ArmPkg/Library/ArmLib/Arm/ArmV7Lib.c

   1 /** @file
   2
   3   Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
   4   Copyright (c) 2011 - 2014, ARM Limited. All rights reserved.
   5
   6   SPDX-License-Identifier: BSD-2-Clause-Patent
   7
   8 **/
   9
  10 #include <Base.h>
  11
  12 #include <Library/ArmLib.h>
  13 #include <Library/DebugLib.h>
  14
  15 #include <Chipset/ArmV7.h>
  16
  17 #include "ArmV7Lib.h"
  18 #include "ArmLibPrivate.h"
  19
  20 VOID
  21 ArmV7DataCacheOperation (
  22   IN  ARM_V7_CACHE_OPERATION  DataCacheOperation
  23   )
  24 {
  25   UINTN     SavedInterruptState;
  26
  27   SavedInterruptState = ArmGetInterruptState ();
  28   ArmDisableInterrupts ();
  29
  30   ArmV7AllDataCachesOperation (DataCacheOperation);
  31
  32   ArmDataSynchronizationBarrier ();
  33
  34   if (SavedInterruptState) {
  35     ArmEnableInterrupts ();
  36   }
  37 }
  38
  39 VOID
  40 EFIAPI
  41 ArmInvalidateDataCache (
  42   VOID
  43   )
  44 {
  45   ASSERT (!ArmMmuEnabled ());
  46
  47   ArmDataSynchronizationBarrier ();
  48   ArmV7DataCacheOperation (ArmInvalidateDataCacheEntryBySetWay);
  49 }
  50
  51 VOID
  52 EFIAPI
  53 ArmCleanInvalidateDataCache (
  54   VOID
  55   )
  56 {
  57   ASSERT (!ArmMmuEnabled ());
  58
  59   ArmDataSynchronizationBarrier ();
  60   ArmV7DataCacheOperation (ArmCleanInvalidateDataCacheEntryBySetWay);
  61 }
  62
  63 VOID
  64 EFIAPI
  65 ArmCleanDataCache (
  66   VOID
  67   )
  68 {
  69   ASSERT (!ArmMmuEnabled ());
  70
  71   ArmDataSynchronizationBarrier ();
  72   ArmV7DataCacheOperation (ArmCleanDataCacheEntryBySetWay);
  73 }