EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/X64/Processor.c

   1 /*++
   2
   3 Copyright (c) 2005 - 2010, 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
  13 Module Name:
  14
  15     Processor.c
  16
  17 Abstract:
  18
  19 --*/
  20
  21 #include "Tiano.h"
  22 #include "EfiJump.h"
  23 #include EFI_GUID_DEFINITION (PeiFlushInstructionCache)
  24 #include EFI_GUID_DEFINITION (PeiTransferControl)
  25
  26 //
  27 // Prototypes
  28 //
  29 EFI_STATUS
  30 EFIAPI
  31 TransferControlSetJump (
  32   IN EFI_PEI_TRANSFER_CONTROL_PROTOCOL  *This,
  33   IN VOID                                           *Jump
  34   );
  35
  36 EFI_STATUS
  37 EFIAPI
  38 TransferControlLongJump (
  39   IN EFI_PEI_TRANSFER_CONTROL_PROTOCOL  *This,
  40   IN VOID                                           *Jump
  41   );
  42
  43 EFI_STATUS
  44 EFIAPI
  45 FlushInstructionCacheFlush (
  46   IN EFI_PEI_FLUSH_INSTRUCTION_CACHE_PROTOCOL *This,
  47   IN EFI_PHYSICAL_ADDRESS                     Start,
  48   IN UINT64                                   Length
  49   );
  50
  51 //
  52 // Table declarations
  53 //
  54 EFI_PEI_TRANSFER_CONTROL_PROTOCOL mTransferControl = {
  55   TransferControlSetJump,
  56   TransferControlLongJump,
  57   sizeof (EFI_JUMP_BUFFER)
  58 };
  59
  60 EFI_PEI_FLUSH_INSTRUCTION_CACHE_PROTOCOL  mFlushInstructionCache = {
  61   FlushInstructionCacheFlush
  62 };
  63
  64
  65 EFI_STATUS
  66 EFIAPI
  67 InstallEfiPeiTransferControl(
  68   IN OUT EFI_PEI_TRANSFER_CONTROL_PROTOCOL **This
  69   )
  70 /*++
  71
  72 Routine Description:
  73
  74   Installs the pointer to the transfer control mechanism
  75
  76 Arguments:
  77
  78   This       - Pointer to transfer control mechanism.
  79
  80 Returns:
  81
  82   This       - Pointer to transfer control mechanism.
  83
  84 --*/
  85 {
  86   *This = &mTransferControl;
  87   return EFI_SUCCESS;
  88 }
  89
  90
  91 EFI_STATUS
  92 EFIAPI
  93 InstallEfiPeiFlushInstructionCache (
  94   IN OUT EFI_PEI_FLUSH_INSTRUCTION_CACHE_PROTOCOL  **This
  95   )
  96 /*++
  97
  98 Routine Description:
  99
 100   Installs the pointer to the flush instruction cache mechanism
 101
 102 Arguments:
 103
 104   This       - Pointer to flush instruction cache mechanism.
 105
 106 Returns:
 107
 108   This       - Pointer to flush instruction cache mechanism.
 109
 110 --*/
 111 {
 112   *This = &mFlushInstructionCache;
 113   return EFI_SUCCESS;
 114 }
 115
 116
 117 EFI_STATUS
 118 EFIAPI
 119 FlushInstructionCacheFlush (
 120   IN EFI_PEI_FLUSH_INSTRUCTION_CACHE_PROTOCOL   *This,
 121   IN EFI_PHYSICAL_ADDRESS                       Start,
 122   IN UINT64                                     Length
 123   )
 124 /*++
 125
 126 Routine Description:
 127
 128   This routine would provide support for flushing the CPU instruction cache.
 129   In the case of IA32, this flushing is not necessary and is thus not implemented.
 130
 131 Arguments:
 132
 133   Pointer to CPU Architectural Protocol interface
 134   Start adddress in memory to flush
 135   Length of memory to flush
 136
 137 Returns:
 138
 139   Status
 140     EFI_SUCCESS
 141
 142 --*/
 143 {
 144   return EFI_SUCCESS;
 145 }
 146