[Gumstix-users] Overo: access to "nonsecure privileged" mode

[John W. <joh...@er...>]

How do I execute something in "nonsecure privileged" mode on the Overo?
Specifically, I want to access the CCNT, USEREN, and PMNC registers of
the Cortex-A8.  I know the instructions to access these registers, but
for instance when I try to access the PMNC resister from standard user
mode I just get a message "Illegal instruction".

 

Thank you for your assistance,

 

John