MdePkg/Include/IndustryStandard/Acpi20.h

   1 /** @file
   2   ACPI 2.0 definitions from the ACPI Specification, revision 2.0
   3
   4   Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
   5   This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12 **/
  13
  14 #ifndef _ACPI_2_0_H_
  15 #define _ACPI_2_0_H_
  16
  17 #include <IndustryStandard/Acpi10.h>
  18
  19 //
  20 // Define for Desriptor
  21 //
  22 #define ACPI_LARGE_GENERIC_REGISTER_DESCRIPTOR_NAME          0x02
  23
  24 #define ACPI_GENERIC_REGISTER_DESCRIPTOR          0x82
  25
  26 //
  27 // Ensure proper structure formats
  28 //
  29 #pragma pack(1)
  30
  31 ///
  32 /// Generic Register Descriptor
  33 ///
  34 typedef PACKED struct {
  35   ACPI_LARGE_RESOURCE_HEADER    Header;
  36   UINT8                         AddressSpaceId;
  37   UINT8                         RegisterBitWidth;
  38   UINT8                         RegisterBitOffset;
  39   UINT8                         AddressSize;
  40   UINT64                        RegisterAddress;
  41 } EFI_ACPI_GENERIC_REGISTER_DESCRIPTOR;
  42
  43 #pragma pack()
  44
  45 //
  46 // Ensure proper structure formats
  47 //
  48 #pragma pack(1)
  49
  50 ///
  51 /// ACPI 2.0 Generic Address Space definition
  52 ///
  53 typedef struct {
  54   UINT8   AddressSpaceId;
  55   UINT8   RegisterBitWidth;
  56   UINT8   RegisterBitOffset;
  57   UINT8   Reserved;
  58   UINT64  Address;
  59 } EFI_ACPI_2_0_GENERIC_ADDRESS_STRUCTURE;
  60
  61 //
  62 // Generic Address Space Address IDs
  63 //
  64 #define EFI_ACPI_2_0_SYSTEM_MEMORY              0
  65 #define EFI_ACPI_2_0_SYSTEM_IO                  1
  66 #define EFI_ACPI_2_0_PCI_CONFIGURATION_SPACE    2
  67 #define EFI_ACPI_2_0_EMBEDDED_CONTROLLER        3
  68 #define EFI_ACPI_2_0_SMBUS                      4
  69 #define EFI_ACPI_2_0_FUNCTIONAL_FIXED_HARDWARE  0x7F
  70
  71 //
  72 // ACPI 2.0 table structures
  73 //
  74
  75 ///
  76 /// Root System Description Pointer Structure
  77 ///
  78 typedef struct {
  79   UINT64  Signature;
  80   UINT8   Checksum;
  81   UINT8   OemId[6];
  82   UINT8   Revision;
  83   UINT32  RsdtAddress;
  84   UINT32  Length;
  85   UINT64  XsdtAddress;
  86   UINT8   ExtendedChecksum;
  87   UINT8   Reserved[3];
  88 } EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER;
  89
  90 ///
  91 /// RSD_PTR Revision (as defined in ACPI 2.0 spec.)
  92 ///
  93 #define EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER_REVISION 0x02
  94
  95 ///
  96 /// Common table header, this prefaces all ACPI tables, including FACS, but
  97 /// excluding the RSD PTR structure
  98 ///
  99 typedef struct {
 100   UINT32  Signature;
 101   UINT32  Length;
 102 } EFI_ACPI_2_0_COMMON_HEADER;
 103
 104 //
 105 // Root System Description Table
 106 // No definition needed as it is a common description table header, the same with
 107 // EFI_ACPI_DESCRIPTION_HEADER, followed by a variable number of UINT32 table pointers.
 108 //
 109
 110 ///
 111 /// RSDT Revision (as defined in ACPI 2.0 spec.)
 112 ///
 113 #define EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_TABLE_REVISION 0x01
 114
 115 //
 116 // Extended System Description Table
 117 // No definition needed as it is a common description table header, the same with
 118 // EFI_ACPI_DESCRIPTION_HEADER, followed by a variable number of UINT64 table pointers.
