#include <PiDxe.h>
#include <Protocol/S3SaveState.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/UefiDriverEntryPoint.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/S3BootScriptLib.h>
#include <Library/SmbusLib.h>
#include <Library/PcdLib.h>
#include <IndustryStandard/SmBus.h>
#include <Guid/EventGroup.h>

Functions
VOID EFIAPI	AcpiS3ContextSaveOnEndOfDxe (IN EFI_EVENT Event, IN VOID *Context)

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

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

EFI_STATUS EFIAPI	BootScriptLabel (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)

EFI_STATUS EFIAPI	BootScriptCompare (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)

Detailed Description

Internal header file for S3 Boot Script Saver state driver.

SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file InternalS3SaveState.h.

Function Documentation

◆ AcpiS3ContextSaveOnEndOfDxe()

VOID EFIAPI AcpiS3ContextSaveOnEndOfDxe	(	IN EFI_EVENT	Event,
		IN VOID *	Context
	)

Callback function executed when the EndOfDxe event group is signaled.

Parameters

[in]	Event	Event whose notification function is being invoked.
[in]	Context	The pointer to the notification function's context, which is implementation-dependent.

Definition at line 230 of file AcpiS3ContextSave.c.

◆ BootScriptCompare()

EFI_STATUS EFIAPI BootScriptCompare	(	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

This	A pointer to the EFI_S3_SAVE_STATE_PROTOCOL instance.
Position1	The positions in the boot script table to compare
Position2	The positions in the boot script table to compare
RelativePosition	On return, points to the result of the comparison

Return values

EFI_SUCCESS	The operation succeeded.
EFI_INVALID_PARAMETER	The Position1 or Position2 is not a valid position in the boot script table.

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

This	A pointer to the EFI_S3_SAVE_STATE_PROTOCOL instance.
Position1	The positions in the boot script table to compare
Position2	The positions in the boot script table to compare
RelativePosition	On return, points to the result of the comparison

Return values

EFI_SUCCESS	The operation succeeded.
EFI_INVALID_PARAMETER	The Position1 or Position2 is not a valid position in the boot script table.
EFI_INVALID_PARAMETER	The RelativePosition is NULL.

Definition at line 886 of file S3SaveState.c.

◆ BootScriptInsert()

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

Insert a record into a specified Framework boot script table.

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 FALSE) or before the first opcode in the table (BeforeOrAfter is TRUE). The position which is pointed to by Position upon return can be used for subsequent insertions.

Parameters

This	A pointer to the EFI_S3_SAVE_STATE_PROTOCOL instance.
BeforeOrAfter	Specifies 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).
Position	On 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.
OpCode	The operation code (opcode) number.
...	Argument list that is specific to each opcode.

Return values

EFI_SUCCESS	The operation succeeded. A record was added into the specified script table.
EFI_INVALID_PARAMETER	The Opcode is an invalid opcode value or the Position is not a valid position in the boot script table..
EFI_OUT_OF_RESOURCES	There is insufficient memory to store the boot script.

Definition at line 697 of file S3SaveState.c.

◆ BootScriptLabel()

EFI_STATUS EFIAPI BootScriptLabel	(	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

This	A pointer to the EFI_S3_SAVE_STATE_PROTOCOL instance.
BeforeOrAfter	Specifies 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).
CreateIfNotFound	Specifies whether the label will be created if the label does not exists (TRUE) or not (FALSE).
Position	On 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.
Label	Points to the label which will be inserted in the boot script table.

Return values

EFI_SUCCESS	The label already exists or was inserted.
EFI_INVALID_PARAMETER	The Opcode is an invalid opcode value or the Position is not a valid position in the boot script table..

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

This	A pointer to the EFI_S3_SAVE_STATE_PROTOCOL instance.
BeforeOrAfter	Specifies 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).
CreateIfNotFound	Specifies whether the label will be created if the label does not exists (TRUE) or not (FALSE).
Position	On 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.
Label	Points to the label which will be inserted in the boot script table.

Return values

EFI_SUCCESS	The label already exists or was inserted.
EFI_INVALID_PARAMETER	The Label is NULL or points to an empty string.
EFI_INVALID_PARAMETER	The Position is not a valid position in the boot script table.

Definition at line 856 of file S3SaveState.c.

◆ BootScriptWrite()

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

Adds a record into S3 boot script table.

This function is used to store a boot script record into a given boot script table. If the table specified by TableName is nonexistent in the system, a new table will automatically be created and then the script record will be added into the new table. This function is responsible for allocating necessary memory for the script.

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.

Parameters

This	A pointer to the EFI_S3_SAVE_STATE_PROTOCOL instance.
OpCode	The operation code (opcode) number.
...	Argument list that is specific to each opcode.

Return values

EFI_SUCCESS	The operation succeeded. A record was added into the specified script table.
EFI_INVALID_PARAMETER	The parameter is illegal or the given boot script is not supported. If the opcode is unknow or not supported because of the PCD Feature Flags.
EFI_OUT_OF_RESOURCES	There is insufficient memory to store the boot script.

Definition at line 543 of file S3SaveState.c.

Functions

Detailed Description

Function Documentation

◆ AcpiS3ContextSaveOnEndOfDxe()

◆ BootScriptCompare()

◆ BootScriptInsert()

◆ BootScriptLabel()

◆ BootScriptWrite()