ArmPkg/Library/ArmLib/Common/ArmLib.c

   1 /** @file
   2
   3   Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
   4   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 <Base.h>
  17
  18 #include <Library/ArmLib.h>
  19 #include <Library/DebugLib.h>
  20 #include <Library/PcdLib.h>
  21
  22 #include "ArmLibPrivate.h"
  23
  24 VOID
  25 EFIAPI
  26 ArmCacheInformation (
  27   OUT ARM_CACHE_INFO  *CacheInfo
  28   )
  29 {
  30   if (CacheInfo != NULL) {
  31     CacheInfo->Type                           = ArmCacheType();
  32     CacheInfo->Architecture                   = ArmCacheArchitecture();
  33     CacheInfo->DataCachePresent               = ArmDataCachePresent();
  34     CacheInfo->DataCacheSize                  = ArmDataCacheSize();
  35     CacheInfo->DataCacheAssociativity         = ArmDataCacheAssociativity();
  36     CacheInfo->DataCacheLineLength            = ArmDataCacheLineLength();
  37     CacheInfo->InstructionCachePresent        = ArmInstructionCachePresent();
  38     CacheInfo->InstructionCacheSize           = ArmInstructionCacheSize();
  39     CacheInfo->InstructionCacheAssociativity  = ArmInstructionCacheAssociativity();
  40     CacheInfo->InstructionCacheLineLength     = ArmInstructionCacheLineLength();
  41   }
  42 }
  43
  44 VOID
  45 EFIAPI
  46 ArmSetAuxCrBit (
  47   IN  UINT32    Bits
  48   )
  49 {
  50   UINT32 val = ArmReadAuxCr();
  51   val |= Bits;
  52   ArmWriteAuxCr(val);
  53 }
  54
  55 VOID
  56 EFIAPI
  57 ArmUnsetAuxCrBit (
  58   IN  UINT32    Bits
  59   )
  60 {
  61   UINT32 val = ArmReadAuxCr();
  62   val &= ~Bits;
  63   ArmWriteAuxCr(val);
  64 }
  65
  66 //
  67 // Helper functions for accessing CPUACTLR
  68 //
  69
  70 VOID
  71 EFIAPI
  72 ArmSetCpuActlrBit (
  73   IN  UINTN    Bits
  74   )
  75 {
  76   UINTN Value;
  77   Value =  ArmReadCpuActlr ();
  78   Value |= Bits;
  79   ArmWriteCpuActlr (Value);
  80 }
  81
  82 VOID
  83 EFIAPI
  84 ArmUnsetCpuActlrBit (
  85   IN  UINTN    Bits
  86   )
  87 {
  88   UINTN Value;
  89   Value = ArmReadCpuActlr ();
  90   Value &= ~Bits;
  91   ArmWriteCpuActlr (Value);
  92 }