Hard Processor System Technical Reference Manual: Agilex™ 5 SoCs

ID 814346
Date 7/07/2025
Public

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4.4.5. On-Chip RAM Firewall

All accesses to the on-chip RAM (OCRAM) pass through a security firewall, which can be configured to accept or reject non-secure accesses.

The firewall support four configurable regions. Each region's base address is aligned to a 4 KB boundary, and the region size is also a multiple of 4 KB.

Upon reset, only region 0 is enabled. It is configured to allow only secure accesses across the entire OCRAM address space.