• how to enable am335x Monitor debug-mode
    Hi , The monitor debug mode can be configured in DSCR, which is writable via APB interface for am335x. But,  I read the DRAR(MRC p14, 0, <Rd>, c1, c0, 0) and DSAR(MRC p14, 0, <Rd>, c2, c0, 0). Both of...
  • How to use Secure Monitor Call(SMC) and entrance Monitor Mode?
    Hello, experts: My platform has a Cortex-A9 MPCore cpu, It supports trustzone tech. I want to change NSACR.TL bit, but It need in secure state. I want to change non-secure state to secure state...
  • Cortex-A15 MPCore: How to Enable Monitor Debug Mode
    Hi experts, I want to enable monitor debug mode for Cortex-A15 MPCore. I tried modifying DSCR[15] bit but watchpoint event still won't generate exception/abort. Core was in no-debug mode before modifying...
  • The Monitor
    I'm at the beginning of learning the arm architecture and I understand this question might have been answered somewhere in the A.R.M document. But I got confused with this particular question and some...
  • I cannot write the sp register in the monitor mode
    I use a Cortex-A7 board and write start up code. I try to use Security Extension. I use `smc` instruction and make cpu mode monitor mode. In the monitor handler, I tried to changed stack pointer value...