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List:       openbios
Subject:    Re: [OpenBIOS] Adding support for more CPUs
From:       Jd Lyons via OpenBIOS <openbios () openbios ! org>
Date:       2018-01-20 10:47:26
Message-ID: 64674FB3-CFF8-454D-AADA-F1CC5C9AD513 () yahoo ! com
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> On Jan 20, 2018, at 5:05 AM, Mark Cave-Ayland <mark.cave-ayland@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@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?




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