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 #include <Uefi.h>
  10 #include <Chipset/ArmV7.h>
  11 #include <Library/ArmLib.h>
  12 #include <Library/BaseLib.h>
  13 #include <Library/IoLib.h>
  14 #include "ArmV7Lib.h"
  15 #include "ArmLibPrivate.h"
  16
  17 VOID
  18 ArmV7DataCacheOperation (
  19   IN  ARM_V7_CACHE_OPERATION  DataCacheOperation
  20   )
  21 {
  22   UINTN     SavedInterruptState;
  23
  24   SavedInterruptState = ArmGetInterruptState ();
  25   ArmDisableInterrupts ();
  26
  27   ArmV7AllDataCachesOperation (DataCacheOperation);
  28
  29   ArmDataSynchronizationBarrier ();
  30
  31   if (SavedInterruptState) {
  32     ArmEnableInterrupts ();
  33   }
  34 }
  35
  36 VOID
  37 EFIAPI
  38 ArmInvalidateDataCache (
  39   VOID
  40   )
  41 {
  42   ArmDataSynchronizationBarrier ();
  43   ArmV7DataCacheOperation (ArmInvalidateDataCacheEntryBySetWay);
  44 }
  45
  46 VOID
  47 EFIAPI
  48 ArmCleanInvalidateDataCache (
  49   VOID
  50   )
  51 {
  52   ArmDataSynchronizationBarrier ();
  53   ArmV7DataCacheOperation (ArmCleanInvalidateDataCacheEntryBySetWay);
  54 }
  55
  56 VOID
  57 EFIAPI
  58 ArmCleanDataCache (
  59   VOID
  60   )
  61 {
  62   ArmDataSynchronizationBarrier ();
  63   ArmV7DataCacheOperation (ArmCleanDataCacheEntryBySetWay);
  64 }