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diff --git a/EmbeddedPkg/Include/Protocol/EmbeddedDevice.h b/EmbeddedPkg/Include/Protocol/EmbeddedDevice.h
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+++ b/EmbeddedPkg/Include/Protocol/EmbeddedDevice.h
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+/** @file
+  Deal with devices that just exist in memory space.
+  
+  To follow the EFI driver model you need a root handle to start with. An
+  EFI driver will have a driver binding protocol (Supported, Start, Stop) 
+  that is used to layer on top of a handle via a gBS->ConnectController. 
+  The first handle has to just be in the system to make that work. For
+  PCI it is a PCI Root Bridge IO protocol that provides the root. 
+  
+  On an embedded system with MMIO device we need a handle to just 
+  show up. That handle will have this protocol and a device path 
+  protocol on it. 
+  
+  For an ethernet device the device path must contain a MAC address device path
+  node.
+
+  Copyright (c) 2008-2009 Apple Inc. All rights reserved.<BR>
+
+  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.
+
+**/
+
+#ifndef __EMBEDDED_DEVICE_PROTOCOL_H__
+#define __EMBEDDED_DEVICE_PROTOCOL_H__
+
+
+//
+// Protocol GUID
+//
+// BF4B9D10-13EC-43dd-8880-E90B718F27DE
+
+#define EMBEDDED_DEVICE_PROTOCOL_GUID \
+  { 0xbf4b9d10, 0x13ec, 0x43dd, { 0x88, 0x80, 0xe9, 0xb, 0x71, 0x8f, 0x27, 0xde } }
+
+
+
+typedef struct {
+  UINT16          VendorId;
+  UINT16          DeviceId;
+  UINT16          RevisionId;
+  UINT16          SubsystemId;
+  UINT16          SubsystemVendorId;
+  UINT8           ClassCode[3];
+  UINT8           HeaderSize;
+  UINTN           BaseAddress;
+} EMBEDDED_DEVICE_PROTOCOL;
+
+extern EFI_GUID gEmbeddedDeviceGuid;
+
+#endif
+
+