2 Include file that supports UEFI.
4 This include file must contain things defined in the UEFI 2.7 specification.
5 If a code construct is defined in the UEFI 2.7 specification it must be included
8 Copyright (c) 2006 - 2021, Intel Corporation. All rights reserved.<BR>
9 Portions Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
11 SPDX-License-Identifier: BSD-2-Clause-Patent
15 #ifndef __UEFI_SPEC_H__
16 #define __UEFI_SPEC_H__
18 #include <Uefi/UefiMultiPhase.h>
20 #include <Protocol/DevicePath.h>
21 #include <Protocol/SimpleTextIn.h>
22 #include <Protocol/SimpleTextInEx.h>
23 #include <Protocol/SimpleTextOut.h>
26 /// Enumeration of EFI memory allocation types.
30 /// Allocate any available range of pages that satisfies the request.
34 /// Allocate any available range of pages whose uppermost address is less than
35 /// or equal to a specified maximum address.
39 /// Allocate pages at a specified address.
43 /// Maximum enumeration value that may be used for bounds checking.
49 // Bit definitions for EFI_TIME.Daylight
51 #define EFI_TIME_ADJUST_DAYLIGHT 0x01
52 #define EFI_TIME_IN_DAYLIGHT 0x02
55 /// Value definition for EFI_TIME.TimeZone.
57 #define EFI_UNSPECIFIED_TIMEZONE 0x07FF
60 // Memory cacheability attributes
62 #define EFI_MEMORY_UC 0x0000000000000001ULL
63 #define EFI_MEMORY_WC 0x0000000000000002ULL
64 #define EFI_MEMORY_WT 0x0000000000000004ULL
65 #define EFI_MEMORY_WB 0x0000000000000008ULL
66 #define EFI_MEMORY_UCE 0x0000000000000010ULL
68 // Physical memory protection attributes
70 // Note: UEFI spec 2.5 and following: use EFI_MEMORY_RO as write-protected physical memory
71 // protection attribute. Also, EFI_MEMORY_WP means cacheability attribute.
73 #define EFI_MEMORY_WP 0x0000000000001000ULL
74 #define EFI_MEMORY_RP 0x0000000000002000ULL
75 #define EFI_MEMORY_XP 0x0000000000004000ULL
76 #define EFI_MEMORY_RO 0x0000000000020000ULL
78 // Physical memory persistence attribute.
79 // The memory region supports byte-addressable non-volatility.
81 #define EFI_MEMORY_NV 0x0000000000008000ULL
83 // The memory region provides higher reliability relative to other memory in the system.
84 // If all memory has the same reliability, then this bit is not used.
86 #define EFI_MEMORY_MORE_RELIABLE 0x0000000000010000ULL
89 // Note: UEFI spec 2.8 and following:
91 // Specific-purpose memory (SPM). The memory is earmarked for
92 // specific purposes such as for specific device drivers or applications.
93 // The SPM attribute serves as a hint to the OS to avoid allocating this
94 // memory for core OS data or code that can not be relocated.
96 #define EFI_MEMORY_SP 0x0000000000040000ULL
98 // If this flag is set, the memory region is capable of being
99 // protected with the CPU's memory cryptographic
100 // capabilities. If this flag is clear, the memory region is not
101 // capable of being protected with the CPU's memory
102 // cryptographic capabilities or the CPU does not support CPU
103 // memory cryptographic capabilities.
105 #define EFI_MEMORY_CPU_CRYPTO 0x0000000000080000ULL
108 // Runtime memory attribute
110 #define EFI_MEMORY_RUNTIME 0x8000000000000000ULL
113 // Attributes bitmasks, grouped by type
115 #define EFI_CACHE_ATTRIBUTE_MASK (EFI_MEMORY_UC | EFI_MEMORY_WC | EFI_MEMORY_WT | EFI_MEMORY_WB | EFI_MEMORY_UCE | EFI_MEMORY_WP)
116 #define EFI_MEMORY_ACCESS_MASK (EFI_MEMORY_RP | EFI_MEMORY_XP | EFI_MEMORY_RO)
117 #define EFI_MEMORY_ATTRIBUTE_MASK (EFI_MEMORY_ACCESS_MASK | EFI_MEMORY_SP | EFI_MEMORY_CPU_CRYPTO)
120 /// Memory descriptor version number.
122 #define EFI_MEMORY_DESCRIPTOR_VERSION 1
125 /// Definition of an EFI memory descriptor.
129 /// Type of the memory region.
130 /// Type EFI_MEMORY_TYPE is defined in the
131 /// AllocatePages() function description.
135 /// Physical address of the first byte in the memory region. PhysicalStart must be
136 /// aligned on a 4 KiB boundary, and must not be above 0xfffffffffffff000. Type
137 /// EFI_PHYSICAL_ADDRESS is defined in the AllocatePages() function description
139 EFI_PHYSICAL_ADDRESS PhysicalStart
;
141 /// Virtual address of the first byte in the memory region.
142 /// VirtualStart must be aligned on a 4 KiB boundary,
143 /// and must not be above 0xfffffffffffff000.
145 EFI_VIRTUAL_ADDRESS VirtualStart
;
147 /// NumberOfPagesNumber of 4 KiB pages in the memory region.
148 /// NumberOfPages must not be 0, and must not be any value
149 /// that would represent a memory page with a start address,
150 /// either physical or virtual, above 0xfffffffffffff000.
152 UINT64 NumberOfPages
;
154 /// Attributes of the memory region that describe the bit mask of capabilities
155 /// for that memory region, and not necessarily the current settings for that
159 } EFI_MEMORY_DESCRIPTOR
;
162 Allocates memory pages from the system.
164 @param[in] Type The type of allocation to perform.
165 @param[in] MemoryType The type of memory to allocate.
166 MemoryType values in the range 0x70000000..0x7FFFFFFF
167 are reserved for OEM use. MemoryType values in the range
168 0x80000000..0xFFFFFFFF are reserved for use by UEFI OS loaders
169 that are provided by operating system vendors.
170 @param[in] Pages The number of contiguous 4 KB pages to allocate.
171 @param[in, out] Memory The pointer to a physical address. On input, the way in which the address is
172 used depends on the value of Type.
174 @retval EFI_SUCCESS The requested pages were allocated.
175 @retval EFI_INVALID_PARAMETER 1) Type is not AllocateAnyPages or
176 AllocateMaxAddress or AllocateAddress.
177 2) MemoryType is in the range
178 EfiMaxMemoryType..0x6FFFFFFF.
180 4) MemoryType is EfiPersistentMemory.
181 @retval EFI_OUT_OF_RESOURCES The pages could not be allocated.
182 @retval EFI_NOT_FOUND The requested pages could not be found.
187 (EFIAPI
*EFI_ALLOCATE_PAGES
)(
188 IN EFI_ALLOCATE_TYPE Type
,
189 IN EFI_MEMORY_TYPE MemoryType
,
191 IN OUT EFI_PHYSICAL_ADDRESS
*Memory
197 @param[in] Memory The base physical address of the pages to be freed.
198 @param[in] Pages The number of contiguous 4 KB pages to free.
200 @retval EFI_SUCCESS The requested pages were freed.
201 @retval EFI_INVALID_PARAMETER Memory is not a page-aligned address or Pages is invalid.
202 @retval EFI_NOT_FOUND The requested memory pages were not allocated with
208 (EFIAPI
*EFI_FREE_PAGES
)(
209 IN EFI_PHYSICAL_ADDRESS Memory
,
214 Returns the current memory map.
216 @param[in, out] MemoryMapSize A pointer to the size, in bytes, of the MemoryMap buffer.
217 On input, this is the size of the buffer allocated by the caller.
218 On output, it is the size of the buffer returned by the firmware if
219 the buffer was large enough, or the size of the buffer needed to contain
220 the map if the buffer was too small.
221 @param[out] MemoryMap A pointer to the buffer in which firmware places the current memory
223 @param[out] MapKey A pointer to the location in which firmware returns the key for the
225 @param[out] DescriptorSize A pointer to the location in which firmware returns the size, in bytes, of
226 an individual EFI_MEMORY_DESCRIPTOR.
227 @param[out] DescriptorVersion A pointer to the location in which firmware returns the version number
228 associated with the EFI_MEMORY_DESCRIPTOR.
230 @retval EFI_SUCCESS The memory map was returned in the MemoryMap buffer.
231 @retval EFI_BUFFER_TOO_SMALL The MemoryMap buffer was too small. The current buffer size
232 needed to hold the memory map is returned in MemoryMapSize.
233 @retval EFI_INVALID_PARAMETER 1) MemoryMapSize is NULL.
234 2) The MemoryMap buffer is not too small and MemoryMap is
240 (EFIAPI
*EFI_GET_MEMORY_MAP
)(
241 IN OUT UINTN
*MemoryMapSize
,
242 OUT EFI_MEMORY_DESCRIPTOR
*MemoryMap
,
244 OUT UINTN
*DescriptorSize
,
245 OUT UINT32
*DescriptorVersion
249 Allocates pool memory.
251 @param[in] PoolType The type of pool to allocate.
252 MemoryType values in the range 0x70000000..0x7FFFFFFF
253 are reserved for OEM use. MemoryType values in the range
254 0x80000000..0xFFFFFFFF are reserved for use by UEFI OS loaders
255 that are provided by operating system vendors.
256 @param[in] Size The number of bytes to allocate from the pool.
257 @param[out] Buffer A pointer to a pointer to the allocated buffer if the call succeeds;
260 @retval EFI_SUCCESS The requested number of bytes was allocated.
261 @retval EFI_OUT_OF_RESOURCES The pool requested could not be allocated.
262 @retval EFI_INVALID_PARAMETER Buffer is NULL.
263 PoolType is in the range EfiMaxMemoryType..0x6FFFFFFF.
264 PoolType is EfiPersistentMemory.
269 (EFIAPI
*EFI_ALLOCATE_POOL
)(
270 IN EFI_MEMORY_TYPE PoolType
,
276 Returns pool memory to the system.
278 @param[in] Buffer The pointer to the buffer to free.
280 @retval EFI_SUCCESS The memory was returned to the system.
281 @retval EFI_INVALID_PARAMETER Buffer was invalid.
