Data Structures
struct	EFI_ACPI_SDT_HEADER

struct	_EFI_ACPI_SDT_PROTOCOL

Macros
#define	EFI_ACPI_SDT_PROTOCOL_GUID { 0xeb97088e, 0xcfdf, 0x49c6, { 0xbe, 0x4b, 0xd9, 0x6, 0xa5, 0xb2, 0xe, 0x86 }}

#define	EFI_ACPI_TABLE_VERSION_NONE (1 << 0)

#define	EFI_ACPI_TABLE_VERSION_1_0B (1 << 1)

#define	EFI_ACPI_TABLE_VERSION_2_0 (1 << 2)

#define	EFI_ACPI_TABLE_VERSION_3_0 (1 << 3)

#define	EFI_ACPI_TABLE_VERSION_4_0 (1 << 4)

#define	EFI_ACPI_TABLE_VERSION_5_0 (1 << 5)

#define	EFI_ACPI_DATA_TYPE_NONE 0

#define	EFI_ACPI_DATA_TYPE_OPCODE 1

#define	EFI_ACPI_DATA_TYPE_NAME_STRING 2

#define	EFI_ACPI_DATA_TYPE_OP 3

#define	EFI_ACPI_DATA_TYPE_UINT 4

#define	EFI_ACPI_DATA_TYPE_STRING 5

#define	EFI_ACPI_DATA_TYPE_CHILD 6

Typedefs
typedef UINT32	EFI_ACPI_TABLE_VERSION

typedef VOID *	EFI_ACPI_HANDLE

typedef UINT32	EFI_ACPI_DATA_TYPE

typedef EFI_STATUS(EFIAPI *	EFI_ACPI_NOTIFICATION_FN )(IN EFI_ACPI_SDT_HEADER *Table, IN EFI_ACPI_TABLE_VERSION Version, IN UINTN TableKey)

typedef EFI_STATUS(EFIAPI *	EFI_ACPI_GET_ACPI_TABLE2 )(IN UINTN Index, OUT EFI_ACPI_SDT_HEADER *Table, OUT EFI_ACPI_TABLE_VERSION Version, OUT UINTN *TableKey)

typedef EFI_STATUS(EFIAPI *	EFI_ACPI_REGISTER_NOTIFY )(IN BOOLEAN Register, IN EFI_ACPI_NOTIFICATION_FN Notification)

typedef EFI_STATUS(EFIAPI *	EFI_ACPI_OPEN )(IN VOID Buffer, OUT EFI_ACPI_HANDLE Handle)

typedef EFI_STATUS(EFIAPI *	EFI_ACPI_OPEN_SDT )(IN UINTN TableKey, OUT EFI_ACPI_HANDLE *Handle)

typedef EFI_STATUS(EFIAPI *	EFI_ACPI_CLOSE )(IN EFI_ACPI_HANDLE Handle)

typedef EFI_STATUS(EFIAPI *	EFI_ACPI_GET_CHILD )(IN EFI_ACPI_HANDLE ParentHandle, IN OUT EFI_ACPI_HANDLE *Handle)

typedef EFI_STATUS(EFIAPI *	EFI_ACPI_GET_OPTION )(IN EFI_ACPI_HANDLE Handle, IN UINTN Index, OUT EFI_ACPI_DATA_TYPE DataType, OUT CONST VOID Data, OUT UINTN DataSize)

typedef EFI_STATUS(EFIAPI *	EFI_ACPI_SET_OPTION )(IN EFI_ACPI_HANDLE Handle, IN UINTN Index, IN CONST VOID *Data, IN UINTN DataSize)

typedef EFI_STATUS(EFIAPI *	EFI_ACPI_FIND_PATH )(IN EFI_ACPI_HANDLE HandleIn, IN VOID AcpiPath, OUT EFI_ACPI_HANDLE HandleOut)

typedef struct _EFI_ACPI_SDT_PROTOCOL	EFI_ACPI_SDT_PROTOCOL

Variables
EFI_GUID	gEfiAcpiSdtProtocolGuid

Detailed Description

This protocol provides services for creating ACPI system description tables.

Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Revision Reference:: This Protocol was introduced in PI Specification 1.2.

