Carl-Daniel Hailfinger wrote:
On 14.02.2008 17:38, Marc Jones wrote:
CONFIG_XIP_ROM_BASE CONFIG_XIP_ROM_SIZE
XIP_ROM_ BASE and SIZE are AMD K8 and FAM10 specific. It is used to cache the ROM area while doing CAR. In K8/FAM10 the cache is always on to careful use of mtrrs keeps that cache from being flushed. Anyway, I don't understand why stage0_i586.S would be so similar AMD CAR. Is it just for emulation? I think that the emulator will ignore most cache settings and can be cleaned up. There seems to be some history here since v2 has cpu/x86/car/cache_as_ram.inc. Anyone know why?
Intel processors do exist ;-)
This is why I ask. From what I know of Intel CAR recommendations I wouldn't expert it to use CONFIG_XIP_ROM_BASE. I expect that most CPUs will have their own versions of CAR. So, what CPUs use the generic i586?
Marc