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

Andreas Färber andreas.faerber at web.de
Tue Aug 9 22:18:47 CEST 2011

Am 09.08.2011 um 11:12 schrieb Mark Cave-Ayland:

> On 08/08/11 16:07, Alexander von Gluck wrote:
>> Below is a quick patch to introduce the bus-frequency field for  
>> each CPU.
>> This exists on every Apple OpenFirmware i've seen and is expected on
>> Haiku OS.
>> The change to config/scripts/switch-arch isn't required but lets
>> you compile openbios using Haiku's PowerPC cross-compiler.
>> Also included is a extra tracing line for troubleshooting MMU issues.
> This all looks sensible to me, however I'd like to leave this to  
> either Alex or Andreas to do the final commit as they the current  
> PPC maintainers.

Am a bit busy ATM and out-of-sync with qemu-devel... The [PATCH] as  
such is inacceptable to me (should've been [RFC] or a series of  
[PATCH]es) and is missing an SoB.

The switch-arch part looked okay, and if you and Blue agree, I'd sign  
off and apply that part - Haiku uses ELF just like Linux.

In fw_cfg.h there appeared to be some unrelated tab-to-whitespace  
changes and the init.c part surely needs matching QEMU support. Like I  
said earlier, I think fw_cfg is the wrong way to go long-term for such  
cosmetic stuff (we'd get a huge influx) but I wouldn't object to it as  
an interim solution if QEMU / Alex G. feel it's okay.
The value is pretty meaningless on QEMU, so we should critically  
question Haiku's reliance upon it rather than blindly supplying it.


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