[SeaBIOS] RFC: Add support for virt machine to Seabios

Gerd Hoffmann kraxel at redhat.com
Fri Nov 30 14:48:00 CET 2018

On Thu, Nov 29, 2018 at 05:37:41PM +0000, Rob Bradford wrote:
> The virt machine in the NEMU project has the ambition to be a platform
> that has no emulated legacy hardware. This patch series enables support
> for that machine type in Seabios.

What exactly does "no legacy hardware" mean?  Does that include lpc
devices such as pit and pic?

What will seabios use as time source with -M virt?
Seems there is no pmtimer ...

> The impact that this has for a Seabios port is that the CMOS is not
> available to query details of CPUs or memory configuration; instead this
> patch series modifies the code that queries those details to prefer
> those from QEMU FW CFG over CMOS.

Doing that makes sense anyway, I'd say these three patches can be
merged.  The other two should wait until the qemu patches are merged,
to be sure the pci ids are the final ones.


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