Re: [Qemu-devel] OVMF, SeaBIOS & non-CSM based legacy boot

[Stefan Hajnoczi]

On Mon, Mar 21, 2011 at 6:27 PM, Anthony Liguori <address@hidden> wrote:
> On 03/21/2011 01:14 PM, Jordan Justen wrote:
>>
>> This weekend I spent some time working on loading SeaBIOS from OVMF to
>> start a legacy boot.  I was able to get x86&  x86-64 Linux to legacy
>> boot using this method.
>>
>> Unfortunately, (I think) it is not nearly as nice a having a true CSM.
>>  Basically, you have to decide at some point in the OVMF boot that you
>> want to legacy boot, and once you start SeaBIOS running, OVMF/UEFI
>
> Interesting.  How much time does OVMF add to the total boot time when taking
> this approach?
>
>> will never be in the picture again (until system reset).
>>
>> Contrast this to using a CSM where you can:
>> * Load a legacy option ROM (vbios, or disk rom),
>>   and use it during a UEFI boot
>
> Is there gPXE for UEFI yet?

I have never tried it myself, but I think it should work.  CCed
Michael Brown to check.

Stefan