EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/Ia32/Processor.c

   1 /*++
   2
   3 Copyright (c) 2004 - 2008, Intel Corporation. All rights reserved.<BR>
   4 This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12 Module Name:
  13
  14     Processor.c
  15
  16 Abstract:
  17
  18 --*/
  19
  20 #include "Tiano.h"
  21 #include "EfiJump.h"
  22 #include EFI_GUID_DEFINITION (PeiFlushInstructionCache)
  23 #include EFI_GUID_DEFINITION (PeiTransferControl)
  24
  25 //
  26 // Prototypes
  27 //
  28 EFI_STATUS
  29 EFIAPI
  30 TransferControlSetJump (
  31   IN EFI_PEI_TRANSFER_CONTROL_PROTOCOL  *This,
  32   IN VOID                                           *Jump
  33   );
  34
  35 EFI_STATUS
  36 EFIAPI
  37 TransferControlLongJump (
  38   IN EFI_PEI_TRANSFER_CONTROL_PROTOCOL  *This,
  39   IN VOID                                           *Jump
  40   );
  41
  42 EFI_STATUS
  43 EFIAPI
  44 FlushInstructionCacheFlush (
  45   IN EFI_PEI_FLUSH_INSTRUCTION_CACHE_PROTOCOL *This,
  46   IN EFI_PHYSICAL_ADDRESS                     Start,
  47   IN UINT64                                   Length
  48   );
  49
  50 //
  51 // Table declarations
  52 //
  53 EFI_PEI_TRANSFER_CONTROL_PROTOCOL         mTransferControl = {
  54   TransferControlSetJump,
  55   TransferControlLongJump,
  56   sizeof (EFI_JUMP_BUFFER)
  57 };
  58
  59 EFI_PEI_FLUSH_INSTRUCTION_CACHE_PROTOCOL  mFlushInstructionCache = {
  60   FlushInstructionCacheFlush
  61 };
  62
  63
  64 EFI_STATUS
  65 InstallEfiPeiTransferControl (
  66   IN OUT EFI_PEI_TRANSFER_CONTROL_PROTOCOL **This
  67   )
  68 /*++
  69
  70 Routine Description:
  71
  72   Installs the pointer to the transfer control mechanism
  73
  74 Arguments:
  75
  76   This       - Pointer to transfer control mechanism.
  77
  78 Returns:
  79
  80   EFI_SUCCESS     - Successfully installed.
  81
  82 --*/
  83 {
  84   *This = &mTransferControl;
  85   return EFI_SUCCESS;
  86 }
  87
  88 EFI_STATUS
  89 InstallEfiPeiFlushInstructionCache (
  90   IN OUT EFI_PEI_FLUSH_INSTRUCTION_CACHE_PROTOCOL  **This
  91   )
  92 /*++
  93
  94 Routine Description:
  95
  96   Installs the pointer to the flush instruction cache mechanism
  97
  98 Arguments:
  99
 100   This       - Pointer to flush instruction cache mechanism.
 101
 102 Returns:
 103
 104   EFI_SUCCESS     - Successfully installed
 105
 106 --*/
 107 {
 108   *This = &mFlushInstructionCache;
 109   return EFI_SUCCESS;
 110 }
 111
 112 EFI_STATUS
 113 EFIAPI
 114 FlushInstructionCacheFlush (
 115   IN EFI_PEI_FLUSH_INSTRUCTION_CACHE_PROTOCOL   *This,
 116   IN EFI_PHYSICAL_ADDRESS                       Start,
 117   IN UINT64                                     Length
 118   )
 119 /*++
 120
 121 Routine Description:
 122
 123   This routine would provide support for flushing the CPU instruction cache.
 124   In the case of IA32, this flushing is not necessary and is thus not implemented.
 125
 126 Arguments:
 127
 128   This      - Pointer to CPU Architectural Protocol interface
 129   Start     - Start adddress in memory to flush
 130   Length    - Length of memory to flush
 131
 132 Returns:
 133
 134   Status
 135     EFI_SUCCESS
 136
 137 --*/
 138 {
 139   return EFI_SUCCESS;
 140 }