I have a board that has 512MB of memory with ECC. I used the function program_ecc found in cpu/ppc4xx/spd_sdram.c It is slow to initialize this 512MB of RAM.

Has some implemented a fastest way to initialize such an amount of memory (DMA or running Uboot from memory). I call program_ecc after the board finds the memory size (DRAM: ...) So I would think I am still running out of flash.