Re: [Qemu-devel] EFI BIOS on QEMU

[Stefan Weil <Stefan.Weil@weilnetz.de>]

Rob Landley schrieb:
> On Monday 07 January 2008 14:19:27 Stefan Weil wrote:
>> Hi,
>>
>> I just wanted to run QEMU CVS with EFI BIOS:
>>
>> i386-softmmu/qemu -snapshot -L efi-bios -hda efi-bios/efi.disk
>> linux.img -net nic,model=i82551 -net user
>>
>> i82551 is part of the E100 emulator (eepro100.c).
>>
>> It does not work - no output on serial console nor VGA screen.
> You tried ctrl-alt-2 to switch from vga to serial console? (Wild guess...)
>
> Where did this bios come from?
> ...
> Could you tell us more about what exactly you're trying to do?
>
> Rob

Hi Rob,

thank you for your answer. I'm sorry that it took some time until I could
come back to this topic. Here is more information on what I was trying to do
(which still does not work).

I heared from Tristan's mail that EFI BIOS network functions only support
eepro100 hardware. Well, I wrote the eepro100 emulation for QEMU, so
I wanted to see this working.

So, I compiled i386-softmmu/qemu from QEMU svn trunk, got
http://fabrice.bellard.free.fr/qemu/linux-0.2.img.bz2 and
http://fabrice.bellard.free.fr/qemu/efi-bios.tar.bz2, unpacked both
files, and finally had this directory:

$ ls -l efi-bios/
insgesamt 24712
-rw-r--r-- 1 stefan stefan  1048576  4. Mär 2007  bios.bin
-rw-r--r-- 1 stefan stefan  3145728  4. Mär 2007  efi.disk
-rw-r--r-- 1 stefan stefan 20971520 26. Apr 16:47 linux-0.2.img
-rw-r--r-- 1 stefan stefan      923  4. Mär 2007  README
-rw-r--r-- 1 stefan stefan    35328 26. Apr 13:18 vgabios-cirrus.bin

vgabios-cirrus.bin is a copy from qemu/trunk/pc-bios.

Now, I started this command:

i386-softmmu/qemu -snapshot -hda efi-bios/efi.disk -hdb 
efi-bios/linux-0.2.img -L efi-bios

Result: no output in VGA console, no output (beside serial0 console) in 
serial console.
Of course I did not try ctrl-alt-2 to switch to the serial console (this 
selects the monitor
console), but ctrl-alt-3.

Obviously, some earlier CVS revisions had worked. So I started with QEMU 
CVS of
2007-03, and it worked! Up to now, I could narrow the change from 
working to no
longer working to the time interval from 2007-10-07 to 2007-10-13.

Stefan