TianoCore EDK2 master
Loading...
Searching...
No Matches
S3SaveState.h File Reference

Go to the source code of this file.

Data Structures

struct  _EFI_S3_SAVE_STATE_PROTOCOL
 

Macros

#define EFI_S3_SAVE_STATE_PROTOCOL_GUID    { 0xe857caf6, 0xc046, 0x45dc, { 0xbe, 0x3f, 0xee, 0x7, 0x65, 0xfb, 0xa8, 0x87 }}
 

Typedefs

typedef VOID * EFI_S3_BOOT_SCRIPT_POSITION
 
typedef struct _EFI_S3_SAVE_STATE_PROTOCOL EFI_S3_SAVE_STATE_PROTOCOL
 
typedef EFI_STATUS(EFIAPI * EFI_S3_SAVE_STATE_WRITE) (IN CONST EFI_S3_SAVE_STATE_PROTOCOL *This, IN UINTN OpCode,...)
 
typedef EFI_STATUS(EFIAPI * EFI_S3_SAVE_STATE_INSERT) (IN CONST EFI_S3_SAVE_STATE_PROTOCOL *This, IN BOOLEAN BeforeOrAfter, IN OUT EFI_S3_BOOT_SCRIPT_POSITION *Position OPTIONAL, IN UINTN OpCode,...)
 
typedef EFI_STATUS(EFIAPI * EFI_S3_SAVE_STATE_LABEL) (IN CONST EFI_S3_SAVE_STATE_PROTOCOL *This, IN BOOLEAN BeforeOrAfter, IN BOOLEAN CreateIfNotFound, IN OUT EFI_S3_BOOT_SCRIPT_POSITION *Position OPTIONAL, IN CONST CHAR8 *Label)
 
typedef EFI_STATUS(EFIAPI * EFI_S3_SAVE_STATE_COMPARE) (IN CONST EFI_S3_SAVE_STATE_PROTOCOL *This, IN EFI_S3_BOOT_SCRIPT_POSITION Position1, IN EFI_S3_BOOT_SCRIPT_POSITION Position2, OUT UINTN *RelativePosition)
 

Variables

EFI_GUID gEfiS3SaveStateProtocolGuid
 

Detailed Description

S3 Save State Protocol as defined in PI 1.6(Errata A) Specification VOLUME 5 Standard.

This protocol is used by DXE PI module to store or record various IO operations to be replayed during an S3 resume. This protocol is not required for all platforms.

Copyright (c) 2009 - 2019, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Revision Reference:
This PPI is defined in UEFI Platform Initialization Specification 1.2 Volume 5: Standards

Definition in file S3SaveState.h.

Macro Definition Documentation

◆ EFI_S3_SAVE_STATE_PROTOCOL_GUID

#define EFI_S3_SAVE_STATE_PROTOCOL_GUID    { 0xe857caf6, 0xc046, 0x45dc, { 0xbe, 0x3f, 0xee, 0x7, 0x65, 0xfb, 0xa8, 0x87 }}

Definition at line 20 of file S3SaveState.h.

Typedef Documentation

◆ EFI_S3_BOOT_SCRIPT_POSITION

typedef VOID* EFI_S3_BOOT_SCRIPT_POSITION

Definition at line 23 of file S3SaveState.h.

◆ EFI_S3_SAVE_STATE_COMPARE

typedef EFI_STATUS(EFIAPI * EFI_S3_SAVE_STATE_COMPARE) (IN CONST EFI_S3_SAVE_STATE_PROTOCOL *This, IN EFI_S3_BOOT_SCRIPT_POSITION Position1, IN EFI_S3_BOOT_SCRIPT_POSITION Position2, OUT UINTN *RelativePosition)

Compare two positions in the boot script table and return their relative position.

This function compares two positions in the boot script table and returns their relative positions. If Position1 is before Position2, then -1 is returned. If Position1 is equal to Position2, then 0 is returned. If Position1 is after Position2, then 1 is returned.

Parameters
[in]ThisA pointer to the EFI_S3_SAVE_STATE_PROTOCOL instance.
[in]Position1The positions in the boot script table to compare.
[in]Position2The positions in the boot script table to compare.
[out]RelativePositionOn return, points to the result of the comparison.
Return values
EFI_SUCCESSThe operation succeeded.
EFI_INVALID_PARAMETERThe Position1 or Position2 is not a valid position in the boot script table.
EFI_INVALID_PARAMETERThe RelativePosition is NULL.

Definition at line 152 of file S3SaveState.h.

◆ EFI_S3_SAVE_STATE_INSERT

typedef EFI_STATUS(EFIAPI * EFI_S3_SAVE_STATE_INSERT) (IN CONST EFI_S3_SAVE_STATE_PROTOCOL *This, IN BOOLEAN BeforeOrAfter, IN OUT EFI_S3_BOOT_SCRIPT_POSITION *Position OPTIONAL, IN UINTN OpCode,...)

Record operations that need to be replayed during an S3 resume.