 119 //
 120
 121 ///
 122 /// XSDT Revision (as defined in ACPI 2.0 spec.)
 123 ///
 124 #define EFI_ACPI_2_0_EXTENDED_SYSTEM_DESCRIPTION_TABLE_REVISION 0x01
 125
 126 ///
 127 /// Fixed ACPI Description Table Structure (FADT)
 128 ///
 129 typedef struct {
 130   EFI_ACPI_DESCRIPTION_HEADER             Header;
 131   UINT32                                  FirmwareCtrl;
 132   UINT32                                  Dsdt;
 133   UINT8                                   Reserved0;
 134   UINT8                                   PreferredPmProfile;
 135   UINT16                                  SciInt;
 136   UINT32                                  SmiCmd;
 137   UINT8                                   AcpiEnable;
 138   UINT8                                   AcpiDisable;
 139   UINT8                                   S4BiosReq;
 140   UINT8                                   PstateCnt;
 141   UINT32                                  Pm1aEvtBlk;
 142   UINT32                                  Pm1bEvtBlk;
 143   UINT32                                  Pm1aCntBlk;
 144   UINT32                                  Pm1bCntBlk;
 145   UINT32                                  Pm2CntBlk;
 146   UINT32                                  PmTmrBlk;
 147   UINT32                                  Gpe0Blk;
 148   UINT32                                  Gpe1Blk;
 149   UINT8                                   Pm1EvtLen;
 150   UINT8                                   Pm1CntLen;
 151   UINT8                                   Pm2CntLen;
 152   UINT8                                   PmTmrLen;
 153   UINT8                                   Gpe0BlkLen;
 154   UINT8                                   Gpe1BlkLen;
 155   UINT8                                   Gpe1Base;
 156   UINT8                                   CstCnt;
 157   UINT16                                  PLvl2Lat;
 158   UINT16                                  PLvl3Lat;
 159   UINT16                                  FlushSize;
 160   UINT16                                  FlushStride;
 161   UINT8                                   DutyOffset;
 162   UINT8                                   DutyWidth;
 163   UINT8                                   DayAlrm;
 164   UINT8                                   MonAlrm;
 165   UINT8                                   Century;
 166   UINT16                                  IaPcBootArch;
 167   UINT8                                   Reserved1;
 168   UINT32                                  Flags;
 169   EFI_ACPI_2_0_GENERIC_ADDRESS_STRUCTURE  ResetReg;
 170   UINT8                                   ResetValue;
 171   UINT8                                   Reserved2[3];
 172   UINT64                                  XFirmwareCtrl;
 173   UINT64                                  XDsdt;
 174   EFI_ACPI_2_0_GENERIC_ADDRESS_STRUCTURE  XPm1aEvtBlk;
 175   EFI_ACPI_2_0_GENERIC_ADDRESS_STRUCTURE  XPm1bEvtBlk;
 176   EFI_ACPI_2_0_GENERIC_ADDRESS_STRUCTURE  XPm1aCntBlk;
 177   EFI_ACPI_2_0_GENERIC_ADDRESS_STRUCTURE  XPm1bCntBlk;
 178   EFI_ACPI_2_0_GENERIC_ADDRESS_STRUCTURE  XPm2CntBlk;
 179   EFI_ACPI_2_0_GENERIC_ADDRESS_STRUCTURE  XPmTmrBlk;
 180   EFI_ACPI_2_0_GENERIC_ADDRESS_STRUCTURE  XGpe0Blk;
 181   EFI_ACPI_2_0_GENERIC_ADDRESS_STRUCTURE  XGpe1Blk;
 182 } EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE;
 183
 184 ///
 185 /// FADT Version (as defined in ACPI 2.0 spec.)
