[SeaBIOS] [RFC PATCH] Add support for Intel Quark UART.

[David Woodhouse]

On Mon, 2014-05-19 at 13:42 -0400, Kevin O'Connor wrote:
> I don't see any reference to "int 15h, ax=0xd042" as a standard.  So,
> maybe the author of the above text also wrote their own EFI module
> which used that magic value?

Well, the INT 15h call would still be on the BIOS side; that doesn't
sound like an EFI thing at all. Perhaps that's a special-case hack to
make their platform *trigger* the SMM entry, which then gets handled by
the EFI code?

> > Known Bugs
> > ----------
> > With some versions of DOS [...]
> 
> With that predicate, I'm sure any conclusion is true.

True. I suppose the question is whether it's true of any versions of DOS
that we *care* about. Or other operating systems that we might want to
use on Quark, I suppose. Your response seems to suggest not.

I just didn't want to design myself into a corner where I'd *never* be
able to fix this "known bug"?

-- 
dwmw2

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