MdePkg: Replace BSD License with BSD+Patent License

[mirror_edk2.git] / MdePkg / Library / BaseTimerLibNullTemplate / TimerLibNull.c

diff --git a/MdePkg/Library/BaseTimerLibNullTemplate/TimerLibNull.c b/MdePkg/Library/BaseTimerLibNullTemplate/TimerLibNull.c
index 33a9736a246181574e9bde1895fc1fcc7d283190..e095bb4d8519625b5e2b3db68613705575cb56ac 100644 (file)
--- a/MdePkg/Library/BaseTimerLibNullTemplate/TimerLibNull.c
+++ b/MdePkg/Library/BaseTimerLibNullTemplate/TimerLibNull.c
@@ -1,19 +1,15 @@
 /** @file\r
-  Timer Library functions for runtime drivers.\r
+  A non-functional instance of the Timer Library.\r
 \r
-  Copyright (c) 2007, Intel Corporation<BR>\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
-\r
-  Module Name:  RuntimeTimerLib.c\r
+  Copyright (c) 2007 - 2011, Intel Corporation. All rights reserved.<BR>\r
+  SPDX-License-Identifier: BSD-2-Clause-Patent\r
 \r
 **/\r
 \r
+#include <Base.h>\r
+#include <Library/TimerLib.h>\r
+#include <Library/DebugLib.h>\r
+\r
 /**\r
   Stalls the CPU for at least the given number of microseconds.\r
 \r
@@ -21,7 +17,7 @@
 \r
   @param  MicroSeconds  The minimum number of microseconds to delay.\r
 \r
-  @return MicroSeconds\r
+  @return The value of MicroSeconds inputted.\r
 \r
 **/\r
 UINTN\r
@@ -41,7 +37,7 @@ MicroSecondDelay (
 \r
   @param  NanoSeconds The minimum number of nanoseconds to delay.\r
 \r
-  @return NanoSeconds\r
+  @return The value of NanoSeconds inputted.\r
 \r
 **/\r
 UINTN\r
@@ -57,8 +53,7 @@ NanoSecondDelay (
 /**\r
   Retrieves the current value of a 64-bit free running performance counter.\r
 \r
-  Retrieves the current value of a 64-bit free running performance counter. The\r
-  counter can either count up by 1 or count down by 1. If the physical\r
+  The counter can either count up by 1 or count down by 1. If the physical\r
   performance counter counts by a larger increment, then the counter values\r
   must be translated. The properties of the counter can be retrieved from\r
   GetPerformanceCounterProperties().\r
@@ -107,5 +102,27 @@ GetPerformanceCounterProperties (
   )\r
 {\r
   ASSERT (FALSE);\r
+\r
+  return (UINT64)(-1);\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
+  ASSERT (FALSE);\r
   return 0;\r
 }\r