[LinuxBIOS] LB vs Factory BIOS -- more weirdness

Eric Poulsen eric at zyxod.com
Mon May 8 17:23:23 CEST 2006


I originally posted two serial captures from a "good" lb boot, and one 
where it crashes.  I hadn't realized it at the time, but the block of 
hex numbers at the top of each is a dump of the northbridge 
configuration space.  They are identical.  Going on the assumption that 
if the PCI configurations are the same, then the chip must be configured 
correctly, I must assume that the problem lies with the south bridge ... 
Or am I way off?

Unfortunately, LB doesn't dump the south bridge to serial -- I'm working 
on changing that =)

Richard Smith wrote:
>> suggested that there are chipset registers that are reset by the factory
>> BIOS that LB isn't (re)setting correctly, and that LB works well right
>> after using the factory BIOS because those registers hold their values
>> for a while.
> Do a 'lspci -xxx' diff on the north and southbridges beween factory
> and LB and investigate all the differences.
> --
> Richard A. Smith

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