[SeaBIOS] Proper support for PCI-based option rom loading (was Re: [Qemu-devel] Re: qdev property bug?)

[Kevin O'Connor]

On Tue, Dec 15, 2009 at 10:24:29PM +0100, Sebastian Herbszt wrote:
> Keep loading custom roms (e.g. from -option-rom) with rom_add_file
> starting at 0xc8000.  Modify SeaBIOS to scan the memory range for
> pre-deployed option roms before deploying PCI roms. SeaBIOS will
> find the last pre-deployed rom and have a starting address for
> deploying PCI roms. This will keep ISA option roms working.

Unfortunately, if the SeaBIOS post entry gets called again (eg, on
ctrl+alt+del), it wont know which roms were originally present, and
which roms were deployed by SeaBIOS on the first boot.

-Kevin