This function is used to store an OpCode to be replayed as part of the S3 resume boot path. It is assumed this protocol has platform specific mechanism to store the OpCode set and replay them during the S3 resume. The opcode is inserted before or after the specified position in the boot script table. If Position is NULL then that position is after the last opcode in the table (BeforeOrAfter is TRUE) or before the first opcode in the table (BeforeOrAfter is FALSE). The position which is pointed to by Position upon return can be used for subsequent insertions.

This function has a variable parameter list. The exact parameter list depends on the OpCode that is passed into the function. If an unsupported OpCode or illegal parameter list is passed in, this function returns EFI_INVALID_PARAMETER. If there are not enough resources available for storing more scripts, this function returns EFI_OUT_OF_RESOURCES. OpCode values of 0x80 - 0xFE are reserved for implementation specific functions.

Parameters
[in]ThisA pointer to the EFI_S3_SAVE_STATE_PROTOCOL instance.
[in]BeforeOrAfterSpecifies whether the opcode is stored before (TRUE) or after (FALSE) the position in the boot script table specified by Position. If Position is NULL or points to NULL then the new opcode is inserted at the beginning of the table (if TRUE) or end of the table (if FALSE).
[in,out]PositionOn entry, specifies the position in the boot script table where the opcode will be inserted, either before or after, depending on BeforeOrAfter. On exit, specifies the position of the inserted opcode in the boot script table.
[in]OpCodeThe operation code (opcode) number. See "Related Definitions" in Write() for the defined opcode types.
[in]...Argument list that is specific to each opcode. See the following subsections for the definition of each opcode.
Return values
EFI_SUCCESSThe operation succeeded. An opcode was added into the script.
EFI_INVALID_PARAMETERThe Opcode is an invalid opcode value.
EFI_INVALID_PARAMETERThe Position is not a valid position in the boot script table.
EFI_OUT_OF_RESOURCESThere is insufficient memory to store the boot script table.

Definition at line 89 of file S3SaveState.h.

◆ EFI_S3_SAVE_STATE_LABEL

typedef EFI_STATUS(EFIAPI * EFI_S3_SAVE_STATE_LABEL) (IN CONST EFI_S3_SAVE_STATE_PROTOCOL *This, IN BOOLEAN BeforeOrAfter, IN BOOLEAN CreateIfNotFound, IN OUT EFI_S3_BOOT_SCRIPT_POSITION *Position OPTIONAL, IN CONST CHAR8 *Label)

Find a label within the boot script table and, if not present, optionally create it.

If the label Label is already exists in the boot script table, then no new label is created, the position of the Label is returned in *Position and EFI_SUCCESS is returned. If the label Label does not already exist and CreateIfNotFound is TRUE, then it will be created before or after the specified position and EFI_SUCCESS is returned. If the label Label does not already exist and CreateIfNotFound is FALSE, then EFI_NOT_FOUND is returned.

Parameters
[in]ThisA pointer to the EFI_S3_SAVE_STATE_PROTOCOL instance.
[in]BeforeOrAfterSpecifies whether the label is stored before (TRUE) or after (FALSE) the position in the boot script table specified by Position. If Position is NULL or points to NULL then the new label is inserted at the beginning of the table (if TRUE) or end of the table (if FALSE).
[in]CreateIfNotFoundSpecifies whether the label will be created if the label does not exists (TRUE) or not (FALSE).
[in,out]PositionOn entry, specifies the position in the boot script table where the label will be inserted, either before or after, depending on BeforeOrAfter. On exit, specifies the position of the inserted label in the boot script table.
[in]LabelPoints to the label which will be inserted in the boot script table.
Return values
EFI_SUCCESSThe label already exists or was inserted.
EFI_NOT_FOUNDThe label did not already exist and CreateifNotFound was FALSE.
EFI_INVALID_PARAMETERThe Label is NULL or points to an empty string.
EFI_INVALID_PARAMETERThe Position is not a valid position in the boot script table.
EFI_OUT_OF_RESOURCESThere is insufficient memory to store the boot script.

Definition at line 126 of file S3SaveState.h.

◆ EFI_S3_SAVE_STATE_PROTOCOL

Definition at line 25 of file S3SaveState.h.

◆ EFI_S3_SAVE_STATE_WRITE

typedef EFI_STATUS(EFIAPI * EFI_S3_SAVE_STATE_WRITE) (IN CONST EFI_S3_SAVE_STATE_PROTOCOL *This, IN UINTN OpCode,...)

Record operations that need to be replayed during an S3 resume.

This function is used to store an OpCode to be replayed as part of the S3 resume boot path. It is assumed this protocol has platform specific mechanism to store the OpCode set and replay them during the S3 resume.

Parameters
[in]ThisA pointer to the EFI_S3_SAVE_STATE_PROTOCOL instance.
[in]OpCodeThe operation code (opcode) number.
[in]...Argument list that is specific to each opcode. See the following subsections for the definition of each opcode.
Return values
EFI_SUCCESSThe operation succeeded. A record was added into the specified script table.
EFI_INVALID_PARAMETERThe parameter is illegal or the given boot script is not supported.
EFI_OUT_OF_RESOURCESThere is insufficient memory to store the boot script.

Definition at line 45 of file S3SaveState.h.