Re: [Qemu-devel] Re: PC machine types switched to SeaBIOS/gPXE

[Beth Kon <eak@us.ibm.com>]

Jan Kiszka wrote:
> Stefan Weil wrote:
>   
>> Anthony Liguori schrieb:
>>     
>>> Jan Kiszka wrote:
>>>       
>>>> Anthony Liguori wrote:
>>>>  
>>>>         
>>>>> Hi,
>>>>>
>>>>> I just wanted to let everyone know that I've switched the PC machine
>>>>> type to SeaBIOS and gPXE.  SeaBIOS is a port of the Bochs BIOS to GCC,
>>>>> by Kevin O'Conner, along with quite a lot of clean up and new
>>>>> feature work.
>>>>>
>>>>> gPXE is the new development tree of etherboot which is now
>>>>> deprecated. We've done a lot of testing of and while there are a few
>>>>> outstanding
>>>>> issues, almost everything seems to be working okay.
>>>>>
>>>>> Some known issues:
>>>>> o e1000 pxe booting doesn't seem to work
>>>>> o gPXE does not like the slirp tftp server
>>>>>     
>>>>>           
>>>> Can't confirm, works nicely here with default settings (e1000).
>>>>   
>>>>         
>>> Interesting.  I'll have to look again.
>>>       
>> Hi,
>>
>> it loads the ROM, but ROM and e1000 don't match.
>>     
>
> But they work together if you do not specify '-boot n' and go via the
> command prompt instead.
>
>   
>> I tested with a fresh build.
>>
>> Jan, did you check that qemu uses the correct bios path?
>> Maybe -L <dir> was missing.
>>     
>
> Yes, it's correct and -L makes no difference.
>
> Jan
>
>   
Serendipity allowed us to find this really easily, thanks to some old 
builds lying around...

The following Seabios commit breaks gpxe boot with e1000:

commit a5826b5ad482f44d293387dc7513e5e98802a54e
Author: Kevin O'Connor <kevin@koconnor.net>
Date:   Sat Oct 24 17:57:29 2009 -0400

    Add simple cooperative threading scheme to allow parallel hw init.
   
    Enable system for running hardware initialization in parallel.
    The yield() call can now round-robin between "threads".
    Rework ata controller init to use a thread per controller.
    Make sure internal drives are registered in a defined order.
    Run keyboard initialization in a thread.
    Rework usb init to use a thread per controller.