xref: /freebsd/sys/contrib/edk2/Include/IndustryStandard/Acpi10.h (revision 3245fa21)

/** @file
  ACPI 1.0b definitions from the ACPI Specification, revision 1.0b

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

#ifndef _ACPI_1_0_H_
#define _ACPI_1_0_H_

#include <IndustryStandard/AcpiAml.h>

///
/// Common table header, this prefaces all ACPI tables, including FACS, but
/// excluding the RSD PTR structure.
///
typedef struct {
  UINT32  Signature;
  UINT32  Length;
} EFI_ACPI_COMMON_HEADER;

#pragma pack(1)
///
/// The common ACPI description table header.  This structure prefaces most ACPI tables.
///
typedef struct {
  UINT32  Signature;
  UINT32  Length;
  UINT8   Revision;
  UINT8   Checksum;
  UINT8   OemId[6];
  UINT64  OemTableId;
  UINT32  OemRevision;
  UINT32  CreatorId;
  UINT32  CreatorRevision;
} EFI_ACPI_DESCRIPTION_HEADER;
#pragma pack()

//
// Define for Descriptor
//
#define ACPI_SMALL_ITEM_FLAG                   0x00
#define ACPI_LARGE_ITEM_FLAG                   0x01

//
// Small Item Descriptor Name
//
#define ACPI_SMALL_IRQ_DESCRIPTOR_NAME                       0x04
#define ACPI_SMALL_DMA_DESCRIPTOR_NAME                       0x05
#define ACPI_SMALL_START_DEPENDENT_DESCRIPTOR_NAME           0x06
#define ACPI_SMALL_END_DEPENDENT_DESCRIPTOR_NAME             0x07
#define ACPI_SMALL_IO_PORT_DESCRIPTOR_NAME                   0x08
#define ACPI_SMALL_FIXED_IO_PORT_DESCRIPTOR_NAME             0x09
#define ACPI_SMALL_VENDOR_DEFINED_DESCRIPTOR_NAME            0x0E
#define ACPI_SMALL_END_TAG_DESCRIPTOR_NAME                   0x0F

//
// Large Item Descriptor Name
//
#define ACPI_LARGE_24_BIT_MEMORY_RANGE_DESCRIPTOR_NAME       0x01
#define ACPI_LARGE_VENDOR_DEFINED_DESCRIPTOR_NAME            0x04
#define ACPI_LARGE_32_BIT_MEMORY_RANGE_DESCRIPTOR_NAME       0x05
#define ACPI_LARGE_32_BIT_FIXED_MEMORY_RANGE_DESCRIPTOR_NAME 0x06
#define ACPI_LARGE_DWORD_ADDRESS_SPACE_DESCRIPTOR_NAME       0x07
#define ACPI_LARGE_WORD_ADDRESS_SPACE_DESCRIPTOR_NAME        0x08
#define ACPI_LARGE_EXTENDED_IRQ_DESCRIPTOR_NAME              0x09
#define ACPI_LARGE_QWORD_ADDRESS_SPACE_DESCRIPTOR_NAME       0x0A

//
// Small Item Descriptor Value
//
#define ACPI_IRQ_NOFLAG_DESCRIPTOR                0x22
#define ACPI_IRQ_DESCRIPTOR                       0x23
#define ACPI_DMA_DESCRIPTOR                       0x2A
#define ACPI_START_DEPENDENT_DESCRIPTOR           0x30
#define ACPI_START_DEPENDENT_EX_DESCRIPTOR        0x31
#define ACPI_END_DEPENDENT_DESCRIPTOR             0x38
#define ACPI_IO_PORT_DESCRIPTOR                   0x47
#define ACPI_FIXED_LOCATION_IO_PORT_DESCRIPTOR    0x4B
#define ACPI_END_TAG_DESCRIPTOR                   0x79

//
// Large Item Descriptor Value
//
#define ACPI_24_BIT_MEMORY_RANGE_DESCRIPTOR       0x81
#define ACPI_32_BIT_MEMORY_RANGE_DESCRIPTOR       0x85
#define ACPI_32_BIT_FIXED_MEMORY_RANGE_DESCRIPTOR 0x86
#define ACPI_DWORD_ADDRESS_SPACE_DESCRIPTOR       0x87
#define ACPI_WORD_ADDRESS_SPACE_DESCRIPTOR        0x88
#define ACPI_EXTENDED_INTERRUPT_DESCRIPTOR        0x89
#define ACPI_QWORD_ADDRESS_SPACE_DESCRIPTOR       0x8A
#define ACPI_ADDRESS_SPACE_DESCRIPTOR             0x8A

