Re: [SeaBIOS] [PATCH v4 4/5] acpi: load and link tables through romfile loader

[Gerd Hoffmann]

On Mi, 2013-09-25 at 11:17 +0300, Michael S. Tsirkin wrote:
> On Wed, Sep 25, 2013 at 09:52:53AM +0200, Gerd Hoffmann wrote:
> > Hi,
> > > I think we want an option to generate small bios
> > > for QEMU 1.6 and back.
> >
> > Isn't disabling xhci enougth to bring it below 128k?
> >
> > cheers,
> >   Gerd
>
> For now yes, but we'll add more code in the future.
> So I propose a new flag QEMU_LEGACY that disables all new features
> automatically.
> When it's off, this will also let us drop some legacy code thinkably.

I'd rather deal with that in qemu, i.e. fill the needed stuff into
roms/config.seabios-128k and roms/config.seabios-256k.  We'll need those
anyway, and instead of placing CONFIG_QEMU_LEGACY={y,n} there we can
equally well set the options directly.

cheers,
  Gerd