Hi everybody,

I have created a patch which adds Kconfig and runtime options for both
of these settings.

https://review.coreboot.org/c/coreboot/+/73790

Let me know your opinion.


Felix

On Thu, 2023-03-02 at 11:27 +0100, Michał Żygowski wrote:
> On 1.03.2023 18:58, baptx wrote:
> > For people who use the 12th generation of Intel Core processors,
> > they may want
> > to disable efficient-cores in the BIOS to improve performance
> > (
> > https://www.reddit.com/r/intel/comments/thp7jh/disabling_the_efficie
> > ncy_cores_to_get_performance/ <
> > https://www.reddit.com/r/intel/comments/thp7jh/disabling_the_effici
> > ency_cores_to_get_performance/>), is it supported by coreboot or
> > Dasharo?
> >
> > Some people may also want to disable performance-cores instead to
> > save more
> > battery
> > (
> > https://www.reddit.com/r/overclocking/comments/x0xu1c/can_you_disabl
> > e_performance_cores_to_force_an/ <
> > https://www.reddit.com/r/overclocking/comments/x0xu1c/can_you_disab
> > le_performance_cores_to_force_an/>), is it supported also?
> >
> Intel FSP, which is used to initialize the Intel silicon in coreboot
> is capable
> of disabling E and P cores. It is a matter of telling FSP to do it.
> But I assume
> you expect a runtime option in the firmware setup, so the answer is
> no, neither
> Dasharo nor coreboot supports it at the moment. Currently, the only
> way to
> achieve it is a custom coreboot build.

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