Add in the 1st version of ECP.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2832 6f19259b-4bc3-4df7-8a09-765794883524

EdkCompatibilityPkg/Foundation/Efi/Protocol/PciRootBridgeIo/PciRootBridgeIo.c

@@ -0,0 +1,32 @@
+/*++
+
+Copyright (c) 2004, 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:
+
+  PciRootBridgeIo.c
+
+Abstract:
+
+  PCI Root Bridge I/O protocol as defined in the EFI 1.1 specification.
+
+  PCI Root Bridge I/O protocol is used by PCI Bus Driver to perform PCI Memory, PCI I/O, 
+  and PCI Configuration cycles on a PCI Root Bridge. It also provides services to perform 
+  defferent types of bus mastering DMA
+
+--*/
+
+#include "EfiSpec.h"
+
+#include EFI_PROTOCOL_DEFINITION (PciRootBridgeIo)
+
+EFI_GUID  gEfiPciRootBridgeIoProtocolGuid = EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_GUID;
+
+EFI_GUID_STRING(&gEfiPciRootBridgeIoProtocolGuid, "PciRootBridgeIo Protocol", "EFI 1.1 Pci Root Bridge IO Protocol");