Re: [LinuxBIOS] Problem Using SimNow Simulator

[Lu, Yinghai]

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: [e-mail]
[mailto:[e-mail]] On Behalf Of Dan Mezynski
Sent: Thursday, July 06, 2006 9:12 AM
To: [e-mail]
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.

[LinuxBIOS] Problem Using SimNow Simulator

[Dan Mezynski]

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  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:* [e-mail] [mailto:
> [e-mail]] *On Behalf Of *Dan Mezynski
> *Sent:* Thursday, July 06, 2006 9:12 AM
> *To:* [e-mail]
> *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.