#include "InternalSmmSaveState.h"

Functions
EFI_STATUS	BootScriptWriteIoWrite (IN VA_LIST Marker)

EFI_STATUS	BootScriptWriteIoReadWrite (IN VA_LIST Marker)

EFI_STATUS	BootScriptWriteMemWrite (IN VA_LIST Marker)

EFI_STATUS	BootScriptWriteMemReadWrite (IN VA_LIST Marker)

EFI_STATUS	BootScriptWritePciCfgWrite (IN VA_LIST Marker)

EFI_STATUS	BootScriptWritePciCfgReadWrite (IN VA_LIST Marker)

EFI_STATUS	BootScriptWritePciCfg2Write (IN VA_LIST Marker)

EFI_STATUS	BootScriptWritePciCfg2ReadWrite (IN VA_LIST Marker)

EFI_STATUS	BootScriptWriteSmbusExecute (IN VA_LIST Marker)

EFI_STATUS	BootScriptWriteStall (IN VA_LIST Marker)

EFI_STATUS	BootScriptWriteDispatch (IN VA_LIST Marker)

EFI_STATUS	BootScriptWriteMemPoll (IN VA_LIST Marker)

EFI_STATUS	BootScriptWriteDispatch2 (IN VA_LIST Marker)

EFI_STATUS	BootScriptWriteInformation (IN VA_LIST Marker)

EFI_STATUS	BootScriptWriteIoPoll (IN VA_LIST Marker)

EFI_STATUS	BootScriptWritePciConfigPoll (IN VA_LIST Marker)

EFI_STATUS	BootScriptWritePciConfig2Poll (IN VA_LIST Marker)

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)

EFI_STATUS EFIAPI	InitializeSmmS3SaveState (IN EFI_HANDLE ImageHandle, IN EFI_SYSTEM_TABLE *SystemTable)

Variables
EFI_S3_SMM_SAVE_STATE_PROTOCOL	mS3SmmSaveState

Detailed Description

Implementation for S3 SMM Boot Script Saver state driver.

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

Definition in file SmmS3SaveState.c.

Function Documentation

◆ 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.
EFI_INVALID_PARAMETER	The RelativePosition is NULL.

Definition at line 885 of file SmmS3SaveState.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 696 of file SmmS3SaveState.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 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 855 of file SmmS3SaveState.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 542 of file SmmS3SaveState.c.

◆ BootScriptWriteDispatch()

EFI_STATUS BootScriptWriteDispatch ( IN VA_LIST Marker )

Internal function to add Save jmp address according to DISPATCH_OPCODE. We ignore "Context" parameter

Parameters

Marker The variable argument list to get the opcode and associated attributes.

Return values

EFI_OUT_OF_RESOURCES	Not enough resource to do operation.
EFI_SUCCESS	Opcode is added.

Definition at line 314 of file SmmS3SaveState.c.

◆ BootScriptWriteDispatch2()

EFI_STATUS BootScriptWriteDispatch2 ( IN VA_LIST Marker )

Internal function to add Save jmp address according to DISPATCH_OPCODE2. The "Context" parameter is not ignored.

Parameters

Marker The variable argument list to get the opcode and associated attributes.

Return values

EFI_OUT_OF_RESOURCES	Not enough resource to do operation.
EFI_SUCCESS	Opcode is added.

Definition at line 386 of file SmmS3SaveState.c.

◆ BootScriptWriteInformation()

EFI_STATUS BootScriptWriteInformation ( IN VA_LIST Marker )

Internal function to add INFORAMTION opcode node to the table list.

Parameters

Marker The variable argument list to get the opcode and associated attributes.

Return values

EFI_OUT_OF_RESOURCES	Not enought resource to complete the operations.
EFI_SUCCESS	The opcode entry is added to the table successfully.

Definition at line 410 of file SmmS3SaveState.c.

◆ BootScriptWriteIoPoll()

EFI_STATUS BootScriptWriteIoPoll ( IN VA_LIST Marker )

Internal function to add IO poll opcode node to the table

Parameters

Marker The variable argument list to get the opcode and associated attributes.

