[coreboot] [RFC] SMM handling and resident coreboot

Stefan Reinauer stepan at coresystems.de
Mon Jul 28 14:18:32 CEST 2008

yhlu wrote:
>> End of RAM. On some chipsets, there also seems to be a mechanism to reserve
>> memory space fore SMM handlers (TSEG)
> so it is less 4g...like normal BIOS.
eh, yes, right. I guess we would need long mode to go beyond 4G.

>>> also for ecc ram, only ram below CONFIG_LB_MEM_TOPK get inited
>> Does this mean all memory has to be initialized? Or is it enough to
>> initialize only the part we're using?
>> I thought to remember ECC memory is scrubbed locally by each CPU on startup?
>> Is this not the case?
> do you mean code from hardware_main() , or other new smm code?

I was referring to coreboot-v2/src/cpu/amd/model_fxx/model_fxx_init.c:
init_ecc_memory() for example.


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