+++ /dev/null
-/** @file\r
-\r
- Copyright (c) 2008-2009, Apple Inc. All rights reserved.\r
- \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
-**/\r
-\r
-#include <Base.h>\r
-\r
-#include <Library/BaseLib.h>\r
-#include <Library/TimerLib.h>\r
-#include <Library/DebugLib.h>\r
-#include <Library/PcdLib.h>\r
-#include <Library/IoLib.h>\r
-#include <Library/OmapLib.h>\r
-\r
-#include <Omap3530/Omap3530.h>\r
-\r
-UINTN\r
-EFIAPI\r
-MicroSecondDelay (\r
- IN UINTN MicroSeconds\r
- )\r
-{\r
- UINT64 NanoSeconds;\r
- \r
- NanoSeconds = MultU64x32(MicroSeconds, 1000);\r
-\r
- while (NanoSeconds > (UINTN)-1) { \r
- NanoSecondDelay((UINTN)-1);\r
- NanoSeconds -= (UINTN)-1;\r
- }\r
-\r
- NanoSecondDelay(NanoSeconds);\r
-\r
- return MicroSeconds;\r
-}\r
-\r
-UINTN\r
-EFIAPI\r
-NanoSecondDelay (\r
- IN UINTN NanoSeconds\r
- )\r
-{\r
- UINT32 Delay;\r
- UINT32 StartTime;\r
- UINT32 CurrentTime;\r
- UINT32 ElapsedTime;\r
- UINT32 TimerCountRegister;\r
-\r
- Delay = (NanoSeconds / PcdGet32(PcdEmbeddedFdPerformanceCounterPeriodInNanoseconds)) + 1;\r
- \r
- TimerCountRegister = TimerBase(PcdGet32(PcdOmap35xxFreeTimer)) + GPTIMER_TCRR;\r
-\r
- StartTime = MmioRead32 (TimerCountRegister);\r
-\r
- do \r
- {\r
- CurrentTime = MmioRead32 (TimerCountRegister);\r
- ElapsedTime = CurrentTime - StartTime;\r
- } while (ElapsedTime < Delay);\r
-\r
- NanoSeconds = ElapsedTime * PcdGet32(PcdEmbeddedFdPerformanceCounterPeriodInNanoseconds);\r
-\r
- return NanoSeconds;\r
-}\r
-\r
-UINT64\r
-EFIAPI\r
-GetPerformanceCounter (\r
- VOID\r
- )\r
-{ \r
- return (UINT64)MmioRead32 (TimerBase(PcdGet32(PcdOmap35xxFreeTimer)) + GPTIMER_TCRR);\r
-}\r
-\r
-UINT64\r
-EFIAPI\r
-GetPerformanceCounterProperties (\r
- OUT UINT64 *StartValue, OPTIONAL\r
- OUT UINT64 *EndValue OPTIONAL\r
- )\r
-{\r
- if (StartValue != NULL) {\r
- // Timer starts with the reload value\r
- *StartValue = (UINT64)MmioRead32 (TimerBase(PcdGet32(PcdOmap35xxFreeTimer)) + GPTIMER_TLDR);\r
- }\r
- \r
- if (EndValue != NULL) {\r
- // Timer counts up to 0xFFFFFFFF\r
- *EndValue = 0xFFFFFFFF;\r
- }\r
- \r
- return PcdGet64(PcdEmbeddedPerformanceCounterFreqencyInHz);\r
-}\r