[OpenBIOS] Adding support for more CPUs

[Jd Lyons]

> On Jan 20, 2018, at 5:05 AM, Mark Cave-Ayland <mark.cave-ayland at ilande.co.uk> wrote:
> 
> On 19/01/18 12:26, Jd Lyons via OpenBIOS wrote:
> 
>> As an addition to my post at qemu-ppc, I’d like to add support for a few more cpus to Openbios, so when I get KVM to support -cpu host: openbios will be able to boot from the cpu’s I have.
>> Right now I have a Powerbook6,8 with a 7447a ( PRV 80030105 ) I think this CPU is V1.5.
>> I also have a iBook with a 750fx ( PVR 70000112 ).
>> Soon I will have a Quicksilver with Dual 1Ghz G4’s, and an iBook G4 with a 7447a, not sure of the PVR’s yet.
>> So, I see that I need to edit the init.c, and I noticed we might need some real values from some of the chips.
>> { // XXX find out real values
>>         .iu_version = 0x800c0000,
>>         .name = "PowerPC,74xx",
>>         .icache_size = 0x8000,
>>         .dcache_size = 0x8000,
>>         .icache_sets = 0x80,
>>         .dcache_sets = 0x80,
>>         .icache_block_size = 0x20,
>>         .dcache_block_size = 0x20,
>>         .tlb_sets = 0x40,
>>         .tlb_size = 0x80,
>>         .initfn = cpu_750_init,
>> Mark, how can I get the values needed from my CPU’s?
>> I’m assuming we need the values for the .icach_size etc.
> 
> On a real Mac you can see them in the CPU node in the Open Firmware device tree. This is how it looks in OpenBIOS (should be fairly easy to do the equivalent on a real Mac):
> 
> 
> 0 > dev /cpus  ok
> 0 > ls
> fff5ba80 PowerPC,750 at 0
> ok
> 0 > dev PowerPC,750  ok
> 0 > .properties
> name                      "PowerPC,750"
> device_type               "cpu"
> cpu-version               80301
> d-cache-size              8000
> i-cache-size              8000
> d-cache-sets              80
> i-cache-sets              80
> d-cache-block-size        20
> i-cache-block-size        20
> tlb-sets                  40
> tlb-size                  80
> timebase-frequency        fd4bc0
> clock-frequency           fdad680
> bus-frequency             3ef1480
> state                     "running"
> reservation-granule-size  20
> reg                       00000000
> available                 00004000   07c54000
>                          07e10000   781f0000
> translations              00001000   00003000   00001000   00000000
>                          07c58000   001b8000   07c58000   00000000
>                          fff00000   00100000   07f00000   00000000
> ok
> 
> 
> ATB,
> 
> Mark.

Thanks Mark, what is the way to submit a patch?

Just post it here for review or other?