[coreboot] unexpected exception errors loading vga rom

[Stefan Reinauer]

On 20.04.2009 18:53 Uhr, Joseph Smith wrote:
>
> On Mon, 20 Apr 2009 17:50:00 +0200, Stefan Reinauer <stepan at coresystems.de>
> wrote:
>   
>> On 20.04.2009 17:38 Uhr, ron minnich wrote:
>>     
>>> On Mon, Apr 20, 2009 at 8:27 AM, Joseph Smith <joe at settoplinux.org>
>>>       
>> wrote:
>>     
>>>> Hello,
>>>> I keep getting unexpected exception errors on my IP1000 with builds
>>>>         
>> over
>>     
>>>> the past 6 months or so. The unexpected exception errors are random
>>>>         
>> errors
>>     
>>>> and are different every time, but seem to happen right about the time
>>>>         
>> the
>>     
>>>> vga rom loads. I think it has something to do with x86emu and yabel
>>>>         
>> loading
>>     
>>>> the vga rom. If I change it to boot up with out graphics it boots up
>>>>         
>> every
>>     
>>>> time, no problem. If I enable the vga device (2.0) and allocate vga
>>>>         
>> memory
>>     
>>>> but not load the vga rom it boots up every time no problem. So this
>>>>         
>> tells
>>     
>>>> me it doesn’t like something the rom emulator is doing, right? This
>>>>         
>> is
>>     
>>>> very strange because I do not have this problem with the RM4100… just
>>>>         
>> the
>>     
>>>> IP1000 (brother boards).
>>>>
>>>>         
>>> You could well be tickling a but in either emulator. These are hard to
>>> find. It's handy to have a user-mode wrapper so you can run these
>>> emulators under linux -- much easier to find that way. Is this
>>> possible with YABEL?
>>>       
> Could I try something like vbetool?
>   
>> Not right now, but you can connect to coreboot via gdb over serial,
>> which gives you a user space frontend with single stepping...
>>
>>     
> Do you mean http://www.coreboot.org/Debugging ??
> I tried that, but the errors are different everytime and not always in the
> exact place so it is hard to put a finger on it using this method.
>  
>   
Did you try a backtrace in those cases? What did it say?

Stefan

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