//
// Resource Type
//
#define ACPI_ADDRESS_SPACE_TYPE_MEM   0x00
#define ACPI_ADDRESS_SPACE_TYPE_IO    0x01
#define ACPI_ADDRESS_SPACE_TYPE_BUS   0x02

///
/// Power Management Timer frequency is fixed at 3.579545MHz.
///
#define ACPI_TIMER_FREQUENCY       3579545

//
// Ensure proper structure formats
//
#pragma pack(1)

///
/// The common definition of QWORD, DWORD, and WORD
/// Address Space Descriptors.
///
typedef PACKED struct {
  UINT8   Desc;
  UINT16  Len;
  UINT8   ResType;
  UINT8   GenFlag;
  UINT8   SpecificFlag;
  UINT64  AddrSpaceGranularity;
  UINT64  AddrRangeMin;
  UINT64  AddrRangeMax;
  UINT64  AddrTranslationOffset;
  UINT64  AddrLen;
} EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR;

typedef PACKED union {
  UINT8     Byte;
  PACKED struct {
    UINT8 Length : 3;
    UINT8 Name : 4;
    UINT8 Type : 1;
  } Bits;
} ACPI_SMALL_RESOURCE_HEADER;

typedef PACKED struct {
  PACKED union {
    UINT8 Byte;
    PACKED struct {
      UINT8 Name : 7;
      UINT8 Type : 1;
    }Bits;
  } Header;
  UINT16 Length;
} ACPI_LARGE_RESOURCE_HEADER;

///
/// IRQ Descriptor.
///
typedef PACKED struct {
  ACPI_SMALL_RESOURCE_HEADER   Header;
  UINT16                       Mask;
} EFI_ACPI_IRQ_NOFLAG_DESCRIPTOR;

///
/// IRQ Descriptor.
///
typedef PACKED struct {
  ACPI_SMALL_RESOURCE_HEADER   Header;
  UINT16                       Mask;
  UINT8                        Information;
} EFI_ACPI_IRQ_DESCRIPTOR;

///
/// DMA Descriptor.
///
typedef PACKED struct {
  ACPI_SMALL_RESOURCE_HEADER   Header;
  UINT8                        ChannelMask;
  UINT8                        Information;
} EFI_ACPI_DMA_DESCRIPTOR;

///
/// I/O Port Descriptor
///
typedef PACKED struct {
  ACPI_SMALL_RESOURCE_HEADER   Header;
  UINT8                        Information;
  UINT16                       BaseAddressMin;
  UINT16                       BaseAddressMax;
  UINT8                        Alignment;
  UINT8                        Length;
} EFI_ACPI_IO_PORT_DESCRIPTOR;

///
/// Fixed Location I/O Port Descriptor.
///
typedef PACKED struct {
  ACPI_SMALL_RESOURCE_HEADER   Header;
  UINT16                       BaseAddress;
  UINT8                        Length;
} EFI_ACPI_FIXED_LOCATION_IO_PORT_DESCRIPTOR;

///
/// 24-Bit Memory Range Descriptor
///
typedef PACKED struct {
  ACPI_LARGE_RESOURCE_HEADER    Header;
  UINT8                         Information;
  UINT16                        BaseAddressMin;
  UINT16                        BaseAddressMax;
  UINT16                        Alignment;
  UINT16                        Length;
} EFI_ACPI_24_BIT_MEMORY_RANGE_DESCRIPTOR;

///
/// 32-Bit Memory Range Descriptor
///
typedef PACKED struct {
  ACPI_LARGE_RESOURCE_HEADER    Header;
  UINT8                         Information;
  UINT32                        BaseAddressMin;
  UINT32                        BaseAddressMax;
  UINT32                        Alignment;
  UINT32                        Length;
} EFI_ACPI_32_BIT_MEMORY_RANGE_DESCRIPTOR;

///
/// Fixed 32-Bit Fixed Memory Range Descriptor
///
typedef PACKED struct {
  ACPI_LARGE_RESOURCE_HEADER    Header;
  UINT8                         Information;
  UINT32                        BaseAddress;
  UINT32                        Length;
} EFI_ACPI_32_BIT_FIXED_MEMORY_RANGE_DESCRIPTOR;

