Bringing up Motorola MGT5100

I am working on bringing up Linux on a Motorola MGT5100 board.  It's
core is roughly a 603e, with lots of other devices on the chip.

I am using an Abatron and have a question about really early boot.
When the MMU is first turned and we are executing at 0xC-bazillion the
Abatron can't read the contents of those addresses.  Is this a dark
time when the Abatron isn't expected to be able to read that memory,
or do I have the MMU or Abatron set up wrong?  (I can single step and
put hardware breakpoints up there.)

Thanks,

-kb

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/