[PATCH v2 1/2] MdePkg/IndustryStandard: add definitions for ACPI APMT

["Jeff Brasen" <jbrasen@nvidia.com>]

This adds #defines and struct typedefs for the various node types in
the  ACPI Arm Performance Monitoring Unit (APMT) table.

Signed-off-by: Jeff Brasen <jbrasen@nvidia.com>
---
 MdePkg/Include/IndustryStandard/Acpi64.h      |  5 ++
 .../ArmPerformanceMonitoringUnitTable.h       | 69 +++++++++++++++++++
 2 files changed, 74 insertions(+)
 create mode 100644 MdePkg/Include/IndustryStandard/ArmPerformanceMonitoringUnitTable.h

diff --git a/MdePkg/Include/IndustryStandard/Acpi64.h b/MdePkg/Include/IndustryStandard/Acpi64.h
index fe5ebfac2b..575ca0430c 100644
--- a/MdePkg/Include/IndustryStandard/Acpi64.h
+++ b/MdePkg/Include/IndustryStandard/Acpi64.h
@@ -2847,6 +2847,11 @@ typedef struct {
 ///
 #define EFI_ACPI_6_4_MULTIPLE_APIC_DESCRIPTION_TABLE_SIGNATURE  SIGNATURE_32('A', 'P', 'I', 'C')
 
+///
+/// "APMT" Arm Performance Monitoring Unit Table
+///
+#define EFI_ACPI_6_4_ARM_PERFORMANCE_MONITORING_UNIT_TABLE_SIGNATURE  SIGNATURE_32('A', 'P', 'M', 'T')
+
 ///
 /// "BERT" Boot Error Record Table
 ///
diff --git a/MdePkg/Include/IndustryStandard/ArmPerformanceMonitoringUnitTable.h b/MdePkg/Include/IndustryStandard/ArmPerformanceMonitoringUnitTable.h
new file mode 100644
index 0000000000..fe7084cffd
--- /dev/null
+++ b/MdePkg/Include/IndustryStandard/ArmPerformanceMonitoringUnitTable.h
@@ -0,0 +1,69 @@
+/** @file
+  ACPI Arm Performance Monitoring Unit (APMT) table
+  as specified in ARM spec DEN0117
+
+  Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
+  Copyright (c) 2022, ARM Limited. All rights reserved.
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#ifndef ARM_PERFORMANCE_MONITORING_UNIT_TABLE_H_
+#define ARM_PERFORMANCE_MONITORING_UNIT_TABLE_H_
+
+#include <IndustryStandard/Acpi.h>
+
+#pragma pack(1)
+
+///
+/// Arm Performance Monitoring Unit (APMT) tabl
+///
+typedef struct {
+  EFI_ACPI_DESCRIPTION_HEADER    Header;
+} EFI_ACPI_ARM_PERFORMANCE_MONITORING_UNIT_TABLE_HEADER;
+
+///
+/// APMT Revision (as defined in DEN0117.)
+///
+#define EFI_ACPI_ARM_PERFORMANCE_MONITORING_UNIT_TABLE_REVISION  0x00
+
+///
+/// Arm PMU Node Structure
+///
+
+// Node Flags
+#define EFI_ACPI_APMT_DUAL_PAGE_EXTENSION_SUPPORTED          BIT0
+#define EFI_ACPI_APMT_PROCESSOR_AFFINITY_TYPE_CONTAINER      BIT1
+#define EFI_ACPI_APMT_PROCESSOR_AFFINITY_TYPE_PROCESSOR      0 // BIT 1
+#define EFI_ACPI_APMT_64BIT_SINGLE_COPY_ATOMICITY_SUPPORTED  BIT2
+
+// Interrupt Flags
+#define EFI_ACPI_APMT_INTERRUPT_MODE_EDGE_TRIGGERED   BIT0
+#define EFI_ACPI_APMT_INTERRUPT_MODE_LEVEL_TRIGGERED  0 // BIT 0
+#define EFI_ACPI_APMT_INTERRUPT_TYPE_WIRED            0 // BIT 1
+
+// Node Type
+#define EFI_ACPI_APMT_NODE_TYPE_MEMORY_CONTROLLER  0x00
+#define EFI_ACPI_APMT_NODE_TYPE_SMMU               0x01
+#define EFI_ACPI_APMT_NODE_TYPE_PCIE_ROOT_COMPLEX  0x02
+#define EFI_ACPI_APMT_NODE_TYPE_ACPI_DEVICE        0x03
+#define EFI_ACPI_APMT_NODE_TYPE_CPU_CACHE          0x04
+
+typedef struct {
+  UINT16    Length;
+  UINT8     NodeFlags;
+  UINT8     NodeType;
+  UINT32    Identifier;
+  UINT64    NodeInstancePrimary;
+  UINT32    NodeInstanceSecondary;
+  UINT64    BaseAddress0;
+  UINT64    BaseAddress1;
+  UINT32    OverflowInterrupt;
+  UINT32    Reserved1;
+  UINT32    OverflowInterruptFlags;
+  UINT32    ProcessorAffinity;
+  UINT32    ImplementationId;
+} EFI_ACPI_ARM_PERFORMANCE_MONITORING_UNIT_NODE;
+
+#pragma pack()
+
+#endif
-- 
2.25.1