[U-Boot] [PATCH] powerpc: add support for the Freescale P1022DS reference board

Timur Tabi
2010-05-27T20:11:22Z

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