We are using develop automobile product based iMX6Q sabresd board，we change the DDR with 2G size.
I have found some documents about DDR in community, it seems that I have to comiple MFG tool firmware for my board.
Related document, tood and source code:
There are desciptions about build mfgtool firmware in user guide section 3.9, but I found that uboot source code will only be downloaded when execute the command:
$ ./ltib --profile config/platform/imx/updater.profile --preconfig config/platform/imx/imx6q_updater.cf --continue --batch
and uboot source code will be removed after the command complete, I have no chance to modify the uboot source code.
So how to modify the uboot source code for mfg firmware and rebuild it?,
The uboot for MFG tool firmware is not same as normal uboot that will be flashed to board, and the compile method is also differnet.
Have you build uboot as MFG tool firmware with LTIB?