diff --git a/MdePkg/Library/BaseLib/BaseLib.inf b/MdePkg/Library/BaseLib/BaseLib.inf
index 3dc5cd4d0a..e208e7a5d2 100644
--- a/MdePkg/Library/BaseLib/BaseLib.inf
+++ b/MdePkg/Library/BaseLib/BaseLib.inf
@@ -471,6 +471,7 @@
   X64/Monitor.asm | MSFT
   X64/ReadPmc.nasm| MSFT
   X64/ReadPmc.asm | MSFT
+  X64/ReadTsc.nasm| MSFT
   X64/ReadTsc.asm | MSFT
   X64/WriteMm7.asm | MSFT
   X64/WriteMm6.asm | MSFT
@@ -556,6 +557,7 @@
   X64/Monitor.asm | INTEL
   X64/ReadPmc.nasm| INTEL
   X64/ReadPmc.asm | INTEL
+  X64/ReadTsc.nasm| INTEL
   X64/ReadTsc.asm | INTEL
   X64/WriteMm7.asm | INTEL
   X64/WriteMm6.asm | INTEL
diff --git a/MdePkg/Library/BaseLib/X64/ReadTsc.nasm b/MdePkg/Library/BaseLib/X64/ReadTsc.nasm
new file mode 100644
index 0000000000..457322cfe0
--- /dev/null
+++ b/MdePkg/Library/BaseLib/X64/ReadTsc.nasm
@@ -0,0 +1,40 @@
+;------------------------------------------------------------------------------
+;
+; Copyright (c) 2006, 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.
+;
+; 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:
+;
+;   ReadTsc.Asm
+;
+; Abstract:
+;
+;   AsmReadTsc function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+    DEFAULT REL
+    SECTION .text
+
+;------------------------------------------------------------------------------
+; UINT64
+; EFIAPI
+; AsmReadTsc (
+;   VOID
+;   );
+;------------------------------------------------------------------------------
+global ASM_PFX(AsmReadTsc)
+ASM_PFX(AsmReadTsc):
+    rdtsc
+    shl     rdx, 0x20
+    or      rax, rdx
+    ret
+