On Sun, Jul 27, 2008 at 5:01 PM, Stefan Reinauer <[EMAIL PROTECTED]> wrote: > yhlu wrote: >> >> On Sun, Jul 27, 2008 at 7:36 AM, Stefan Reinauer <[EMAIL PROTECTED]> >> 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 -- coreboot mailing list [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