 186 ///
 187 #define EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE_REVISION  0x03
 188
 189 //
 190 // Fixed ACPI Description Table Preferred Power Management Profile
 191 //
 192 #define EFI_ACPI_2_0_PM_PROFILE_UNSPECIFIED         0
 193 #define EFI_ACPI_2_0_PM_PROFILE_DESKTOP             1
 194 #define EFI_ACPI_2_0_PM_PROFILE_MOBILE              2
 195 #define EFI_ACPI_2_0_PM_PROFILE_WORKSTATION         3
 196 #define EFI_ACPI_2_0_PM_PROFILE_ENTERPRISE_SERVER   4
 197 #define EFI_ACPI_2_0_PM_PROFILE_SOHO_SERVER         5
 198 #define EFI_ACPI_2_0_PM_PROFILE_APPLIANCE_PC        6
 199
 200 //
 201 // Fixed ACPI Description Table Boot Architecture Flags
 202 // All other bits are reserved and must be set to 0.
 203 //
 204 #define EFI_ACPI_2_0_LEGACY_DEVICES          BIT0
 205 #define EFI_ACPI_2_0_8042                    BIT1
 206
 207 //
 208 // Fixed ACPI Description Table Fixed Feature Flags
 209 // All other bits are reserved and must be set to 0.
 210 //
 211 #define EFI_ACPI_2_0_WBINVD                  BIT0
 212 #define EFI_ACPI_2_0_WBINVD_FLUSH            BIT1
 213 #define EFI_ACPI_2_0_PROC_C1                 BIT2
 214 #define EFI_ACPI_2_0_P_LVL2_UP               BIT3
 215 #define EFI_ACPI_2_0_PWR_BUTTON              BIT4
 216 #define EFI_ACPI_2_0_SLP_BUTTON              BIT5
 217 #define EFI_ACPI_2_0_FIX_RTC                 BIT6
 218 #define EFI_ACPI_2_0_RTC_S4                  BIT7
 219 #define EFI_ACPI_2_0_TMR_VAL_EXT             BIT8
 220 #define EFI_ACPI_2_0_DCK_CAP                 BIT9
 221 #define EFI_ACPI_2_0_RESET_REG_SUP           BIT10
 222 #define EFI_ACPI_2_0_SEALED_CASE             BIT11
 223 #define EFI_ACPI_2_0_HEADLESS                BIT12
 224 #define EFI_ACPI_2_0_CPU_SW_SLP              BIT13
 225
 226 ///
 227 /// Firmware ACPI Control Structure
 228 ///
 229 typedef struct {
 230   UINT32  Signature;
 231   UINT32  Length;
 232   UINT32  HardwareSignature;
 233   UINT32  FirmwareWakingVector;
 234   UINT32  GlobalLock;
 235   UINT32  Flags;
 236   UINT64  XFirmwareWakingVector;
 237   UINT8   Version;
 238   UINT8   Reserved[31];
 239 } EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE;
 240
 241 ///
 242 /// FACS Version (as defined in ACPI 2.0 spec.)
 243 ///
 244 #define EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE_VERSION  0x01
 245
 246 ///
 247 /// Firmware Control Structure Feature Flags
 248 /// All other bits are reserved and must be set to 0.
 249 ///
 250 #define EFI_ACPI_2_0_S4BIOS_F        BIT0
 251
 252 ///
 253 /// Multiple APIC Description Table header definition.  The rest of the table
 254 /// must be defined in a platform specific manner.
 255 ///
 256 typedef struct {
 257   EFI_ACPI_DESCRIPTION_HEADER Header;
 258   UINT32                      LocalApicAddress;
 259   UINT32                      Flags;
 260 } EFI_ACPI_2_0_MULTIPLE_APIC_DESCRIPTION_TABLE_HEADER;
 261
 262 ///
 263 /// MADT Revision (as defined in ACPI 2.0 spec.)
 264 ///
 265 #define EFI_ACPI_2_0_MULTIPLE_APIC_DESCRIPTION_TABLE_REVISION 0x01
 266
 267 ///
 268 /// Multiple APIC Flags
 269 /// All other bits are reserved and must be set to 0.
 270 ///
 271 #define EFI_ACPI_2_0_PCAT_COMPAT          BIT0
 272
 273 //
 274 // Multiple APIC Description Table APIC structure types
 275 // All other values between 0x09 an 0xFF are reserved and
 276 // will be ignored by OSPM.