286 (EFIAPI
*EFI_FREE_POOL
)(
291 Changes the runtime addressing mode of EFI firmware from physical to virtual.
293 @param[in] MemoryMapSize The size in bytes of VirtualMap.
294 @param[in] DescriptorSize The size in bytes of an entry in the VirtualMap.
295 @param[in] DescriptorVersion The version of the structure entries in VirtualMap.
296 @param[in] VirtualMap An array of memory descriptors which contain new virtual
297 address mapping information for all runtime ranges.
299 @retval EFI_SUCCESS The virtual address map has been applied.
300 @retval EFI_UNSUPPORTED EFI firmware is not at runtime, or the EFI firmware is already in
301 virtual address mapped mode.
302 @retval EFI_INVALID_PARAMETER DescriptorSize or DescriptorVersion is invalid.
303 @retval EFI_NO_MAPPING A virtual address was not supplied for a range in the memory
304 map that requires a mapping.
305 @retval EFI_NOT_FOUND A virtual address was supplied for an address that is not found
311 (EFIAPI
*EFI_SET_VIRTUAL_ADDRESS_MAP
)(
312 IN UINTN MemoryMapSize
,
313 IN UINTN DescriptorSize
,
314 IN UINT32 DescriptorVersion
,
315 IN EFI_MEMORY_DESCRIPTOR
*VirtualMap
319 Connects one or more drivers to a controller.
321 @param[in] ControllerHandle The handle of the controller to which driver(s) are to be connected.
322 @param[in] DriverImageHandle A pointer to an ordered list handles that support the
323 EFI_DRIVER_BINDING_PROTOCOL.
324 @param[in] RemainingDevicePath A pointer to the device path that specifies a child of the
325 controller specified by ControllerHandle.
326 @param[in] Recursive If TRUE, then ConnectController() is called recursively
327 until the entire tree of controllers below the controller specified
328 by ControllerHandle have been created. If FALSE, then
329 the tree of controllers is only expanded one level.
331 @retval EFI_SUCCESS 1) One or more drivers were connected to ControllerHandle.
332 2) No drivers were connected to ControllerHandle, but
333 RemainingDevicePath is not NULL, and it is an End Device
335 @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
336 @retval EFI_NOT_FOUND 1) There are no EFI_DRIVER_BINDING_PROTOCOL instances
337 present in the system.
338 2) No drivers were connected to ControllerHandle.
339 @retval EFI_SECURITY_VIOLATION
340 The user has no permission to start UEFI device drivers on the device path
341 associated with the ControllerHandle or specified by the RemainingDevicePath.
345 (EFIAPI
*EFI_CONNECT_CONTROLLER
)(
346 IN EFI_HANDLE ControllerHandle
,
347 IN EFI_HANDLE
*DriverImageHandle
, OPTIONAL
348 IN EFI_DEVICE_PATH_PROTOCOL
*RemainingDevicePath
, OPTIONAL
353 Disconnects one or more drivers from a controller.
355 @param[in] ControllerHandle The handle of the controller from which driver(s) are to be disconnected.
356 @param[in] DriverImageHandle The driver to disconnect from ControllerHandle.
357 If DriverImageHandle is NULL, then all the drivers currently managing
358 ControllerHandle are disconnected from ControllerHandle.
359 @param[in] ChildHandle The handle of the child to destroy.
360 If ChildHandle is NULL, then all the children of ControllerHandle are
361 destroyed before the drivers are disconnected from ControllerHandle.
363 @retval EFI_SUCCESS 1) One or more drivers were disconnected from the controller.
364 2) On entry, no drivers are managing ControllerHandle.
365 3) DriverImageHandle is not NULL, and on entry
366 DriverImageHandle is not managing ControllerHandle.
367 @retval EFI_INVALID_PARAMETER 1) ControllerHandle is NULL.
368 2) DriverImageHandle is not NULL, and it is not a valid EFI_HANDLE.
369 3) ChildHandle is not NULL, and it is not a valid EFI_HANDLE.
370 4) DriverImageHandle does not support the EFI_DRIVER_BINDING_PROTOCOL.
371 @retval EFI_OUT_OF_RESOURCES There are not enough resources available to disconnect any drivers from
373 @retval EFI_DEVICE_ERROR The controller could not be disconnected because of a device error.
378 (EFIAPI
*EFI_DISCONNECT_CONTROLLER
)(
379 IN EFI_HANDLE ControllerHandle
,
380 IN EFI_HANDLE DriverImageHandle
, OPTIONAL
381 IN EFI_HANDLE ChildHandle OPTIONAL
387 // ConvertPointer DebugDisposition type.
389 #define EFI_OPTIONAL_PTR 0x00000001
392 Determines the new virtual address that is to be used on subsequent memory accesses.
394 @param[in] DebugDisposition Supplies type information for the pointer being converted.
395 @param[in, out] Address A pointer to a pointer that is to be fixed to be the value needed
396 for the new virtual address mappings being applied.
398 @retval EFI_SUCCESS The pointer pointed to by Address was modified.
399 @retval EFI_INVALID_PARAMETER 1) Address is NULL.
400 2) *Address is NULL and DebugDisposition does
401 not have the EFI_OPTIONAL_PTR bit set.
402 @retval EFI_NOT_FOUND The pointer pointed to by Address was not found to be part
403 of the current memory map. This is normally fatal.
408 (EFIAPI
*EFI_CONVERT_POINTER
)(
409 IN UINTN DebugDisposition
,
410 IN OUT VOID
**Address
415 // These types can be ORed together as needed - for example,
416 // EVT_TIMER might be Ored with EVT_NOTIFY_WAIT or
417 // EVT_NOTIFY_SIGNAL.
419 #define EVT_TIMER 0x80000000
420 #define EVT_RUNTIME 0x40000000
421 #define EVT_NOTIFY_WAIT 0x00000100
422 #define EVT_NOTIFY_SIGNAL 0x00000200
424 #define EVT_SIGNAL_EXIT_BOOT_SERVICES 0x00000201
425 #define EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE 0x60000202
428 // The event's NotifyContext pointer points to a runtime memory
430 // The event is deprecated in UEFI2.0 and later specifications.
432 #define EVT_RUNTIME_CONTEXT 0x20000000
436 Invoke a notification event
438 @param[in] Event Event whose notification function is being invoked.
439 @param[in] Context The pointer to the notification function's context,
440 which is implementation-dependent.
445 (EFIAPI
*EFI_EVENT_NOTIFY
)(
453 @param[in] Type The type of event to create and its mode and attributes.
454 @param[in] NotifyTpl The task priority level of event notifications, if needed.
455 @param[in] NotifyFunction The pointer to the event's notification function, if any.
456 @param[in] NotifyContext The pointer to the notification function's context; corresponds to parameter
457 Context in the notification function.
458 @param[out] Event The pointer to the newly created event if the call succeeds; undefined
461 @retval EFI_SUCCESS The event structure was created.
462 @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
463 @retval EFI_OUT_OF_RESOURCES The event could not be allocated.
468 (EFIAPI
*EFI_CREATE_EVENT
)(
470 IN EFI_TPL NotifyTpl
,
471 IN EFI_EVENT_NOTIFY NotifyFunction
,
472 IN VOID
*NotifyContext
,
477 Creates an event in a group.
479 @param[in] Type The type of event to create and its mode and attributes.
480 @param[in] NotifyTpl The task priority level of event notifications,if needed.
481 @param[in] NotifyFunction The pointer to the event's notification function, if any.
482 @param[in] NotifyContext The pointer to the notification function's context; corresponds to parameter
483 Context in the notification function.
484 @param[in] EventGroup The pointer to the unique identifier of the group to which this event belongs.
485 If this is NULL, then the function behaves as if the parameters were passed
487 @param[out] Event The pointer to the newly created event if the call succeeds; undefined
490 @retval EFI_SUCCESS The event structure was created.
491 @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
492 @retval EFI_OUT_OF_RESOURCES The event could not be allocated.
497 (EFIAPI
*EFI_CREATE_EVENT_EX
)(
499 IN EFI_TPL NotifyTpl
,
500 IN EFI_EVENT_NOTIFY NotifyFunction OPTIONAL
,
501 IN CONST VOID
*NotifyContext OPTIONAL
,
502 IN CONST EFI_GUID
*EventGroup OPTIONAL
,
507 /// Timer delay types
511 /// An event's timer settings is to be cancelled and not trigger time is to be set/
515 /// An event is to be signaled periodically at a specified interval from the current time.
519 /// An event is to be signaled once at a specified interval from the current time.
525 Sets the type of timer and the trigger time for a timer event.
527 @param[in] Event The timer event that is to be signaled at the specified time.
528 @param[in] Type The type of time that is specified in TriggerTime.
529 @param[in] TriggerTime The number of 100ns units until the timer expires.
530 A TriggerTime of 0 is legal.
531 If Type is TimerRelative and TriggerTime is 0, then the timer
532 event will be signaled on the next timer tick.
533 If Type is TimerPeriodic and TriggerTime is 0, then the timer
534 event will be signaled on every timer tick.
536 @retval EFI_SUCCESS The event has been set to be signaled at the requested time.
537 @retval EFI_INVALID_PARAMETER Event or Type is not valid.
542 (EFIAPI
*EFI_SET_TIMER
)(
544 IN EFI_TIMER_DELAY Type
,
545 IN UINT64 TriggerTime
551 @param[in] Event The event to signal.
553 @retval EFI_SUCCESS The event has been signaled.
558 (EFIAPI
*EFI_SIGNAL_EVENT
)(
563 Stops execution until an event is signaled.
565 @param[in] NumberOfEvents The number of events in the Event array.
566 @param[in] Event An array of EFI_EVENT.
567 @param[out] Index The pointer to the index of the event which satisfied the wait condition.
569 @retval EFI_SUCCESS The event indicated by Index was signaled.
570 @retval EFI_INVALID_PARAMETER 1) NumberOfEvents is 0.
571 2) The event indicated by Index is of type
573 @retval EFI_UNSUPPORTED The current TPL is not TPL_APPLICATION.
578 (EFIAPI
*EFI_WAIT_FOR_EVENT
)(
579 IN UINTN NumberOfEvents
,
587 @param[in] Event The event to close.
589 @retval EFI_SUCCESS The event has been closed.
594 (EFIAPI
*EFI_CLOSE_EVENT
)(
599 Checks whether an event is in the signaled state.
601 @param[in] Event The event to check.
