Re: [SeaBIOS] HPET configuration in Seabios

[Jan Kiszka]

On 2011-08-29 13:00, Avi Kivity wrote:
> On 08/29/2011 01:25 PM, Jan Kiszka wrote:
> > > Can't seabios just poke at the hpet itself and see if it exists or not?
> >
> > Would be hard for the BIOS to guess the locations of the blocks unless
> > we define the addresses used by QEMU as something like base + hpet_no *
> > block_size in all cases.
>
> Currently we have a fixed address.  We could do:
>
> if available in fw_cfg:
>       use that (may indicate no hpet)
>   elif fixed address works:
>       use that
>   else
>       no hpet

Currently, we also only have a single HPET block, but that's just
because of some QEMU limitations that will vanish sooner or later. Then
nothing will prevent multiple "-device hpet,base=XXX".

Jan