audk/ArmPkg/Library/ArmLib/Arm/ArmV7Lib.c

/** @file

  Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
  Copyright (c) 2011 - 2014, ARM Limited. All rights reserved.

  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#include <Base.h>

#include <Library/ArmLib.h>
#include <Library/DebugLib.h>

#include <Chipset/ArmV7.h>

#include "ArmV7Lib.h"
#include "ArmLibPrivate.h"

VOID
ArmV7DataCacheOperation (
  IN  ARM_V7_CACHE_OPERATION  DataCacheOperation
  )
{
  UINTN     SavedInterruptState;

  SavedInterruptState = ArmGetInterruptState ();
  ArmDisableInterrupts ();

  ArmV7AllDataCachesOperation (DataCacheOperation);

  ArmDataSynchronizationBarrier ();

  if (SavedInterruptState) {
    ArmEnableInterrupts ();
  }
}

VOID
EFIAPI
ArmInvalidateDataCache (
  VOID
  )
{
  ASSERT (!ArmMmuEnabled ());

  ArmDataSynchronizationBarrier ();
  ArmV7DataCacheOperation (ArmInvalidateDataCacheEntryBySetWay);
}

VOID
EFIAPI
ArmCleanInvalidateDataCache (
  VOID
  )
{
  ASSERT (!ArmMmuEnabled ());

  ArmDataSynchronizationBarrier ();
  ArmV7DataCacheOperation (ArmCleanInvalidateDataCacheEntryBySetWay);
}

VOID
EFIAPI
ArmCleanDataCache (
  VOID
  )
{
  ASSERT (!ArmMmuEnabled ());

  ArmDataSynchronizationBarrier ();
  ArmV7DataCacheOperation (ArmCleanDataCacheEntryBySetWay);
}