///
/// QWORD Address Space Descriptor
///
typedef PACKED struct {
  ACPI_LARGE_RESOURCE_HEADER    Header;
  UINT8                         ResType;
  UINT8                         GenFlag;
  UINT8                         SpecificFlag;
  UINT64                        AddrSpaceGranularity;
  UINT64                        AddrRangeMin;
  UINT64                        AddrRangeMax;
  UINT64                        AddrTranslationOffset;
  UINT64                        AddrLen;
} EFI_ACPI_QWORD_ADDRESS_SPACE_DESCRIPTOR;

///
/// DWORD Address Space Descriptor
///
typedef PACKED struct {
  ACPI_LARGE_RESOURCE_HEADER    Header;
  UINT8                         ResType;
  UINT8                         GenFlag;
  UINT8                         SpecificFlag;
  UINT32                        AddrSpaceGranularity;
  UINT32                        AddrRangeMin;
  UINT32                        AddrRangeMax;
  UINT32                        AddrTranslationOffset;
  UINT32                        AddrLen;
} EFI_ACPI_DWORD_ADDRESS_SPACE_DESCRIPTOR;

///
/// WORD Address Space Descriptor
///
typedef PACKED struct {
  ACPI_LARGE_RESOURCE_HEADER    Header;
  UINT8                         ResType;
  UINT8                         GenFlag;
  UINT8                         SpecificFlag;
  UINT16                        AddrSpaceGranularity;
  UINT16                        AddrRangeMin;
  UINT16                        AddrRangeMax;
  UINT16                        AddrTranslationOffset;
  UINT16                        AddrLen;
} EFI_ACPI_WORD_ADDRESS_SPACE_DESCRIPTOR;

///
/// Extended Interrupt Descriptor
///
typedef PACKED struct {
  ACPI_LARGE_RESOURCE_HEADER    Header;
  UINT8                         InterruptVectorFlags;
  UINT8                         InterruptTableLength;
  UINT32                        InterruptNumber[1];
} EFI_ACPI_EXTENDED_INTERRUPT_DESCRIPTOR;

#pragma pack()

///
/// The End tag identifies an end of resource data.
///
typedef struct {
  UINT8 Desc;
  UINT8 Checksum;
} EFI_ACPI_END_TAG_DESCRIPTOR;

//
// General use definitions
//
#define EFI_ACPI_RESERVED_BYTE  0x00
#define EFI_ACPI_RESERVED_WORD  0x0000
#define EFI_ACPI_RESERVED_DWORD 0x00000000
#define EFI_ACPI_RESERVED_QWORD 0x0000000000000000

//
// Resource Type Specific Flags
// Ref ACPI specification 6.4.3.5.5
//
// Bit [0]    : Write Status, _RW
//
#define EFI_ACPI_MEMORY_RESOURCE_SPECIFIC_FLAG_READ_WRITE                (1 << 0)
#define EFI_ACPI_MEMORY_RESOURCE_SPECIFIC_FLAG_READ_ONLY                 (0 << 0)
//
// Bit [2:1]  : Memory Attributes, _MEM
//
#define EFI_ACPI_MEMORY_RESOURCE_SPECIFIC_FLAG_NON_CACHEABLE             (0 << 1)
#define EFI_ACPI_MEMORY_RESOURCE_SPECIFIC_FLAG_CACHEABLE                 (1 << 1)
#define EFI_ACPI_MEMORY_RESOURCE_SPECIFIC_FLAG_CACHEABLE_WRITE_COMBINING (2 << 1)
#define EFI_ACPI_MEMORY_RESOURCE_SPECIFIC_FLAG_CACHEABLE_PREFETCHABLE    (3 << 1)
//
// Bit [4:3]  : Memory Attributes, _MTP
//
#define EFI_ACPI_MEMORY_RESOURCE_SPECIFIC_FLAG_ADDRESS_RANGE_MEMORY      (0 << 3)
#define EFI_ACPI_MEMORY_RESOURCE_SPECIFIC_FLAG_ADDRESS_RANGE_RESERVED    (1 << 3)
#define EFI_ACPI_MEMORY_RESOURCE_SPECIFIC_FLAG_ADDRESS_RANGE_ACPI        (2 << 3)
#define EFI_APCI_MEMORY_RESOURCE_SPECIFIC_FLAG_ADDRESS_RANGE_NVS         (3 << 3)
//
// Bit [5]    : Memory to I/O Translation, _TTP
//
#define EFI_ACPI_MEMORY_RESOURCE_SPECIFIC_FLAG_TYPE_TRANSLATION          (1 << 5)
#define EFI_ACPI_MEMORY_RESOURCE_SPECIFIC_FLAG_TYPE_STATIC               (0 << 5)

