Maple platform - adding graphics to IBM PIBS firmware

[Benjamin Herrenschmidt]

On Tue, 2006-07-11 at 15:28 +0200, jf simon wrote:
> Hi,
> We have designed a VME CPU card based on IBM Maple platform.
> We've had problems making it work with a PCI/PMC graphic card we've also 
> designed based around the ATI Radeon 7000 (RV100 QY). To solve this we 
> have linux consultants helping us in emulating the ATI video BIOS at the 
> linux kernel level.
> But we would like to modify  the PIBs firmware with simple routines 
> (scroll,..)  to use the graphic screen attached to the ATI as a text 
> (alphanumeric) console. The keyboard would be USB.
> Is this possible even if the video BIOs didn't previously  initialize 
> the ATI graphic chip?

If the BIOS hasn't initialized the chip, you are pretty much out of
luck... The good news is that soft-booting an rv100 with the BIOS works
fine, at least from my previous experiemnts with it.

> I realize this question doesn't re
> ally belong here...but not sure where 
> to ask, sorry about that.
> Thanks a lot
> -jf simon
> 
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