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diff --git a/IntelFrameworkPkg/Include/Protocol/LegacyInterrupt.h b/IntelFrameworkPkg/Include/Protocol/LegacyInterrupt.h
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+++ b/IntelFrameworkPkg/Include/Protocol/LegacyInterrupt.h
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+/** @file
+  This protocol manages the legacy memory regions between 0xc0000 - 0xfffff
+
+  Copyright (c) 2007, Intel Corporation
+  All rights reserved. This program and the accompanying materials
+  are licensed and made available under the terms and conditions of the BSD License
+  which accompanies this distribution.  The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+  Module Name:  LegacyInterrupt.h
+
+  @par Revision Reference:
+  This protocol is defined in Framework for EFI Compatibility Support Module spec
+  Version 0.96
+
+**/
+
+#ifndef _EFI_LEGACY_INTERRUPT_H_
+#define _EFI_LEGACY_INTERRUPT_H_
+
+#define EFI_LEGACY_INTERRUPT_PROTOCOL_GUID \
+  { \
+    0x31ce593d, 0x108a, 0x485d, {0xad, 0xb2, 0x78, 0xf2, 0x1f, 0x29, 0x66, 0xbe } \
+  }
+
+typedef struct _EFI_LEGACY_INTERRUPT_PROTOCOL EFI_LEGACY_INTERRUPT_PROTOCOL;
+
+/**
+  Get the number of PIRQs this hardware supports.
+
+  @param  This                  Protocol instance pointer.
+  @param  NumberPirsq           Number of PIRQs.
+
+  @retval EFI_SUCCESS           Number of PIRQs returned.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_LEGACY_INTERRUPT_GET_NUMBER_PIRQS) (
+  IN EFI_LEGACY_INTERRUPT_PROTOCOL            *This,
+  OUT UINT8                                   *NumberPirqs
+  );
+
+/**
+  Gets the PCI location associated with this protocol.
+
+  @param  This                  Protocol instance pointer.
+  @param  Bus                   PCI Bus
+  @param  Device                PCI Device
+  @param  Function              PCI Function
+
+  @retval EFI_SUCCESS           Bus/Device/Function returned
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_LEGACY_INTERRUPT_GET_LOCATION) (
+  IN EFI_LEGACY_INTERRUPT_PROTOCOL            *This,
+  OUT UINT8                                   *Bus,
+  OUT UINT8                                   *Device,
+  OUT UINT8                                   *Function
+  );
+
+/**
+  Read the PIRQ register and return the data
+
+  @param  This                  Protocol instance pointer.
+  @param  PirqNumber            PIRQ register to read
+  @param  PirqData              Data read
+
+  @retval EFI_SUCCESS           Data was read
+  @retval EFI_INVALID_PARAMETER Invalid PIRQ number
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_LEGACY_INTERRUPT_READ_PIRQ) (
+  IN EFI_LEGACY_INTERRUPT_PROTOCOL           *This,
+  IN  UINT8                                  PirqNumber,
+  OUT UINT8                                  *PirqData
+  );
+
+/**
+  Write the specified PIRQ register with the given data.
+
+  @param  This                  Protocol instance pointer.
+  @param  PirqNumber            PIRQ register to read.
+  @param  PirqData              Data written.
+
+  @retval EFI_SUCCESS           Table pointer returned
+  @retval EFI_INVALID_PARAMETER Invalid PIRQ number
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_LEGACY_INTERRUPT_WRITE_PIRQ) (
+  IN EFI_LEGACY_INTERRUPT_PROTOCOL           *This,
+  IN  UINT8                                  PirqNumber,
+  IN UINT8                                   PirqData
+  );
+
+/**
+  @par Protocol Description:
+  Abstracts the PIRQ programming from the generic EFI Compatibility Support Modules
+
+  @param GetNumberPirqs
+  Gets the number of PIRQs supported.
+
+  @param GetLocation
+  Gets the PCI bus, device, and function that associated with this protocol.
+
+  @param ReadPirq
+  Reads the indicated PIRQ register.
+
+  @param WritePirq
+  Writes to the indicated PIRQ register.
+
+**/
+struct _EFI_LEGACY_INTERRUPT_PROTOCOL {
+  EFI_LEGACY_INTERRUPT_GET_NUMBER_PIRQS GetNumberPirqs;
+  EFI_LEGACY_INTERRUPT_GET_LOCATION     GetLocation;
+  EFI_LEGACY_INTERRUPT_READ_PIRQ        ReadPirq;
+  EFI_LEGACY_INTERRUPT_WRITE_PIRQ       WritePirq;
+};
+
+extern EFI_GUID gEfiLegacyInterruptProtocolGuid;
+
+#endif