[PATCH] ACPI CMOS region support rev. 5

[Warner Losh]

> On Mar 17, 2015, at 7:02 AM, Anthony Jenkins <Anthony.B.Jenkins at att.net> wrote:
>> \Where else might ATRTC_VERBOSE be set otherwise?
> 
> I'm picturing a (future?) config(5) knob, e.g.
> 
>    device atrtc
>    options ATRTC_VERBOSE=1
> 
> 
> so it can be set at compile time.

Why not just boot verbose? history has shown too many options like
this is hard to use.

>> I still wonder if there isn't a global acpi_loaded_and_running variable
>> so you could avoid even attempting ACPI init calls, perhaps making this
>> not so dependent on ACPI, at least at runtime.
> 
> I haven't (yet) been able to find a compile-time flag that tells me if
> the kernel supports ACPI; I'm /pretty/ sure the ACPI headers I'm
> #include'ing will exist for every build of FreeBSD.

I wouldn’t count on it. However, they may exist for all platforms that
use atrtc.

But it wouldn’t be an issue if you did a separate attachment.

Warner

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