 277 //
 278 #define EFI_ACPI_2_0_PROCESSOR_LOCAL_APIC           0x00
 279 #define EFI_ACPI_2_0_IO_APIC                        0x01
 280 #define EFI_ACPI_2_0_INTERRUPT_SOURCE_OVERRIDE      0x02
 281 #define EFI_ACPI_2_0_NON_MASKABLE_INTERRUPT_SOURCE  0x03
 282 #define EFI_ACPI_2_0_LOCAL_APIC_NMI                 0x04
 283 #define EFI_ACPI_2_0_LOCAL_APIC_ADDRESS_OVERRIDE    0x05
 284 #define EFI_ACPI_2_0_IO_SAPIC                       0x06
 285 #define EFI_ACPI_2_0_PROCESSOR_LOCAL_SAPIC          0x07
 286 #define EFI_ACPI_2_0_PLATFORM_INTERRUPT_SOURCES     0x08
 287
 288 //
 289 // APIC Structure Definitions
 290 //
 291
 292 ///
 293 /// Processor Local APIC Structure Definition
 294 ///
 295 typedef struct {
 296   UINT8   Type;
 297   UINT8   Length;
 298   UINT8   AcpiProcessorId;
 299   UINT8   ApicId;
 300   UINT32  Flags;
 301 } EFI_ACPI_2_0_PROCESSOR_LOCAL_APIC_STRUCTURE;
 302
 303 ///
 304 /// Local APIC Flags.  All other bits are reserved and must be 0.
 305 ///
 306 #define EFI_ACPI_2_0_LOCAL_APIC_ENABLED         BIT0
 307
 308 ///
 309 /// IO APIC Structure
 310 ///
 311 typedef struct {
 312   UINT8   Type;
 313   UINT8   Length;
 314   UINT8   IoApicId;
 315   UINT8   Reserved;
 316   UINT32  IoApicAddress;
 317   UINT32  GlobalSystemInterruptBase;
 318 } EFI_ACPI_2_0_IO_APIC_STRUCTURE;
 319
 320 ///
 321 /// Interrupt Source Override Structure
 322 ///
 323 typedef struct {
 324   UINT8   Type;
 325   UINT8   Length;
 326   UINT8   Bus;
 327   UINT8   Source;
 328   UINT32  GlobalSystemInterrupt;
 329   UINT16  Flags;
 330 } EFI_ACPI_2_0_INTERRUPT_SOURCE_OVERRIDE_STRUCTURE;
 331
 332 ///
 333 /// Non-Maskable Interrupt Source Structure
 334 ///
 335 typedef struct {
 336   UINT8   Type;
 337   UINT8   Length;
 338   UINT16  Flags;
 339   UINT32  GlobalSystemInterrupt;
 340 } EFI_ACPI_2_0_NON_MASKABLE_INTERRUPT_SOURCE_STRUCTURE;
 341
 342 ///
 343 /// Local APIC NMI Structure
 344 ///
 345 typedef struct {
 346   UINT8   Type;
 347   UINT8   Length;
 348   UINT8   AcpiProcessorId;
 349   UINT16  Flags;
 350   UINT8   LocalApicLint;
 351 } EFI_ACPI_2_0_LOCAL_APIC_NMI_STRUCTURE;
 352
 353 ///
 354 /// Local APIC Address Override Structure
 355 ///
 356 typedef struct {
 357   UINT8   Type;
 358   UINT8   Length;
 359   UINT16  Reserved;
 360   UINT64  LocalApicAddress;
 361 } EFI_ACPI_2_0_LOCAL_APIC_ADDRESS_OVERRIDE_STRUCTURE;
 362
 363 ///
 364 /// IO SAPIC Structure
 365 ///
 366 typedef struct {
 367   UINT8   Type;
 368   UINT8   Length;
