Intel® Arria® 10 Hard Processor System Technical Reference Manual

ID 683711
Date 1/10/2023
Public

A newer version of this document is available. Customers should click here to go to the newest version.

Document Table of Contents

7.2.2.2.4. SDRAM Firewall

Two SDRAM firewalls are implemented to allow a different security policy depending on the master.

One firewall filters accesses from the MPU and the FPGA-to-SDRAM interface. The other firewall filters accesses from all other masters on the HPS and applies the same security policy to both coherent and non-coherent accesses. Both firewalls are logically and physically split within the interconnect.

The SDRAM Firewall supports a minimum region size of 64 KB. Each master is allowed a different number of firewall regions:

  • The MPU can have up to four firewall regions.
  • The FPGA-to-SDRAM interface can have up to twelve firewall regions.
  • Any HPS bus master can have up to eight firewall regions.