Re: [coreboot] VIA EPIA CN100000 is finally Working all.

[Corey Osgood]

Couple questions:

On Feb 3, 2008 10:49 AM, Urbez Santana Roma  wrote:
>
> If you want that your BIOS, runs at the maximum CPU speed, in my
>
> case, the CPU starts
> with 800MHz, and i needed in the bios that works with 1000MHz. You can
> add this if u will:
>
> #define MSR_IA32_PERF_STATUS                    0x00000198
> #define MSR_IA32_PERF_CTL                       0x00000199
> #define MSR_IA32_MISC_ENABLE                    0x000001a0
>    msr_t msr;
>    print_debug("Enabling C7 Power Save\r\n");
>    msr=rdmsr(MSR_IA32_MISC_ENABLE);
>    if (!(msr.lo & 0x10000)) {msr.lo|
>
> 0x10000;

msr.lo |= 0x10000?
> wrmsr(MSR_IA32_MISC_ENABLE,msr);
>        msr=rdmsr(MSR_IA32_PERF_STATUS);
>        //TODO: wait CPU not busy bit 16 & 17 off (STATUS)
>        wrmsr(MSR_IA32_PERF_CTL, 0,  (hi&0xff00)| ((hi>>16)&0x00ff));
>        //Max multi Factor, and minimum voltage
>        //TODO: wait CPU transition bit 16 & 17 off (STATUS)

}

I'm about to test out the rest of the changes.

Thanks,
Corey