MdePkg/Include/Library/S3StallLib.h

   1 /** @file
   2   Stall Services that perform stalls and also enable the Stall operatation
   3   to be replayed during an S3 resume. This library class maps directly on top
   4   of the Timer class.
   5
   6   Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
   7
   8   SPDX-License-Identifier: BSD-2-Clause-Patent
   9
  10 **/
  11
  12 #ifndef __S3_STALL_LIB_H__
  13 #define __S3_STALL_LIB_H__
  14
  15 /**
  16   Stalls the CPU for at least the given number of microseconds and saves
  17   the value in the S3 script to be replayed on S3 resume.
  18
  19   Stalls the CPU for the number of microseconds specified by MicroSeconds.
  20
  21   @param[in] MicroSeconds   The minimum number of microseconds to delay.
  22
  23   @return   MicroSeconds.
  24
  25 **/
  26 UINTN
  27 EFIAPI
  28 S3Stall (
  29   IN UINTN  MicroSeconds
  30   );
  31
  32 #endif