Like the fact that CFG_DEFAULT_IMMR definition in MPC8260ADS.h will bring you nasty kernel crashes the first time you want to boot your Linux kernel.

Like the fact that there is seems to be need for a proprietary version of jffs2_part_info() (because of a broken flash layout?)

Ahh... All those fun things I had to fix when I made the 8266ADS port :) (except I never used jffs2)