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diff --git a/MdeModulePkg/Library/ArmFfaLib/ArmFfaCommon.h b/MdeModulePkg/Library/ArmFfaLib/ArmFfaCommon.h
new file mode 100644
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+++ b/MdeModulePkg/Library/ArmFfaLib/ArmFfaCommon.h
@@ -0,0 +1,52 @@
+/** @file
+  Arm FF-A ns common library Header file
+
+  Copyright (c) 2024, Arm Limited. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+  @par Glossary:
+     - FF-A - Firmware Framework for Arm A-profile
+     - spmc - Secure Partition Manager Core
+     - spmd - Secure Partition Manager Dispatcher
+
+  @par Reference(s):
+     - Arm Firmware Framework for Arm A-Profile [https://developer.arm.com/documentation/den0077/latest]
+
+**/
+
+#ifndef ARM_FFA_COMMON_LIB_H_
+#define ARM_FFA_COMMON_LIB_H_
+
+#include <Library/ArmFfaLib.h>
+
+extern BOOLEAN  gFfaSupported;
+extern UINT16   gPartId;
+
+/**
+  Convert FfArgs to EFI_STATUS.
+
+  @param [in] FfaArgs            Ffa arguments
+
+  @retval EFI_STATUS             return value correspond EFI_STATUS to FfaStatus
+
+**/
+EFI_STATUS
+EFIAPI
+FfaArgsToEfiStatus (
+  IN ARM_FFA_ARGS  *FfaArgs
+  );
+
+/**
+  Common ArmFfaLib Constructor.
+
+  @retval EFI_SUCCESS
+  @retval Others                  Error
+
+**/
+EFI_STATUS
+EFIAPI
+ArmFfaLibCommonInit (
+  IN VOID
+  );
+
+#endif