2 ACPI 4.0 definitions from the ACPI Specification Revision 4.0a April 5, 2010
4 Copyright (c) 2010 - 2011, 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
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.
17 #include <IndustryStandard/Acpi30.h>
20 // Ensure proper structure formats
25 /// ACPI 4.0 Generic Address Space definition
29 UINT8 RegisterBitWidth
;
30 UINT8 RegisterBitOffset
;
33 } EFI_ACPI_4_0_GENERIC_ADDRESS_STRUCTURE
;
36 // Generic Address Space Address IDs
38 #define EFI_ACPI_4_0_SYSTEM_MEMORY 0
39 #define EFI_ACPI_4_0_SYSTEM_IO 1
40 #define EFI_ACPI_4_0_PCI_CONFIGURATION_SPACE 2
41 #define EFI_ACPI_4_0_EMBEDDED_CONTROLLER 3
42 #define EFI_ACPI_4_0_SMBUS 4
43 #define EFI_ACPI_4_0_FUNCTIONAL_FIXED_HARDWARE 0x7F
46 // Generic Address Space Access Sizes
48 #define EFI_ACPI_4_0_UNDEFINED 0
49 #define EFI_ACPI_4_0_BYTE 1
50 #define EFI_ACPI_4_0_WORD 2
51 #define EFI_ACPI_4_0_DWORD 3
52 #define EFI_ACPI_4_0_QWORD 4
55 // ACPI 4.0 table structures
59 /// Root System Description Pointer Structure
69 UINT8 ExtendedChecksum
;
71 } EFI_ACPI_4_0_ROOT_SYSTEM_DESCRIPTION_POINTER
;
74 /// RSD_PTR Revision (as defined in ACPI 4.0b spec.)
76 #define EFI_ACPI_4_0_ROOT_SYSTEM_DESCRIPTION_POINTER_REVISION 0x02 ///< ACPISpec (Revision 4.0a) says current value is 2
79 /// Common table header, this prefaces all ACPI tables, including FACS, but
80 /// excluding the RSD PTR structure
85 } EFI_ACPI_4_0_COMMON_HEADER
;
88 // Root System Description Table
89 // No definition needed as it is a common description table header, the same with
90 // EFI_ACPI_DESCRIPTION_HEADER, followed by a variable number of UINT32 table pointers.
94 /// RSDT Revision (as defined in ACPI 4.0 spec.)
96 #define EFI_ACPI_4_0_ROOT_SYSTEM_DESCRIPTION_TABLE_REVISION 0x01
99 // Extended System Description Table
100 // No definition needed as it is a common description table header, the same with
101 // EFI_ACPI_DESCRIPTION_HEADER, followed by a variable number of UINT64 table pointers.
105 /// XSDT Revision (as defined in ACPI 4.0 spec.)
107 #define EFI_ACPI_4_0_EXTENDED_SYSTEM_DESCRIPTION_TABLE_REVISION 0x01
110 /// Fixed ACPI Description Table Structure (FADT)
113 EFI_ACPI_DESCRIPTION_HEADER Header
;
117 UINT8 PreferredPmProfile
;
152 EFI_ACPI_4_0_GENERIC_ADDRESS_STRUCTURE ResetReg
;
155 UINT64 XFirmwareCtrl
;
157 EFI_ACPI_4_0_GENERIC_ADDRESS_STRUCTURE XPm1aEvtBlk
;
158 EFI_ACPI_4_0_GENERIC_ADDRESS_STRUCTURE XPm1bEvtBlk
;
159 EFI_ACPI_4_0_GENERIC_ADDRESS_STRUCTURE XPm1aCntBlk
;
160 EFI_ACPI_4_0_GENERIC_ADDRESS_STRUCTURE XPm1bCntBlk
;
161 EFI_ACPI_4_0_GENERIC_ADDRESS_STRUCTURE XPm2CntBlk
;
162 EFI_ACPI_4_0_GENERIC_ADDRESS_STRUCTURE XPmTmrBlk
;
163 EFI_ACPI_4_0_GENERIC_ADDRESS_STRUCTURE XGpe0Blk
;
164 EFI_ACPI_4_0_GENERIC_ADDRESS_STRUCTURE XGpe1Blk
;
165 } EFI_ACPI_4_0_FIXED_ACPI_DESCRIPTION_TABLE
;
168 /// FADT Version (as defined in ACPI 4.0 spec.)
170 #define EFI_ACPI_4_0_FIXED_ACPI_DESCRIPTION_TABLE_REVISION 0x04
173 // Fixed ACPI Description Table Preferred Power Management Profile
175 #define EFI_ACPI_4_0_PM_PROFILE_UNSPECIFIED 0
176 #define EFI_ACPI_4_0_PM_PROFILE_DESKTOP 1
177 #define EFI_ACPI_4_0_PM_PROFILE_MOBILE 2
178 #define EFI_ACPI_4_0_PM_PROFILE_WORKSTATION 3
179 #define EFI_ACPI_4_0_PM_PROFILE_ENTERPRISE_SERVER 4
180 #define EFI_ACPI_4_0_PM_PROFILE_SOHO_SERVER 5
181 #define EFI_ACPI_4_0_PM_PROFILE_APPLIANCE_PC 6
182 #define EFI_ACPI_4_0_PM_PROFILE_PERFORMANCE_SERVER 7
185 // Fixed ACPI Description Table Boot Architecture Flags
186 // All other bits are reserved and must be set to 0.
188 #define EFI_ACPI_4_0_LEGACY_DEVICES BIT0
189 #define EFI_ACPI_4_0_8042 BIT1
190 #define EFI_ACPI_4_0_VGA_NOT_PRESENT BIT2
191 #define EFI_ACPI_4_0_MSI_NOT_SUPPORTED BIT3
192 #define EFI_ACPI_4_0_PCIE_ASPM_CONTROLS BIT4
195 // Fixed ACPI Description Table Fixed Feature Flags
196 // All other bits are reserved and must be set to 0.