Return values

EFI_OUT_OF_RESOURCES	Not enought resource to complete the operations.
EFI_SUCCESS	The opcode entry is added to the table successfully.

Definition at line 432 of file SmmS3SaveState.c.

◆ BootScriptWriteIoReadWrite()

EFI_STATUS BootScriptWriteIoReadWrite ( IN VA_LIST Marker )

Internal function to add IO read/write opcode to the table.

Parameters

Marker The variable argument list to get the opcode and associated attributes.

Return values

EFI_OUT_OF_RESOURCES	Not enough resource to do operation.
EFI_SUCCESS	Opcode is added.

Definition at line 57 of file SmmS3SaveState.c.

◆ BootScriptWriteIoWrite()

EFI_STATUS BootScriptWriteIoWrite ( IN VA_LIST Marker )

Internal function to add IO write opcode to the table.

Parameters

Marker The variable argument list to get the opcode and associated attributes.

Return values

EFI_OUT_OF_RESOURCES	Not enough resource to do operation.
EFI_SUCCESS	Opcode is added.

Definition at line 29 of file SmmS3SaveState.c.

◆ BootScriptWriteMemPoll()

EFI_STATUS BootScriptWriteMemPoll ( IN VA_LIST Marker )

Internal function to add memory pool operation to the table.

Parameters

Marker The variable argument list to get the opcode and associated attributes.

Return values

EFI_OUT_OF_RESOURCES	Not enough resource to do operation.
EFI_SUCCESS	Opcode is added.

Definition at line 335 of file SmmS3SaveState.c.

◆ BootScriptWriteMemReadWrite()

EFI_STATUS BootScriptWriteMemReadWrite ( IN VA_LIST Marker )

Internal function to add memory read/write opcode to the table.

Parameters

Marker The variable argument list to get the opcode and associated attributes.

Return values

EFI_OUT_OF_RESOURCES	Not enough resource to do operation.
EFI_SUCCESS	Opcode is added.

Definition at line 113 of file SmmS3SaveState.c.

◆ BootScriptWriteMemWrite()

EFI_STATUS BootScriptWriteMemWrite ( IN VA_LIST Marker )

Internal function to add memory write opcode to the table.

Parameters

Marker The variable argument list to get the opcode and associated attributes.

Return values

EFI_OUT_OF_RESOURCES	Not enough resource to do operation.
EFI_SUCCESS	Opcode is added.

Definition at line 85 of file SmmS3SaveState.c.

◆ BootScriptWritePciCfg2ReadWrite()

EFI_STATUS BootScriptWritePciCfg2ReadWrite ( IN VA_LIST Marker )

Internal function to PciCfg2 read/write opcode to the table.

Parameters

Marker The variable argument list to get the opcode and associated attributes.

Return values

EFI_OUT_OF_RESOURCES	Not enough resource to do operation.
EFI_SUCCESS	Opcode is added.

Definition at line 227 of file SmmS3SaveState.c.

◆ BootScriptWritePciCfg2Write()

EFI_STATUS BootScriptWritePciCfg2Write ( IN VA_LIST Marker )

Internal function to add PciCfg2 write opcode to the table.

Parameters

Marker The variable argument list to get the opcode and associated attributes.

Return values

EFI_OUT_OF_RESOURCES	Not enough resource to do operation.
EFI_SUCCESS	Opcode is added.

Definition at line 197 of file SmmS3SaveState.c.

◆ BootScriptWritePciCfgReadWrite()

EFI_STATUS BootScriptWritePciCfgReadWrite ( IN VA_LIST Marker )

Internal function to PciCfg read/write opcode to the table.

Parameters

Marker The variable argument list to get the opcode and associated attributes.

Return values

EFI_OUT_OF_RESOURCES	Not enough resource to do operation.
EFI_SUCCESS	Opcode is added.

Definition at line 169 of file SmmS3SaveState.c.

◆ BootScriptWritePciCfgWrite()

EFI_STATUS BootScriptWritePciCfgWrite ( IN VA_LIST Marker )

Internal function to add PciCfg write opcode to the table.

Parameters

Marker The variable argument list to get the opcode and associated attributes.

