 00 and 0x10. I try to single step from 0xfffffff0 (or 0xfffbfff0) but
dont see code that looks like c_start.S. Does something come before this?

I must have built serenade.rom improperly: I did the following,
buildtarget amd/serenade
doneloaded filo.elf
edited serenade/Config.lb to refer to the filo.elf as a payload
make

Any ideas would be appreciated.