ArmPkg/Library/ArmLib/ArmV7/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   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 #include <Uefi.h>
  16 #include <Chipset/ArmV7.h>
  17 #include <Library/ArmLib.h>
  18 #include <Library/BaseLib.h>
  19 #include <Library/IoLib.h>
  20 #include "ArmV7Lib.h"
  21 #include "ArmLibPrivate.h"
  22
  23 VOID
  24 ArmV7DataCacheOperation (
  25   IN  ARM_V7_CACHE_OPERATION  DataCacheOperation
  26   )
  27 {
  28   UINTN     SavedInterruptState;
  29
  30   SavedInterruptState = ArmGetInterruptState ();
  31   ArmDisableInterrupts ();
  32
  33   ArmV7AllDataCachesOperation (DataCacheOperation);
  34
  35   ArmDrainWriteBuffer ();
  36
  37   if (SavedInterruptState) {
  38     ArmEnableInterrupts ();
  39   }
  40 }
  41
  42 VOID
  43 EFIAPI
  44 ArmInvalidateDataCache (
  45   VOID
  46   )
  47 {
  48   ArmDrainWriteBuffer ();
  49   ArmV7DataCacheOperation (ArmInvalidateDataCacheEntryBySetWay);
  50 }
  51
  52 VOID
  53 EFIAPI
  54 ArmCleanInvalidateDataCache (
  55   VOID
  56   )
  57 {
  58   ArmDrainWriteBuffer ();
  59   ArmV7DataCacheOperation (ArmCleanInvalidateDataCacheEntryBySetWay);
  60 }
  61
  62 VOID
  63 EFIAPI
  64 ArmCleanDataCache (
  65   VOID
  66   )
  67 {
  68   ArmDrainWriteBuffer ();
  69   ArmV7DataCacheOperation (ArmCleanDataCacheEntryBySetWay);
  70 }