198 #define EFI_ACPI_4_0_WBINVD BIT0
199 #define EFI_ACPI_4_0_WBINVD_FLUSH BIT1
200 #define EFI_ACPI_4_0_PROC_C1 BIT2
201 #define EFI_ACPI_4_0_P_LVL2_UP BIT3
202 #define EFI_ACPI_4_0_PWR_BUTTON BIT4
203 #define EFI_ACPI_4_0_SLP_BUTTON BIT5
204 #define EFI_ACPI_4_0_FIX_RTC BIT6
205 #define EFI_ACPI_4_0_RTC_S4 BIT7
206 #define EFI_ACPI_4_0_TMR_VAL_EXT BIT8
207 #define EFI_ACPI_4_0_DCK_CAP BIT9
208 #define EFI_ACPI_4_0_RESET_REG_SUP BIT10
209 #define EFI_ACPI_4_0_SEALED_CASE BIT11
210 #define EFI_ACPI_4_0_HEADLESS BIT12
211 #define EFI_ACPI_4_0_CPU_SW_SLP BIT13
212 #define EFI_ACPI_4_0_PCI_EXP_WAK BIT14
213 #define EFI_ACPI_4_0_USE_PLATFORM_CLOCK BIT15
214 #define EFI_ACPI_4_0_S4_RTC_STS_VALID BIT16
215 #define EFI_ACPI_4_0_REMOTE_POWER_ON_CAPABLE BIT17
216 #define EFI_ACPI_4_0_FORCE_APIC_CLUSTER_MODEL BIT18
217 #define EFI_ACPI_4_0_FORCE_APIC_PHYSICAL_DESTINATION_MODE BIT19
220 /// Firmware ACPI Control Structure
225 UINT32 HardwareSignature
;
226 UINT32 FirmwareWakingVector
;
229 UINT64 XFirmwareWakingVector
;
234 } EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE
;
237 /// FACS Version (as defined in ACPI 4.0 spec.)
239 #define EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE_VERSION 0x02
242 /// Firmware Control Structure Feature Flags
243 /// All other bits are reserved and must be set to 0.
245 #define EFI_ACPI_4_0_S4BIOS_F BIT0
246 #define EFI_ACPI_4_0_64BIT_WAKE_SUPPORTED_F BIT1
249 /// OSPM Enabled Firmware Control Structure Flags
250 /// All other bits are reserved and must be set to 0.
252 #define EFI_ACPI_4_0_OSPM_64BIT_WAKE__F BIT0
255 // Differentiated System Description Table,
256 // Secondary System Description Table
257 // and Persistent System Description Table,
258 // no definition needed as they are common description table header, the same with
259 // EFI_ACPI_DESCRIPTION_HEADER, followed by a definition block.
261 #define EFI_ACPI_4_0_DIFFERENTIATED_SYSTEM_DESCRIPTION_TABLE_REVISION 0x02
262 #define EFI_ACPI_4_0_SECONDARY_SYSTEM_DESCRIPTION_TABLE_REVISION 0x02
265 /// Multiple APIC Description Table header definition. The rest of the table
266 /// must be defined in a platform specific manner.
269 EFI_ACPI_DESCRIPTION_HEADER Header
;
270 UINT32 LocalApicAddress
;
272 } EFI_ACPI_4_0_MULTIPLE_APIC_DESCRIPTION_TABLE_HEADER
;
275 /// MADT Revision (as defined in ACPI 4.0 spec.)
277 #define EFI_ACPI_4_0_MULTIPLE_APIC_DESCRIPTION_TABLE_REVISION 0x03
280 /// Multiple APIC Flags
281 /// All other bits are reserved and must be set to 0.
283 #define EFI_ACPI_4_0_PCAT_COMPAT BIT0
286 // Multiple APIC Description Table APIC structure types
287 // All other values between 0x0B an 0xFF are reserved and
288 // will be ignored by OSPM.
290 #define EFI_ACPI_4_0_PROCESSOR_LOCAL_APIC 0x00
291 #define EFI_ACPI_4_0_IO_APIC 0x01
292 #define EFI_ACPI_4_0_INTERRUPT_SOURCE_OVERRIDE 0x02
293 #define EFI_ACPI_4_0_NON_MASKABLE_INTERRUPT_SOURCE 0x03
294 #define EFI_ACPI_4_0_LOCAL_APIC_NMI 0x04
295 #define EFI_ACPI_4_0_LOCAL_APIC_ADDRESS_OVERRIDE 0x05
296 #define EFI_ACPI_4_0_IO_SAPIC 0x06
297 #define EFI_ACPI_4_0_LOCAL_SAPIC 0x07
298 #define EFI_ACPI_4_0_PLATFORM_INTERRUPT_SOURCES 0x08
299 #define EFI_ACPI_4_0_PROCESSOR_LOCAL_X2APIC 0x09
300 #define EFI_ACPI_4_0_LOCAL_X2APIC_NMI 0x0A
303 // APIC Structure Definitions
307 /// Processor Local APIC Structure Definition
312 UINT8 AcpiProcessorId
;
315 } EFI_ACPI_4_0_PROCESSOR_LOCAL_APIC_STRUCTURE
;
318 /// Local APIC Flags. All other bits are reserved and must be 0.
320 #define EFI_ACPI_4_0_LOCAL_APIC_ENABLED BIT0
323 /// IO APIC Structure
330 UINT32 IoApicAddress
;
331 UINT32 GlobalSystemInterruptBase
;
332 } EFI_ACPI_4_0_IO_APIC_STRUCTURE
;
335 /// Interrupt Source Override Structure
342 UINT32 GlobalSystemInterrupt
;
344 } EFI_ACPI_4_0_INTERRUPT_SOURCE_OVERRIDE_STRUCTURE
;
347 /// Platform Interrupt Sources Structure Definition
357 UINT32 GlobalSystemInterrupt
;
358 UINT32 PlatformInterruptSourceFlags
;
359 UINT8 CpeiProcessorOverride
;
361 } EFI_ACPI_4_0_PLATFORM_INTERRUPT_APIC_STRUCTURE
;
365 // All other bits are reserved and must be set to 0.
