[SeaBIOS] SeaBIOS not fully working when compiled on FreeBSD
Roger Pau Monné
roger.pau at citrix.com
Thu Apr 16 17:23:20 CEST 2015
El 16/04/15 a les 15.56, Kevin O'Connor ha escrit:
> On Thu, Apr 16, 2015 at 01:46:41PM +0200, Roger Pau Monné wrote:
>> I've tried this, the function is handle_15c0. This happens quite late
>> in the boot process, the FreeBSD code that triggers this issue is at:
> Is it possible you are running into:
Might be... I'm not familiar with this code at all, but I will try to
see if I can figure out what's going on.
> If freebsd is using x86emu to interpret the bios, then I'm not
> surprised it is having problems. In a previous mail, you indicated a
> freebsd compiled seabios caused crashes under Linux - can you confirm
> it crashes on non-freebsd guests (ie, linux, windows, dos, etc)?
I've tried booting Ubuntu using the _broken_ SeaBIOS, and it seems to
work fine, I can see calls to handle_15c0 succeeding:
(d10) enter handle_15c0:
(d10) a=0000c000 b=00000000 c=00000000 d=00000000 ds=1000 es=1000 ss=df80
(d10) si=00000000 di=00000000 bp=00000000 sp=0000f9f6 cs=1000 ip=02fd f=0003
So it seems like the problem is only triggered when booting FreeBSD
guests with this specific SeaBIOS build.
More information about the SeaBIOS