bdi2000 + mpc8560ads, very early breakpoints
kylo at veriwave.com
Wed Apr 13 05:21:18 EST 2005
I'm running a bdi2000 (with mpc85xx-gdb f/w 1.03) with a mpc8560ads
target, and I'm trying to set breakpoints early on in linux startup (in
the head_e500.S code that sets up tlb's). I'm setting the breakpoints
from within the bdi telnet interface.
--succesfully hit a breakpoint set up to any instruction <= the address
of the first 'tlbwe'.
--single step (with the bdi "TI" command) past that 'tlbwe' as far as
I've cared to try
--hit a breakpoint once the first 'tlbwe' has executed. If I attempt to
do so, linux startup doesn't proceed, I lose further communication with
the target and the BDI claims "COP Freeze" and I have to reset the target.
Btw, the 'tlbwe' in question marks invalid the first tlb1 entry setup by
u-boot, which pointed at flash address space. Code is running out of
ram at this point.
I'm probably missing something very basic here. Any ideas?
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