The DRAM register programming aid tools can assist with creating DRAM initialization scripts for various supported memory types. These tools are Excel spread sheet based and self explanatory with a "How to Use" tab. Currently, this tool has been created for i.MX28 and i.MX50.
These are currently being stored on the external imxdev.org wiki site.
See external wiki:
www.imxdev.org/wiki/index.php?title=Board_bring-up_and_DDR_initialization_tools