 369   UINT8   IoApicId;
 370   UINT8   Reserved;
 371   UINT32  GlobalSystemInterruptBase;
 372   UINT64  IoSapicAddress;
 373 } EFI_ACPI_2_0_IO_SAPIC_STRUCTURE;
 374
 375 ///
 376 /// Local SAPIC Structure
 377 ///
 378 typedef struct {
 379   UINT8   Type;
 380   UINT8   Length;
 381   UINT8   AcpiProcessorId;
 382   UINT8   LocalSapicId;
 383   UINT8   LocalSapicEid;
 384   UINT8   Reserved[3];
 385   UINT32  Flags;
 386 } EFI_ACPI_2_0_PROCESSOR_LOCAL_SAPIC_STRUCTURE;
 387
 388 ///
 389 /// Platform Interrupt Sources Structure
 390 ///
 391 typedef struct {
 392   UINT8   Type;
 393   UINT8   Length;
 394   UINT16  Flags;
 395   UINT8   InterruptType;
 396   UINT8   ProcessorId;
 397   UINT8   ProcessorEid;
 398   UINT8   IoSapicVector;
 399   UINT32  GlobalSystemInterrupt;
 400   UINT32  Reserved;
 401 } EFI_ACPI_2_0_PLATFORM_INTERRUPT_SOURCES_STRUCTURE;
 402
 403 ///
 404 /// Smart Battery Description Table (SBST)
 405 ///
 406 typedef struct {
 407   EFI_ACPI_DESCRIPTION_HEADER Header;
 408   UINT32                      WarningEnergyLevel;
 409   UINT32                      LowEnergyLevel;
 410   UINT32                      CriticalEnergyLevel;
 411 } EFI_ACPI_2_0_SMART_BATTERY_DESCRIPTION_TABLE;
 412
 413 ///
 414 /// SBST Version (as defined in ACPI 2.0 spec.)
 415 ///
 416 #define EFI_ACPI_2_0_SMART_BATTERY_DESCRIPTION_TABLE_REVISION 0x01
 417
 418 ///
 419 /// Embedded Controller Boot Resources Table (ECDT)
 420 /// The table is followed by a null terminated ASCII string that contains
 421 /// a fully qualified reference to the name space object.
 422 ///
 423 typedef struct {
 424   EFI_ACPI_DESCRIPTION_HEADER             Header;
 425   EFI_ACPI_2_0_GENERIC_ADDRESS_STRUCTURE  EcControl;
 426   EFI_ACPI_2_0_GENERIC_ADDRESS_STRUCTURE  EcData;
 427   UINT32                                  Uid;
 428   UINT8                                   GpeBit;
 429 } EFI_ACPI_2_0_EMBEDDED_CONTROLLER_BOOT_RESOURCES_TABLE;
 430
 431 ///
 432 /// ECDT Version (as defined in ACPI 2.0 spec.)
 433 ///
 434 #define EFI_ACPI_2_0_EMBEDDED_CONTROLLER_BOOT_RESOURCES_TABLE_REVISION  0x01
 435
 436 //
 437 // Known table signatures
 438 //
 439
 440 ///
 441 /// "RSD PTR " Root System Description Pointer
 442 ///
 443 #define EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER_SIGNATURE  SIGNATURE_64('R', 'S', 'D', ' ', 'P', 'T', 'R', ' ')
 444
 445 ///
 446 /// "SPIC" Multiple SAPIC Description Table
 447 ///
 448 /// BUGBUG: Don't know where this came from except SR870BN4 uses it.
