On Sun, Jul 27, 2008 at 5:01 PM, Stefan Reinauer stepan@coresystems.de wrote:
yhlu wrote:
On Sun, Jul 27, 2008 at 7:36 AM, Stefan Reinauer stepan@coresystems.de wrote:
Since we know how big our RAM is when we copy coreboot to RAM, I suggest that we copy coreboot to the end of memory and run it from there. It is a pretty good assumption that no payload will require that space. During memory map creation, we just reserve 256k at the upper end, and we're good.
you mean somewhere below 4g? or below TOM.
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.
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?
YH