[LinuxBIOS] raminit.c

[joe at smittys.pointclark.net]

Quoting Stefan Reinauer <stepan at coresystems.de>:

> * joe at smittys.pointclark.net <joe at smittys.pointclark.net> [070322 00:48]:
>> a) setup the most minimal northbridge memory registry
>> b) detect spd to find memory parimeters
>> c) set the spd parimeters in the northbridge memory registry
>> d) startup memory
>>
>> Is this correct??
>
> a) sounds suspicious. No "minimal" setup, but rather "those registers of
>    the memory controller that don't have to be setup via c.
>
>> The main question I have is how do I know which of the northbridge
>> memory registers need to be setup on initially?? If they are to use
>> their default values to I even need to include them?? Or should I just
>> set them all up??
>
> Heh. :-) That is the tricky part. You have to read the docs, and try to
> understand, and you can compare the registers to those of the legacy
> bios.
>
> Some chipsets have a "bios porting guide", but except for AMD chipsets,
> they are usually hard to get.
>
> Stefan

Ok, that makes sense. I was able to get the all of the memory register  
settings via the legacy bios. So should I just set the ones that are  
not the default values? Also, is there a "bios porting guide" for  
intel chipsets??

Thanks again - Joe
>
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