603 @retval EFI_SUCCESS The event is in the signaled state.
604 @retval EFI_NOT_READY The event is not in the signaled state.
605 @retval EFI_INVALID_PARAMETER Event is of type EVT_NOTIFY_SIGNAL.
610 (EFIAPI
*EFI_CHECK_EVENT
)(
616 // Task priority level
618 #define TPL_APPLICATION 4
619 #define TPL_CALLBACK 8
620 #define TPL_NOTIFY 16
621 #define TPL_HIGH_LEVEL 31
625 Raises a task's priority level and returns its previous level.
627 @param[in] NewTpl The new task priority level.
629 @return Previous task priority level
634 (EFIAPI
*EFI_RAISE_TPL
)(
639 Restores a task's priority level to its previous value.
641 @param[in] OldTpl The previous task priority level to restore.
646 (EFIAPI
*EFI_RESTORE_TPL
)(
651 Returns the value of a variable.
653 @param[in] VariableName A Null-terminated string that is the name of the vendor's
655 @param[in] VendorGuid A unique identifier for the vendor.
656 @param[out] Attributes If not NULL, a pointer to the memory location to return the
657 attributes bitmask for the variable.
658 @param[in, out] DataSize On input, the size in bytes of the return Data buffer.
659 On output the size of data returned in Data.
660 @param[out] Data The buffer to return the contents of the variable. May be NULL
661 with a zero DataSize in order to determine the size buffer needed.
663 @retval EFI_SUCCESS The function completed successfully.
664 @retval EFI_NOT_FOUND The variable was not found.
665 @retval EFI_BUFFER_TOO_SMALL The DataSize is too small for the result.
666 @retval EFI_INVALID_PARAMETER VariableName is NULL.
667 @retval EFI_INVALID_PARAMETER VendorGuid is NULL.
668 @retval EFI_INVALID_PARAMETER DataSize is NULL.
669 @retval EFI_INVALID_PARAMETER The DataSize is not too small and Data is NULL.
670 @retval EFI_DEVICE_ERROR The variable could not be retrieved due to a hardware error.
671 @retval EFI_SECURITY_VIOLATION The variable could not be retrieved due to an authentication failure.
676 (EFIAPI
*EFI_GET_VARIABLE
)(
677 IN CHAR16
*VariableName
,
678 IN EFI_GUID
*VendorGuid
,
679 OUT UINT32
*Attributes
, OPTIONAL
680 IN OUT UINTN
*DataSize
,
681 OUT VOID
*Data OPTIONAL
685 Enumerates the current variable names.
687 @param[in, out] VariableNameSize The size of the VariableName buffer. The size must be large
688 enough to fit input string supplied in VariableName buffer.
689 @param[in, out] VariableName On input, supplies the last VariableName that was returned
690 by GetNextVariableName(). On output, returns the Nullterminated
691 string of the current variable.
692 @param[in, out] VendorGuid On input, supplies the last VendorGuid that was returned by
693 GetNextVariableName(). On output, returns the
694 VendorGuid of the current variable.
696 @retval EFI_SUCCESS The function completed successfully.
697 @retval EFI_NOT_FOUND The next variable was not found.
698 @retval EFI_BUFFER_TOO_SMALL The VariableNameSize is too small for the result.
699 VariableNameSize has been updated with the size needed to complete the request.
700 @retval EFI_INVALID_PARAMETER VariableNameSize is NULL.
701 @retval EFI_INVALID_PARAMETER VariableName is NULL.
702 @retval EFI_INVALID_PARAMETER VendorGuid is NULL.
703 @retval EFI_INVALID_PARAMETER The input values of VariableName and VendorGuid are not a name and
704 GUID of an existing variable.
705 @retval EFI_INVALID_PARAMETER Null-terminator is not found in the first VariableNameSize bytes of
706 the input VariableName buffer.
707 @retval EFI_DEVICE_ERROR The variable could not be retrieved due to a hardware error.
712 (EFIAPI
*EFI_GET_NEXT_VARIABLE_NAME
)(
713 IN OUT UINTN
*VariableNameSize
,
714 IN OUT CHAR16
*VariableName
,
715 IN OUT EFI_GUID
*VendorGuid
719 Sets the value of a variable.
721 @param[in] VariableName A Null-terminated string that is the name of the vendor's variable.
722 Each VariableName is unique for each VendorGuid. VariableName must
723 contain 1 or more characters. If VariableName is an empty string,
724 then EFI_INVALID_PARAMETER is returned.
725 @param[in] VendorGuid A unique identifier for the vendor.
726 @param[in] Attributes Attributes bitmask to set for the variable.
727 @param[in] DataSize The size in bytes of the Data buffer. Unless the EFI_VARIABLE_APPEND_WRITE or
728 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS attribute is set, a size of zero
729 causes the variable to be deleted. When the EFI_VARIABLE_APPEND_WRITE attribute is
730 set, then a SetVariable() call with a DataSize of zero will not cause any change to
731 the variable value (the timestamp associated with the variable may be updated however
732 even if no new data value is provided,see the description of the
733 EFI_VARIABLE_AUTHENTICATION_2 descriptor below. In this case the DataSize will not
734 be zero since the EFI_VARIABLE_AUTHENTICATION_2 descriptor will be populated).
735 @param[in] Data The contents for the variable.
737 @retval EFI_SUCCESS The firmware has successfully stored the variable and its data as
738 defined by the Attributes.
739 @retval EFI_INVALID_PARAMETER An invalid combination of attribute bits, name, and GUID was supplied, or the
740 DataSize exceeds the maximum allowed.
741 @retval EFI_INVALID_PARAMETER VariableName is an empty string.
742 @retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the variable and its data.
743 @retval EFI_DEVICE_ERROR The variable could not be retrieved due to a hardware error.
744 @retval EFI_WRITE_PROTECTED The variable in question is read-only.
745 @retval EFI_WRITE_PROTECTED The variable in question cannot be deleted.
746 @retval EFI_SECURITY_VIOLATION The variable could not be written due to EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACESS being set,
747 but the AuthInfo does NOT pass the validation check carried out by the firmware.
749 @retval EFI_NOT_FOUND The variable trying to be updated or deleted was not found.
754 (EFIAPI
*EFI_SET_VARIABLE
)(
755 IN CHAR16
*VariableName
,
756 IN EFI_GUID
*VendorGuid
,
757 IN UINT32 Attributes
,
764 /// This provides the capabilities of the
765 /// real time clock device as exposed through the EFI interfaces.
769 /// Provides the reporting resolution of the real-time clock device in
770 /// counts per second. For a normal PC-AT CMOS RTC device, this
771 /// value would be 1 Hz, or 1, to indicate that the device only reports
772 /// the time to the resolution of 1 second.
776 /// Provides the timekeeping accuracy of the real-time clock in an
777 /// error rate of 1E-6 parts per million. For a clock with an accuracy
778 /// of 50 parts per million, the value in this field would be
783 /// A TRUE indicates that a time set operation clears the device's
784 /// time below the Resolution reporting level. A FALSE
785 /// indicates that the state below the Resolution level of the
786 /// device is not cleared when the time is set. Normal PC-AT CMOS
787 /// RTC devices set this value to FALSE.
790 } EFI_TIME_CAPABILITIES
;
793 Returns the current time and date information, and the time-keeping capabilities
794 of the hardware platform.
796 @param[out] Time A pointer to storage to receive a snapshot of the current time.
797 @param[out] Capabilities An optional pointer to a buffer to receive the real time clock
798 device's capabilities.
800 @retval EFI_SUCCESS The operation completed successfully.
801 @retval EFI_INVALID_PARAMETER Time is NULL.
802 @retval EFI_DEVICE_ERROR The time could not be retrieved due to hardware error.
807 (EFIAPI
*EFI_GET_TIME
)(
809 OUT EFI_TIME_CAPABILITIES
*Capabilities OPTIONAL
813 Sets the current local time and date information.
815 @param[in] Time A pointer to the current time.
817 @retval EFI_SUCCESS The operation completed successfully.
818 @retval EFI_INVALID_PARAMETER A time field is out of range.
819 @retval EFI_DEVICE_ERROR The time could not be set due due to hardware error.
824 (EFIAPI
*EFI_SET_TIME
)(
829 Returns the current wakeup alarm clock setting.
831 @param[out] Enabled Indicates if the alarm is currently enabled or disabled.
832 @param[out] Pending Indicates if the alarm signal is pending and requires acknowledgement.
833 @param[out] Time The current alarm setting.
835 @retval EFI_SUCCESS The alarm settings were returned.
836 @retval EFI_INVALID_PARAMETER Enabled is NULL.
837 @retval EFI_INVALID_PARAMETER Pending is NULL.
838 @retval EFI_INVALID_PARAMETER Time is NULL.
839 @retval EFI_DEVICE_ERROR The wakeup time could not be retrieved due to a hardware error.
840 @retval EFI_UNSUPPORTED A wakeup timer is not supported on this platform.
845 (EFIAPI
*EFI_GET_WAKEUP_TIME
)(
846 OUT BOOLEAN
*Enabled
,
847 OUT BOOLEAN
*Pending
,
852 Sets the system wakeup alarm clock time.
854 @param[in] Enable Enable or disable the wakeup alarm.
855 @param[in] Time If Enable is TRUE, the time to set the wakeup alarm for.
856 If Enable is FALSE, then this parameter is optional, and may be NULL.
858 @retval EFI_SUCCESS If Enable is TRUE, then the wakeup alarm was enabled. If
859 Enable is FALSE, then the wakeup alarm was disabled.
860 @retval EFI_INVALID_PARAMETER A time field is out of range.
861 @retval EFI_DEVICE_ERROR The wakeup time could not be set due to a hardware error.
862 @retval EFI_UNSUPPORTED A wakeup timer is not supported on this platform.
867 (EFIAPI
*EFI_SET_WAKEUP_TIME
)(
869 IN EFI_TIME
*Time OPTIONAL
873 Loads an EFI image into memory.
875 @param[in] BootPolicy If TRUE, indicates that the request originates from the boot
876 manager, and that the boot manager is attempting to load
877 FilePath as a boot selection. Ignored if SourceBuffer is
879 @param[in] ParentImageHandle The caller's image handle.
