ArmPkg/Library/ArmLib/Common/ArmLib.c

   1 /** @file
   2
   3   Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
   4
   5   This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #include <Base.h>
  16
  17 #include <Library/ArmLib.h>
  18 #include <Library/DebugLib.h>
  19 #include <Library/PcdLib.h>
  20
  21 #include "ArmLibPrivate.h"
  22
  23 VOID
  24 EFIAPI
  25 ArmCacheInformation (
  26   OUT ARM_CACHE_INFO  *CacheInfo
  27   )
  28 {
  29   if (CacheInfo != NULL) {
  30     CacheInfo->Type                           = ArmCacheType();
  31     CacheInfo->Architecture                   = ArmCacheArchitecture();
  32     CacheInfo->DataCachePresent               = ArmDataCachePresent();
  33     CacheInfo->DataCacheSize                  = ArmDataCacheSize();
  34     CacheInfo->DataCacheAssociativity         = ArmDataCacheAssociativity();
  35     CacheInfo->DataCacheLineLength            = ArmDataCacheLineLength();
  36     CacheInfo->InstructionCachePresent        = ArmInstructionCachePresent();
  37     CacheInfo->InstructionCacheSize           = ArmInstructionCacheSize();
  38     CacheInfo->InstructionCacheAssociativity  = ArmInstructionCacheAssociativity();
  39     CacheInfo->InstructionCacheLineLength     = ArmInstructionCacheLineLength();
  40   }
  41 }
  42
  43 VOID
  44 EFIAPI
  45 ArmSwitchProcessorMode (
  46   IN ARM_PROCESSOR_MODE Mode
  47   )
  48 {
  49   CPSRMaskInsert(ARM_PROCESSOR_MODE_MASK, Mode);
  50 }
  51
  52
  53 ARM_PROCESSOR_MODE
  54 EFIAPI
  55 ArmProcessorMode (
  56   VOID
  57   )
  58 {
  59   return (ARM_PROCESSOR_MODE)(CPSRRead() & (UINT32)ARM_PROCESSOR_MODE_MASK);
  60 }
  61
  62 VOID
  63 EFIAPI
  64 ArmSetAuxCrBit (
  65   IN  UINT32    Bits
  66   )
  67 {
  68   UINT32 val = ArmReadAuxCr();
  69   val |= Bits;
  70   ArmWriteAuxCr(val);
  71 }
  72