[U-Boot] MPC8313 with big sdram

[Liu Dave]

> u-boot-1.1.6.

Suggest you use the latest u-boot as base, due to the u-boot/kernel
interface has much change since 1.1.6.

> my sdram is 512MB, with CS0_BNDS,DDRLAWAR0,DDRLAWBAR0 
> modified, 256MB of
> 512MB sdram can work perfectly.
> 
> Then, I defined CONFIG_VERY_BIG_RAM, 512MB can be recognized, 
> but, I can
> only read and write 256MB, fault occurred when address move 
> across 256MB.
> 
> besides CONFIG_VERY_BIG_RAM, what else should I do to support 
> big sdram?
> Thanks!

Please check the DDR controller configuration according to your board.
Did the ROW/COL address setup correctly?