UefiCpuPkg: Move AsmRelocateApLoopStart from Mpfuncs.nasm to AmdSev.nasm

[mirror_edk2.git] / MdePkg / Include / Library / TimerLib.h

diff --git a/MdePkg/Include/Library/TimerLib.h b/MdePkg/Include/Library/TimerLib.h
index e24342e1f6cbd049a0f4a6ac8820e4b619e73479..5cfd4ab5d54bdee2817632fae587c20f7768ae29 100644 (file)
--- a/MdePkg/Include/Library/TimerLib.h
+++ b/MdePkg/Include/Library/TimerLib.h
@@ -1,14 +1,8 @@
 /** @file\r
   Provides calibrated delay and performance counter services.\r
 \r
-Copyright (c) 2006 - 2008, Intel Corporation\r
-All rights reserved. This program and the accompanying materials\r
-are licensed and made available under the terms and conditions of the BSD License\r
-which accompanies this distribution.  The full text of the license may be found at\r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>\r
+SPDX-License-Identifier: BSD-2-Clause-Patent\r
 \r
 **/\r
 \r
@@ -28,7 +22,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 UINTN\r
 EFIAPI\r
 MicroSecondDelay (\r
-  IN      UINTN                     MicroSeconds\r
+  IN      UINTN  MicroSeconds\r
   );\r
 \r
 /**\r
@@ -44,7 +38,7 @@ MicroSecondDelay (
 UINTN\r
 EFIAPI\r
 NanoSecondDelay (\r
-  IN      UINTN                     NanoSeconds\r
+  IN      UINTN  NanoSeconds\r
   );\r
 \r
 /**\r
@@ -90,8 +84,25 @@ GetPerformanceCounter (
 UINT64\r
 EFIAPI\r
 GetPerformanceCounterProperties (\r
-  OUT      UINT64                    *StartValue,  OPTIONAL\r
-  OUT      UINT64                    *EndValue     OPTIONAL\r
+  OUT      UINT64  *StartValue   OPTIONAL,\r
+  OUT      UINT64  *EndValue     OPTIONAL\r
+  );\r
+\r
+/**\r
+  Converts elapsed ticks of performance counter to time in nanoseconds.\r
+\r
+  This function converts the elapsed ticks of running performance counter to\r
+  time value in unit of nanoseconds.\r
+\r
+  @param  Ticks     The number of elapsed ticks of running performance counter.\r
+\r
+  @return The elapsed time in nanoseconds.\r
+\r
+**/\r
+UINT64\r
+EFIAPI\r
+GetTimeInNanoSecond (\r
+  IN      UINT64  Ticks\r
   );\r
 \r
 #endif\r