367 #define EFI_ACPI_4_0_POLARITY (3 << 0)
368 #define EFI_ACPI_4_0_TRIGGER_MODE (3 << 2)
371 /// Non-Maskable Interrupt Source Structure
377 UINT32 GlobalSystemInterrupt
;
378 } EFI_ACPI_4_0_NON_MASKABLE_INTERRUPT_SOURCE_STRUCTURE
;
381 /// Local APIC NMI Structure
386 UINT8 AcpiProcessorId
;
389 } EFI_ACPI_4_0_LOCAL_APIC_NMI_STRUCTURE
;
392 /// Local APIC Address Override Structure
398 UINT64 LocalApicAddress
;
399 } EFI_ACPI_4_0_LOCAL_APIC_ADDRESS_OVERRIDE_STRUCTURE
;
402 /// IO SAPIC Structure
409 UINT32 GlobalSystemInterruptBase
;
410 UINT64 IoSapicAddress
;
411 } EFI_ACPI_4_0_IO_SAPIC_STRUCTURE
;
414 /// Local SAPIC Structure
415 /// This struct followed by a null-terminated ASCII string - ACPI Processor UID String
420 UINT8 AcpiProcessorId
;
425 UINT32 ACPIProcessorUIDValue
;
426 } EFI_ACPI_4_0_PROCESSOR_LOCAL_SAPIC_STRUCTURE
;
429 /// Platform Interrupt Sources Structure
439 UINT32 GlobalSystemInterrupt
;
440 UINT32 PlatformInterruptSourceFlags
;
441 } EFI_ACPI_4_0_PLATFORM_INTERRUPT_SOURCES_STRUCTURE
;
444 /// Platform Interrupt Source Flags.
445 /// All other bits are reserved and must be set to 0.
447 #define EFI_ACPI_4_0_CPEI_PROCESSOR_OVERRIDE BIT0
450 /// Processor Local x2APIC Structure Definition
458 UINT32 AcpiProcessorUid
;
459 } EFI_ACPI_4_0_PROCESSOR_LOCAL_X2APIC_STRUCTURE
;
462 /// Local x2APIC NMI Structure
468 UINT32 AcpiProcessorUid
;
469 UINT8 LocalX2ApicLint
;
471 } EFI_ACPI_4_0_LOCAL_X2APIC_NMI_STRUCTURE
;
474 /// Smart Battery Description Table (SBST)
477 EFI_ACPI_DESCRIPTION_HEADER Header
;
478 UINT32 WarningEnergyLevel
;
479 UINT32 LowEnergyLevel
;
480 UINT32 CriticalEnergyLevel
;
481 } EFI_ACPI_4_0_SMART_BATTERY_DESCRIPTION_TABLE
;
484 /// SBST Version (as defined in ACPI 4.0 spec.)
486 #define EFI_ACPI_4_0_SMART_BATTERY_DESCRIPTION_TABLE_REVISION 0x01
489 /// Embedded Controller Boot Resources Table (ECDT)
490 /// The table is followed by a null terminated ASCII string that contains
491 /// a fully qualified reference to the name space object.
494 EFI_ACPI_DESCRIPTION_HEADER Header
;
495 EFI_ACPI_4_0_GENERIC_ADDRESS_STRUCTURE EcControl
;
496 EFI_ACPI_4_0_GENERIC_ADDRESS_STRUCTURE EcData
;
499 } EFI_ACPI_4_0_EMBEDDED_CONTROLLER_BOOT_RESOURCES_TABLE
;
502 /// ECDT Version (as defined in ACPI 4.0 spec.)
504 #define EFI_ACPI_4_0_EMBEDDED_CONTROLLER_BOOT_RESOURCES_TABLE_REVISION 0x01
507 /// System Resource Affinity Table (SRAT. The rest of the table
508 /// must be defined in a platform specific manner.
511 EFI_ACPI_DESCRIPTION_HEADER Header
;
512 UINT32 Reserved1
; ///< Must be set to 1
514 } EFI_ACPI_4_0_SYSTEM_RESOURCE_AFFINITY_TABLE_HEADER
;
517 /// SRAT Version (as defined in ACPI 4.0 spec.)
519 #define EFI_ACPI_4_0_SYSTEM_RESOURCE_AFFINITY_TABLE_REVISION 0x03
522 // SRAT structure types.
523 // All other values between 0x03 an 0xFF are reserved and
524 // will be ignored by OSPM.
526 #define EFI_ACPI_4_0_PROCESSOR_LOCAL_APIC_SAPIC_AFFINITY 0x00
527 #define EFI_ACPI_4_0_MEMORY_AFFINITY 0x01
528 #define EFI_ACPI_4_0_PROCESSOR_LOCAL_X2APIC_AFFINITY 0x02
531 /// Processor Local APIC/SAPIC Affinity Structure Definition
536 UINT8 ProximityDomain7To0
;
540 UINT8 ProximityDomain31To8
[3];
542 } EFI_ACPI_4_0_PROCESSOR_LOCAL_APIC_SAPIC_AFFINITY_STRUCTURE
;
545 /// Local APIC/SAPIC Flags. All other bits are reserved and must be 0.
547 #define EFI_ACPI_4_0_PROCESSOR_LOCAL_APIC_SAPIC_ENABLED (1 << 0)
550 /// Memory Affinity Structure Definition
555 UINT32 ProximityDomain
;
557 UINT32 AddressBaseLow
;
558 UINT32 AddressBaseHigh
;
564 } EFI_ACPI_4_0_MEMORY_AFFINITY_STRUCTURE
;
567 // Memory Flags. All other bits are reserved and must be 0.
569 #define EFI_ACPI_4_0_MEMORY_ENABLED (1 << 0)
570 #define EFI_ACPI_4_0_MEMORY_HOT_PLUGGABLE (1 << 1)
571 #define EFI_ACPI_4_0_MEMORY_NONVOLATILE (1 << 2)
574 /// Processor Local x2APIC Affinity Structure Definition
580 UINT32 ProximityDomain
;
585 } EFI_ACPI_4_0_PROCESSOR_LOCAL_X2APIC_AFFINITY_STRUCTURE
;
588 /// System Locality Distance Information Table (SLIT).
589 /// The rest of the table is a matrix.
592 EFI_ACPI_DESCRIPTION_HEADER Header
;
593 UINT64 NumberOfSystemLocalities
;
594 } EFI_ACPI_4_0_SYSTEM_LOCALITY_DISTANCE_INFORMATION_TABLE_HEADER
;
597 /// SLIT Version (as defined in ACPI 4.0 spec.)
599 #define EFI_ACPI_4_0_SYSTEM_LOCALITY_DISTANCE_INFORMATION_TABLE_REVISION 0x01
602 /// Corrected Platform Error Polling Table (CPEP)
605 EFI_ACPI_DESCRIPTION_HEADER Header
;
607 } EFI_ACPI_4_0_CORRECTED_PLATFORM_ERROR_POLLING_TABLE_HEADER
;
610 /// CPEP Version (as defined in ACPI 4.0 spec.)
