Re: [PATCH] platform/x86: intel_pmc_core: export platform global_reset via sysfs.

[Enrico Weigelt, metux IT consult]

On 01.04.21 23:31, Tomas Winkler wrote:

Hi,

> During PCH manufacturing a global reset has to be induced in order
> for configuration changes take affect upon following platform reset.
> This setting was commonly done by accessing PMC registers via /dev/mem
> but due to security concern /dev/mem access is much restricted, hence
> the reason for exposing this setting via dedicated sysfs interface.
> To prevent post manufacturing abuse the register is protected
> by hardware locking.

could you please define "manufacturing" ? The chip or board ?

Is there any use for this, after the machine left the factory ?


--mtx

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Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
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