MdeModulePkg/Universal/Acpi/SmmS3SaveState/InternalSmmSaveState.h

   1 /** @file
   2   Internal header file for SMM S3 Boot Script Saver state driver.
   3
   4   Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
   5
   6   This program and the accompanying materials
   7   are licensed and made available under the terms and conditions
   8   of the BSD License which accompanies this distribution.  The
   9   full text of the license may be found at
  10   http://opensource.org/licenses/bsd-license.php
  11
  12   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  13   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  14
  15 **/
  16 #ifndef _INTERNAL_SMM_S3_SAVE_STATE_H_
  17 #define _INTERNAL_SMM_S3_SAVE_STATE_H_
  18 #include <PiDxe.h>
  19
  20 #include <Protocol/S3SmmSaveState.h>
  21
  22 #include <Library/BaseLib.h>
  23 #include <Library/DebugLib.h>
  24 #include <Library/UefiDriverEntryPoint.h>
  25 #include <Library/SmmServicesTableLib.h>
  26 #include <Library/S3BootScriptLib.h>
  27 #include <Library/PcdLib.h>
  28 #include <Library/SmbusLib.h>
  29 #include <IndustryStandard/SmBus.h>
  30 /**
  31   Adds a record into S3 boot script table.
  32
  33   This function is used to store a boot script record into a given boot
  34   script table. If the table specified by TableName is nonexistent in the
  35   system, a new table will automatically be created and then the script record
  36   will be added into the new table. This function is responsible for allocating
  37   necessary memory for the script.
  38
  39   This function has a variable parameter list. The exact parameter list depends on
  40   the OpCode that is passed into the function. If an unsupported OpCode or illegal
  41   parameter list is passed in, this function returns EFI_INVALID_PARAMETER.
  42   If there are not enough resources available for storing more scripts, this function returns
  43   EFI_OUT_OF_RESOURCES.
  44
  45   @param  This                  A pointer to the EFI_S3_SAVE_STATE_PROTOCOL instance.
  46   @param  OpCode                The operation code (opcode) number.
  47   @param  ...                   Argument list that is specific to each opcode.
  48
  49   @retval EFI_SUCCESS           The operation succeeded. A record was added into the
  50                                 specified script table.
  51   @retval EFI_INVALID_PARAMETER The parameter is illegal or the given boot script is not supported.
  52                                 If the opcode is unknow or not supported because of the PCD
  53                                 Feature Flags.
  54   @retval EFI_OUT_OF_RESOURCES  There is insufficient memory to store the boot script.
  55
  56 **/
  57 EFI_STATUS
  58 EFIAPI
  59 BootScriptWrite (
  60   IN CONST EFI_S3_SAVE_STATE_PROTOCOL      *This,
  61   IN       UINT16                           OpCode,
  62   ...
  63   );
  64 /**
  65   Insert a record into a specified Framework boot script table.
  66
  67   This function is used to store an OpCode to be replayed as part of the S3 resume boot path. It is
  68   assumed this protocol has platform specific mechanism to store the OpCode set and replay them
  69   during the S3 resume.
  70   The opcode is inserted before or after the specified position in the boot script table. If Position is
  71   NULL then that position is after the last opcode in the table (BeforeOrAfter is FALSE) or before
  72   the first opcode in the table (BeforeOrAfter is TRUE). The position which is pointed to by
  73   Position upon return can be used for subsequent insertions.
  74
  75   @param  This                  A pointer to the EFI_S3_SAVE_STATE_PROTOCOL instance.
  76   @param  BeforeOrAfter         Specifies whether the opcode is stored before (TRUE) or after (FALSE) the position
  77                                 in the boot script table specified by Position. If Position is NULL or points to
  78                                 NULL then the new opcode is inserted at the beginning of the table (if TRUE) or end
  79                                 of the table (if FALSE).
  80   @param  Position              On entry, specifies the position in the boot script table where the opcode will be
  81                                 inserted, either before or after, depending on BeforeOrAfter. On exit, specifies
  82                                 the position of the inserted opcode in the boot script table.
  83   @param  OpCode                The operation code (opcode) number.
  84   @param  ...                   Argument list that is specific to each opcode.
