ArmPkg/Library/ArmLib/AArch64/AArch64Lib.c

   1 /** @file
   2
   3   Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
   4   Portions copyright (c) 2011 - 2014, ARM Ltd. All rights reserved.<BR>
   5
   6   This program and the accompanying materials
   7   are licensed and made available under the terms and conditions of the BSD License
   8   which accompanies this distribution.  The full text of the license may be found at
   9   http://opensource.org/licenses/bsd-license.php
  10
  11   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  12   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  13
  14 **/
  15
  16 #include <Uefi.h>
  17 #include <Chipset/AArch64.h>
  18 #include <Library/ArmLib.h>
  19 #include <Library/BaseLib.h>
  20 #include <Library/IoLib.h>
  21 #include "AArch64Lib.h"
  22 #include "ArmLibPrivate.h"
  23
  24 VOID
  25 AArch64DataCacheOperation (
  26   IN  AARCH64_CACHE_OPERATION  DataCacheOperation
  27   )
  28 {
  29   UINTN     SavedInterruptState;
  30
  31   SavedInterruptState = ArmGetInterruptState ();
  32   ArmDisableInterrupts();
  33
  34   AArch64AllDataCachesOperation (DataCacheOperation);
  35
  36   ArmDrainWriteBuffer ();
  37
  38   if (SavedInterruptState) {
  39     ArmEnableInterrupts ();
  40   }
  41 }
  42
  43 VOID
  44 EFIAPI
  45 ArmInvalidateDataCache (
  46   VOID
  47   )
  48 {
  49   ArmDrainWriteBuffer ();
  50   AArch64DataCacheOperation (ArmInvalidateDataCacheEntryBySetWay);
  51 }
  52
  53 VOID
  54 EFIAPI
  55 ArmCleanInvalidateDataCache (
  56   VOID
  57   )
  58 {
  59   ArmDrainWriteBuffer ();
  60   AArch64DataCacheOperation (ArmCleanInvalidateDataCacheEntryBySetWay);
  61 }
  62
  63 VOID
  64 EFIAPI
  65 ArmCleanDataCache (
  66   VOID
  67   )
  68 {
  69   ArmDrainWriteBuffer ();
  70   AArch64DataCacheOperation (ArmCleanDataCacheEntryBySetWay);
  71 }