[SeaBIOS] Problems booting FreeBSD9 under SeaBIOS as CSM

[David Woodhouse]

I'm probably going to have to chase this one down for myself, but before
I do I figured I'd ask if anyone's seen anything similar before, and can
give me some pointers...

When booting FreeBSD 9 under real SeaBIOS, it all works fine. When
SeaBIOS is invoked for a 'legacy' boot under EFI, the FreeBSD bootloader
gets as far as displaying its main screen with the FreeBSD banner and
the ASCII-art dæmon and the options, but then seems to *stop* before
displaying the 'Autoboot in 9 seconds. Press [Space] to pause' message.

The qemu log shows that it's in an endless stream of 

Servicing hardware INT=0x20
 44024: v=20 cr0=00000032 e=0000 i=0 cpl=0 IP=f000:000000000000ffec pc=00000000000fffec SP=0000:0000000000005d9c EAX=0000000000000000
EAX=00000000 EBX=00005dd0 ECX=0000ffea EDX=00000000
ESI=0000c350 EDI=00000000 EBP=00000000 ESP=00005d9c
EIP=0000ffec EFL=00000202 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =d500 000d5000 ffffffff 00cf9300
CS =f000 000f0000 0000ffff 00009a00
SS =0000 00000000 ffffffff 00cf9300
DS =0000 00000000 ffffffff 00cf9300
FS =0000 00000000 ffffffff 00cff300
GS =0000 00000000 ffffffff 00cff300
LDT=0000 00000000 0000ffff 00008200
TR =0038 00005f98 00002067 00008900
GDT=     00009590 0000003f
IDT=     00000000 000003ff
CR0=00000032 CR2=00000000 CR3=7fb36000 CR4=00000648
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 
DR6=00000000ffff0ff0 DR7=0000000000000400
CCS=00000044 CCD=00000000 CCO=EFLAGS  
EFER=0000000000000000
 44025: v=1c cr0=00000032 e=0000 i=1 cpl=0 IP=f000:000000000000f856 pc=00000000000ff856 SP=0000:0000000000005d72 EAX=0000000000000000
EAX=00000000 EBX=00000000 ECX=00000000 EDX=00000000
ESI=00000000 EDI=00000000 EBP=00000000 ESP=00005d72
EIP=0000f856 EFL=00000202 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0000 00000000 ffffffff 00cf9300
CS =f000 000f0000 0000ffff 00009a00
SS =0000 00000000 ffffffff 00cf9300
DS =0000 00000000 ffffffff 00cf9300
FS =0000 00000000 ffffffff 00cff300
GS =0000 00000000 ffffffff 00cff300
LDT=0000 00000000 0000ffff 00008200
TR =0038 00005f98 00002067 00008900
GDT=     00009590 0000003f
IDT=     00000000 000003ff
CR0=00000032 CR2=00000000 CR3=7fb36000 CR4=00000648
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 
DR6=00000000ffff0ff0 DR7=0000000000000400
CCS=00000000 CCD=00000000 CCO=EFLAGS  
EFER=0000000000000000
Servicing hardware INT=0x20

-- 
dwmw2

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