Macro Definition Documentation

#define EFI_ACPI_DATA_TYPE_CHILD 6

#define EFI_ACPI_DATA_TYPE_NAME_STRING 2

#define EFI_ACPI_DATA_TYPE_NONE 0

#define EFI_ACPI_DATA_TYPE_OP 3

#define EFI_ACPI_DATA_TYPE_OPCODE 1

#define EFI_ACPI_DATA_TYPE_STRING 5

#define EFI_ACPI_DATA_TYPE_UINT 4

#define EFI_ACPI_SDT_PROTOCOL_GUID { 0xeb97088e, 0xcfdf, 0x49c6, { 0xbe, 0x4b, 0xd9, 0x6, 0xa5, 0xb2, 0xe, 0x86 }}

#define EFI_ACPI_TABLE_VERSION_1_0B (1 << 1)

#define EFI_ACPI_TABLE_VERSION_2_0 (1 << 2)

#define EFI_ACPI_TABLE_VERSION_3_0 (1 << 3)

#define EFI_ACPI_TABLE_VERSION_4_0 (1 << 4)

#define EFI_ACPI_TABLE_VERSION_5_0 (1 << 5)

#define EFI_ACPI_TABLE_VERSION_NONE (1 << 0)

Typedef Documentation

typedef EFI_STATUS(EFIAPI * EFI_ACPI_CLOSE)(IN EFI_ACPI_HANDLE Handle)

Close an ACPI handle.

Parameters

[in] Handle Returns the handle.

Return values

EFI_SUCCESS	Success
EFI_INVALID_PARAMETER	Handle is NULL or does not refer to a valid ACPI object.

typedef UINT32 EFI_ACPI_DATA_TYPE

typedef EFI_STATUS(EFIAPI * EFI_ACPI_FIND_PATH)(IN EFI_ACPI_HANDLE HandleIn, IN VOID *AcpiPath, OUT EFI_ACPI_HANDLE *HandleOut)

Returns the handle of the ACPI object representing the specified ACPI path

Parameters

[in]	HandleIn	Points to the handle of the object representing the starting point for the path search.
[in]	AcpiPath	Points to the ACPI path, which conforms to the ACPI encoded path format.
[out]	HandleOut	On return, points to the ACPI object which represents AcpiPath, relative to HandleIn.

Return values

EFI_SUCCESS	Success
EFI_INVALID_PARAMETER	HandleIn is NULL or does not refer to a valid ACPI object.

typedef EFI_STATUS(EFIAPI * EFI_ACPI_GET_ACPI_TABLE2)(IN UINTN Index, OUT EFI_ACPI_SDT_HEADER **Table, OUT EFI_ACPI_TABLE_VERSION *Version, OUT UINTN *TableKey)

Returns a requested ACPI table.

The GetAcpiTable() function returns a pointer to a buffer containing the ACPI table associated with the Index that was input. The following structures are not considered elements in the list of ACPI tables:

Root System Description Pointer (RSD_PTR)
Root System Description Table (RSDT)
Extended System Description Table (XSDT) Version is updated with a bit map containing all the versions of ACPI of which the table is a member. For tables installed via the EFI_ACPI_TABLE_PROTOCOL.InstallAcpiTable() interface, the function returns the value of EFI_ACPI_STD_PROTOCOL.AcpiVersion.

Parameters

[in]	Index	The zero-based index of the table to retrieve.
[out]	Table	Pointer for returning the table buffer.
[out]	Version	On return, updated with the ACPI versions to which this table belongs. Type EFI_ACPI_TABLE_VERSION is defined in "Related Definitions" in the EFI_ACPI_SDT_PROTOCOL.
[out]	TableKey	On return, points to the table key for the specified ACPI system definition table. This is identical to the table key used in the EFI_ACPI_TABLE_PROTOCOL. The TableKey can be passed to EFI_ACPI_TABLE_PROTOCOL.UninstallAcpiTable() to uninstall the table.

Return values

EFI_SUCCESS	The function completed successfully.
EFI_NOT_FOUND	The requested index is too large and a table was not found.

typedef EFI_STATUS(EFIAPI * EFI_ACPI_GET_CHILD)(IN EFI_ACPI_HANDLE ParentHandle, IN OUT EFI_ACPI_HANDLE *Handle)

Return the child ACPI objects.

Parameters

[in]	ParentHandle	Parent handle.
[in,out]	Handle	On entry, points to the previously returned handle or NULL to start with the first handle. On return, points to the next returned ACPI handle or NULL if there are no child objects.

