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    Hi: If CPU is in secure state, and calling the none-secure world method. Dose this allowed or it will generat a security fault
  • secure function call from none-secure side thread mode
    In current trusted-firmware-m version, secure functions such as secure storage service functions can only be called from handler mode. But I have a question about the call sequence, when none secure...
  • Security State transitions - Processor Mode
    Edit: CONTROL.nPRIV is actually banked so I modified my question Hi, I have a question regarding S/NS state transitions and PE modes. From what I read in the ARMv8-M ARM there is no restriction...
  • what is non-secure callable and when can use it ?
    what is NSC and when can use it ?
  • How to place FreeRTOS in secure memory and the user tasks in non-secure memory?
    I am porting FreeRTOS with TrustZone on LPC5500, I put FreeRTOS in secure memory, and created several user tasks in non-secure memory, as shown below: But so far, I have not successfully switched...