Hard Processor System Technical Reference Manual: Agilex™ 5 SoCs

ID 814346
Date 7/19/2024
Public
Document Table of Contents

3.6.3.2.2. Security Model

The Arm* Cortex* -A55 core implements all the exception levels. The EL3 exists only in the secure state and a change from the secure state to the non-secure state is made only by an exception return from EL3. EL2 exists only in non-secure state.

Figure 7. Security Model when EL3 is using AArch64