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[Qemu-devel] pc-bios/bios.bin - where it comes from?
From: |
Michael Tokarev |
Subject: |
[Qemu-devel] pc-bios/bios.bin - where it comes from? |
Date: |
Fri, 05 Mar 2010 01:46:49 +0300 |
User-agent: |
Mozilla-Thunderbird 2.0.0.22 (X11/20090706) |
Hello.
There are a few bugs filed about an.. interesting
behavour. For example:
http://www.mail-archive.com/address@hidden/msg29834.html
https://bugs.launchpad.net/qemu/+bug/513273
After quite some mix-n-matching, at least on my test machine,
I can say that the issue gets triggered by seabios. When
using pc-bios/bios.bin everything is ok. But when using
any other bios.bin, even downloading seabios-0.5.1.tar.gz
and building it - on a debian lenny system anyway - by
running `make', the problem triggers.
I tried different versions/variations of vgabios.bin
(it's only -vga std which triggers the issue so far),
including 0.6b and 0.6c built from sources, vgabios.bin
from debian packages (0.6b and 0.6c), and the one
included in qemu-0.12.3.tar.gz. And my conclusion
so far is that vgabios.bin has exactly _no_ effect on
the issue.
But when using bios.bin from qemu-kvm-0.12.3.tar.gz,
and _only_ that bios.bin, the problem goes away.
So the question arises: where that pc-bios/bios.bin
comes from into qemu-0.12.3.tar.gz? It is either
built from some other sources (not from seabios-0.5.1),
or built with some extra/different compiler/linker options,
or built using different compiler/linker.
This is partially confirmed on ubuntu as well, but,
as far as I understand, there the behavour is different
with different versions of vgabios.
In case it's not clear: I'm testing qemu-kvm-0.12.3;
bios.bin is the same in qemu-0.12.3 and qemu-kvm-0.12.3.
BTW, is there any reason preventing updating vgabios
to 0.6c version - the latest released one?
Thanks!
/mjt
- [Qemu-devel] pc-bios/bios.bin - where it comes from?,
Michael Tokarev <=