612 #define EFI_ACPI_4_0_CORRECTED_PLATFORM_ERROR_POLLING_TABLE_REVISION 0x01
615 // CPEP processor structure types.
617 #define EFI_ACPI_4_0_CPEP_PROCESSOR_APIC_SAPIC 0x00
620 /// Corrected Platform Error Polling Processor Structure Definition
627 UINT32 PollingInterval
;
628 } EFI_ACPI_4_0_CPEP_PROCESSOR_APIC_SAPIC_STRUCTURE
;
631 /// Maximum System Characteristics Table (MSCT)
634 EFI_ACPI_DESCRIPTION_HEADER Header
;
635 UINT32 OffsetProxDomInfo
;
636 UINT32 MaximumNumberOfProximityDomains
;
637 UINT32 MaximumNumberOfClockDomains
;
638 UINT64 MaximumPhysicalAddress
;
639 } EFI_ACPI_4_0_MAXIMUM_SYSTEM_CHARACTERISTICS_TABLE_HEADER
;
642 /// MSCT Version (as defined in ACPI 4.0 spec.)
644 #define EFI_ACPI_4_0_MAXIMUM_SYSTEM_CHARACTERISTICS_TABLE_REVISION 0x01
647 /// Maximum Proximity Domain Information Structure Definition
652 UINT32 ProximityDomainRangeLow
;
653 UINT32 ProximityDomainRangeHigh
;
654 UINT32 MaximumProcessorCapacity
;
655 UINT64 MaximumMemoryCapacity
;
656 } EFI_ACPI_4_0_MAXIMUM_PROXIMITY_DOMAIN_INFORMATION_STRUCTURE
;
659 /// Boot Error Record Table (BERT)
662 EFI_ACPI_DESCRIPTION_HEADER Header
;
663 UINT32 BootErrorRegionLength
;
664 UINT64 BootErrorRegion
;
665 } EFI_ACPI_4_0_BOOT_ERROR_RECORD_TABLE_HEADER
;
668 /// BERT Version (as defined in ACPI 4.0 spec.)
670 #define EFI_ACPI_4_0_BOOT_ERROR_RECORD_TABLE_REVISION 0x01
673 /// Boot Error Region Block Status Definition
676 UINT32 UncorrectableErrorValid
:1;
677 UINT32 CorrectableErrorValid
:1;
678 UINT32 MultipleUncorrectableErrors
:1;
679 UINT32 MultipleCorrectableErrors
:1;
680 UINT32 ErrorDataEntryCount
:10;
682 } EFI_ACPI_4_0_ERROR_BLOCK_STATUS
;
685 /// Boot Error Region Definition
688 EFI_ACPI_4_0_ERROR_BLOCK_STATUS BlockStatus
;
689 UINT32 RawDataOffset
;
690 UINT32 RawDataLength
;
692 UINT32 ErrorSeverity
;
693 } EFI_ACPI_4_0_BOOT_ERROR_REGION_STRUCTURE
;
696 // Boot Error Severity types
698 #define EFI_ACPI_4_0_ERROR_SEVERITY_CORRECTABLE 0x00
699 #define EFI_ACPI_4_0_ERROR_SEVERITY_FATAL 0x01
700 #define EFI_ACPI_4_0_ERROR_SEVERITY_CORRECTED 0x02
701 #define EFI_ACPI_4_0_ERROR_SEVERITY_NONE 0x03
704 /// Generic Error Data Entry Definition
707 UINT8 SectionType
[16];
708 UINT32 ErrorSeverity
;
710 UINT8 ValidationBits
;
712 UINT32 ErrorDataLength
;
715 } EFI_ACPI_4_0_GENERIC_ERROR_DATA_ENTRY_STRUCTURE
;
718 /// Generic Error Data Entry Version (as defined in ACPI 4.0 spec.)
720 #define EFI_ACPI_4_0_GENERIC_ERROR_DATA_ENTRY_REVISION 0x0201
723 /// HEST - Hardware Error Source Table
726 EFI_ACPI_DESCRIPTION_HEADER Header
;
727 UINT32 ErrorSourceCount
;
728 } EFI_ACPI_4_0_HARDWARE_ERROR_SOURCE_TABLE_HEADER
;
731 /// HEST Version (as defined in ACPI 4.0 spec.)
733 #define EFI_ACPI_4_0_HARDWARE_ERROR_SOURCE_TABLE_REVISION 0x01
736 // Error Source structure types.
738 #define EFI_ACPI_4_0_IA32_ARCHITECTURE_MACHINE_CHECK_EXCEPTION 0x00
739 #define EFI_ACPI_4_0_IA32_ARCHITECTURE_CORRECTED_MACHINE_CHECK 0x01
740 #define EFI_ACPI_4_0_IA32_ARCHITECTURE_NMI_ERROR 0x02
741 #define EFI_ACPI_4_0_PCI_EXPRESS_ROOT_PORT_AER 0x06
742 #define EFI_ACPI_4_0_PCI_EXPRESS_DEVICE_AER 0x07
743 #define EFI_ACPI_4_0_PCI_EXPRESS_BRIDGE_AER 0x08
744 #define EFI_ACPI_4_0_GENERIC_HARDWARE_ERROR 0x09
747 // Error Source structure flags.
