[PATCH] firmware/psci: Add debugfs support to ease debugging

Sudeep Holla sudeep.holla at arm.com
Mon Aug 1 02:59:10 PDT 2022


On Fri, Jul 29, 2022 at 11:45:10AM -0700, Florian Fainelli wrote:
>
> Yes I would agree with both of those points, in fact, I would go one step
> further and add the ability to probe an arbitrary PSCI function ID, since
> deployed firmware typically go beyond the standard PSCI scope and implement
> a variety of custom extensions (at least we do).
>

Technically they must not be PSCI right ? Also I hope they are not using
Arm Architecture/CPU service range of FID and they use SiP/OEM service
range. From what I understand, you need a generic debug FS for all
SMCCC instead of just PSCI in your case. The latter must cover PSCI as
well while the reverse must not happen.

So if we need this beyond PSCI FID range, better you have it as generic
SMCCC debug FS. Thoughts ?

-- 
Regards,
Sudeep



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