2 files changed, 147 insertions, 0 deletions
diff --git a/Omap35xxPkg/Library/Omap35xxTimerLib/Omap35xxTimerLib.inf b/Omap35xxPkg/Library/Omap35xxTimerLib/Omap35xxTimerLib.inf
new file mode 100644
index 0000000000..515dff9f65
--- /dev/null
+++ b/Omap35xxPkg/Library/Omap35xxTimerLib/Omap35xxTimerLib.inf
@@ -0,0 +1,45 @@
+#/** @file
+# Timer library implementation
+#
+# A non-functional instance of the Timer Library that can be used as a template
+#  for the implementation of a functional timer library instance. This library instance can
+#  also be used to test build DXE, Runtime, DXE SAL, and DXE SMM modules that require timer
+#  services as well as EBC modules that require timer services
+# Copyright (c) 2007, 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.
+#
+#
+#**/
+
+[Defines]
+  INF_VERSION                    = 0x00010005
+  BASE_NAME                      = BeagleBoardTimerLib
+  FILE_GUID                      = fe1d7183-9abb-42ce-9a3b-36d7c6a8959f
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = TimerLib 
+
+[Sources.common]
+  TimerLib.c
+
+[Packages]
+  Omap35xxPkg/Omap35xxPkg.dec
+  MdePkg/MdePkg.dec
+  EmbeddedPkg/EmbeddedPkg.dec
+
+[LibraryClasses]
+  DebugLib
+  OmapLib
+  IoLib
+
+[Pcd]
+  gEmbeddedTokenSpaceGuid.PcdEmbeddedPerformanceCounterFreqencyInHz
+  gEmbeddedTokenSpaceGuid.PcdEmbeddedFdPerformanceCounterPeriodInNanoseconds
+  gOmap35xxTokenSpaceGuid.PcdOmap35xxFreeTimer
+
diff --git a/Omap35xxPkg/Library/Omap35xxTimerLib/TimerLib.c b/Omap35xxPkg/Library/Omap35xxTimerLib/TimerLib.c
new file mode 100644
index 0000000000..1b1f2a9dbe
--- /dev/null
+++ b/Omap35xxPkg/Library/Omap35xxTimerLib/TimerLib.c
@@ -0,0 +1,102 @@
+/** @file
+
+  Copyright (c) 2008-2009, Apple Inc. All rights reserved.
+  
+  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.
+
+**/
+
+#include <Base.h>
+
+#include <Library/BaseLib.h>
+#include <Library/TimerLib.h>
+#include <Library/DebugLib.h>
+#include <Library/PcdLib.h>
+#include <Library/IoLib.h>
+#include <Library/OmapLib.h>
+
+#include <Omap3530/Omap3530.h>
+
+UINTN
+EFIAPI
+MicroSecondDelay (
+  IN  UINTN MicroSeconds
+  )
+{
+  UINT64  NanoSeconds;
+  
+  NanoSeconds = MultU64x32(MicroSeconds, 1000);
+
+  while (NanoSeconds > (UINTN)-1) { 
+    NanoSecondDelay((UINTN)-1);
+    NanoSeconds -= (UINTN)-1;
+  }
+
+  NanoSecondDelay(NanoSeconds);
+
+  return MicroSeconds;
+}
+
+UINTN
+EFIAPI
+NanoSecondDelay (
+  IN  UINTN NanoSeconds
+  )
+{
+  UINT32  Delay;
+  UINT32  StartTime;
+  UINT32  CurrentTime;
+  UINT32  ElapsedTime;
+  UINT32  TimerCountRegister;
+
+  Delay = (NanoSeconds / PcdGet32(PcdEmbeddedFdPerformanceCounterPeriodInNanoseconds)) + 1;
+  
+  TimerCountRegister = TimerBase(PcdGet32(PcdOmap35xxFreeTimer)) + GPTIMER_TCRR;
+
+  StartTime = MmioRead32 (TimerCountRegister);
+
+  do 
+  {
+    CurrentTime = MmioRead32 (TimerCountRegister);
+    ElapsedTime = CurrentTime - StartTime;
+  } while (ElapsedTime < Delay);
+
+  NanoSeconds = ElapsedTime * PcdGet32(PcdEmbeddedFdPerformanceCounterPeriodInNanoseconds);
+
+  return NanoSeconds;
+}
+
+UINT64
+EFIAPI
+GetPerformanceCounter (
+  VOID
+  )
+{ 
+  return (UINT64)MmioRead32 (TimerBase(PcdGet32(PcdOmap35xxFreeTimer)) + GPTIMER_TCRR);
+}
+
+UINT64
+EFIAPI
+GetPerformanceCounterProperties (
+  OUT UINT64  *StartValue,  OPTIONAL
+  OUT UINT64  *EndValue     OPTIONAL
+  )
+{
+  if (StartValue != NULL) {
+    // Timer starts with the reload value
+    *StartValue = (UINT64)MmioRead32 (TimerBase(PcdGet32(PcdOmap35xxFreeTimer)) + GPTIMER_TLDR);
+  }
+  
+  if (EndValue != NULL) {
+    // Timer counts up to 0xFFFFFFFF
+    *EndValue = 0xFFFFFFFF;
+  }
+  
+  return PcdGet64(PcdEmbeddedPerformanceCounterFreqencyInHz);
+}