[U-Boot] SDRAM controller initialization code

Hi,

I'm using Yosemite board (PPC440EP) for my development with U-Boot firmware version 1.3.4.

Where in source code, I can find code regarding 'initializaiton of SDRAM controller'?

Also, code regarding 'initialization of EBC'?

(please be more explanable)

Thanks in advance, Muzammal Ahmed