Return values

EFI_SUCCESS	Success
EFI_INVALID_PARAMETER	ParentHandle is NULL or does not refer to a valid ACPI object.

typedef EFI_STATUS(EFIAPI * EFI_ACPI_GET_OPTION)(IN EFI_ACPI_HANDLE Handle, IN UINTN Index, OUT EFI_ACPI_DATA_TYPE *DataType, OUT CONST VOID **Data, OUT UINTN *DataSize)

Retrieve information about an ACPI object.

Parameters

[in]	Handle	ACPI object handle.
[in]	Index	Index of the data to retrieve from the object. In general, indexes read from left-to-right in the ACPI encoding, with index 0 always being the ACPI opcode.
[out]	DataType	Points to the returned data type or EFI_ACPI_DATA_TYPE_NONE if no data exists for the specified index.
[out]	Data	Upon return, points to the pointer to the data.
[out]	DataSize	Upon return, points to the size of Data.

Return values

typedef VOID* EFI_ACPI_HANDLE

typedef EFI_STATUS(EFIAPI * EFI_ACPI_NOTIFICATION_FN)(IN EFI_ACPI_SDT_HEADER *Table,IN EFI_ACPI_TABLE_VERSION Version,IN UINTN TableKey)

typedef EFI_STATUS(EFIAPI * EFI_ACPI_OPEN)(IN VOID *Buffer, OUT EFI_ACPI_HANDLE *Handle)

Create a handle from an ACPI opcode

Parameters

[in]	Buffer	Points to the ACPI opcode.
[out]	Handle	Upon return, holds the handle.

Return values

EFI_SUCCESS	Success
EFI_INVALID_PARAMETER	Buffer is NULL or Handle is NULL or Buffer points to an invalid opcode.

typedef EFI_STATUS(EFIAPI * EFI_ACPI_OPEN_SDT)(IN UINTN TableKey, OUT EFI_ACPI_HANDLE *Handle)

Create a handle for the first ACPI opcode in an ACPI system description table.

Parameters

[in]	TableKey	The table key for the ACPI table, as returned by GetTable().
[out]	Handle	On return, points to the newly created ACPI handle.

Return values

EFI_SUCCESS	Handle created successfully.
EFI_NOT_FOUND	TableKey does not refer to a valid ACPI table.

typedef EFI_STATUS(EFIAPI * EFI_ACPI_REGISTER_NOTIFY)(IN BOOLEAN Register, IN EFI_ACPI_NOTIFICATION_FN Notification)

Register or unregister a callback when an ACPI table is installed.

This function registers or unregisters a function which will be called whenever a new ACPI table is installed.

Parameters

[in]	Register	If TRUE, then the specified function will be registered. If FALSE, then the specified function will be unregistered.
[in]	Notification	Points to the callback function to be registered or unregistered.

Return values

EFI_SUCCESS	Callback successfully registered or unregistered.
EFI_INVALID_PARAMETER	Notification is NULL
EFI_INVALID_PARAMETER	Register is FALSE and Notification does not match a known registration function.

typedef struct _EFI_ACPI_SDT_PROTOCOL EFI_ACPI_SDT_PROTOCOL

typedef EFI_STATUS(EFIAPI * EFI_ACPI_SET_OPTION)(IN EFI_ACPI_HANDLE Handle, IN UINTN Index, IN CONST VOID *Data, IN UINTN DataSize)

Change information about an ACPI object.

Parameters

[in]	Handle	ACPI object handle.
[in]	Index	Index of the data to retrieve from the object. In general, indexes read from left-to-right in the ACPI encoding, with index 0 always being the ACPI opcode.
[in]	Data	Points to the data.
[in]	DataSize	The size of the Data.

Return values

EFI_SUCCESS	Success
EFI_INVALID_PARAMETER	Handle is NULL or does not refer to a valid ACPI object.
EFI_BAD_BUFFER_SIZE	Data cannot be accommodated in the space occupied by the option.

typedef UINT32 EFI_ACPI_TABLE_VERSION

Variable Documentation

EFI_GUID gEfiAcpiSdtProtocolGuid

Data Structures

Macros

Typedefs

Variables

Detailed Description

Macro Definition Documentation

Typedef Documentation

Variable Documentation