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diff --git a/OldMdePkg/Library/BaseLib/Ipf/ReadCpuid.s b/OldMdePkg/Library/BaseLib/Ipf/ReadCpuid.s
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+/// @file
+///  IPF specific AsmReadCpuid()function
+///
+/// Copyright (c) 2006, Intel Corporation
+/// 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.
+///
+/// Module Name: ReadCpuid.s
+///
+///
+
+//---------------------------------------------------------------------------------
+//++
+// AsmReadCpuid
+//
+// This routine is used to Reads the current value of Processor Identifier Register (CPUID).
+//
+// Arguments :
+//
+// On Entry : The 8-bit Processor Identifier Register index to read.
+//
+// Return Value: The current value of Processor Identifier Register specified by Index.
+//
+//--
+//----------------------------------------------------------------------------------
+.text
+.type   AsmReadCpuid, @function
+.proc   AsmReadCpuid
+.regstk 1, 0, 0, 0
+
+AsmReadCpuid::
+        mov             r8 = cpuid[in0];;
+        br.ret.dpnt     b0;;
+.endp    AsmReadCpuid
+