In message 000501c3fd00$a087d670$9d00a8c0@radionorole you wrote:
MPC8247 is part of a new family of PowerQUICC II processors from Motorola. This new family include MPC8247,MPC8248,MPC8271,MPC8272 which are all derivatives from of the MPC8280 and MPC8260.
Indeed these are derivatives, and not sooo different.
Since I would like to post back patches and add support code for this CPU back to the U-Boot project I was wondering what is best when starting : Add a new directory to cpu, mpc8272 (or something) and copying code from mpc8260 and changing this or add changes with defines in the MPC8260 directory. The MPC8260 and MPC8247 are very similar but there are some changes, configuration registers (HRCW is changed among others (start.S)) and an USB controller etc.
I don't think that differences are so big that a separate CPU directory is justified. Please use the existing 8260 directory.
Best regards,
Wolfgang Denk