Revision: 16441
http://sourceforge.net/p/edk2/code/16441
Author: vanjeff
Date: 2014-11-25 08:14:01 +0000 (Tue, 25 Nov 2014)
Log Message:
-----------
MdePkg DxePcdLib: Updates DxePcdLib instance comments.
Describe PCD service can't be used at Runtime phase.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Liming Gao <[email protected]>
Reviewed-by: Star Zeng <[email protected]>
(Sync patch r16403 from main trunk.)
(cherry picked from commit 5347e8d5c32bb359a7d04e232e5cd7293af4e0bb)
Revision Links:
--------------
http://sourceforge.net/p/edk2/code/16403
Modified Paths:
--------------
branches/UDK2014.SP1/MdePkg/Library/DxePcdLib/DxePcdLib.inf
Modified: branches/UDK2014.SP1/MdePkg/Library/DxePcdLib/DxePcdLib.inf
===================================================================
--- branches/UDK2014.SP1/MdePkg/Library/DxePcdLib/DxePcdLib.inf 2014-11-25
08:13:19 UTC (rev 16440)
+++ branches/UDK2014.SP1/MdePkg/Library/DxePcdLib/DxePcdLib.inf 2014-11-25
08:14:01 UTC (rev 16441)
@@ -13,6 +13,11 @@
# This library instance uses the PCD_PROTOCOL to handle dynamic PCD request
and use
# EFI_PCD_PROTOCOL to handle dynamicEx type PCD.
#
+# Note: A driver of type DXE_RUNTIME_DRIVER and DXE_SMM_DRIVER can only use
this DxePcdLib
+# in their initialization without any issues to access Dynamic and DynamicEx
PCD. They can't
+# access Dynamic and DynamicEx PCD in the implementation of runtime services
and SMI handlers.
+# Because EFI_PCD_PROTOCOL is DXE protocol that is not aviable in OS runtime
phase.
+#
# Copyright (c) 2007 - 2014, Intel Corporation. All rights reserved.<BR>
#
# This program and the accompanying materials
------------------------------------------------------------------------------
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