749 #define EFI_ACPI_4_0_ERROR_SOURCE_FLAG_FIRMWARE_FIRST (1 << 0)
750 #define EFI_ACPI_4_0_ERROR_SOURCE_FLAG_GLOBAL (1 << 1)
753 /// IA-32 Architecture Machine Check Exception Structure Definition
761 UINT32 NumberOfRecordsToPreAllocate
;
762 UINT32 MaxSectionsPerRecord
;
763 UINT64 GlobalCapabilityInitData
;
764 UINT64 GlobalControlInitData
;
765 UINT8 NumberOfHardwareBanks
;
767 } EFI_ACPI_4_0_IA32_ARCHITECTURE_MACHINE_CHECK_EXCEPTION_STRUCTURE
;
770 /// IA-32 Architecture Machine Check Bank Structure Definition
774 UINT8 ClearStatusOnInitialization
;
775 UINT8 StatusDataFormat
;
777 UINT32 ControlRegisterMsrAddress
;
778 UINT64 ControlInitData
;
779 UINT32 StatusRegisterMsrAddress
;
780 UINT32 AddressRegisterMsrAddress
;
781 UINT32 MiscRegisterMsrAddress
;
782 } EFI_ACPI_4_0_IA32_ARCHITECTURE_MACHINE_CHECK_ERROR_BANK_STRUCTURE
;
785 /// IA-32 Architecture Machine Check Bank Structure MCA data format
787 #define EFI_ACPI_4_0_IA32_ARCHITECTURE_MACHINE_CHECK_ERROR_DATA_FORMAT_IA32 0x00
788 #define EFI_ACPI_4_0_IA32_ARCHITECTURE_MACHINE_CHECK_ERROR_DATA_FORMAT_INTEL64 0x01
789 #define EFI_ACPI_4_0_IA32_ARCHITECTURE_MACHINE_CHECK_ERROR_DATA_FORMAT_AMD64 0x02
792 // Hardware Error Notification types. All other values are reserved
794 #define EFI_ACPI_4_0_HARDWARE_ERROR_NOTIFICATION_POLLED 0x00
795 #define EFI_ACPI_4_0_HARDWARE_ERROR_NOTIFICATION_EXTERNAL_INTERRUPT 0x01
796 #define EFI_ACPI_4_0_HARDWARE_ERROR_NOTIFICATION_LOCAL_INTERRUPT 0x02
797 #define EFI_ACPI_4_0_HARDWARE_ERROR_NOTIFICATION_SCI 0x03
798 #define EFI_ACPI_4_0_HARDWARE_ERROR_NOTIFICATION_NMI 0x04
801 /// Hardware Error Notification Configuration Write Enable Structure Definition
805 UINT16 PollInterval
:1;
806 UINT16 SwitchToPollingThresholdValue
:1;
807 UINT16 SwitchToPollingThresholdWindow
:1;
808 UINT16 ErrorThresholdValue
:1;
809 UINT16 ErrorThresholdWindow
:1;
811 } EFI_ACPI_4_0_HARDWARE_ERROR_NOTIFICATION_CONFIGURATION_WRITE_ENABLE_STRUCTURE
;
814 /// Hardware Error Notification Structure Definition
819 EFI_ACPI_4_0_HARDWARE_ERROR_NOTIFICATION_CONFIGURATION_WRITE_ENABLE_STRUCTURE ConfigurationWriteEnable
;
822 UINT32 SwitchToPollingThresholdValue
;
823 UINT32 SwitchToPollingThresholdWindow
;
824 UINT32 ErrorThresholdValue
;
825 UINT32 ErrorThresholdWindow
;
826 } EFI_ACPI_4_0_HARDWARE_ERROR_NOTIFICATION_STRUCTURE
;
829 /// IA-32 Architecture Corrected Machine Check Structure Definition
837 UINT32 NumberOfRecordsToPreAllocate
;
838 UINT32 MaxSectionsPerRecord
;
839 EFI_ACPI_4_0_HARDWARE_ERROR_NOTIFICATION_STRUCTURE NotificationStructure
;
840 UINT8 NumberOfHardwareBanks
;
842 } EFI_ACPI_4_0_IA32_ARCHITECTURE_CORRECTED_MACHINE_CHECK_STRUCTURE
;
845 /// IA-32 Architecture NMI Error Structure Definition
851 UINT32 NumberOfRecordsToPreAllocate
;
852 UINT32 MaxSectionsPerRecord
;
853 UINT32 MaxRawDataLength
;
854 } EFI_ACPI_4_0_IA32_ARCHITECTURE_NMI_ERROR_STRUCTURE
;
857 /// PCI Express Root Port AER Structure Definition
865 UINT32 NumberOfRecordsToPreAllocate
;
866 UINT32 MaxSectionsPerRecord
;
870 UINT16 DeviceControl
;
872 UINT32 UncorrectableErrorMask
;
873 UINT32 UncorrectableErrorSeverity
;
874 UINT32 CorrectableErrorMask
;
875 UINT32 AdvancedErrorCapabilitiesAndControl
;
876 UINT32 RootErrorCommand
;
877 } EFI_ACPI_4_0_PCI_EXPRESS_ROOT_PORT_AER_STRUCTURE
;
880 /// PCI Express Device AER Structure Definition
888 UINT32 NumberOfRecordsToPreAllocate
;
889 UINT32 MaxSectionsPerRecord
;
893 UINT16 DeviceControl
;
895 UINT32 UncorrectableErrorMask
;
896 UINT32 UncorrectableErrorSeverity
;
897 UINT32 CorrectableErrorMask
;
898 UINT32 AdvancedErrorCapabilitiesAndControl
;
899 } EFI_ACPI_4_0_PCI_EXPRESS_DEVICE_AER_STRUCTURE
;
902 /// PCI Express Bridge AER Structure Definition
910 UINT32 NumberOfRecordsToPreAllocate
;
911 UINT32 MaxSectionsPerRecord
;
915 UINT16 DeviceControl
;
917 UINT32 UncorrectableErrorMask
;
918 UINT32 UncorrectableErrorSeverity
;
919 UINT32 CorrectableErrorMask
;
920 UINT32 AdvancedErrorCapabilitiesAndControl
;
921 UINT32 SecondaryUncorrectableErrorMask
;
922 UINT32 SecondaryUncorrectableErrorSeverity
;
923 UINT32 SecondaryAdvancedErrorCapabilitiesAndControl
;
924 } EFI_ACPI_4_0_PCI_EXPRESS_BRIDGE_AER_STRUCTURE
;
927 /// Generic Hardware Error Source Structure Definition
932 UINT16 RelatedSourceId
;
935 UINT32 NumberOfRecordsToPreAllocate
;
936 UINT32 MaxSectionsPerRecord
;
937 UINT32 MaxRawDataLength
;
938 EFI_ACPI_4_0_GENERIC_ADDRESS_STRUCTURE ErrorStatusAddress
;
939 EFI_ACPI_4_0_HARDWARE_ERROR_NOTIFICATION_STRUCTURE NotificationStructure
;
940 UINT32 ErrorStatusBlockLength
;
941 } EFI_ACPI_4_0_GENERIC_HARDWARE_ERROR_SOURCE_STRUCTURE
;
944 /// Generic Error Status Definition
947 EFI_ACPI_4_0_ERROR_BLOCK_STATUS BlockStatus
;
948 UINT32 RawDataOffset
;
949 UINT32 RawDataLength
;
951 UINT32 ErrorSeverity
;
952 } EFI_ACPI_4_0_GENERIC_ERROR_STATUS_STRUCTURE
;
955 /// ERST - Error Record Serialization Table
958 EFI_ACPI_DESCRIPTION_HEADER Header
;
959 UINT32 SerializationHeaderSize
;
961 UINT32 InstructionEntryCount
;
962 } EFI_ACPI_4_0_ERROR_RECORD_SERIALIZATION_TABLE_HEADER
;
965 /// ERST Version (as defined in ACPI 4.0 spec.)
