Arria V Hard Processor System Technical Reference Manual

ID 683011
Date 12/02/2022
Public
Document Table of Contents

8.3.4.1. Slave Security

The interconnect enforces security through the slave settings. The slave settings are controlled by the address region control registers accessible through the GPV registers. Each L3 and L4 slave has its own security check and programmable security settings. After reset, every slave of the interconnect is set to a secure state (referred to as boot secure). The only accesses allowed to secure slaves are by secure masters.

The GPV can only be accessed by secure masters. The security state of the interconnect is not accessible through the GPV as the security registers are write-only. Any nonsecure accesses to the GPV receive a DECERR response, and no register access is provided. Updates to the security settings through the GPV do not take effect until all transactions to the affected slave have completed.