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53 lines
1.3 KiB
53 lines
1.3 KiB
4 years ago
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/** @file
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Stall Services that do stall and also enable the Stall operatation
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to be replayed during an S3 resume. This library class maps directly on top
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of the Timer class.
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Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions
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of the BSD License which accompanies this distribution. The
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full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <Base.h>
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#include <Library/TimerLib.h>
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#include <Library/DebugLib.h>
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#include <Library/S3BootScriptLib.h>
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#include <Library/S3StallLib.h>
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/**
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Stalls the CPU for at least the given number of microseconds and and saves
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the value in the S3 script to be replayed on S3 resume.
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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 MicroSeconds
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**/
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UINTN
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EFIAPI
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S3Stall (
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IN UINTN MicroSeconds
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)
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{
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RETURN_STATUS Status;
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Status = S3BootScriptSaveStall (MicroSecondDelay (MicroSeconds));
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ASSERT (Status == RETURN_SUCCESS);
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return MicroSeconds;
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}
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