//
// IRQ Information
// Ref ACPI specification 6.4.2.1
//
#define EFI_ACPI_IRQ_SHARABLE_MASK                      0x10
#define   EFI_ACPI_IRQ_SHARABLE                         0x10

#define EFI_ACPI_IRQ_POLARITY_MASK                      0x08
#define   EFI_ACPI_IRQ_HIGH_TRUE                        0x00
#define   EFI_ACPI_IRQ_LOW_FALSE                        0x08

#define EFI_ACPI_IRQ_MODE                               0x01
#define   EFI_ACPI_IRQ_LEVEL_TRIGGERED                  0x00
#define   EFI_ACPI_IRQ_EDGE_TRIGGERED                   0x01

//
// DMA Information
// Ref ACPI specification 6.4.2.2
//
#define EFI_ACPI_DMA_SPEED_TYPE_MASK                    0x60
#define   EFI_ACPI_DMA_SPEED_TYPE_COMPATIBILITY         0x00
#define   EFI_ACPI_DMA_SPEED_TYPE_A                     0x20
#define   EFI_ACPI_DMA_SPEED_TYPE_B                     0x40
#define   EFI_ACPI_DMA_SPEED_TYPE_F                     0x60

#define EFI_ACPI_DMA_BUS_MASTER_MASK                    0x04
#define   EFI_ACPI_DMA_BUS_MASTER                       0x04

#define EFI_ACPI_DMA_TRANSFER_TYPE_MASK                 0x03
#define   EFI_ACPI_DMA_TRANSFER_TYPE_8_BIT              0x00
#define   EFI_ACPI_DMA_TRANSFER_TYPE_8_BIT_AND_16_BIT   0x01
#define   EFI_ACPI_DMA_TRANSFER_TYPE_16_BIT             0x10

//
// IO Information
// Ref ACPI specification 6.4.2.5
//
#define EFI_ACPI_IO_DECODE_MASK                         0x01
#define   EFI_ACPI_IO_DECODE_16_BIT                     0x01
#define   EFI_ACPI_IO_DECODE_10_BIT                     0x00

//
// Memory Information
// Ref ACPI specification 6.4.3.4
//
#define EFI_ACPI_MEMORY_WRITE_STATUS_MASK               0x01
#define   EFI_ACPI_MEMORY_WRITABLE                      0x01
#define   EFI_ACPI_MEMORY_NON_WRITABLE                  0x00

//
// Ensure proper structure formats
//
#pragma pack(1)
//
// ACPI 1.0b table structures
//

///
/// Root System Description Pointer Structure.
///
typedef struct {
  UINT64  Signature;
  UINT8   Checksum;
  UINT8   OemId[6];
  UINT8   Reserved;
  UINT32  RsdtAddress;
} EFI_ACPI_1_0_ROOT_SYSTEM_DESCRIPTION_POINTER;

//
// Root System Description Table
// No definition needed as it is a common description table header, the same with
// EFI_ACPI_DESCRIPTION_HEADER, followed by a variable number of UINT32 table pointers.
//

///
/// RSDT Revision (as defined in ACPI 1.0b specification).
///
#define EFI_ACPI_1_0_ROOT_SYSTEM_DESCRIPTION_TABLE_REVISION 0x01

