[SeaBIOS] Problems with coreboot, GRUB payload and SeaBIOS (was: coreboot and `Timeout at i8042_flush:71!`)

[Paul Menzel]

Dear Kevin,

Am Sonntag, den 29.01.2017, 14:18 -0500 schrieb Kevin O'Connor:
> On Sun, Jan 29, 2017 at 10:08:10AM +0100, Paul Menzel wrote:
> > coreboots board status repository has some SeaBIOS warnings, and I
> > believe the keyboard doesn’t work in that case.
> > $ git grep 'Timeout at i8042_flush' origin/master --
> > origin/master:amd/lamar/4.0-9540-gae5ab60/2015-04-30T02:12:19Z/coreboot_console.txt:WARNING - Timeout at i8042_flush:71!
>
> I don't think that warning is a problem - it generally indicates that
> a ps2 port isn't present.  So, I suspect most of these boards lack the
> ps2 port.
>
> [...]
> > I also experience this sometimes on a Lenovo X60, when I load the
> > SeaBIOS ELF file from GRUB with the commands below.
> > > chainloader (cbfsdisk)/img/seabios
> > > boot
> >
> > Every time, the keyboard doesn’t work – on the Lenovo X60 it’s
> > connected over the PS/2 port – the error message `Timeout at
> > i8042_flush:71!` can be seen.
> >
> > Note, that it’s unlikely to be a timing issue, as the keyboard works in
> > the GRUB payload *before*.
> >
> > Any idea, what causes the problem, and is there a way to fix it?
>
> I don't have much help.  The message appears after 16 bytes are read
> from the port and the port still indcates data is available.  I can't
> think of any valid situation where that would occur.
>
> Is the problem reproducible?

I couldn’t reproduce the log message above. I think, I rebuild SeaBIOS
with higher debug level, but I am not sure.

With that, I get a non-working keyboard in SeaBIOS, when loading
SeaBIOS without timeout from GRUB. Then the problem can be reproduced
each time despite having the file `etc/ps2-keyboard-spinup` with 3
seconds in CBFS.

```
i8042 self test failed (got fa not 0x55)
```

Could it be that the keyboard is in an „unclean“ state from GRUB, which
also still probed it?

Thanks,

Paul