[OpenBIOS] [PATCH] More complete PowerPC OpenFirmware emulation -- adding bus-frequency

[Tarl Neustaedter]

On 2011-Aug-9 17:13 , Alexander von Gluck wrote:
>
> I can see your argument on blindly supporting it, Haiku checks for it and
> cpu frequency and stops booting if it is missing. I could just change 
> haiku's
> code to not require it.. but:
>
>  * I'd rather have the information then not (even if it is just 0)
>  * the parameter exists on *every* Apple openfirmware implementation
>    (i've verified this on a G3 bronze powerbook, G3 iBook, G4 
> QuickSilver, G5 iMac)
>  * as the parameter exists on all new-world Apple systems, who knows 
> what other
>    operating systems this breaks compatibility with? 

For what it's worth, Sun systems don't (currently) use a "bus-frequency" 
property. We do have a "stick-frequency" property, which relates the 
"stick" register to real-time nanoseconds, but that's specific to the 
sun4v series of platforms.