///
/// Fixed ACPI Description Table Structure (FADT).
///
typedef struct {
  EFI_ACPI_DESCRIPTION_HEADER Header;
  UINT32                      FirmwareCtrl;
  UINT32                      Dsdt;
  UINT8                       IntModel;
  UINT8                       Reserved1;
  UINT16                      SciInt;
  UINT32                      SmiCmd;
  UINT8                       AcpiEnable;
  UINT8                       AcpiDisable;
  UINT8                       S4BiosReq;
  UINT8                       Reserved2;
  UINT32                      Pm1aEvtBlk;
  UINT32                      Pm1bEvtBlk;
  UINT32                      Pm1aCntBlk;
  UINT32                      Pm1bCntBlk;
  UINT32                      Pm2CntBlk;
  UINT32                      PmTmrBlk;
  UINT32                      Gpe0Blk;
  UINT32                      Gpe1Blk;
  UINT8                       Pm1EvtLen;
  UINT8                       Pm1CntLen;
  UINT8                       Pm2CntLen;
  UINT8                       PmTmLen;
  UINT8                       Gpe0BlkLen;
  UINT8                       Gpe1BlkLen;
  UINT8                       Gpe1Base;
  UINT8                       Reserved3;
  UINT16                      PLvl2Lat;
  UINT16                      PLvl3Lat;
  UINT16                      FlushSize;
  UINT16                      FlushStride;
  UINT8                       DutyOffset;
  UINT8                       DutyWidth;
  UINT8                       DayAlrm;
  UINT8                       MonAlrm;
  UINT8                       Century;
  UINT8                       Reserved4;
  UINT8                       Reserved5;
  UINT8                       Reserved6;
  UINT32                      Flags;
} EFI_ACPI_1_0_FIXED_ACPI_DESCRIPTION_TABLE;

///
/// FADT Version (as defined in ACPI 1.0b specification).
///
#define EFI_ACPI_1_0_FIXED_ACPI_DESCRIPTION_TABLE_REVISION  0x01

#define EFI_ACPI_1_0_INT_MODE_DUAL_PIC         0
#define EFI_ACPI_1_0_INT_MODE_MULTIPLE_APIC    1

//
// Fixed ACPI Description Table Fixed Feature Flags
// All other bits are reserved and must be set to 0.
//
#define EFI_ACPI_1_0_WBINVD               BIT0
#define EFI_ACPI_1_0_WBINVD_FLUSH         BIT1
#define EFI_ACPI_1_0_PROC_C1              BIT2
#define EFI_ACPI_1_0_P_LVL2_UP            BIT3
#define EFI_ACPI_1_0_PWR_BUTTON           BIT4
#define EFI_ACPI_1_0_SLP_BUTTON           BIT5
#define EFI_ACPI_1_0_FIX_RTC              BIT6
#define EFI_ACPI_1_0_RTC_S4               BIT7
#define EFI_ACPI_1_0_TMR_VAL_EXT          BIT8
#define EFI_ACPI_1_0_DCK_CAP              BIT9

///
/// Firmware ACPI Control Structure.
///
typedef struct {
  UINT32  Signature;
  UINT32  Length;
  UINT32  HardwareSignature;
  UINT32  FirmwareWakingVector;
  UINT32  GlobalLock;
  UINT32  Flags;
  UINT8   Reserved[40];
} EFI_ACPI_1_0_FIRMWARE_ACPI_CONTROL_STRUCTURE;

///
/// Firmware Control Structure Feature Flags.
/// All other bits are reserved and must be set to 0.
///
#define EFI_ACPI_1_0_S4BIOS_F             BIT0

///
/// Multiple APIC Description Table header definition.  The rest of the table
/// must be defined in a platform-specific manner.
///
typedef struct {
  EFI_ACPI_DESCRIPTION_HEADER Header;
  UINT32                      LocalApicAddress;
  UINT32                      Flags;
} EFI_ACPI_1_0_MULTIPLE_APIC_DESCRIPTION_TABLE_HEADER;

///
/// MADT Revision (as defined in ACPI 1.0b specification).
///
#define EFI_ACPI_1_0_MULTIPLE_APIC_DESCRIPTION_TABLE_REVISION 0x01

///
/// Multiple APIC Flags
/// All other bits are reserved and must be set to 0.
///
#define EFI_ACPI_1_0_PCAT_COMPAT           BIT0

//
// Multiple APIC Description Table APIC structure types
// All other values between 0x05 an 0xFF are reserved and
// will be ignored by OSPM.
//
#define EFI_ACPI_1_0_PROCESSOR_LOCAL_APIC           0x00
#define EFI_ACPI_1_0_IO_APIC                        0x01
#define EFI_ACPI_1_0_INTERRUPT_SOURCE_OVERRIDE      0x02
#define EFI_ACPI_1_0_NON_MASKABLE_INTERRUPT_SOURCE  0x03
#define EFI_ACPI_1_0_LOCAL_APIC_NMI                 0x04

