Does anybody know the about the pre programmed code in imx28 onchi ROM. I am basically looking for the code which reads SD card content. I am planning to have SD card slot in one of the boards we are developing based on imx28 processor. I want to put boot file, image files and language files like things there.
You are able to boot from the SD card using the on-chip ROM. That is supported and also used on the i.MX28EVK. No problems there.
You can find more information on the ROM and boot process in i.MX28 Reference manual (Chapter 12).