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-rw-r--r--MdePkg/Include/Library/PalLib.h10
1 files changed, 9 insertions, 1 deletions
diff --git a/MdePkg/Include/Library/PalLib.h b/MdePkg/Include/Library/PalLib.h
index 33480a171e..5b9761f57f 100644
--- a/MdePkg/Include/Library/PalLib.h
+++ b/MdePkg/Include/Library/PalLib.h
@@ -1,6 +1,14 @@
/** @file
Provides library services to make PAL Calls.
-
+
+ The PAL Library provides a service to make a PAL CALL. This service is identical
+ in functionality to AsmPalCall() in the Itanium specific functions of the Base Library.
+ The only difference is that the PAL Entry Point is not passed in. Implementations
+ of this library class must manage PAL Entry Point on their own. For example, a PEI
+ implementation can use a PPI to lookup the PAL Entry Point, and a DXE implementation
+ can contain a constructor to look up the PAL Entry Point from a HOB. This library class
+ is only available on IPF.
+
Copyright (c) 2006 -2008, Intel Corporation All rights
reserved. This program and the accompanying materials are
licensed and made available under the terms and conditions of