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diff --git a/DynamicTablesPkg/Library/FdtHwInfoParserLib/Gic/ArmGicMsiFrameParser.h b/DynamicTablesPkg/Library/FdtHwInfoParserLib/Gic/ArmGicMsiFrameParser.h
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index 0000000000..2821a784f7
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+++ b/DynamicTablesPkg/Library/FdtHwInfoParserLib/Gic/ArmGicMsiFrameParser.h
@@ -0,0 +1,50 @@
+/** @file
+  Arm Gic Msi frame Parser.
+
+  Copyright (c) 2021, ARM Limited. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+  @par Reference(s):
+  - linux/Documentation/devicetree/bindings/interrupt-controller/arm,gic.yaml
+  - linux/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.yaml
+**/
+
+#ifndef ARM_GIC_MSI_FRAME_PARSER_H_
+#define ARM_GIC_MSI_FRAME_PARSER_H_
+
+/** CM_ARM_GIC_MSI_FRAME_INFO parser function.
+
+  The following structure is populated:
+  typedef struct CmArmGicMsiFrameInfo {
+    UINT32  GicMsiFrameId;                    // {Populated}
+    UINT64  PhysicalBaseAddress;              // {Populated}
+    UINT32  Flags;                            // {default = 0}
+    UINT16  SPICount;
+    UINT16  SPIBase;
+  } CM_ARM_GIC_MSI_FRAME_INFO;
+
+  A parser parses a Device Tree to populate a specific CmObj type. None,
+  one or many CmObj can be created by the parser.
+  The created CmObj are then handed to the parser's caller through the
+  HW_INFO_ADD_OBJECT interface.
+  This can also be a dispatcher. I.e. a function that not parsing a
+  Device Tree but calling other parsers.
+
+  @param [in]  FdtParserHandle A handle to the parser instance.
+  @param [in]  FdtBranch       When searching for DT node name, restrict
+                               the search to this Device Tree branch.
+
+  @retval EFI_SUCCESS             The function completed successfully.
+  @retval EFI_ABORTED             An error occurred.
+  @retval EFI_INVALID_PARAMETER   Invalid parameter.
+  @retval EFI_NOT_FOUND           Not found.
+  @retval EFI_UNSUPPORTED         Unsupported.
+**/
+EFI_STATUS
+EFIAPI
+ArmGicMsiFrameInfoParser (
+  IN  CONST FDT_HW_INFO_PARSER_HANDLE  FdtParserHandle,
+  IN        INT32                      FdtBranch
+  );
+
+#endif // ARM_GIC_MSI_FRAME_PARSER_H_