880 @param[in] DevicePath The DeviceHandle specific file path from which the image is
882 @param[in] SourceBuffer If not NULL, a pointer to the memory location containing a copy
883 of the image to be loaded.
884 @param[in] SourceSize The size in bytes of SourceBuffer. Ignored if SourceBuffer is NULL.
885 @param[out] ImageHandle The pointer to the returned image handle that is created when the
886 image is successfully loaded.
888 @retval EFI_SUCCESS Image was loaded into memory correctly.
889 @retval EFI_NOT_FOUND Both SourceBuffer and DevicePath are NULL.
890 @retval EFI_INVALID_PARAMETER One or more parametes are invalid.
891 @retval EFI_UNSUPPORTED The image type is not supported.
892 @retval EFI_OUT_OF_RESOURCES Image was not loaded due to insufficient resources.
893 @retval EFI_LOAD_ERROR Image was not loaded because the image format was corrupt or not
895 @retval EFI_DEVICE_ERROR Image was not loaded because the device returned a read error.
896 @retval EFI_ACCESS_DENIED Image was not loaded because the platform policy prohibits the
897 image from being loaded. NULL is returned in *ImageHandle.
898 @retval EFI_SECURITY_VIOLATION Image was loaded and an ImageHandle was created with a
899 valid EFI_LOADED_IMAGE_PROTOCOL. However, the current
900 platform policy specifies that the image should not be started.
904 (EFIAPI
*EFI_IMAGE_LOAD
)(
905 IN BOOLEAN BootPolicy
,
906 IN EFI_HANDLE ParentImageHandle
,
907 IN EFI_DEVICE_PATH_PROTOCOL
*DevicePath
,
908 IN VOID
*SourceBuffer OPTIONAL
,
910 OUT EFI_HANDLE
*ImageHandle
914 Transfers control to a loaded image's entry point.
916 @param[in] ImageHandle Handle of image to be started.
917 @param[out] ExitDataSize The pointer to the size, in bytes, of ExitData.
918 @param[out] ExitData The pointer to a pointer to a data buffer that includes a Null-terminated
919 string, optionally followed by additional binary data.
921 @retval EFI_INVALID_PARAMETER ImageHandle is either an invalid image handle or the image
922 has already been initialized with StartImage.
923 @retval EFI_SECURITY_VIOLATION The current platform policy specifies that the image should not be started.
924 @return Exit code from image
929 (EFIAPI
*EFI_IMAGE_START
)(
930 IN EFI_HANDLE ImageHandle
,
931 OUT UINTN
*ExitDataSize
,
932 OUT CHAR16
**ExitData OPTIONAL
936 Terminates a loaded EFI image and returns control to boot services.
938 @param[in] ImageHandle Handle that identifies the image. This parameter is passed to the
940 @param[in] ExitStatus The image's exit code.
941 @param[in] ExitDataSize The size, in bytes, of ExitData. Ignored if ExitStatus is EFI_SUCCESS.
942 @param[in] ExitData The pointer to a data buffer that includes a Null-terminated string,
943 optionally followed by additional binary data. The string is a
944 description that the caller may use to further indicate the reason
945 for the image's exit. ExitData is only valid if ExitStatus
946 is something other than EFI_SUCCESS. The ExitData buffer
947 must be allocated by calling AllocatePool().
949 @retval EFI_SUCCESS The image specified by ImageHandle was unloaded.
950 @retval EFI_INVALID_PARAMETER The image specified by ImageHandle has been loaded and
951 started with LoadImage() and StartImage(), but the
952 image is not the currently executing image.
958 IN EFI_HANDLE ImageHandle
,
959 IN EFI_STATUS ExitStatus
,
960 IN UINTN ExitDataSize
,
961 IN CHAR16
*ExitData OPTIONAL
967 @param[in] ImageHandle Handle that identifies the image to be unloaded.
969 @retval EFI_SUCCESS The image has been unloaded.
970 @retval EFI_INVALID_PARAMETER ImageHandle is not a valid image handle.
975 (EFIAPI
*EFI_IMAGE_UNLOAD
)(
976 IN EFI_HANDLE ImageHandle
980 Terminates all boot services.
982 @param[in] ImageHandle Handle that identifies the exiting image.
983 @param[in] MapKey Key to the latest memory map.
985 @retval EFI_SUCCESS Boot services have been terminated.
986 @retval EFI_INVALID_PARAMETER MapKey is incorrect.
991 (EFIAPI
*EFI_EXIT_BOOT_SERVICES
)(
992 IN EFI_HANDLE ImageHandle
,
997 Induces a fine-grained stall.
999 @param[in] Microseconds The number of microseconds to stall execution.
1001 @retval EFI_SUCCESS Execution was stalled at least the requested number of
1007 (EFIAPI
*EFI_STALL
)(
1008 IN UINTN Microseconds
1012 Sets the system's watchdog timer.
1014 @param[in] Timeout The number of seconds to set the watchdog timer to.
1015 @param[in] WatchdogCode The numeric code to log on a watchdog timer timeout event.
1016 @param[in] DataSize The size, in bytes, of WatchdogData.
1017 @param[in] WatchdogData A data buffer that includes a Null-terminated string, optionally
1018 followed by additional binary data.
1020 @retval EFI_SUCCESS The timeout has been set.
1021 @retval EFI_INVALID_PARAMETER The supplied WatchdogCode is invalid.
1022 @retval EFI_UNSUPPORTED The system does not have a watchdog timer.
1023 @retval EFI_DEVICE_ERROR The watchdog timer could not be programmed due to a hardware
1029 (EFIAPI
*EFI_SET_WATCHDOG_TIMER
)(
1031 IN UINT64 WatchdogCode
,
1033 IN CHAR16
*WatchdogData OPTIONAL
1037 Resets the entire platform.
1039 @param[in] ResetType The type of reset to perform.
1040 @param[in] ResetStatus The status code for the reset.
1041 @param[in] DataSize The size, in bytes, of ResetData.
1042 @param[in] ResetData For a ResetType of EfiResetCold, EfiResetWarm, or
1043 EfiResetShutdown the data buffer starts with a Null-terminated
1044 string, optionally followed by additional binary data.
1045 The string is a description that the caller may use to further
1046 indicate the reason for the system reset.
1047 For a ResetType of EfiResetPlatformSpecific the data buffer
1048 also starts with a Null-terminated string that is followed
1049 by an EFI_GUID that describes the specific type of reset to perform.
1053 (EFIAPI
*EFI_RESET_SYSTEM
)(
1054 IN EFI_RESET_TYPE ResetType
,
1055 IN EFI_STATUS ResetStatus
,
1057 IN VOID
*ResetData OPTIONAL
1061 Returns a monotonically increasing count for the platform.
1063 @param[out] Count The pointer to returned value.
1065 @retval EFI_SUCCESS The next monotonic count was returned.
1066 @retval EFI_INVALID_PARAMETER Count is NULL.
1067 @retval EFI_DEVICE_ERROR The device is not functioning properly.
1072 (EFIAPI
*EFI_GET_NEXT_MONOTONIC_COUNT
)(
1077 Returns the next high 32 bits of the platform's monotonic counter.
1079 @param[out] HighCount The pointer to returned value.
1081 @retval EFI_SUCCESS The next high monotonic count was returned.
1082 @retval EFI_INVALID_PARAMETER HighCount is NULL.
1083 @retval EFI_DEVICE_ERROR The device is not functioning properly.
1088 (EFIAPI
*EFI_GET_NEXT_HIGH_MONO_COUNT
)(
1089 OUT UINT32
*HighCount
1093 Computes and returns a 32-bit CRC for a data buffer.
1095 @param[in] Data A pointer to the buffer on which the 32-bit CRC is to be computed.
1096 @param[in] DataSize The number of bytes in the buffer Data.
1097 @param[out] Crc32 The 32-bit CRC that was computed for the data buffer specified by Data
1100 @retval EFI_SUCCESS The 32-bit CRC was computed for the data buffer and returned in
1102 @retval EFI_INVALID_PARAMETER Data is NULL.
1103 @retval EFI_INVALID_PARAMETER Crc32 is NULL.
1104 @retval EFI_INVALID_PARAMETER DataSize is 0.
1109 (EFIAPI
*EFI_CALCULATE_CRC32
)(
1116 Copies the contents of one buffer to another buffer.
1118 @param[in] Destination The pointer to the destination buffer of the memory copy.
1119 @param[in] Source The pointer to the source buffer of the memory copy.
1120 @param[in] Length Number of bytes to copy from Source to Destination.
1125 (EFIAPI
*EFI_COPY_MEM
)(
1126 IN VOID
*Destination
,
1132 The SetMem() function fills a buffer with a specified value.
1134 @param[in] Buffer The pointer to the buffer to fill.
1135 @param[in] Size Number of bytes in Buffer to fill.
1136 @param[in] Value Value to fill Buffer with.
1141 (EFIAPI
*EFI_SET_MEM
)(
1148 /// Enumeration of EFI Interface Types
1152 /// Indicates that the supplied protocol interface is supplied in native form.
1154 EFI_NATIVE_INTERFACE
1155 } EFI_INTERFACE_TYPE
;
1158 Installs a protocol interface on a device handle. If the handle does not exist, it is created and added
1159 to the list of handles in the system. InstallMultipleProtocolInterfaces() performs
1160 more error checking than InstallProtocolInterface(), so it is recommended that
1161 InstallMultipleProtocolInterfaces() be used in place of
1162 InstallProtocolInterface()
1164 @param[in, out] Handle A pointer to the EFI_HANDLE on which the interface is to be installed.
1165 @param[in] Protocol The numeric ID of the protocol interface.
1166 @param[in] InterfaceType Indicates whether Interface is supplied in native form.
1167 @param[in] Interface A pointer to the protocol interface.
1169 @retval EFI_SUCCESS The protocol interface was installed.
1170 @retval EFI_OUT_OF_RESOURCES Space for a new handle could not be allocated.
1171 @retval EFI_INVALID_PARAMETER Handle is NULL.
1172 @retval EFI_INVALID_PARAMETER Protocol is NULL.
1173 @retval EFI_INVALID_PARAMETER InterfaceType is not EFI_NATIVE_INTERFACE.
1174 @retval EFI_INVALID_PARAMETER Protocol is already installed on the handle specified by Handle.
