Hello, experts:
My platform has a Cortex-A9 MPCore CPU, It supports trustzone tech.
I tried to change NSACR.TL bit, but It needs to change in the secure state.
I checked NSACR value in non-secure state and NSACR value that I changed is changed aperiodically.
For example print value;
nsacr : 0x00000000nsacr : 0x00000000nsacr : 0x00000000
....nsacr : 0x00200000nsacr : 0x00200000nsacr : 0x00200000....
Is NSACR.TL changed correctly?
Why NSACR value changed aperiodcially?
Best wishes,
What _is_ your platform? What software runs on the chip? You need to give some more info.