Return values

EFI_OUT_OF_RESOURCES	Not enough resource to do operation.
EFI_SUCCESS	Opcode is added.

Definition at line 141 of file SmmS3SaveState.c.

◆ BootScriptWritePciConfig2Poll()

EFI_STATUS BootScriptWritePciConfig2Poll ( IN VA_LIST Marker )

Internal function to add PCI config 2 poll opcode node to the table

Parameters

Marker The variable argument list to get the opcode and associated attributes.

Return values

EFI_OUT_OF_RESOURCES	Not enought resource to complete the operations.
EFI_SUCCESS	The opcode entry is added to the table successfully.

Definition at line 492 of file SmmS3SaveState.c.

◆ BootScriptWritePciConfigPoll()

EFI_STATUS BootScriptWritePciConfigPoll ( IN VA_LIST Marker )

Internal function to add PCI config poll opcode node to the table

Parameters

Marker The variable argument list to get the opcode and associated attributes.

Return values

EFI_OUT_OF_RESOURCES	Not enought resource to complete the operations.
EFI_SUCCESS	The opcode entry is added to the table successfully.

Definition at line 462 of file SmmS3SaveState.c.

◆ BootScriptWriteSmbusExecute()

EFI_STATUS BootScriptWriteSmbusExecute ( IN VA_LIST Marker )

Internal function to add smbus execute opcode to the table.

Parameters

Marker The variable argument list to get the opcode and associated attributes.

Return values

EFI_OUT_OF_RESOURCES	Not enough resource to do operation.
EFI_SUCCESS	Opcode is added.

Definition at line 257 of file SmmS3SaveState.c.

◆ BootScriptWriteStall()

EFI_STATUS BootScriptWriteStall ( IN VA_LIST Marker )

Internal function to add stall opcode to the table.

Parameters

Marker The variable argument list to get the opcode and associated attributes.

Return values

EFI_OUT_OF_RESOURCES	Not enough resource to do operation.
EFI_SUCCESS	Opcode is added.

Definition at line 291 of file SmmS3SaveState.c.

◆ InitializeSmmS3SaveState()

EFI_STATUS EFIAPI InitializeSmmS3SaveState	(	IN EFI_HANDLE	ImageHandle,
		IN EFI_SYSTEM_TABLE *	SystemTable
	)

This routine is entry point of ScriptSave driver.

Parameters

ImageHandle	Handle for this drivers loaded image protocol.
SystemTable	EFI system table.

Return values

EFI_OUT_OF_RESOURCES	No enough resource
EFI_SUCCESS	Succesfully installed the ScriptSave driver.
other	Errors occurred.

Definition at line 908 of file SmmS3SaveState.c.

Variable Documentation

◆ mS3SmmSaveState

EFI_S3_SMM_SAVE_STATE_PROTOCOL mS3SmmSaveState

Initial value:

= {
  BootScriptWrite,
  BootScriptInsert,
  BootScriptLabel,
  BootScriptCompare
}

Definition at line 11 of file SmmS3SaveState.c.

Functions

Variables

Detailed Description

Function Documentation

◆ BootScriptCompare()

◆ BootScriptInsert()

◆ BootScriptLabel()

◆ BootScriptWrite()

◆ BootScriptWriteDispatch()

◆ BootScriptWriteDispatch2()

◆ BootScriptWriteInformation()

◆ BootScriptWriteIoPoll()

◆ BootScriptWriteIoReadWrite()

◆ BootScriptWriteIoWrite()

◆ BootScriptWriteMemPoll()

◆ BootScriptWriteMemReadWrite()

◆ BootScriptWriteMemWrite()

◆ BootScriptWritePciCfg2ReadWrite()

◆ BootScriptWritePciCfg2Write()

◆ BootScriptWritePciCfgReadWrite()

◆ BootScriptWritePciCfgWrite()

◆ BootScriptWritePciConfig2Poll()

◆ BootScriptWritePciConfigPoll()

◆ BootScriptWriteSmbusExecute()

◆ BootScriptWriteStall()

◆ InitializeSmmS3SaveState()

Variable Documentation

◆ mS3SmmSaveState