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

   1 /*++
   2
   3 Copyright (c) 2005 - 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
  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   mTransferControl.SetJump = TransferControlSetJump;
  88   mTransferControl.LongJump = TransferControlLongJump;
  89   return EFI_SUCCESS;
  90 }
  91
  92
  93 EFI_STATUS
  94 EFIAPI
  95 InstallEfiPeiFlushInstructionCache (
  96   IN OUT EFI_PEI_FLUSH_INSTRUCTION_CACHE_PROTOCOL  **This
  97   )
  98 /*++
  99
 100 Routine Description:
 101
 102   Installs the pointer to the flush instruction cache mechanism
 103
 104 Arguments:
 105
 106   This       - Pointer to flush instruction cache mechanism.
 107
 108 Returns:
 109
 110   This       - Pointer to flush instruction cache mechanism.
 111
 112 --*/
 113 {
 114   *This = &mFlushInstructionCache;
 115   mFlushInstructionCache.Flush = FlushInstructionCacheFlush;
 116   return EFI_SUCCESS;
 117 }
 118
 119
 120 EFI_STATUS
 121 EFIAPI
 122 FlushInstructionCacheFlush (
 123   IN EFI_PEI_FLUSH_INSTRUCTION_CACHE_PROTOCOL   *This,
 124   IN EFI_PHYSICAL_ADDRESS                       Start,
 125   IN UINT64                                     Length
 126   )
 127 /*++
 128
 129 Routine Description:
 130
 131   This routine would provide support for flushing the CPU instruction cache.
 132   In the case of IA32, this flushing is not necessary and is thus not implemented.
 133
 134 Arguments:
 135
 136   Pointer to CPU Architectural Protocol interface
 137   Start adddress in memory to flush
 138   Length of memory to flush
 139
 140 Returns:
 141
 142   Status
 143     EFI_SUCCESS
 144
 145 --*/
 146 {
 147   return EFI_SUCCESS;
 148 }
 149