Region 1
To protect the
target firewall
configuration
+ L3 RT
firewall
configuration
intc-006
Public Version
L3 Interconnect
www.ti.com
•
A size
•
Specific access rights, as defined through the MReqInfo qualifiers
•
A priority level, from 0 (lowest) to 3 (highest)
Figure 9-4. L3 Firewall Implementation
9.2.3.3.1.1 Default Region/Region0
Region 0 is the default region of a whole target; it spans the entire target address space.
The default region is always the lowest priority. This region is systematically overlapped when other
regions are set.
The
register is not accessible. Its configuration corresponds to all the possible
addresses for the target, including all of ADDR_SPACE. It is not possible to program multiple
ADDR_SPACE addresses in a normal region.
9.2.3.3.1.2 Normal Regions
Normal regions have identical features.
A given request either maps into a specific protection region or is considered to have hit the default
protection region if no normal region is hit.
The protection regions can only be configured for a memory space that is power-of-two in size and
size-aligned using the SIZE bit field
[7:3] (as listed in
). When the
SIZE bit field
[7:3] is set to 0, the region is disabled.
NOTE:
k denotes the region number. Depending on the target, n varies from 0 to 7.
lists the size encoding for each value set in the SIZE bit field.
2006
Interconnect
SWPU177N – December 2009 – Revised November 2010
Copyright © 2009–2010, Texas Instruments Incorporated
