[U-Boot] generic nand_load.S for mx31

Hi,

There is a file "cpu/arm1136/mx31/nand_load.S" which performs some startup functions for Copy image from flash to SDRAM etc..It does not reinitialize the DDR though.

Although i haven't dugged up the details yet, could someone tell me what is the difference between nand_boot.c and nand_load.S or the assembly code is just a helper for the nand_boot api's.

Thanks, Alfred.