Hey, Fang.
Sorry to reply late.
We are trying to switch dev platform from MQX to Linux in our production. And we tried burning the uboot binary for nand flash provided with ltib to twr MCF54418 board, but it can't boot up. As our engineer mentioned, this twr board could boot up with uboot and linux when we got it.
We have tried building the uboot for nand, it won't boot up either. As our chip vendor won't offer support for MCF54418, I am wonder if your company has the legacy factory uboot binaries, that will help.
Thx.