Hi, all
I have 2 question want to ask you.
1. I don't seem to be able to enable the performance counters on
my beagleboard-xM, and I'm certain that there's an obvious step that
I'm missing. The cycle counter works just fine, but the 4 performance
counter registers only ever return 0. When I read from any of the
setup registers like the PMNC etc they seem to have the right values,
or at least the values that I'm putting in them. How can I enable the
DBGEN bit?
2. I want to access the Cache Size Identification Registers, but
it is found that my board runs on user mode. How can I do to change
the mode to privileged modes?
Anyone can help me?