[OpenBIOS] OpenBIOS PowerPC missing open firmware commands

[Alexander von Gluck]

On Mon, 18 Jul 2011 23:39:00 -0500, Alexander von Gluck wrote:
> Just a few things I noticed while hacking away at Haiku on PowerPC:
>
> The following OpenFirmware commands aren't implemented:
>
> erase-screen
> toggle-cursor

It does seem like these are implemented after looking at the sources.
However we receive the following error when they are used:

undefined defer word toggle-cursor
undefined defer word erase-screen

Here is the example usage:
http://dev.haiku-os.org/browser/haiku/trunk/src/system/boot/platform/openfirmware/console.cpp#L214
http://dev.haiku-os.org/browser/haiku/trunk/src/system/boot/platform/openfirmware/console.cpp#L241

(this all works 100% on real hardware)


> The following paths are missing essential information:
>
> cpu node -> clock-frequency
> cpu node -> timebase-frequency
> cpu node -> bus-frequency
>
>
> Example:
>
> cd /
> cd cpus
> cd PowerPC,750 at 0
> .properties

I was a little off in this, the only one *really* missing is the 
bus-frequency.
We can work around the 0 values.

I threw together a patch at the url below to make OpenBIOS a little 
more
OpenFirmware like under qemu:

http://pastebin.com/CkdeEFWL

I'm not sure on how to use the fw_cfg_* portions so I just set it to 0 
for the
moment.

Thanks!
  -- Alex