[coreboot] suspend/resume in v3

Stefan Reinauer stepan at coresystems.de
Mon Sep 8 17:24:04 CEST 2008


Carl-Daniel Hailfinger wrote:
> On 08.09.2008 14:31, Stefan Reinauer wrote:
>   
>> Rudolf Marek wrote:
>>   
>>     
>>> If needed, writing to SLP register might be traped by SMM, and BIOS
>>> can save some values to NVRAM regs, sometimes found in chipsets
>>> (memory timing etc) to ease the startup. But we dont need that we are
>>> fast anyway.
>>>     
>>>       
>> Some chipsets even require some bits to be stored in nvram as they do
>> not support probing/reading them when coming out of S3.
>>   
>>     
>
> Do these chipsets also support S3-surviving scratch registers we could
> use instead of NVRAM?
>   
No. Not in a sufficient way at least.


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