X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdePkg%2FLibrary%2FPeiPcdLib%2FPeiPcdLib.inf;h=84f1a91d7feea6a9e553fb56c2bd2920948a9df7;hp=f48f929a44fcb0c273e4c27c42777b00c5773dda;hb=2fc59a003ed9104f9feebe0e418f2a04a50f3284;hpb=1c280088ec83160a5f190b3d0ba796b224ee23b3

diff --git a/MdePkg/Library/PeiPcdLib/PeiPcdLib.inf b/MdePkg/Library/PeiPcdLib/PeiPcdLib.inf
index f48f929a44..84f1a91d7f 100644
--- a/MdePkg/Library/PeiPcdLib/PeiPcdLib.inf
+++ b/MdePkg/Library/PeiPcdLib/PeiPcdLib.inf
@@ -1,20 +1,31 @@
-#/** @file
-# PCD Library instance implemented with PCD PPI.
+## @file
+# Instance of PCD Library using PCD PPI.
 #
-# This library instance implement the APIs listed 
-#  in PCD library class defined in MDE library specification.
-#  It is used by module in PEI phase.
-# Copyright (c) 2007, Intel Corporation
+# There are two PCD PPIs as follows:
+#   1) PCD_PPI 
+#      It is EDKII implementation which support Dynamic/DynamicEx Pcds.
+#   2) EFI_PEI_PCD_PPI
+#      It is defined by PI specification 1.2, Vol 3 which only support dynamicEx 
+#      type Pcd.
+# For dynamicEx type PCD, it is compatible between PCD_PPI and EFI_PEI_PCD_PPI.
+# This library instance uses the PCD_PPI to handle dynamic PCD request and use
+# EFI_PEI_PCD_PPI to handle dynamicEx type PCD.
 #
-#  All rights reserved. This program and the accompanying materials
+# This library instance assume the PCD_PPI and EFI_PEI_PCD_PPI are both installed early.
+#
+# PCD Library that uses the PCD PPI to access Dynamic and DynamicEx PCD entries
+#
+# Copyright (c) 2007 - 2010, Intel Corporation. All rights reserved.<BR>
+#
+#  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
+#  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
@@ -22,16 +33,14 @@
   FILE_GUID                      = 9dbf6f25-0da2-4a1d-8e12-e78de6ab4d0e
   MODULE_TYPE                    = PEIM
   VERSION_STRING                 = 1.0
-  LIBRARY_CLASS                  = PcdLib|PEIM PEI_CORE 
-  EDK_RELEASE_VERSION            = 0x00020000
-  EFI_SPECIFICATION_VERSION      = 0x00020000
+  LIBRARY_CLASS                  = PcdLib|PEIM PEI_CORE SEC
 
 
 #
-#  VALID_ARCHITECTURES           = IA32 X64 IPF EBC
+#  VALID_ARCHITECTURES           = IA32 X64 IPF EBC (EBC is for build only)
 #
 
-[Sources.common]
+[Sources]
   PeiPcdLib.c
 
 
@@ -41,13 +50,14 @@
 
 [LibraryClasses]
   BaseMemoryLib
-  PeiServicesTablePointerLib
   PeiServicesLib
   DebugLib
 
 
 [Ppis]
-  gPcdPpiGuid                                   # PPI ALWAYS_CONSUMED
-
-[Depex]
-  gPcdPpiGuid
\ No newline at end of file
+  gPcdPpiGuid                                   ## CONSUMES
+  gEfiPeiPcdPpiGuid                             ## CONSUMES
+  
+[depex]
+  gEfiPeiPcdPpiGuid
+  
\ No newline at end of file