I have a board that is running u-boot based on "U-Boot 2009.08". I am in the process of developing another board that is very similar but want to upgrade the u-boot to "U-Boot 2013.06".
The boards are iMX6DL CPU based with 32 bit DDR3 and console via UART1. These designs are based on the SabreSD reference design.
I am loading the boards serially via USB using the imx_usb utility available from
Using the older design, I can run the old boot loader fine. When I run the new version of u-boot, the board just hangs and I get no output from the console.
I can get the new version of u-boot compiled for the SabreSD board to run on the SaberSD board with no problems.
I have verifed that the DCD's being loaded with the u-boot are identical between the two u-boot versions.
I noticed that the old u-boot loads at a different memory location (0x27080000) than the new image (0x177ff00) but both seem to be within ghte range of the DDR RAM.
I also noticed that the jump address jumps to the first location of the u-boot image, which is the IVT Header. Is this correct? How is the entry point actually specified?
What should I be looking at to determine why my code is going to the weeds?
(Aside from a debugger/JTAG module which I do not have.)
Doug Bailey #