EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/Ipf/PeiServicePointer.c

   1 /*++
   2
   3 Copyright (c) 2007, 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     PeiServicePointer.c
  16
  17 Abstract:
  18
  19 --*/
  20
  21 #include "Tiano.h"
  22 #include "PeiApi.h"
  23 #include "PeiLib.h"
  24
  25
  26 #if (PI_SPECIFICATION_VERSION >= 0x00010000)
  27
  28 VOID
  29 SetPeiServicesTablePointer (
  30   IN EFI_PEI_SERVICES  **PeiServices
  31   )
  32 /*++
  33
  34 Routine Description:
  35
  36   Save PeiService pointer so that it can be retrieved anywhere.
  37
  38 Arguments:
  39
  40   PeiServices     - The direct pointer to PeiServiceTable.
  41   PhyscialAddress - The physcial address of variable PeiServices.
  42
  43 Returns:
  44   NONE
  45
  46 --*/
  47
  48 {
  49   //
  50   // For Itanium Processor Family processors, the EFI_PEI_SERVICES**
  51   // is stored in kernel register7.
  52   //
  53   AsmWriteKr7((UINT64)(UINTN)PeiServices);
  54 }
  55
  56
  57 EFI_PEI_SERVICES **
  58 GetPeiServicesTablePointer (
  59   VOID
  60   )
  61 /*++
  62
  63 Routine Description:
  64
  65   Get PeiService pointer.
  66
  67 Arguments:
  68
  69   NONE.
  70
  71 Returns:
  72   The direct pointer to PeiServiceTable.
  73
  74 --*/
  75
  76 {
  77   //
  78   // For Itanium Processor Family processors, the EFI_PEI_SERVICES**
  79   // is stored in kernel register7.
  80   //
  81   return (EFI_PEI_SERVICES **)(UINTN)AsmReadKr7();
  82 }
  83
  84 VOID
  85 MigrateIdtTable (
  86   IN EFI_PEI_SERVICES  **PeiServices
  87   )
  88 /*++
  89
  90 Routine Description:
  91
  92   Migrate IDT from temporary memory to real memory where preceded with 4 bytes for
  93   storing PeiService pointer.
  94
  95 Arguments:
  96
  97   PeiServices   - The direct pointer to PeiServiceTable.
  98
  99 Returns:
 100
 101   NONE.
 102
 103 --*/
 104 {
 105   return;
 106 }
 107
 108 #endif