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

Scott Wood wrote:

Passing the actual, known size of RAM (why guess when we know?) as "maxsize" should eliminate the machine check problem[1] -- you'd just be using it as a not particularly exhaustive memory tester. I don't see why it should be mandatory.

The purpose of get_ram_size() is to verify the "known size of RAM". That is, once you think you know how much RAM there is, you ask get_ram_size() to verify that claim. The return value is the true, validated amount of RAM.

It also doesn't handle non-power-of-two sized memory -- don't rely on the value it returns.

Ah, that's a serious limitation.