[U-Boot] [PATCH] powerpc: add support for the Freescale P1022DS reference board
Timur Tabi
timur at freescale.com
Thu May 27 22:11:22 CEST 2010
Wolfgang Denk wrote:
>> Ah, that's a serious limitation.
>
> No, it is not. Testing is done per bank.
Ok, I get it now. I'm supposed to call get_ram_size() on each DIMM I
locate. That's going to be complicated because we don't have any TLBs set
up when we do that.
And what if we have a 4GB DIMM? Because virtual addresses are still
32-bits, we would need to change get_ram_size() to modify a temporary TLB
while it's reading/writing memory. So we'd need to have an e300 version of
get_ram_size(), an e500 version, an e600 version, and so on.
So I have a question: are you still going to require me to use
get_ram_size() in my P1022DS board patch?
--
Timur Tabi
Linux kernel developer at Freescale
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