  85
  86   @retval EFI_SUCCESS           The operation succeeded. A record was added into the
  87                                 specified script table.
  88   @retval EFI_INVALID_PARAMETER The Opcode is an invalid opcode value or the Position is not a valid position in the boot script table..
  89   @retval EFI_OUT_OF_RESOURCES  There is insufficient memory to store the boot script.
  90
  91 **/
  92 EFI_STATUS
  93 EFIAPI
  94 BootScriptInsert (
  95   IN CONST EFI_S3_SAVE_STATE_PROTOCOL      *This,
  96   IN       BOOLEAN                          BeforeOrAfter,
  97   IN OUT   EFI_S3_BOOT_SCRIPT_POSITION     *Position OPTIONAL,
  98   IN       UINT16                           OpCode,
  99   ...
 100   );
 101 /**
 102   Find a label within the boot script table and, if not present, optionally create it.
 103
 104   If the label Label is already exists in the boot script table, then no new label is created, the
 105   position of the Label is returned in *Position and EFI_SUCCESS is returned.
 106   If the label Label does not already exist and CreateIfNotFound is TRUE, then it will be
 107   created before or after the specified position and EFI_SUCCESS is returned.
 108   If the label Label does not already exist and CreateIfNotFound is FALSE, then
 109   EFI_NOT_FOUND is returned.
 110
 111   @param  This                  A pointer to the EFI_S3_SAVE_STATE_PROTOCOL instance.
 112   @param  BeforeOrAfter         Specifies whether the label is stored before (TRUE) or after (FALSE) the position in
 113                                 the boot script table specified by Position. If Position is NULL or points to
 114                                 NULL then the new label is inserted at the beginning of the table (if TRUE) or end of
 115                                 the table (if FALSE).
 116   @param  CreateIfNotFound      Specifies whether the label will be created if the label does not exists (TRUE) or not
 117                                 (FALSE).
 118   @param  Position              On entry, specifies the position in the boot script table where the label will be inserted,
 119                                 either before or after, depending on BeforeOrAfter. On exit, specifies the position
 120                                 of the inserted label in the boot script table.
 121   @param  Label                 Points to the label which will be inserted in the boot script table.
 122
 123   @retval EFI_SUCCESS           The label already exists or was inserted.
 124   @retval EFI_INVALID_PARAMETER The Opcode is an invalid opcode value or the Position is not a valid position in the boot script table..
 125
 126 **/
 127 EFI_STATUS
 128 EFIAPI
 129 BootScriptLabel (
 130   IN CONST EFI_S3_SAVE_STATE_PROTOCOL           *This,
 131   IN       BOOLEAN                               BeforeOrAfter,
 132   IN       BOOLEAN                               CreateIfNotFound,
 133   IN OUT   EFI_S3_BOOT_SCRIPT_POSITION          *Position OPTIONAL,
 134   IN CONST CHAR8                                *Label
 135   );
 136 /**
 137   Compare two positions in the boot script table and return their relative position.
 138
 139   This function compares two positions in the boot script table and returns their relative positions. If
 140   Position1 is before Position2, then -1 is returned. If Position1 is equal to Position2,
 141   then 0 is returned. If Position1 is after Position2, then 1 is returned.
 142
 143   @param  This                  A pointer to the EFI_S3_SAVE_STATE_PROTOCOL instance.
 144   @param  Position1             The positions in the boot script table to compare
 145   @param  Position2             The positions in the boot script table to compare
 146   @param  RelativePosition      On return, points to the result of the comparison
 147
 148   @retval EFI_SUCCESS           The operation succeeded.
 149   @retval EFI_INVALID_PARAMETER The Position1 or Position2 is not a valid position in the boot script table.
 150
 151 **/
 152 EFI_STATUS
 153 EFIAPI
 154 BootScriptCompare (
 155   IN CONST EFI_S3_SAVE_STATE_PROTOCOL      *This,
 156   IN       EFI_S3_BOOT_SCRIPT_POSITION      Position1,
 157   IN       EFI_S3_BOOT_SCRIPT_POSITION      Position2,
 158   OUT      UINTN                           *RelativePosition
 159   );
 160
 161 #endif //_INTERNAL_SMM_S3_SAVE_STATE_H_