PI 1.1 SMM Feature Check-in

1. Add SmmServicesTableLib library class/instance.
2. Add SmmIoLibCpuIo/SmmPciLibPciRootBridgeIo library instance.
3. Update some library INF to support SMM_CORE module type.
4. Update dec/dsc to include new modules.


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9590 6f19259b-4bc3-4df7-8a09-765794883524

MdePkg/Include/Library/SmmServicesTableLib.h

@@ -0,0 +1,43 @@
+/** @file
+  Provides a service to retrieve a pointer to the SMM Services Table.
+  Only available to SMM module types.
+
+Copyright (c) 2009, 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.
+
+**/
+
+#ifndef __SMM_SERVICES_TABLE_LIB_H__
+#define __SMM_SERVICES_TABLE_LIB_H__
+
+#include <PiSmm.h>
+
+///
+/// Cache pointer to the SMM Services Table
+///
+extern EFI_SMM_SYSTEM_TABLE2   *gSmst;
+
+/**
+  This function allows the caller to determine if the driver is executing in 
+  System Management Mode(SMM).
+
+  This function returns TRUE if the driver is executing in SMM and FALSE if the 
+  driver is not executing in SMM.
+
+  @retval  TRUE  The driver is executing in System Management Mode (SMM).
+  @retval  FALSE The driver is not executing in System Management Mode (SMM). 
+
+**/
+BOOLEAN
+EFIAPI
+InSmm (
+  VOID
+  );
+
+#endif