[U-Boot-Users] U-Boot on MPC8280

David Aldrich david.aldrich at t-modus.nec.co.uk
Wed Jan 7 16:24:46 CET 2004

Hi Wolfgang

May I ask one further question re. the BDI2000?  An article on the
internet states:

"You might be wondering why the BDI2000 only works with kernel-mode code
and not user-land application code. The technical details are beyond the
scope of this AppNote. The 10,000 foot answer is that while the BDI2000
can work with the MMU enabled, it can only work with a single continuous
memory map. Kernel-mode code exists in a single continuous memory map,
which is disjoint from all of the user-land process memory maps. As an
example of the usefulness of this tool in production environments, the
PPC porting engineers at Monta Vista Software use the BDI2000
extensively for kernel bring-up and device driver debug"

Is it true that the BDI is not suitable for user app debug?  Is this a
problem in practice?



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