[coreboot] SeaBIOS debug output

[Myles Watson]

On Tue, Jul 8, 2008 at 7:41 PM, Kevin O'Connor <kevin at koconnor.net> wrote:
> Hi,
>
> On Tue, Jul 08, 2008 at 03:26:45PM -0600, Myles Watson wrote:
>> When I increase the debug level in SeaBIOS, I see the enter handle_10
>> messages in hardware, but not in qemu.  Do you see that as well?
>
> Okay - if you're seeing handle_10 messages then this means the vga
> bios did not init properly.  (Normally, the vga bios takes over int
> 0x10.)
>
> Did you have coreboot init the vga option rom first?  If so, you
> probably want to disable that.

That lets me get farther, which begs the question why it's not
reentrant.  Does your code register your handlers over the existing
ones?  Should it?

I'm concerned that in a payload chooser you'll want to have graphical
output to allow the user to choose SeaBIOS.  If you can't run the VGA
BIOS first ... that seems like a problem.

Now I can boot the Linux CDs and here's the trace from XP.  It gets to
the "Setup is inspecting your computer's hardware configuration..."
and hangs.  I was surprised at the "sendmouse: keyboard input buffer
full" message, because I didn't press any keys.

One step closer...

Thanks,
Myles

sectors=296508
579MB medium detected
await_ide: (TIMEOUT,BSY,!BSY,!BSY_DRQ,!BSY_!DRQ,!BSY_RDY) 3 time= 32
timeout= 32000
await_ide: (TIMEOUT,BSY,!BSY,!BSY_DRQ,!BSY_!DRQ,!BSY_RDY) 3 time= 64
timeout= 32000
Booting from 00000000:00007c00
await_ide: (TIMEOUT,BSY,!BSY,!BSY_DRQ,!BSY_!DRQ,!BSY_RDY) 3 time= 32
timeout= 32000
await_ide: (TIMEOUT,BSY,!BSY,!BSY_DRQ,!BSY_!DRQ,!BSY_RDY) 3 time= 32
timeout= 32000
await_ide: (TIMEOUT,BSY,!BSY,!BSY_DRQ,!BSY_!DRQ,!BSY_RDY) 3 time= 32
timeout= 32000
await_ide: (TIMEOUT,BSY,!BSY,!BSY_DRQ,!BSY_!DRQ,!BSY_RDY) 3 time= 64
timeout= 32000
enter handle_10: a=00002000 b=00000000 c=00000000 d=00020000
si=00000000 di=000014ea
  ds=000022f3 es=000022f3 ip=000016dc cs=0000c000 f=00000216 r=000014a6
await_ide: (TIMEOUT,BSY,!BSY,!BSY_DRQ,!BSY_!DRQ,!BSY_RDY) 3 time= 32
timeout= 32000
await_ide: (TIMEOUT,BSY,!BSY,!BSY_DRQ,!BSY_!DRQ,!BSY_RDY) 3 time= 64
timeout= 32000
await_ide: (TIMEOUT,BSY,!BSY,!BSY_DRQ,!BSY_!DRQ,!BSY_RDY) 3 time= 32
timeout= 32000
fail handle_1ab10e: a=4153b10e b=00000000 c=00000000 d=20491a49
si=00000000 di=00000d34
  ds=0000f000 es=00001a49 ip=000077dd cs=00001000 f=00000246 r=00000cea
fail get_device: a=0000153f b=0000000e c=00000002 d=00040082
si=0000146a di=00000000
  ds=00001a49 es=000051da ip=00005dd4 cs=00001000 f=00000216 r=00000d0e
enter handle_11: a=00000000 b=0000000c c=00000040 d=00040000
si=00001338 di=00000000
  ds=00001a49 es=00000040 ip=0000412e cs=00001000 f=00000246 r=00000d06
sendmouse: keyboard input buffer full