967 #define EFI_ACPI_4_0_ERROR_RECORD_SERIALIZATION_TABLE_REVISION 0x01
970 /// ERST Serialization Actions
972 #define EFI_ACPI_4_0_ERST_BEGIN_WRITE_OPERATION 0x00
973 #define EFI_ACPI_4_0_ERST_BEGIN_READ_OPERATION 0x01
974 #define EFI_ACPI_4_0_ERST_BEGIN_CLEAR_OPERATION 0x02
975 #define EFI_ACPI_4_0_ERST_END_OPERATION 0x03
976 #define EFI_ACPI_4_0_ERST_SET_RECORD_OFFSET 0x04
977 #define EFI_ACPI_4_0_ERST_EXECUTE_OPERATION 0x05
978 #define EFI_ACPI_4_0_ERST_CHECK_BUSY_STATUS 0x06
979 #define EFI_ACPI_4_0_ERST_GET_COMMAND_STATUS 0x07
980 #define EFI_ACPI_4_0_ERST_GET_RECORD_IDENTIFIER 0x08
981 #define EFI_ACPI_4_0_ERST_SET_RECORD_IDENTIFIER 0x09
982 #define EFI_ACPI_4_0_ERST_GET_RECORD_COUNT 0x0A
983 #define EFI_ACPI_4_0_ERST_BEGIN_DUMMY_WRITE_OPERATION 0x0B
984 #define EFI_ACPI_4_0_ERST_GET_ERROR_LOG_ADDRESS_RANGE 0x0D
985 #define EFI_ACPI_4_0_ERST_GET_ERROR_LOG_ADDRESS_RANGE_LENGTH 0x0E
986 #define EFI_ACPI_4_0_ERST_GET_ERROR_LOG_ADDRESS_RANGE_ATTRIBUTES 0x0F
989 /// ERST Action Command Status
991 #define EFI_ACPI_4_0_EINJ_STATUS_SUCCESS 0x00
992 #define EFI_ACPI_4_0_EINJ_STATUS_NOT_ENOUGH_SPACE 0x01
993 #define EFI_ACPI_4_0_EINJ_STATUS_HARDWARE_NOT_AVAILABLE 0x02
994 #define EFI_ACPI_4_0_EINJ_STATUS_FAILED 0x03
995 #define EFI_ACPI_4_0_EINJ_STATUS_RECORD_STORE_EMPTY 0x04
996 #define EFI_ACPI_4_0_EINJ_STATUS_RECORD_NOT_FOUND 0x05
999 /// ERST Serialization Instructions
1001 #define EFI_ACPI_4_0_ERST_READ_REGISTER 0x00
1002 #define EFI_ACPI_4_0_ERST_READ_REGISTER_VALUE 0x01
1003 #define EFI_ACPI_4_0_ERST_WRITE_REGISTER 0x02
1004 #define EFI_ACPI_4_0_ERST_WRITE_REGISTER_VALUE 0x03
1005 #define EFI_ACPI_4_0_ERST_NOOP 0x04
1006 #define EFI_ACPI_4_0_ERST_LOAD_VAR1 0x05
1007 #define EFI_ACPI_4_0_ERST_LOAD_VAR2 0x06
1008 #define EFI_ACPI_4_0_ERST_STORE_VAR1 0x07
1009 #define EFI_ACPI_4_0_ERST_ADD 0x08
1010 #define EFI_ACPI_4_0_ERST_SUBTRACT 0x09
1011 #define EFI_ACPI_4_0_ERST_ADD_VALUE 0x0A
1012 #define EFI_ACPI_4_0_ERST_SUBTRACT_VALUE 0x0B
1013 #define EFI_ACPI_4_0_ERST_STALL 0x0C
1014 #define EFI_ACPI_4_0_ERST_STALL_WHILE_TRUE 0x0D
1015 #define EFI_ACPI_4_0_ERST_SKIP_NEXT_INSTRUCTION_IF_TRUE 0x0E
1016 #define EFI_ACPI_4_0_ERST_GOTO 0x0F
1017 #define EFI_ACPI_4_0_ERST_SET_SRC_ADDRESS_BASE 0x10
1018 #define EFI_ACPI_4_0_ERST_SET_DST_ADDRESS_BASE 0x11
1019 #define EFI_ACPI_4_0_ERST_MOVE_DATA 0x12
1022 /// ERST Instruction Flags
1024 #define EFI_ACPI_4_0_ERST_PRESERVE_REGISTER 0x01
1027 /// ERST Serialization Instruction Entry
1030 UINT8 SerializationAction
;
1034 EFI_ACPI_4_0_GENERIC_ADDRESS_STRUCTURE RegisterRegion
;
1037 } EFI_ACPI_4_0_ERST_SERIALIZATION_INSTRUCTION_ENTRY
;
1040 /// EINJ - Error Injection Table
1043 EFI_ACPI_DESCRIPTION_HEADER Header
;
1044 UINT32 InjectionHeaderSize
;
1045 UINT8 InjectionFlags
;
1047 UINT32 InjectionEntryCount
;
1048 } EFI_ACPI_4_0_ERROR_INJECTION_TABLE_HEADER
;
1051 /// EINJ Version (as defined in ACPI 4.0 spec.)