 449 /// #define EFI_ACPI_2_0_MULTIPLE_SAPIC_DESCRIPTION_TABLE_SIGNATURE 0x43495053
 450 ///
 451 #define EFI_ACPI_2_0_MULTIPLE_SAPIC_DESCRIPTION_TABLE_SIGNATURE  SIGNATURE_32('A', 'P', 'I', 'C')
 452
 453 ///
 454 /// "BOOT" MS Simple Boot Spec
 455 ///
 456 #define EFI_ACPI_2_0_SIMPLE_BOOT_FLAG_TABLE_SIGNATURE  SIGNATURE_32('B', 'O', 'O', 'T')
 457
 458 ///
 459 /// "DBGP" MS Bebug Port Spec
 460 ///
 461 #define EFI_ACPI_2_0_DEBUG_PORT_TABLE_SIGNATURE  SIGNATURE_32('D', 'B', 'G', 'P')
 462
 463 ///
 464 /// "DSDT" Differentiated System Description Table
 465 ///
 466 #define EFI_ACPI_2_0_DIFFERENTIATED_SYSTEM_DESCRIPTION_TABLE_SIGNATURE  SIGNATURE_32('D', 'S', 'D', 'T')
 467
 468 ///
 469 /// "ECDT" Embedded Controller Boot Resources Table
 470 ///
 471 #define EFI_ACPI_2_0_EMBEDDED_CONTROLLER_BOOT_RESOURCES_TABLE_SIGNATURE  SIGNATURE_32('E', 'C', 'D', 'T')
 472
 473 ///
 474 /// "ETDT" Event Timer Description Table
 475 ///
 476 #define EFI_ACPI_2_0_EVENT_TIMER_DESCRIPTION_TABLE_SIGNATURE  SIGNATURE_32('E', 'T', 'D', 'T')
 477
 478 ///
 479 /// "FACS" Firmware ACPI Control Structure
 480 ///
 481 #define EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE_SIGNATURE  SIGNATURE_32('F', 'A', 'C', 'S')
 482
 483 ///
 484 /// "FACP" Fixed ACPI Description Table
 485 ///
 486 #define EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE_SIGNATURE  SIGNATURE_32('F', 'A', 'C', 'P')
 487
 488 ///
 489 /// "APIC" Multiple APIC Description Table
 490 ///
 491 #define EFI_ACPI_2_0_MULTIPLE_APIC_DESCRIPTION_TABLE_SIGNATURE  SIGNATURE_32('A', 'P', 'I', 'C')
 492
 493 ///
 494 /// "PSDT" Persistent System Description Table
 495 ///
 496 #define EFI_ACPI_2_0_PERSISTENT_SYSTEM_DESCRIPTION_TABLE_SIGNATURE  SIGNATURE_32('P', 'S', 'D', 'T')
 497
 498 ///
 499 /// "RSDT" Root System Description Table
 500 ///
 501 #define EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_TABLE_SIGNATURE  SIGNATURE_32('R', 'S', 'D', 'T')
 502
 503 ///
 504 /// "SBST" Smart Battery Specification Table
 505 ///
 506 #define EFI_ACPI_2_0_SMART_BATTERY_SPECIFICATION_TABLE_SIGNATURE  SIGNATURE_32('S', 'B', 'S', 'T')
 507
 508 ///
 509 /// "SLIT" System Locality Information Table
 510 ///
 511 #define EFI_ACPI_2_0_SYSTEM_LOCALITY_INFORMATION_TABLE_SIGNATURE  SIGNATURE_32('S', 'L', 'I', 'T')
 512
 513 ///
 514 /// "SPCR" Serial Port Concole Redirection Table
 515 ///
 516 #define EFI_ACPI_2_0_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_SIGNATURE  SIGNATURE_32('S', 'P', 'C', 'R')
 517
 518 ///
 519 /// "SRAT" Static Resource Affinity Table
 520 ///
 521 #define EFI_ACPI_2_0_STATIC_RESOURCE_AFFINITY_TABLE_SIGNATURE  SIGNATURE_32('S', 'R', 'A', 'T')
 522
 523 ///
 524 /// "SSDT" Secondary System Description Table
 525 ///
 526 #define EFI_ACPI_2_0_SECONDARY_SYSTEM_DESCRIPTION_TABLE_SIGNATURE  SIGNATURE_32('S', 'S', 'D', 'T')
 527
 528 ///
 529 /// "SPMI" Server Platform Management Interface Table
 530 ///
 531 #define EFI_ACPI_2_0_SERVER_PLATFORM_MANAGEMENT_INTERFACE_SIGNATURE  SIGNATURE_32('S', 'P', 'M', 'I')
 532
 533 ///
 534 /// "XSDT" Extended System Description Table
 535 ///
 536 #define EFI_ACPI_2_0_EXTENDED_SYSTEM_DESCRIPTION_TABLE_SIGNATURE  SIGNATURE_32('X', 'S', 'D', 'T')
 537
 538 ///
 539 /// "MCFG" PCI Express Memory Mapped Configuration Space Base Address Description Table
 540 ///
 541 #define EFI_ACPI_2_0_MEMORY_MAPPED_CONFIGURATION_BASE_ADDRESS_TABLE_SIGNATURE  SIGNATURE_32('M', 'C', 'F', 'G')
 542
 543 #pragma pack()
 544
 545 #endif