1179 (EFIAPI
*EFI_INSTALL_PROTOCOL_INTERFACE
)(
1180 IN OUT EFI_HANDLE
*Handle
,
1181 IN EFI_GUID
*Protocol
,
1182 IN EFI_INTERFACE_TYPE InterfaceType
,
1187 Installs one or more protocol interfaces into the boot services environment.
1189 @param[in, out] Handle The pointer to a handle to install the new protocol interfaces on,
1190 or a pointer to NULL if a new handle is to be allocated.
1191 @param ... A variable argument list containing pairs of protocol GUIDs and protocol
1194 @retval EFI_SUCCESS All the protocol interface was installed.
1195 @retval EFI_OUT_OF_RESOURCES There was not enough memory in pool to install all the protocols.
1196 @retval EFI_ALREADY_STARTED A Device Path Protocol instance was passed in that is already present in
1197 the handle database.
1198 @retval EFI_INVALID_PARAMETER Handle is NULL.
1199 @retval EFI_INVALID_PARAMETER Protocol is already installed on the handle specified by Handle.
1204 (EFIAPI
*EFI_INSTALL_MULTIPLE_PROTOCOL_INTERFACES
)(
1205 IN OUT EFI_HANDLE
*Handle
,
1210 Reinstalls a protocol interface on a device handle.
1212 @param[in] Handle Handle on which the interface is to be reinstalled.
1213 @param[in] Protocol The numeric ID of the interface.
1214 @param[in] OldInterface A pointer to the old interface. NULL can be used if a structure is not
1215 associated with Protocol.
1216 @param[in] NewInterface A pointer to the new interface.
1218 @retval EFI_SUCCESS The protocol interface was reinstalled.
1219 @retval EFI_NOT_FOUND The OldInterface on the handle was not found.
1220 @retval EFI_ACCESS_DENIED The protocol interface could not be reinstalled,
1221 because OldInterface is still being used by a
1222 driver that will not release it.
1223 @retval EFI_INVALID_PARAMETER Handle is NULL.
1224 @retval EFI_INVALID_PARAMETER Protocol is NULL.
1229 (EFIAPI
*EFI_REINSTALL_PROTOCOL_INTERFACE
)(
1230 IN EFI_HANDLE Handle
,
1231 IN EFI_GUID
*Protocol
,
1232 IN VOID
*OldInterface
,
1233 IN VOID
*NewInterface
1237 Removes a protocol interface from a device handle. It is recommended that
1238 UninstallMultipleProtocolInterfaces() be used in place of
1239 UninstallProtocolInterface().
1241 @param[in] Handle The handle on which the interface was installed.
1242 @param[in] Protocol The numeric ID of the interface.
1243 @param[in] Interface A pointer to the interface.
1245 @retval EFI_SUCCESS The interface was removed.
1246 @retval EFI_NOT_FOUND The interface was not found.
1247 @retval EFI_ACCESS_DENIED The interface was not removed because the interface
1248 is still being used by a driver.
1249 @retval EFI_INVALID_PARAMETER Handle is NULL.
1250 @retval EFI_INVALID_PARAMETER Protocol is NULL.
1255 (EFIAPI
*EFI_UNINSTALL_PROTOCOL_INTERFACE
)(
1256 IN EFI_HANDLE Handle
,
1257 IN EFI_GUID
*Protocol
,
1262 Removes one or more protocol interfaces into the boot services environment.
1264 @param[in] Handle The handle to remove the protocol interfaces from.
1265 @param ... A variable argument list containing pairs of protocol GUIDs and
1266 protocol interfaces.
1268 @retval EFI_SUCCESS All the protocol interfaces were removed.
1269 @retval EFI_INVALID_PARAMETER One of the protocol interfaces was not previously installed on Handle.
1274 (EFIAPI
*EFI_UNINSTALL_MULTIPLE_PROTOCOL_INTERFACES
)(
1275 IN EFI_HANDLE Handle
,
1280 Queries a handle to determine if it supports a specified protocol.
1282 @param[in] Handle The handle being queried.
1283 @param[in] Protocol The published unique identifier of the protocol.
1284 @param[out] Interface Supplies the address where a pointer to the corresponding Protocol
1285 Interface is returned.
1287 @retval EFI_SUCCESS The interface information for the specified protocol was returned.
1288 @retval EFI_UNSUPPORTED The device does not support the specified protocol.
1289 @retval EFI_INVALID_PARAMETER Handle is NULL.
1290 @retval EFI_INVALID_PARAMETER Protocol is NULL.
1291 @retval EFI_INVALID_PARAMETER Interface is NULL.
1296 (EFIAPI
*EFI_HANDLE_PROTOCOL
)(
1297 IN EFI_HANDLE Handle
,
1298 IN EFI_GUID
*Protocol
,
1299 OUT VOID
**Interface
1302 #define EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL 0x00000001
1303 #define EFI_OPEN_PROTOCOL_GET_PROTOCOL 0x00000002
1304 #define EFI_OPEN_PROTOCOL_TEST_PROTOCOL 0x00000004
1305 #define EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER 0x00000008
1306 #define EFI_OPEN_PROTOCOL_BY_DRIVER 0x00000010
1307 #define EFI_OPEN_PROTOCOL_EXCLUSIVE 0x00000020
1310 Queries a handle to determine if it supports a specified protocol. If the protocol is supported by the
1311 handle, it opens the protocol on behalf of the calling agent.
1313 @param[in] Handle The handle for the protocol interface that is being opened.
1314 @param[in] Protocol The published unique identifier of the protocol.
1315 @param[out] Interface Supplies the address where a pointer to the corresponding Protocol
1316 Interface is returned.
1317 @param[in] AgentHandle The handle of the agent that is opening the protocol interface
1318 specified by Protocol and Interface.
1319 @param[in] ControllerHandle If the agent that is opening a protocol is a driver that follows the
1320 UEFI Driver Model, then this parameter is the controller handle
1321 that requires the protocol interface. If the agent does not follow
1322 the UEFI Driver Model, then this parameter is optional and may
1324 @param[in] Attributes The open mode of the protocol interface specified by Handle
1327 @retval EFI_SUCCESS An item was added to the open list for the protocol interface, and the
1328 protocol interface was returned in Interface.
1329 @retval EFI_UNSUPPORTED Handle does not support Protocol.
1330 @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
1331 @retval EFI_ACCESS_DENIED Required attributes can't be supported in current environment.
1332 @retval EFI_ALREADY_STARTED Item on the open list already has requierd attributes whose agent
1333 handle is the same as AgentHandle.
1338 (EFIAPI
*EFI_OPEN_PROTOCOL
)(
1339 IN EFI_HANDLE Handle
,
1340 IN EFI_GUID
*Protocol
,
1341 OUT VOID
**Interface
, OPTIONAL
1342 IN EFI_HANDLE AgentHandle
,
1343 IN EFI_HANDLE ControllerHandle
,
1344 IN UINT32 Attributes
1349 Closes a protocol on a handle that was opened using OpenProtocol().
1351 @param[in] Handle The handle for the protocol interface that was previously opened
1352 with OpenProtocol(), and is now being closed.
1353 @param[in] Protocol The published unique identifier of the protocol.
1354 @param[in] AgentHandle The handle of the agent that is closing the protocol interface.
1355 @param[in] ControllerHandle If the agent that opened a protocol is a driver that follows the
1356 UEFI Driver Model, then this parameter is the controller handle
1357 that required the protocol interface.
1359 @retval EFI_SUCCESS The protocol instance was closed.
1360 @retval EFI_INVALID_PARAMETER 1) Handle is NULL.
1361 2) AgentHandle is NULL.
1362 3) ControllerHandle is not NULL and ControllerHandle is not a valid EFI_HANDLE.
1363 4) Protocol is NULL.
1364 @retval EFI_NOT_FOUND 1) Handle does not support the protocol specified by Protocol.
1365 2) The protocol interface specified by Handle and Protocol is not
1366 currently open by AgentHandle and ControllerHandle.
1371 (EFIAPI
*EFI_CLOSE_PROTOCOL
)(
1372 IN EFI_HANDLE Handle
,
1373 IN EFI_GUID
*Protocol
,
1374 IN EFI_HANDLE AgentHandle
,
1375 IN EFI_HANDLE ControllerHandle
1379 /// EFI Oprn Protocol Information Entry
1382 EFI_HANDLE AgentHandle
;
1383 EFI_HANDLE ControllerHandle
;
1386 } EFI_OPEN_PROTOCOL_INFORMATION_ENTRY
;
1389 Retrieves the list of agents that currently have a protocol interface opened.
1391 @param[in] Handle The handle for the protocol interface that is being queried.
1392 @param[in] Protocol The published unique identifier of the protocol.
1393 @param[out] EntryBuffer A pointer to a buffer of open protocol information in the form of
1394 EFI_OPEN_PROTOCOL_INFORMATION_ENTRY structures.
1395 @param[out] EntryCount A pointer to the number of entries in EntryBuffer.
1397 @retval EFI_SUCCESS The open protocol information was returned in EntryBuffer, and the
1398 number of entries was returned EntryCount.
1399 @retval EFI_OUT_OF_RESOURCES There are not enough resources available to allocate EntryBuffer.
1400 @retval EFI_NOT_FOUND Handle does not support the protocol specified by Protocol.
1405 (EFIAPI
*EFI_OPEN_PROTOCOL_INFORMATION
)(
1406 IN EFI_HANDLE Handle
,
1407 IN EFI_GUID
*Protocol
,
1408 OUT EFI_OPEN_PROTOCOL_INFORMATION_ENTRY
**EntryBuffer
,
1409 OUT UINTN
*EntryCount
1413 Retrieves the list of protocol interface GUIDs that are installed on a handle in a buffer allocated
1416 @param[in] Handle The handle from which to retrieve the list of protocol interface
1418 @param[out] ProtocolBuffer A pointer to the list of protocol interface GUID pointers that are
1419 installed on Handle.
1420 @param[out] ProtocolBufferCount A pointer to the number of GUID pointers present in
1423 @retval EFI_SUCCESS The list of protocol interface GUIDs installed on Handle was returned in
1424 ProtocolBuffer. The number of protocol interface GUIDs was
1425 returned in ProtocolBufferCount.
1426 @retval EFI_OUT_OF_RESOURCES There is not enough pool memory to store the results.
