Branch: refs/heads/master
Home: https://github.com/tianocore/edk2
Commit: 5ff99e0dabefea14b04e190c1659f4817fcb7bc0
https://github.com/tianocore/edk2/commit/5ff99e0dabefea14b04e190c1659f4817fcb7bc0
Author: joe <[email protected]>
Date: 2024-08-04 (Sun, 04 Aug 2024)
Changed paths:
M MdePkg/Include/IndustryStandard/IoRemappingTable.h
Log Message:
-----------
MdePkg /IoRemappingTable: Define additional IORT SMMUv3 node flags.
The flag for HTTU override in an SMMUv3 node in the IORT table is
defined in MdePkg/Include/IndustryStandard/IoRemappingTable.h as
a single bit. BIT0 or BIT1. The implementation of this field is
actually two bits, with the following mapings:
0b0000: Hardware update of the Access flag and dirty state are not
supported.
0b0001: Support for hardware update of the Access flag for Block and
Page descriptors.
0b0010: As 0b0001, and adds support for hardware update of the Access
flag for Block and Page descriptors. Hardware update of dirty state is
supported.
Referenced in Arm® System Memory Management Unit Architecture Specification
SMMU architecture version 3:
https://documentation-service.arm.com/static/63d7a2d5e4378a55c5e045b9
Signed-off-by: Aaron Pop <[email protected]>
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