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* Sync BaseTools to align with edk2-stable202311 Keep the SBL specific change (e.g. Lz4). Signed-off-by: Guo Dong <guo.dong@intel.com> * feat: Sync MdePkg from EDK2 edk2-stable202311 branch Only sync required file without any changes to EDK2 files. Signed-off-by: Guo Dong <guo.dong@intel.com> * feat: Update MdePkg for SBL after sync from EDK2 Signed-off-by: Guo Dong <guo.dong@intel.com> * Update SBL after updating Basetool and MdePkg After Sync BaseTool and MdePkg to edk2-stable202311, Need update SBL code to align with this change. Signed-off-by: Guo Dong <guo.dong@intel.com> * feat: rollback some changes after mdepkg sync New change from MdePkg requires new NASM version. To make sure NASM 2.14.02 still works, just rollback few changes. Signed-off-by: Guo Dong <guo.dong@intel.com> * feat: Update component size to fix build failure After syncing BaseTool and MdePkg, some components would have a little bigger size. So update the config to fix the build failure. Signed-off-by: Guo Dong <guo.dong@intel.com> * feat: Remove unused asl code Some ASL files don't exist but they are included in other asl files. It would cause build failure with new build BaseTool. So just remove them to fix the build failure. Signed-off-by: Guo Dong <guo.dong@intel.com> --------- Signed-off-by: Guo Dong <guo.dong@intel.com>
109 lines
2.9 KiB
C
109 lines
2.9 KiB
C
/** @file
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Provides calibrated delay and performance counter services.
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Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __TIMER_LIB__
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#define __TIMER_LIB__
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/**
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Stalls the CPU for at least the given number of microseconds.
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Stalls the CPU for the number of microseconds specified by MicroSeconds.
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@param MicroSeconds The minimum number of microseconds to delay.
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@return The value of MicroSeconds inputted.
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**/
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UINTN
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EFIAPI
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MicroSecondDelay (
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IN UINTN MicroSeconds
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);
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/**
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Stalls the CPU for at least the given number of nanoseconds.
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Stalls the CPU for the number of nanoseconds specified by NanoSeconds.
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@param NanoSeconds The minimum number of nanoseconds to delay.
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@return The value of NanoSeconds inputted.
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**/
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UINTN
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EFIAPI
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NanoSecondDelay (
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IN UINTN NanoSeconds
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);
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/**
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Retrieves the current value of a 64-bit free running performance counter.
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The counter can either count up by 1 or count down by 1. If the physical
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performance counter counts by a larger increment, then the counter values
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must be translated. The properties of the counter can be retrieved from
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GetPerformanceCounterProperties().
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@return The current value of the free running performance counter.
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**/
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UINT64
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EFIAPI
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GetPerformanceCounter (
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VOID
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);
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/**
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Retrieves the 64-bit frequency in Hz and the range of performance counter
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values.
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If StartValue is not NULL, then the value that the performance counter starts
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with immediately after is it rolls over is returned in StartValue. If
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EndValue is not NULL, then the value that the performance counter end with
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immediately before it rolls over is returned in EndValue. The 64-bit
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frequency of the performance counter in Hz is always returned. If StartValue
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is less than EndValue, then the performance counter counts up. If StartValue
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is greater than EndValue, then the performance counter counts down. For
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example, a 64-bit free running counter that counts up would have a StartValue
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of 0 and an EndValue of 0xFFFFFFFFFFFFFFFF. A 24-bit free running counter
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that counts down would have a StartValue of 0xFFFFFF and an EndValue of 0.
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@param StartValue The value the performance counter starts with when it
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rolls over.
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@param EndValue The value that the performance counter ends with before
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it rolls over.
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@return The frequency in Hz.
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**/
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UINT64
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EFIAPI
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GetPerformanceCounterProperties (
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OUT UINT64 *StartValue OPTIONAL,
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OUT UINT64 *EndValue OPTIONAL
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);
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/**
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Converts elapsed ticks of performance counter to time in nanoseconds.
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This function converts the elapsed ticks of running performance counter to
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time value in unit of nanoseconds.
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@param Ticks The number of elapsed ticks of running performance counter.
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@return The elapsed time in nanoseconds.
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**/
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UINT64
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EFIAPI
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GetTimeInNanoSecond (
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IN UINT64 Ticks
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);
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#endif
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