[coreboot] Super I/O: Winbond LPC Super I/O WPCN381U

Jeremy Moles cubicool at gmail.com
Thu Apr 7 18:07:19 CEST 2011

On Thu, 2011-04-07 at 17:39 +0200, Peter Stuge wrote:
> Jeremy Moles wrote:
> > > To clarify, superiotool has functions internally for writing to
> > > registers in superios,
> ..
> > I will need to find whatever register corresponds to GPIO03 and
> > set just that particular HIGH bit?
> Yes. Look at the data sheet and maybe as a help you can step through
> superiotool as well.
> > (Other keywords in their email were things like "GPIO:0x2" and
> > GPIO:0x18", but I haven't been able to get any additional
> > clarification from them...)
> Superios are easier to program than many other components, and are
> well documented, so you shouldn't have too much trouble. GPIO 3 is
> what you need to know about how the hardware is built.

I do have a document describing the hardware pretty thoroughly, but
I am unfamiliar with the terminology it uses and how I would map that
into something I AM familiar with in Linux.

When you say well-documented: is there a particular document you can
think of offhand?

At any rate, I'm sure I'm close to the edge of how much this list is
willing to tolerate. :) Thanks for the help, hopefully I can make
something out of this...

> //Peter

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