Re: [OpenBIOS] Basic Questions

[Fusco, John (GE Healthcare)]

I have a console with an "ok" prompt that I boot with grub. It's an Intel Westville II motherboard - dual Xeon with 7500 chipset.

Here is where I am stuck. The PCI commands that come with openbios do not comply with the standard, so they are largely undocumented. Looking at the source, I can muddle through although I'm new at Forth. Mabye you can help me with the syntax.

Here is the output from lspci on Linux for Westville:
    $ lspci -n
    00:00.0 0600: 8086:254c (rev 01)

So bus 0 device 0, function 0 has a PCI device. If I read config word zero, I expect something like 8086 or 254c, but what I get is always FFFF. Here is the syntax I am using:

0 0 pci-c@ . ff
0 0 pci-w@ . ffff
0 0 pci-l@ . -1

What am I doing wrong?

Thanks,
John

________________________________

From: Asif Haswarey [mailto:[e-mail]] 
    Sent: Wednesday, August 23, 2006 5:24 PM
    To: Fusco, John (GE Healthcare)
    Cc: [e-mail]
    Subject: RE: [OpenBIOS] Basic Questions
    
    
    John,
     
    I do not have an environment that you are persuing, ie. Qemu.
    So you will need to clarify a little more.
    Do you have a running OpenBIOS system such that you get to the
    OpenFirmware console specifically at the "ok" prompt?
     
    -Asif

________________________________

From: Fusco, John (GE Healthcare) [mailto:[e-mail]] 
    Sent: Wednesday, August 23, 2006 11:02 AM
    To: Asif Haswarey
    Cc: [e-mail]
    Subject: RE: [OpenBIOS] Basic Questions
    
    
    Yes, that's essentially what I want. The runiso target in the makefile uses qemu. So that part was easy.
     
    Trying to decipher all the rest of it is where I'm stuck.
     
    John

________________________________

From: Asif Haswarey [mailto:[e-mail]] 
    	Sent: Wednesday, August 23, 2006 12:31 PM
    	To: Fusco, John (GE Healthcare)
    	Subject: RE: [OpenBIOS] Basic Questions
    	
    	
    	John,
    	 
    	Exercising the PCI config space is probably what you are looking to do.
    	Have you actually been able to install OpenBIOS in your Qemu environment/platform?

_____________

Äsif Haswaréy

QLogic Corporation

FCode Driver Development

Phone: [phone]

Fax: [phone]

[e-mail]

________________________________

From: [e-mail] [mailto:[e-mail]] On Behalf Of Fusco, John (GE Healthcare)
    	Sent: Wednesday, August 23, 2006 10:12 AM
    	To: [e-mail]
    	Subject: [OpenBIOS] Basic Questions
    	
    	
    	I am investigating the possiblity of using Openbios as a tool to verify our custom PCI designs.
    	 
    	Specifically what I am interested in is the ability to modify the PCI base address registers and excercise the address decoders on the cards. What I'm after is some basic PCI compliance testing that is hard to do with a full blown OS.
    	 
    	My problem is that I'm having a tough time with the learning curve of openbios. I'm having trouble figuring out how to do some basic things, like query the BARs of a PCI device. I'm using Qemu as a sandbox to play with openbios, but I can't even figure out how print the value of configuration register zero of a particular device!
    	 
    	Can anyone steer me in the right direction? Am I wasting my time, or does it sound like Openbios is going to do what I want.
    	 
    	Thanks,
    	John