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Re: Setting power-on time on PowerMac

On Tue, 22 Sep 2020 00:17:51 -0700
Brad Boyer <flar@allandria.com> wrote:

> OK. I have to admit I didn't do a lot of digging. This is probably
> something they added in more recent versions of PMU. None of the other
> messages types listed in the Linux code seem likely. The Darwin code
> appears to have a lot more PMU message types listed (some of them
> marked in the comments as being specific to ancient models like the
> PB145), so probably one of them does this. I don't want to dig into
> the code there, just in case that's a potential license issue. It
> doesn't seem like looking at the header with the list would be an
> issue.

Great. I will see if I can set up a build/test workflow and try to add some kind of interface for this feature.

> If we manage to get it working, we will probably have to also figure
> out how to tell which systems support this feature. The via-pmu
> driver is used on a wide variety of systems, all the way back to
> the earliest PowerBook models that can run Linux (and in fact the
> PMU hardware is present even on the ones that are too old to run
> Linux due to having no MMU like the Portable and PB100, although
> the PMU is attached to the VIA differently on those anyway so the
> driver wouldn't work without some significant changes).

I'm not sure what to do about that.


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