• Interrupts from the secure world to the non-secure world.
    Hello experts, I am using SAM L11 (Core is Cortex-M23). I did a simple test of the interrupt. In the case of the handler was the secure world, it worked as I expected. The instruction sequences are...
  • How to write values ​​from secure code to non-secure memory.
    For example, Save the value x held by the secure code in the non-secure memory. next, Access the non-secure memory where the value x will be stored from the non-secure code. I want to do...
  • Does the processor frequency change when switching from secure to non secure domain?
    Hello, I am using a Nuvoton M2351 for my research. I am running into a very weird issue. I am trying to get some portions of FreeRTOS to run inside the secure domain. I am using the EventRecorder...
  • GICv2 initialization for Non-Secure World
    Hi, Recently I am working on porting our Cortex A7 code that used to run in secure world to non-secure world for some reason. I got a problem when it came to GIC initialization. I noticed that in order...
  • How can I declare variable in secure world memory(Trustzone-m)
    I want to create a global array that stores the calculated values ​​in the secure world function. And the array must be in secure world memory. How can I create an array that exists in the secure...