1427 @retval EFI_INVALID_PARAMETER Handle is NULL.
1428 @retval EFI_INVALID_PARAMETER Handle is not a valid EFI_HANDLE.
1429 @retval EFI_INVALID_PARAMETER ProtocolBuffer is NULL.
1430 @retval EFI_INVALID_PARAMETER ProtocolBufferCount is NULL.
1435 (EFIAPI
*EFI_PROTOCOLS_PER_HANDLE
)(
1436 IN EFI_HANDLE Handle
,
1437 OUT EFI_GUID
***ProtocolBuffer
,
1438 OUT UINTN
*ProtocolBufferCount
1442 Creates an event that is to be signaled whenever an interface is installed for a specified protocol.
1444 @param[in] Protocol The numeric ID of the protocol for which the event is to be registered.
1445 @param[in] Event Event that is to be signaled whenever a protocol interface is registered
1447 @param[out] Registration A pointer to a memory location to receive the registration value.
1449 @retval EFI_SUCCESS The notification event has been registered.
1450 @retval EFI_OUT_OF_RESOURCES Space for the notification event could not be allocated.
1451 @retval EFI_INVALID_PARAMETER Protocol is NULL.
1452 @retval EFI_INVALID_PARAMETER Event is NULL.
1453 @retval EFI_INVALID_PARAMETER Registration is NULL.
1458 (EFIAPI
*EFI_REGISTER_PROTOCOL_NOTIFY
)(
1459 IN EFI_GUID
*Protocol
,
1461 OUT VOID
**Registration
1465 /// Enumeration of EFI Locate Search Types
1469 /// Retrieve all the handles in the handle database.
1473 /// Retrieve the next handle fron a RegisterProtocolNotify() event.
1477 /// Retrieve the set of handles from the handle database that support a
1478 /// specified protocol.
1481 } EFI_LOCATE_SEARCH_TYPE
;
1484 Returns an array of handles that support a specified protocol.
1486 @param[in] SearchType Specifies which handle(s) are to be returned.
1487 @param[in] Protocol Specifies the protocol to search by.
1488 @param[in] SearchKey Specifies the search key.
1489 @param[in, out] BufferSize On input, the size in bytes of Buffer. On output, the size in bytes of
1490 the array returned in Buffer (if the buffer was large enough) or the
1491 size, in bytes, of the buffer needed to obtain the array (if the buffer was
1493 @param[out] Buffer The buffer in which the array is returned.
1495 @retval EFI_SUCCESS The array of handles was returned.
1496 @retval EFI_NOT_FOUND No handles match the search.
1497 @retval EFI_BUFFER_TOO_SMALL The BufferSize is too small for the result.
1498 @retval EFI_INVALID_PARAMETER SearchType is not a member of EFI_LOCATE_SEARCH_TYPE.
1499 @retval EFI_INVALID_PARAMETER SearchType is ByRegisterNotify and SearchKey is NULL.
1500 @retval EFI_INVALID_PARAMETER SearchType is ByProtocol and Protocol is NULL.
1501 @retval EFI_INVALID_PARAMETER One or more matches are found and BufferSize is NULL.
1502 @retval EFI_INVALID_PARAMETER BufferSize is large enough for the result and Buffer is NULL.
1507 (EFIAPI
*EFI_LOCATE_HANDLE
)(
1508 IN EFI_LOCATE_SEARCH_TYPE SearchType
,
1509 IN EFI_GUID
*Protocol
, OPTIONAL
1510 IN VOID
*SearchKey
, OPTIONAL
1511 IN OUT UINTN
*BufferSize
,
1512 OUT EFI_HANDLE
*Buffer
1516 Locates the handle to a device on the device path that supports the specified protocol.
1518 @param[in] Protocol Specifies the protocol to search for.
1519 @param[in, out] DevicePath On input, a pointer to a pointer to the device path. On output, the device
1520 path pointer is modified to point to the remaining part of the device
1522 @param[out] Device A pointer to the returned device handle.
1524 @retval EFI_SUCCESS The resulting handle was returned.
1525 @retval EFI_NOT_FOUND No handles match the search.
1526 @retval EFI_INVALID_PARAMETER Protocol is NULL.
1527 @retval EFI_INVALID_PARAMETER DevicePath is NULL.
1528 @retval EFI_INVALID_PARAMETER A handle matched the search and Device is NULL.
1533 (EFIAPI
*EFI_LOCATE_DEVICE_PATH
)(
1534 IN EFI_GUID
*Protocol
,
1535 IN OUT EFI_DEVICE_PATH_PROTOCOL
**DevicePath
,
1536 OUT EFI_HANDLE
*Device
1540 Adds, updates, or removes a configuration table entry from the EFI System Table.
1542 @param[in] Guid A pointer to the GUID for the entry to add, update, or remove.
1543 @param[in] Table A pointer to the configuration table for the entry to add, update, or
1544 remove. May be NULL.
1546 @retval EFI_SUCCESS The (Guid, Table) pair was added, updated, or removed.
1547 @retval EFI_NOT_FOUND An attempt was made to delete a nonexistent entry.
1548 @retval EFI_INVALID_PARAMETER Guid is NULL.
1549 @retval EFI_OUT_OF_RESOURCES There is not enough memory available to complete the operation.
1554 (EFIAPI
*EFI_INSTALL_CONFIGURATION_TABLE
)(
1560 Returns an array of handles that support the requested protocol in a buffer allocated from pool.
1562 @param[in] SearchType Specifies which handle(s) are to be returned.
1563 @param[in] Protocol Provides the protocol to search by.
1564 This parameter is only valid for a SearchType of ByProtocol.
1565 @param[in] SearchKey Supplies the search key depending on the SearchType.
1566 @param[out] NoHandles The number of handles returned in Buffer.
1567 @param[out] Buffer A pointer to the buffer to return the requested array of handles that
1570 @retval EFI_SUCCESS The array of handles was returned in Buffer, and the number of
1571 handles in Buffer was returned in NoHandles.
1572 @retval EFI_NOT_FOUND No handles match the search.
1573 @retval EFI_OUT_OF_RESOURCES There is not enough pool memory to store the matching results.
1574 @retval EFI_INVALID_PARAMETER NoHandles is NULL.
1575 @retval EFI_INVALID_PARAMETER Buffer is NULL.
1580 (EFIAPI
*EFI_LOCATE_HANDLE_BUFFER
)(
1581 IN EFI_LOCATE_SEARCH_TYPE SearchType
,
1582 IN EFI_GUID
*Protocol
, OPTIONAL
1583 IN VOID
*SearchKey
, OPTIONAL
1584 OUT UINTN
*NoHandles
,
1585 OUT EFI_HANDLE
**Buffer
1589 Returns the first protocol instance that matches the given protocol.
1591 @param[in] Protocol Provides the protocol to search for.
1592 @param[in] Registration Optional registration key returned from
1593 RegisterProtocolNotify().
1594 @param[out] Interface On return, a pointer to the first interface that matches Protocol and
1597 @retval EFI_SUCCESS A protocol instance matching Protocol was found and returned in
1599 @retval EFI_NOT_FOUND No protocol instances were found that match Protocol and
1601 @retval EFI_INVALID_PARAMETER Interface is NULL.
1607 (EFIAPI
*EFI_LOCATE_PROTOCOL
)(
1608 IN EFI_GUID
*Protocol
,
1609 IN VOID
*Registration
, OPTIONAL
1610 OUT VOID
**Interface
1614 /// EFI Capsule Block Descriptor
1618 /// Length in bytes of the data pointed to by DataBlock/ContinuationPointer.
1623 /// Physical address of the data block. This member of the union is
1624 /// used if Length is not equal to zero.
1626 EFI_PHYSICAL_ADDRESS DataBlock
;
1628 /// Physical address of another block of
1629 /// EFI_CAPSULE_BLOCK_DESCRIPTOR structures. This
1630 /// member of the union is used if Length is equal to zero. If
1631 /// ContinuationPointer is zero this entry represents the end of the list.
1633 EFI_PHYSICAL_ADDRESS ContinuationPointer
;
1635 } EFI_CAPSULE_BLOCK_DESCRIPTOR
;
1638 /// EFI Capsule Header.
1642 /// A GUID that defines the contents of a capsule.
1644 EFI_GUID CapsuleGuid
;
1646 /// The size of the capsule header. This may be larger than the size of
1647 /// the EFI_CAPSULE_HEADER since CapsuleGuid may imply
1648 /// extended header entries
1652 /// Bit-mapped list describing the capsule attributes. The Flag values
1653 /// of 0x0000 - 0xFFFF are defined by CapsuleGuid. Flag values
1654 /// of 0x10000 - 0xFFFFFFFF are defined by this specification
1658 /// Size in bytes of the capsule.
1660 UINT32 CapsuleImageSize
;
1661 } EFI_CAPSULE_HEADER
;
1664 /// The EFI System Table entry must point to an array of capsules
1665 /// that contain the same CapsuleGuid value. The array must be
1666 /// prefixed by a UINT32 that represents the size of the array of capsules.
1670 /// the size of the array of capsules.
1672 UINT32 CapsuleArrayNumber
;
1674 /// Point to an array of capsules that contain the same CapsuleGuid value.
1676 VOID
* CapsulePtr
[1];
1677 } EFI_CAPSULE_TABLE
;
1679 #define CAPSULE_FLAGS_PERSIST_ACROSS_RESET 0x00010000
1680 #define CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE 0x00020000
1681 #define CAPSULE_FLAGS_INITIATE_RESET 0x00040000
1684 Passes capsules to the firmware with both virtual and physical mapping. Depending on the intended
1685 consumption, the firmware may process the capsule immediately. If the payload should persist
1686 across a system reset, the reset value returned from EFI_QueryCapsuleCapabilities must
1687 be passed into ResetSystem() and will cause the capsule to be processed by the firmware as
1688 part of the reset process.
1690 @param[in] CapsuleHeaderArray Virtual pointer to an array of virtual pointers to the capsules
1691 being passed into update capsule.
1692 @param[in] CapsuleCount Number of pointers to EFI_CAPSULE_HEADER in
1694 @param[in] ScatterGatherList Physical pointer to a set of
1695 EFI_CAPSULE_BLOCK_DESCRIPTOR that describes the
1696 location in physical memory of a set of capsules.