1053 #define EFI_ACPI_4_0_ERROR_INJECTION_TABLE_REVISION 0x01
1056 /// EINJ Error Injection Actions
1058 #define EFI_ACPI_4_0_EINJ_BEGIN_INJECTION_OPERATION 0x00
1059 #define EFI_ACPI_4_0_EINJ_GET_TRIGGER_ERROR_ACTION_TABLE 0x01
1060 #define EFI_ACPI_4_0_EINJ_SET_ERROR_TYPE 0x02
1061 #define EFI_ACPI_4_0_EINJ_GET_ERROR_TYPE 0x03
1062 #define EFI_ACPI_4_0_EINJ_END_OPERATION 0x04
1063 #define EFI_ACPI_4_0_EINJ_EXECUTE_OPERATION 0x05
1064 #define EFI_ACPI_4_0_EINJ_CHECK_BUSY_STATUS 0x06
1065 #define EFI_ACPI_4_0_EINJ_GET_COMMAND_STATUS 0x07
1066 #define EFI_ACPI_4_0_EINJ_TRIGGER_ERROR 0xFF
1069 /// EINJ Action Command Status
1071 #define EFI_ACPI_4_0_EINJ_STATUS_SUCCESS 0x00
1072 #define EFI_ACPI_4_0_EINJ_STATUS_UNKNOWN_FAILURE 0x01
1073 #define EFI_ACPI_4_0_EINJ_STATUS_INVALID_ACCESS 0x02
1076 /// EINJ Error Type Definition
1078 #define EFI_ACPI_4_0_EINJ_ERROR_PROCESSOR_CORRECTABLE (1 << 0)
1079 #define EFI_ACPI_4_0_EINJ_ERROR_PROCESSOR_UNCORRECTABLE_NONFATAL (1 << 1)
1080 #define EFI_ACPI_4_0_EINJ_ERROR_PROCESSOR_UNCORRECTABLE_FATAL (1 << 2)
1081 #define EFI_ACPI_4_0_EINJ_ERROR_MEMORY_CORRECTABLE (1 << 3)
1082 #define EFI_ACPI_4_0_EINJ_ERROR_MEMORY_UNCORRECTABLE_NONFATAL (1 << 4)
1083 #define EFI_ACPI_4_0_EINJ_ERROR_MEMORY_UNCORRECTABLE_FATAL (1 << 5)
1084 #define EFI_ACPI_4_0_EINJ_ERROR_PCI_EXPRESS_CORRECTABLE (1 << 6)
1085 #define EFI_ACPI_4_0_EINJ_ERROR_PCI_EXPRESS_UNCORRECTABLE_NONFATAL (1 << 7)
1086 #define EFI_ACPI_4_0_EINJ_ERROR_PCI_EXPRESS_UNCORRECTABLE_FATAL (1 << 8)
1087 #define EFI_ACPI_4_0_EINJ_ERROR_PLATFORM_CORRECTABLE (1 << 9)
1088 #define EFI_ACPI_4_0_EINJ_ERROR_PLATFORM_UNCORRECTABLE_NONFATAL (1 << 10)
1089 #define EFI_ACPI_4_0_EINJ_ERROR_PLATFORM_UNCORRECTABLE_FATAL (1 << 11)
1092 /// EINJ Injection Instructions
1094 #define EFI_ACPI_4_0_EINJ_READ_REGISTER 0x00
1095 #define EFI_ACPI_4_0_EINJ_READ_REGISTER_VALUE 0x01
1096 #define EFI_ACPI_4_0_EINJ_WRITE_REGISTER 0x02
1097 #define EFI_ACPI_4_0_EINJ_WRITE_REGISTER_VALUE 0x03
1098 #define EFI_ACPI_4_0_EINJ_NOOP 0x04
1101 /// EINJ Instruction Flags
1103 #define EFI_ACPI_4_0_EINJ_PRESERVE_REGISTER 0x01
1106 /// EINJ Injection Instruction Entry
1109 UINT8 InjectionAction
;
1113 EFI_ACPI_4_0_GENERIC_ADDRESS_STRUCTURE RegisterRegion
;
1116 } EFI_ACPI_4_0_EINJ_INJECTION_INSTRUCTION_ENTRY
;
1119 /// EINJ Trigger Action Table
1126 } EFI_ACPI_4_0_EINJ_TRIGGER_ACTION_TABLE
;
1129 // Known table signatures
1133 /// "RSD PTR " Root System Description Pointer
1135 #define EFI_ACPI_4_0_ROOT_SYSTEM_DESCRIPTION_POINTER_SIGNATURE SIGNATURE_64('R', 'S', 'D', ' ', 'P', 'T', 'R', ' ')
1138 /// "APIC" Multiple APIC Description Table
1140 #define EFI_ACPI_4_0_MULTIPLE_APIC_DESCRIPTION_TABLE_SIGNATURE SIGNATURE_32('A', 'P', 'I', 'C')
1143 /// "BERT" Boot Error Record Table
1145 #define EFI_ACPI_4_0_BOOT_ERROR_RECORD_TABLE_SIGNATURE SIGNATURE_32('B', 'E', 'R', 'T')
1148 /// "CPEP" Corrected Platform Error Polling Table
1150 #define EFI_ACPI_4_0_CORRECTED_PLATFORM_ERROR_POLLING_TABLE_SIGNATURE SIGNATURE_32('C', 'P', 'E', 'P')
1153 /// "DSDT" Differentiated System Description Table
1155 #define EFI_ACPI_4_0_DIFFERENTIATED_SYSTEM_DESCRIPTION_TABLE_SIGNATURE SIGNATURE_32('D', 'S', 'D', 'T')
1158 /// "ECDT" Embedded Controller Boot Resources Table
1160 #define EFI_ACPI_4_0_EMBEDDED_CONTROLLER_BOOT_RESOURCES_TABLE_SIGNATURE SIGNATURE_32('E', 'C', 'D', 'T')
1163 /// "EINJ" Error Injection Table
1165 #define EFI_ACPI_4_0_ERROR_INJECTION_TABLE_SIGNATURE SIGNATURE_32('E', 'I', 'N', 'J')
1168 /// "ERST" Error Record Serialization Table
1170 #define EFI_ACPI_4_0_ERROR_RECORD_SERIALIZATION_TABLE_SIGNATURE SIGNATURE_32('E', 'R', 'S', 'T')
1173 /// "FACP" Fixed ACPI Description Table
1175 #define EFI_ACPI_4_0_FIXED_ACPI_DESCRIPTION_TABLE_SIGNATURE SIGNATURE_32('F', 'A', 'C', 'P')
1178 /// "FACS" Firmware ACPI Control Structure
1180 #define EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE_SIGNATURE SIGNATURE_32('F', 'A', 'C', 'S')
