On 02/09/2012 02:04 PM, Charles Manning wrote:
On Wednesday 08 February 2012 17:16:10 Bud Miljkovic wrote:
Can someone clue me in how one goes about a NAND bootable u-Boot?
Bud
You can't actually run uboot from NAND per se. The rom boot loader reads the image into ram where it runs.
Based on my experience with omap - which uses a very similar sequence - you need to configure the uboot to run from the desired location in RAM. The resulting uboot.bin must then be mashed in whatever way is appropriate for loading with the rom boot loader and programmed to flash.
On some hardware, the boot rom/logic will only load a small piece from RAM (e.g. 4K). U-Boot can be built with a prepended miniloader (SPL) to fetch the main U-Boot image. The details (and whether this is supported at all) depend on what board you're talking about. There is SPL support for some i.MX chips -- not sure about i.MX53x.
-Scott