> not claiming to understand all of the issues here, but I have some > MV64460 / MPC7448-based systems, and they only boot if > CONFIG_NOT_COHERENT_CACHE=y That is strange... Pegasos uses a Marvell bridge and it works with coherent cache. Do you have some kernel patches in addition to what is in mainstream to make CONFIG_NOT_COHERENT_CACHE work at all on CONFIG_6xx ? At the moment, it doesn't do much ... Ben.