1183 /// "HEST" Hardware Error Source Table
1185 #define EFI_ACPI_4_0_HARDWARE_ERROR_SOURCE_TABLE_SIGNATURE SIGNATURE_32('H', 'E', 'S', 'T')
1188 /// "MSCT" Maximum System Characteristics Table
1190 #define EFI_ACPI_4_0_MAXIMUM_SYSTEM_CHARACTERISTICS_TABLE_SIGNATURE SIGNATURE_32('M', 'S', 'C', 'T')
1193 /// "PSDT" Persistent System Description Table
1195 #define EFI_ACPI_4_0_PERSISTENT_SYSTEM_DESCRIPTION_TABLE_SIGNATURE SIGNATURE_32('P', 'S', 'D', 'T')
1198 /// "RSDT" Root System Description Table
1200 #define EFI_ACPI_4_0_ROOT_SYSTEM_DESCRIPTION_TABLE_SIGNATURE SIGNATURE_32('R', 'S', 'D', 'T')
1203 /// "SBST" Smart Battery Specification Table
1205 #define EFI_ACPI_4_0_SMART_BATTERY_SPECIFICATION_TABLE_SIGNATURE SIGNATURE_32('S', 'B', 'S', 'T')
1208 /// "SLIT" System Locality Information Table
1210 #define EFI_ACPI_4_0_SYSTEM_LOCALITY_INFORMATION_TABLE_SIGNATURE SIGNATURE_32('S', 'L', 'I', 'T')
1213 /// "SRAT" System Resource Affinity Table
1215 #define EFI_ACPI_4_0_SYSTEM_RESOURCE_AFFINITY_TABLE_SIGNATURE SIGNATURE_32('S', 'R', 'A', 'T')
1218 /// "SSDT" Secondary System Description Table
1220 #define EFI_ACPI_4_0_SECONDARY_SYSTEM_DESCRIPTION_TABLE_SIGNATURE SIGNATURE_32('S', 'S', 'D', 'T')
1223 /// "XSDT" Extended System Description Table
1225 #define EFI_ACPI_4_0_EXTENDED_SYSTEM_DESCRIPTION_TABLE_SIGNATURE SIGNATURE_32('X', 'S', 'D', 'T')
1228 /// "BOOT" MS Simple Boot Spec
1230 #define EFI_ACPI_4_0_SIMPLE_BOOT_FLAG_TABLE_SIGNATURE SIGNATURE_32('B', 'O', 'O', 'T')
1233 /// "DBGP" MS Debug Port Spec
1235 #define EFI_ACPI_4_0_DEBUG_PORT_TABLE_SIGNATURE SIGNATURE_32('D', 'B', 'G', 'P')
1238 /// "DMAR" DMA Remapping Table
1240 #define EFI_ACPI_4_0_DMA_REMAPPING_TABLE_SIGNATURE SIGNATURE_32('D', 'M', 'A', 'R')
1243 /// "ETDT" Event Timer Description Table
1245 #define EFI_ACPI_4_0_EVENT_TIMER_DESCRIPTION_TABLE_SIGNATURE SIGNATURE_32('E', 'T', 'D', 'T')
1248 /// "HPET" IA-PC High Precision Event Timer Table
1250 #define EFI_ACPI_4_0_HIGH_PRECISION_EVENT_TIMER_TABLE_SIGNATURE SIGNATURE_32('H', 'P', 'E', 'T')
1253 /// "iBFT" iSCSI Boot Firmware Table
1255 #define EFI_ACPI_4_0_ISCSI_BOOT_FIRMWARE_TABLE_SIGNATURE SIGNATURE_32('i', 'B', 'F', 'T')
1258 /// "IVRS" I/O Virtualization Reporting Structure
1260 #define EFI_ACPI_4_0_IO_VIRTUALIZATION_REPORTING_STRUCTURE_SIGNATURE SIGNATURE_32('I', 'V', 'R', 'S')
1263 /// "MCFG" PCI Express Memory Mapped Configuration Space Base Address Description Table
1265 #define EFI_ACPI_4_0_PCI_EXPRESS_MEMORY_MAPPED_CONFIGURATION_SPACE_BASE_ADDRESS_DESCRIPTION_TABLE_SIGNATURE SIGNATURE_32('M', 'C', 'F', 'G')
1268 /// "MCHI" Management Controller Host Interface Table
1270 #define EFI_ACPI_4_0_MANAGEMENT_CONTROLLER_HOST_INTERFACE_TABLE_SIGNATURE SIGNATURE_32('M', 'C', 'H', 'I')
1273 /// "SPCR" Serial Port Concole Redirection Table
1275 #define EFI_ACPI_4_0_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_SIGNATURE SIGNATURE_32('S', 'P', 'C', 'R')
1278 /// "SPMI" Server Platform Management Interface Table
1280 #define EFI_ACPI_4_0_SERVER_PLATFORM_MANAGEMENT_INTERFACE_TABLE_SIGNATURE SIGNATURE_32('S', 'P', 'M', 'I')
1283 /// "TCPA" Trusted Computing Platform Alliance Capabilities Table
1285 #define EFI_ACPI_4_0_TRUSTED_COMPUTING_PLATFORM_ALLIANCE_CAPABILITIES_TABLE_SIGNATURE SIGNATURE_32('T', 'C', 'P', 'A')
1288 /// "UEFI" UEFI ACPI Data Table
1290 #define EFI_ACPI_4_0_UEFI_ACPI_DATA_TABLE_SIGNATURE SIGNATURE_32('U', 'E', 'F', 'I')
1293 /// "WAET" Windows ACPI Enlightenment Table
1295 #define EFI_ACPI_4_0_WINDOWS_ACPI_ENLIGHTENMENT_TABLE_SIGNATURE SIGNATURE_32('W', 'A', 'E', 'T')
1298 /// "WDAT" Watchdog Action Table
1300 #define EFI_ACPI_4_0_WATCHDOG_ACTION_TABLE_SIGNATURE SIGNATURE_32('W', 'D', 'A', 'T')
1303 /// "WDRT" Watchdog Resource Table
1305 #define EFI_ACPI_4_0_WATCHDOG_RESOURCE_TABLE_SIGNATURE SIGNATURE_32('W', 'D', 'R', 'T')