1698 @retval EFI_SUCCESS Valid capsule was passed. If
1699 CAPSULE_FLAGS_PERSIT_ACROSS_RESET is not set, the
1700 capsule has been successfully processed by the firmware.
1701 @retval EFI_INVALID_PARAMETER CapsuleSize is NULL, or an incompatible set of flags were
1702 set in the capsule header.
1703 @retval EFI_INVALID_PARAMETER CapsuleCount is 0.
1704 @retval EFI_DEVICE_ERROR The capsule update was started, but failed due to a device error.
1705 @retval EFI_UNSUPPORTED The capsule type is not supported on this platform.
1706 @retval EFI_OUT_OF_RESOURCES When ExitBootServices() has been previously called this error indicates the capsule
1707 is compatible with this platform but is not capable of being submitted or processed
1708 in runtime. The caller may resubmit the capsule prior to ExitBootServices().
1709 @retval EFI_OUT_OF_RESOURCES When ExitBootServices() has not been previously called then this error indicates
1710 the capsule is compatible with this platform but there are insufficient resources to process.
1715 (EFIAPI
*EFI_UPDATE_CAPSULE
)(
1716 IN EFI_CAPSULE_HEADER
**CapsuleHeaderArray
,
1717 IN UINTN CapsuleCount
,
1718 IN EFI_PHYSICAL_ADDRESS ScatterGatherList OPTIONAL
1722 Returns if the capsule can be supported via UpdateCapsule().
1724 @param[in] CapsuleHeaderArray Virtual pointer to an array of virtual pointers to the capsules
1725 being passed into update capsule.
1726 @param[in] CapsuleCount Number of pointers to EFI_CAPSULE_HEADER in
1728 @param[out] MaxiumCapsuleSize On output the maximum size that UpdateCapsule() can
1729 support as an argument to UpdateCapsule() via
1730 CapsuleHeaderArray and ScatterGatherList.
1731 @param[out] ResetType Returns the type of reset required for the capsule update.
1733 @retval EFI_SUCCESS Valid answer returned.
1734 @retval EFI_UNSUPPORTED The capsule type is not supported on this platform, and
1735 MaximumCapsuleSize and ResetType are undefined.
1736 @retval EFI_INVALID_PARAMETER MaximumCapsuleSize is NULL.
1737 @retval EFI_OUT_OF_RESOURCES When ExitBootServices() has been previously called this error indicates the capsule
1738 is compatible with this platform but is not capable of being submitted or processed
1739 in runtime. The caller may resubmit the capsule prior to ExitBootServices().
1740 @retval EFI_OUT_OF_RESOURCES When ExitBootServices() has not been previously called then this error indicates
1741 the capsule is compatible with this platform but there are insufficient resources to process.
1746 (EFIAPI
*EFI_QUERY_CAPSULE_CAPABILITIES
)(
1747 IN EFI_CAPSULE_HEADER
**CapsuleHeaderArray
,
1748 IN UINTN CapsuleCount
,
1749 OUT UINT64
*MaximumCapsuleSize
,
1750 OUT EFI_RESET_TYPE
*ResetType
1754 Returns information about the EFI variables.
1756 @param[in] Attributes Attributes bitmask to specify the type of variables on
1757 which to return information.
1758 @param[out] MaximumVariableStorageSize On output the maximum size of the storage space
1759 available for the EFI variables associated with the
1760 attributes specified.
1761 @param[out] RemainingVariableStorageSize Returns the remaining size of the storage space
1762 available for the EFI variables associated with the
1763 attributes specified.
1764 @param[out] MaximumVariableSize Returns the maximum size of the individual EFI
1765 variables associated with the attributes specified.
1767 @retval EFI_SUCCESS Valid answer returned.
1768 @retval EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied
1769 @retval EFI_UNSUPPORTED The attribute is not supported on this platform, and the
1770 MaximumVariableStorageSize,
1771 RemainingVariableStorageSize, MaximumVariableSize
1777 (EFIAPI
*EFI_QUERY_VARIABLE_INFO
)(
1778 IN UINT32 Attributes
,
1779 OUT UINT64
*MaximumVariableStorageSize
,
1780 OUT UINT64
*RemainingVariableStorageSize
,
1781 OUT UINT64
*MaximumVariableSize
1785 // Firmware should stop at a firmware user interface on next boot
1787 #define EFI_OS_INDICATIONS_BOOT_TO_FW_UI 0x0000000000000001
1788 #define EFI_OS_INDICATIONS_TIMESTAMP_REVOCATION 0x0000000000000002
1789 #define EFI_OS_INDICATIONS_FILE_CAPSULE_DELIVERY_SUPPORTED 0x0000000000000004
1790 #define EFI_OS_INDICATIONS_FMP_CAPSULE_SUPPORTED 0x0000000000000008
1791 #define EFI_OS_INDICATIONS_CAPSULE_RESULT_VAR_SUPPORTED 0x0000000000000010
1792 #define EFI_OS_INDICATIONS_START_PLATFORM_RECOVERY 0x0000000000000040
1793 #define EFI_OS_INDICATIONS_JSON_CONFIG_DATA_REFRESH 0x0000000000000080
1796 // EFI Runtime Services Table
1798 #define EFI_SYSTEM_TABLE_SIGNATURE SIGNATURE_64 ('I','B','I',' ','S','Y','S','T')
1799 #define EFI_2_80_SYSTEM_TABLE_REVISION ((2 << 16) | (80))
1800 #define EFI_2_70_SYSTEM_TABLE_REVISION ((2 << 16) | (70))
1801 #define EFI_2_60_SYSTEM_TABLE_REVISION ((2 << 16) | (60))
1802 #define EFI_2_50_SYSTEM_TABLE_REVISION ((2 << 16) | (50))
1803 #define EFI_2_40_SYSTEM_TABLE_REVISION ((2 << 16) | (40))
1804 #define EFI_2_31_SYSTEM_TABLE_REVISION ((2 << 16) | (31))
1805 #define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30))
1806 #define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20))
1807 #define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10))
1808 #define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00))
1809 #define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10))
1810 #define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02))
1811 #define EFI_SYSTEM_TABLE_REVISION EFI_2_70_SYSTEM_TABLE_REVISION
1812 #define EFI_SPECIFICATION_VERSION EFI_SYSTEM_TABLE_REVISION
1814 #define EFI_RUNTIME_SERVICES_SIGNATURE SIGNATURE_64 ('R','U','N','T','S','E','R','V')
1815 #define EFI_RUNTIME_SERVICES_REVISION EFI_SPECIFICATION_VERSION
1818 /// EFI Runtime Services Table.
1822 /// The table header for the EFI Runtime Services Table.
1824 EFI_TABLE_HEADER Hdr
;
1829 EFI_GET_TIME GetTime
;
1830 EFI_SET_TIME SetTime
;
1831 EFI_GET_WAKEUP_TIME GetWakeupTime
;
1832 EFI_SET_WAKEUP_TIME SetWakeupTime
;
1835 // Virtual Memory Services
1837 EFI_SET_VIRTUAL_ADDRESS_MAP SetVirtualAddressMap
;
1838 EFI_CONVERT_POINTER ConvertPointer
;
1841 // Variable Services
1843 EFI_GET_VARIABLE GetVariable
;
1844 EFI_GET_NEXT_VARIABLE_NAME GetNextVariableName
;
1845 EFI_SET_VARIABLE SetVariable
;
1848 // Miscellaneous Services
1850 EFI_GET_NEXT_HIGH_MONO_COUNT GetNextHighMonotonicCount
;
1851 EFI_RESET_SYSTEM ResetSystem
;
1854 // UEFI 2.0 Capsule Services
1856 EFI_UPDATE_CAPSULE UpdateCapsule
;
1857 EFI_QUERY_CAPSULE_CAPABILITIES QueryCapsuleCapabilities
;
1860 // Miscellaneous UEFI 2.0 Service
1862 EFI_QUERY_VARIABLE_INFO QueryVariableInfo
;
1863 } EFI_RUNTIME_SERVICES
;
1866 #define EFI_BOOT_SERVICES_SIGNATURE SIGNATURE_64 ('B','O','O','T','S','E','R','V')
1867 #define EFI_BOOT_SERVICES_REVISION EFI_SPECIFICATION_VERSION
1870 /// EFI Boot Services Table.
1874 /// The table header for the EFI Boot Services Table.
1876 EFI_TABLE_HEADER Hdr
;
1879 // Task Priority Services
1881 EFI_RAISE_TPL RaiseTPL
;
1882 EFI_RESTORE_TPL RestoreTPL
;
1887 EFI_ALLOCATE_PAGES AllocatePages
;
1888 EFI_FREE_PAGES FreePages
;
1889 EFI_GET_MEMORY_MAP GetMemoryMap
;
1890 EFI_ALLOCATE_POOL AllocatePool
;
1891 EFI_FREE_POOL FreePool
;
1894 // Event & Timer Services
1896 EFI_CREATE_EVENT CreateEvent
;
1897 EFI_SET_TIMER SetTimer
;
1898 EFI_WAIT_FOR_EVENT WaitForEvent
;
1899 EFI_SIGNAL_EVENT SignalEvent
;
1900 EFI_CLOSE_EVENT CloseEvent
;
1901 EFI_CHECK_EVENT CheckEvent
;
1904 // Protocol Handler Services
1906 EFI_INSTALL_PROTOCOL_INTERFACE InstallProtocolInterface
;
1907 EFI_REINSTALL_PROTOCOL_INTERFACE ReinstallProtocolInterface
;
1908 EFI_UNINSTALL_PROTOCOL_INTERFACE UninstallProtocolInterface
;
1909 EFI_HANDLE_PROTOCOL HandleProtocol
;
1911 EFI_REGISTER_PROTOCOL_NOTIFY RegisterProtocolNotify
;
1912 EFI_LOCATE_HANDLE LocateHandle
;
1913 EFI_LOCATE_DEVICE_PATH LocateDevicePath
;
1914 EFI_INSTALL_CONFIGURATION_TABLE InstallConfigurationTable
;
1919 EFI_IMAGE_LOAD LoadImage
;
1920 EFI_IMAGE_START StartImage
;
1922 EFI_IMAGE_UNLOAD UnloadImage
;
1923 EFI_EXIT_BOOT_SERVICES ExitBootServices
;
1926 // Miscellaneous Services
1928 EFI_GET_NEXT_MONOTONIC_COUNT GetNextMonotonicCount
;
1930 EFI_SET_WATCHDOG_TIMER SetWatchdogTimer
;
1933 // DriverSupport Services
1935 EFI_CONNECT_CONTROLLER ConnectController
;
1936 EFI_DISCONNECT_CONTROLLER DisconnectController
;
1939 // Open and Close Protocol Services
1941 EFI_OPEN_PROTOCOL OpenProtocol
;
1942 EFI_CLOSE_PROTOCOL CloseProtocol
;
1943 EFI_OPEN_PROTOCOL_INFORMATION OpenProtocolInformation
;
1948 EFI_PROTOCOLS_PER_HANDLE ProtocolsPerHandle
;
1949 EFI_LOCATE_HANDLE_BUFFER LocateHandleBuffer
;
1950 EFI_LOCATE_PROTOCOL LocateProtocol
;
1951 EFI_INSTALL_MULTIPLE_PROTOCOL_INTERFACES InstallMultipleProtocolInterfaces
;
1952 EFI_UNINSTALL_MULTIPLE_PROTOCOL_INTERFACES UninstallMultipleProtocolInterfaces
;
1955 // 32-bit CRC Services
1957 EFI_CALCULATE_CRC32 CalculateCrc32
;
1960 // Miscellaneous Services
1962 EFI_COPY_MEM CopyMem
;
1964 EFI_CREATE_EVENT_EX CreateEventEx
;
1965 } EFI_BOOT_SERVICES
;
1968 /// Contains a set of GUID/pointer pairs comprised of the ConfigurationTable field in the
1969 /// EFI System Table.
