[coreboot] [PATCH 2/2] AMD boards to use new Power Now infrastructure

Rudolf Marek r.marek at assembler.cz
Mon Mar 2 23:50:15 CET 2009

Myles Watson napsal(a):
> On Thu, Feb 19, 2009 at 1:39 AM, Rudolf Marek <r.marek at assembler.cz> wrote:
>>> And your code shows one processor, the original code shows four
>>> processors (I have one single-core CPU).
>> I choose to generate the code just for cores which exists.
> I have two dual-core CPUs, and code is only generated for two of them.
>  I see the for loop with write_pstates_for_core in powernow_acpi.c.
> Should there be another loop for packages? 

Yes but it needs to read new data from the AP CPU (the MSRs and CPUIDs)
Dont know if we have funcs like cpuid_on_cpu and msr_on_cpu.

> I guess I'm not sure which
> two cores are being found by your algorithm.

Just BSP processor. It needs to be thought how to do that for more CPUs, perhaps 
using funcs like above.


More information about the coreboot mailing list