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/** @file
Timer instance for I2C Pei Library.
Copyright (c) 2014 - 2017, Intel Corporation. All rights reserved.<BR>
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 <PiPei.h>
#include "I2CAccess.h"
#include "I2CDelayPei.h"
#include <Library/DebugLib.h>
#include <Library/PeiServicesTablePointerLib.h>
#include <Ppi/Stall.h>
/**
Stalls the CPU for at least the given number of microseconds.
@param[in] MicroSeconds The minimum number of microseconds to delay.
@retval EFI_SUCCESS Time delay successfully
**/
EFI_STATUS
EFIAPI
MicroSecondDelay (
IN UINTN MicroSeconds
)
{
EFI_PEI_STALL_PPI *StallPpi;
EFI_STATUS Status;
CONST EFI_PEI_SERVICES **PeiServices;
PeiServices = GetPeiServicesTablePointer ();
Status = (**PeiServices).LocatePpi (PeiServices, &gEfiPeiStallPpiGuid, 0, NULL, (VOID **) &StallPpi);
ASSERT(!EFI_ERROR(Status));
StallPpi->Stall (PeiServices, StallPpi, MicroSeconds);
return EFI_SUCCESS;
}
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