SPRUIU1C July 2020 – February 2024 DRA821U , DRA821U-Q1
A Channelized firewall is designed to protect modules that have logical channels (Ring Accelerator and so forth, for example). These firewalls operate at the resolution of a channel and have no association with physical addresses. Each channel is defined as a logical control entity.
In case of channelized firewalls, the number of regions are less than or equal to number of logical channels and each typical channel/region is very small memory space (typically in Bytes, like 16 bytes). A channel is owned by one processing entity, hence only 1 Priv-ID slot is provided for each Channelized firewall along with associated permissions.
Figure 3-9 presents Channelized firewall config registers with 1 Priv-ID slot per region.
The Channelized firewall is configured using dedicated VBUSP port to CBASS/Bridges that connects to DMSC private VBUSP interconnect.
For more information about the interconnect firewalls, see Interconnect Firewalls.