1, Correct the PCD PEIM to produce gEfiPcdPpi and gPcdPpi at same time;

2, Combine two action of InstallProtocolInstance for gEfiPcdProtocol and gPcdProtocol into InstallMultipleProtocolInstances.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9468 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/PCD/Dxe/Pcd.c

@@ -1,6 +1,7 @@
 /** @file
   PCD DXE driver manage all PCD entry initialized in PEI phase and DXE phase, and
-  produce the implementation of PCD protocol.
+  produce the implementation of native PCD protocol and EFI_PCD_PROTOCOL defined in
+  PI 1.2 Vol3.
 
 Copyright (c) 2006 - 2009, Intel Corporation
 All rights reserved. This program and the accompanying materials
@@ -27,6 +28,10 @@ EFI_GUID *TmpTokenSpaceBuffer[PEI_EXMAPPING_TABLE_SIZE + DXE_EXMAPPING_TABLE_SIZ
 ///
 EFI_LOCK mPcdDatabaseLock = EFI_INITIALIZE_LOCK_VARIABLE(TPL_NOTIFY);
 
+//
+// PCD_PROTOCOL the native implementation provided by MdePkg which support dynamic 
+// type and dynamicEx type PCD.
+//
 PCD_PROTOCOL mPcdInstance = {
   DxePcdSetSku,
 
@@ -66,6 +71,10 @@ PCD_PROTOCOL mPcdInstance = {
   DxePcdGetNextTokenSpace
 };
 
+//
+// EFI_PCD_PROTOCOL is defined in PI 1.2 Vol 3 which only support dynamicEx type
+// PCD.
+//
 EFI_PCD_PROTOCOL mEfiPcdInstance = {
   DxePcdSetSku,
   DxePcdGet8Ex,
@@ -87,10 +96,8 @@ EFI_PCD_PROTOCOL mEfiPcdInstance = {
   DxePcdGetNextTokenSpace
 };
 
-//
-// Static global to reduce the code size
-//
-EFI_HANDLE mNewHandle = NULL;
+
+
 
 /**
   Main entry for PCD DXE driver.
@@ -110,8 +117,9 @@ PcdDxeInit (
   IN EFI_SYSTEM_TABLE     *SystemTable
   )
 {
-  EFI_STATUS          Status;
-
+  EFI_STATUS Status;
+  EFI_HANDLE mNewHandle;
+  
   //
   // Make sure the Pcd Protocol is not already installed in the system
   //
@@ -120,26 +128,20 @@ PcdDxeInit (
 
   BuildPcdDxeDataBase ();
 
-  Status = gBS->InstallProtocolInterface (
-                  &mNewHandle,
-                  &gPcdProtocolGuid,
-                  EFI_NATIVE_INTERFACE,
-                  &mPcdInstance
-                  );
-
+  mNewHandle = NULL;
   
   //
-  // Also install gEfiPcdProtocolGuid which is only support dynamic-ex type 
-  // PCD.
+  // Install PCD_PROTOCOL to handle dynamic type PCD
+  // Install EFI_PCD_PROTOCOL to handle dynamicEx type PCD
   //
-  mNewHandle = NULL;
-  Status = gBS->InstallProtocolInterface (
+  Status = gBS->InstallMultipleProtocolInterfaces (
                   &mNewHandle,
+                  &gPcdProtocolGuid,
+                  &mPcdInstance,
                   &gEfiPcdProtocolGuid,
-                  EFI_NATIVE_INTERFACE,
                   &mEfiPcdInstance
                   );
-                  
+                 
   ASSERT_EFI_ERROR (Status);
 
   return EFI_SUCCESS;

MdeModulePkg/Universal/PCD/Pei/Pcd.c

@@ -14,6 +14,10 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 
 #include "Service.h"
 
+//
+// Instance of PCD_PPI protocol is native implementation by MdePkg.
+// This protocol instance support dynamic and dynamicEx type PCDs.
+//
 PCD_PPI mPcdPpiInstance = {
   PeiPcdSetSku,
 
@@ -53,6 +57,10 @@ PCD_PPI mPcdPpiInstance = {
   PeiPcdGetNextTokenSpace
 };
 
+//
+// Instance of EFI_PEI_PCD_PPI which is defined in PI 1.2 Vol 3.
+// This PPI instance only support dyanmicEx type PCD.
+//
 EFI_PEI_PCD_PPI  mEfiPcdPpiInstance = {
   PeiPcdSetSku,
   
@@ -90,7 +98,7 @@ EFI_PEI_PPI_DESCRIPTOR  mEfiPpiPCD = {
 /**
   Main entry for PCD PEIM driver.
   
-  This routine initialize the PCD database for PEI phase and install PCD_PPI.
+  This routine initialize the PCD database for PEI phase and install PCD_PPI/EFI_PEI_PCD_PPI.
 
   @param  FileHandle  Handle of the file being invoked.
   @param  PeiServices Describes the list of possible PEI Services.
@@ -105,9 +113,24 @@ PcdPeimInit (
   IN CONST EFI_PEI_SERVICES     **PeiServices
   )
 {
+  EFI_STATUS Status;
+  
   BuildPcdDatabase ();
 
-  return PeiServicesInstallPpi (&mPpiPCD);
+  //
+  // Install PCD_PPI which produce support for dynamic and dynamicEx PCD
+  //
+  Status = PeiServicesInstallPpi (&mPpiPCD);
+  ASSERT_EFI_ERROR (Status);
+  
+  //
+  // Install EFI_PCD_PPI which produce support for dynamicEx PCD which is defined
+  // in PI 1.2 Vol 3 specification.
+  //
+  Status = PeiServicesInstallPpi (&mEfiPpiPCD);
+  ASSERT_EFI_ERROR (Status);
+  
+  return Status;
 }
 
 /**