CPU Multiplier in coreboot

[Oliver Schinagl]

Hi list,

I was just researching the available options to coreboot/seabios and
noticed that it might not be possible to change CPU multiplier/memory
timings. I know coreboot obtains the timings from the SPD but what if
one would want to change these when using coreboot? With the traditional
bios, that always has been one of the 'normal' features. How is this
handled in coreboot?

oliver

[Rudolf Marek]

On 30.8.2011 13:58, Oliver Schinagl wrote:
> Hi list,
>
> I was just researching the available options to coreboot/seabios and
> noticed that it might not be possible to change CPU multiplier/memory
> timings. I know coreboot obtains the timings from the SPD but what if
> one would want to change these when using coreboot? With the traditional
> bios, that always has been one of the 'normal' features. How is this
> handled in coreboot?

Well now most of the stuff is done "auto" approach. But I implemented for one 
board changing memory voltage/ht voltage/base CPU clock. So in fact you are free 
to do what you want but you must implement the missing bits. The memory clocks 
can be changed via CMOS options for example.

If you need more info please let us know.

Thanks
Rudolf