Re: [Qemu-discuss] Skip iPXE delay before launching bootloader?

[Jakob Bohm]

On 10/10/2012 7:09 PM, Andrew Pennebaker wrote:
> I'm working on some bootloader assembly code, and it slows down
> my workflow when I have to wait 2 seconds after the iPXE message
> appears in qemu, before it actually launches my bootloader.
>
> Any idea how to skip this delay?
Option 1: Pass the "boot" option for the virtual device that holds
  your bootloader code (probably a virtual floppy or hard drive),
  this should tell the qemu/bochs BIOS to ignore other boot sources
  such as PXE.

Option 2: Start qemu with no virtual network interface, I guess that
  should shut up PXE (assuming your code is not a PXE bootloader).

Option 3: If you are writing a PXE bootloader, speed up your DHCP
  and TFTP servers and the network that lead to them, this is
  usually the thing that takes 2 seconds.

Option 4: Consider a "warm boot" where qemu is not shut down between
  boot attempts, this may reduce the work done by the qemu/bochs
  BIOS.

Option 5: Look in the qemu/bochs BIOS ROM assembly source code and
  comment out the unwanted code in your own copy.


Enjoy
Jakob
--
Jakob Bohm, CIO, Partner, WiseMo A/S. http://www.wisemo.com
Transformervej 29, 2730 Herlev, Denmark. Direct +45 31 13 16 10
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