ArmPlatformPkg/PrePiHobListPointerLib: Get the HobListPointer from the stop of the stack

When using ArmPlatformPkg/PrePeiCore or ArmPlatformPkg/PrePi, the global variable during
the XIP phase are stored on the top of the stack.
Global variables are defined by their PCD offset from the top of this stack.

For example, the HobListPtr is defined at the offset PcdHobListPtrGlobalOffset.



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11958 6f19259b-4bc3-4df7-8a09-765794883524

ArmPlatformPkg/Library/PrePiHobListPointerLib/PrePiHobListPointerLib.inf

@@ -0,0 +1,37 @@
+#/** @file
+#
+#  Copyright (c) 2011, ARM Limited. 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.             
+#
+#**/
+
+[Defines]
+  INF_VERSION                    = 0x00010005
+  BASE_NAME                      = PrePiHobListPointerLib
+  FILE_GUID                      = d751d880-5ee2-11e0-b93e-0002a5d5c51b
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = PrePiHobListPointerLib
+
+[Sources]
+  PrePiHobListPointer.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+  ArmPlatformPkg/ArmPlatformPkg.dec
+  EmbeddedPkg/EmbeddedPkg.dec
+
+[LibraryClasses]
+  
+[FixedPcd.common]
+  gArmPlatformTokenSpaceGuid.PcdHobListPtrGlobalOffset
+  gArmPlatformTokenSpaceGuid.PcdCPUCoresNonSecStackBase
+  gArmPlatformTokenSpaceGuid.PcdCPUCoresNonSecStackSize
+