[U-Boot-Users] [PATCH] MPC83xx platform memory access perform ance improved

[Liu Dave-r63238]

> 
> we need to be careful with this since not all 83xx have the ability  
> to do 64bit writes (832x doesn't have FP)
> 
When all of ways of D-cache is locked, actually the dcbz doesn't 
allocate line in D-cache, the following writes will be cache miss, so
dcbf cann't make cache line burst write to memory.

Dave