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Support IORT revision 6#1684

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kuqin12 merged 3 commits intomicrosoft:release/202511from
kuqin12:iort_v6
Mar 10, 2026
Merged

Support IORT revision 6#1684
kuqin12 merged 3 commits intomicrosoft:release/202511from
kuqin12:iort_v6

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@kuqin12 kuqin12 commented Mar 6, 2026

Description

Starting from IO Remapping Table rev E.f (IORT revision 6), the SMMU v3 node is revisioned to 5. (https://developer.arm.com/documentation/den0049/ef/?lang=en)

This PR updates the ACPI IORT generator to support IORT revision 6.

  • Impacts functionality?
  • Impacts security?
  • Breaking change?
  • Includes tests?
  • Includes documentation?

How This Was Tested

This was tested on proprietary hardware platform.

Integration Instructions

N/A

IORT rev.6 and SMMUv3 rev. 5

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#### AI description  (iteration 1)
#### PR Classification
This PR implements a new feature by updating the ACPI IORT generator to support IORT revision 6.

#### PR Summary
The pull request updates the IORT generator logic to correctly handle and declare the new IORT revision; it adjusts the SMMUv3 node revision assignment and updates the supported table revision constant.
- `DynamicTablesPkg/Library/Acpi/Arm/AcpiIortLibArm/IortGenerator.c`: Modified the SMMUv3 node logic to add a specific condition for revision 05 and a default branch for setting revision 5.
- `DynamicTablesPkg/Library/Acpi/Arm/AcpiIortLibArm/IortGenerator.c`: Updated the ACPI IORT generator’s supported revision from EFI_ACPI_IO_REMAPPING_TABLE_REVISION_05 to EFI_ACPI_IO_REMAPPING_TABLE_REVISION_06.
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kuqin12 commented Mar 6, 2026

edk2 PR created as tianocore/edk2#12251

@kuqin12 kuqin12 requested review from cfernald, makubacki and os-d March 10, 2026 18:06
@kuqin12 kuqin12 enabled auto-merge (squash) March 10, 2026 18:24
@kuqin12 kuqin12 merged commit 9a680ab into microsoft:release/202511 Mar 10, 2026
50 of 51 checks passed
@kuqin12 kuqin12 deleted the iort_v6 branch March 10, 2026 18:26
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4 participants