//
// APIC Structure Definitions
//

///
/// Processor Local APIC Structure Definition.
///
typedef struct {
  UINT8   Type;
  UINT8   Length;
  UINT8   AcpiProcessorId;
  UINT8   ApicId;
  UINT32  Flags;
} EFI_ACPI_1_0_PROCESSOR_LOCAL_APIC_STRUCTURE;

///
/// Local APIC Flags.  All other bits are reserved and must be 0.
///
#define EFI_ACPI_1_0_LOCAL_APIC_ENABLED      BIT0

///
/// IO APIC Structure.
///
typedef struct {
  UINT8   Type;
  UINT8   Length;
  UINT8   IoApicId;
  UINT8   Reserved;
  UINT32  IoApicAddress;
  UINT32  SystemVectorBase;
} EFI_ACPI_1_0_IO_APIC_STRUCTURE;

///
/// Interrupt Source Override Structure.
///
typedef struct {
  UINT8   Type;
  UINT8   Length;
  UINT8   Bus;
  UINT8   Source;
  UINT32  GlobalSystemInterruptVector;
  UINT16  Flags;
} EFI_ACPI_1_0_INTERRUPT_SOURCE_OVERRIDE_STRUCTURE;

///
/// Non-Maskable Interrupt Source Structure.
///
typedef struct {
  UINT8   Type;
  UINT8   Length;
  UINT16  Flags;
  UINT32  GlobalSystemInterruptVector;
} EFI_ACPI_1_0_NON_MASKABLE_INTERRUPT_SOURCE_STRUCTURE;

///
/// Local APIC NMI Structure.
///
typedef struct {
  UINT8   Type;
  UINT8   Length;
  UINT8   AcpiProcessorId;
  UINT16  Flags;
  UINT8   LocalApicInti;
} EFI_ACPI_1_0_LOCAL_APIC_NMI_STRUCTURE;

///
/// Smart Battery Description Table (SBST)
///
typedef struct {
  EFI_ACPI_DESCRIPTION_HEADER Header;
  UINT32                      WarningEnergyLevel;
  UINT32                      LowEnergyLevel;
  UINT32                      CriticalEnergyLevel;
} EFI_ACPI_1_0_SMART_BATTERY_DESCRIPTION_TABLE;

//
// Known table signatures
//

///
/// "RSD PTR " Root System Description Pointer.
///
#define EFI_ACPI_1_0_ROOT_SYSTEM_DESCRIPTION_POINTER_SIGNATURE  SIGNATURE_64('R', 'S', 'D', ' ', 'P', 'T', 'R', ' ')

///
/// "APIC" Multiple APIC Description Table.
///
#define EFI_ACPI_1_0_APIC_SIGNATURE  SIGNATURE_32('A', 'P', 'I', 'C')

///
/// "DSDT" Differentiated System Description Table.
///
#define EFI_ACPI_1_0_DIFFERENTIATED_SYSTEM_DESCRIPTION_TABLE_SIGNATURE  SIGNATURE_32('D', 'S', 'D', 'T')

///
/// "FACS" Firmware ACPI Control Structure.
///
#define EFI_ACPI_1_0_FIRMWARE_ACPI_CONTROL_STRUCTURE_SIGNATURE  SIGNATURE_32('F', 'A', 'C', 'S')

///
/// "FACP" Fixed ACPI Description Table.
///
#define EFI_ACPI_1_0_FIXED_ACPI_DESCRIPTION_TABLE_SIGNATURE  SIGNATURE_32('F', 'A', 'C', 'P')

///
/// "PSDT" Persistent System Description Table.
///
#define EFI_ACPI_1_0_PERSISTENT_SYSTEM_DESCRIPTION_TABLE_SIGNATURE  SIGNATURE_32('P', 'S', 'D', 'T')

///
/// "RSDT" Root System Description Table.
///
#define EFI_ACPI_1_0_ROOT_SYSTEM_DESCRIPTION_TABLE_SIGNATURE  SIGNATURE_32('R', 'S', 'D', 'T')

///
/// "SBST" Smart Battery Specification Table.
///
#define EFI_ACPI_1_0_SMART_BATTERY_SPECIFICATION_TABLE_SIGNATURE  SIGNATURE_32('S', 'B', 'S', 'T')

///
/// "SSDT" Secondary System Description Table.
///
#define EFI_ACPI_1_0_SECONDARY_SYSTEM_DESCRIPTION_TABLE_SIGNATURE  SIGNATURE_32('S', 'S', 'D', 'T')

#pragma pack()

#endif