Visible to Intel only — GUID: sfo1410068061782
Ixiasoft
Visible to Intel only — GUID: sfo1410068061782
Ixiasoft
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.