1973 /// The 128-bit GUID value that uniquely identifies the system configuration table.
1975 EFI_GUID VendorGuid
;
1977 /// A pointer to the table associated with VendorGuid.
1980 } EFI_CONFIGURATION_TABLE
;
1983 /// EFI System Table
1987 /// The table header for the EFI System Table.
1989 EFI_TABLE_HEADER Hdr
;
1991 /// A pointer to a null terminated string that identifies the vendor
1992 /// that produces the system firmware for the platform.
1994 CHAR16
*FirmwareVendor
;
1996 /// A firmware vendor specific value that identifies the revision
1997 /// of the system firmware for the platform.
1999 UINT32 FirmwareRevision
;
2001 /// The handle for the active console input device. This handle must support
2002 /// EFI_SIMPLE_TEXT_INPUT_PROTOCOL and EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL.
2004 EFI_HANDLE ConsoleInHandle
;
2006 /// A pointer to the EFI_SIMPLE_TEXT_INPUT_PROTOCOL interface that is
2007 /// associated with ConsoleInHandle.
2009 EFI_SIMPLE_TEXT_INPUT_PROTOCOL
*ConIn
;
2011 /// The handle for the active console output device.
2013 EFI_HANDLE ConsoleOutHandle
;
2015 /// A pointer to the EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL interface
2016 /// that is associated with ConsoleOutHandle.
2018 EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL
*ConOut
;
2020 /// The handle for the active standard error console device.
2021 /// This handle must support the EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.
2023 EFI_HANDLE StandardErrorHandle
;
2025 /// A pointer to the EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL interface
2026 /// that is associated with StandardErrorHandle.
2028 EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL
*StdErr
;
2030 /// A pointer to the EFI Runtime Services Table.
2032 EFI_RUNTIME_SERVICES
*RuntimeServices
;
2034 /// A pointer to the EFI Boot Services Table.
2036 EFI_BOOT_SERVICES
*BootServices
;
2038 /// The number of system configuration tables in the buffer ConfigurationTable.
2040 UINTN NumberOfTableEntries
;
2042 /// A pointer to the system configuration tables.
2043 /// The number of entries in the table is NumberOfTableEntries.
2045 EFI_CONFIGURATION_TABLE
*ConfigurationTable
;
2049 This is the declaration of an EFI image entry point. This entry point is
2050 the same for UEFI Applications, UEFI OS Loaders, and UEFI Drivers including
2051 both device drivers and bus drivers.
2053 @param[in] ImageHandle The firmware allocated handle for the UEFI image.
2054 @param[in] SystemTable A pointer to the EFI System Table.
2056 @retval EFI_SUCCESS The operation completed successfully.
2057 @retval Others An unexpected error occurred.
2061 (EFIAPI
*EFI_IMAGE_ENTRY_POINT
)(
2062 IN EFI_HANDLE ImageHandle
,
2063 IN EFI_SYSTEM_TABLE
*SystemTable
2067 // EFI Load Option. This data structure describes format of UEFI boot option variables.
2069 // NOTE: EFI Load Option is a byte packed buffer of variable length fields.
2070 // The first two fields have fixed length. They are declared as members of the
2071 // EFI_LOAD_OPTION structure. All the other fields are variable length fields.
2072 // They are listed in the comment block below for reference purposes.
2075 typedef struct _EFI_LOAD_OPTION
{
2077 /// The attributes for this load option entry. All unused bits must be zero
2078 /// and are reserved by the UEFI specification for future growth.
2082 /// Length in bytes of the FilePathList. OptionalData starts at offset
2083 /// sizeof(UINT32) + sizeof(UINT16) + StrSize(Description) + FilePathListLength
2084 /// of the EFI_LOAD_OPTION descriptor.
2086 UINT16 FilePathListLength
;
2088 /// The user readable description for the load option.
2089 /// This field ends with a Null character.
2091 // CHAR16 Description[];
2093 /// A packed array of UEFI device paths. The first element of the array is a
2094 /// device path that describes the device and location of the Image for this
2095 /// load option. The FilePathList[0] is specific to the device type. Other
2096 /// device paths may optionally exist in the FilePathList, but their usage is
2097 /// OSV specific. Each element in the array is variable length, and ends at
2098 /// the device path end structure. Because the size of Description is
2099 /// arbitrary, this data structure is not guaranteed to be aligned on a
2100 /// natural boundary. This data structure may have to be copied to an aligned
2101 /// natural boundary before it is used.
2103 // EFI_DEVICE_PATH_PROTOCOL FilePathList[];
2105 /// The remaining bytes in the load option descriptor are a binary data buffer
2106 /// that is passed to the loaded image. If the field is zero bytes long, a
2107 /// NULL pointer is passed to the loaded image. The number of bytes in
2108 /// OptionalData can be computed by subtracting the starting offset of
2109 /// OptionalData from total size in bytes of the EFI_LOAD_OPTION.
2111 // UINT8 OptionalData[];
2116 // EFI Load Options Attributes
2118 #define LOAD_OPTION_ACTIVE 0x00000001
2119 #define LOAD_OPTION_FORCE_RECONNECT 0x00000002
2120 #define LOAD_OPTION_HIDDEN 0x00000008
2121 #define LOAD_OPTION_CATEGORY 0x00001F00
2123 #define LOAD_OPTION_CATEGORY_BOOT 0x00000000
2124 #define LOAD_OPTION_CATEGORY_APP 0x00000100
2126 #define EFI_BOOT_OPTION_SUPPORT_KEY 0x00000001
2127 #define EFI_BOOT_OPTION_SUPPORT_APP 0x00000002
2128 #define EFI_BOOT_OPTION_SUPPORT_SYSPREP 0x00000010
2129 #define EFI_BOOT_OPTION_SUPPORT_COUNT 0x00000300
2132 /// EFI Boot Key Data
2137 /// Indicates the revision of the EFI_KEY_OPTION structure. This revision level should be 0.
2139 UINT32 Revision
: 8;
2141 /// Either the left or right Shift keys must be pressed (1) or must not be pressed (0).
2143 UINT32 ShiftPressed
: 1;
2145 /// Either the left or right Control keys must be pressed (1) or must not be pressed (0).
2147 UINT32 ControlPressed
: 1;
2149 /// Either the left or right Alt keys must be pressed (1) or must not be pressed (0).
2151 UINT32 AltPressed
: 1;
2153 /// Either the left or right Logo keys must be pressed (1) or must not be pressed (0).
2155 UINT32 LogoPressed
: 1;
2157 /// The Menu key must be pressed (1) or must not be pressed (0).
2159 UINT32 MenuPressed
: 1;
2161 /// The SysReq key must be pressed (1) or must not be pressed (0).
2163 UINT32 SysReqPressed
: 1;
2164 UINT32 Reserved
: 16;
2166 /// Specifies the actual number of entries in EFI_KEY_OPTION.Keys, from 0-3. If
2167 /// zero, then only the shift state is considered. If more than one, then the boot option will
2168 /// only be launched if all of the specified keys are pressed with the same shift state.
2170 UINT32 InputKeyCount
: 2;
2173 } EFI_BOOT_KEY_DATA
;
2181 /// Specifies options about how the key will be processed.
2183 EFI_BOOT_KEY_DATA KeyData
;
2185 /// The CRC-32 which should match the CRC-32 of the entire EFI_LOAD_OPTION to
2186 /// which BootOption refers. If the CRC-32s do not match this value, then this key
2187 /// option is ignored.
2189 UINT32 BootOptionCrc
;
2191 /// The Boot#### option which will be invoked if this key is pressed and the boot option
2192 /// is active (LOAD_OPTION_ACTIVE is set).
2196 /// The key codes to compare against those returned by the
2197 /// EFI_SIMPLE_TEXT_INPUT and EFI_SIMPLE_TEXT_INPUT_EX protocols.
2198 /// The number of key codes (0-3) is specified by the EFI_KEY_CODE_COUNT field in KeyOptions.
2200 //EFI_INPUT_KEY Keys[];
2205 // EFI File location to boot from on removable media devices
2207 #define EFI_REMOVABLE_MEDIA_FILE_NAME_IA32 L"\\EFI\\BOOT\\BOOTIA32.EFI"
2208 #define EFI_REMOVABLE_MEDIA_FILE_NAME_IA64 L"\\EFI\\BOOT\\BOOTIA64.EFI"
2209 #define EFI_REMOVABLE_MEDIA_FILE_NAME_X64 L"\\EFI\\BOOT\\BOOTX64.EFI"
2210 #define EFI_REMOVABLE_MEDIA_FILE_NAME_ARM L"\\EFI\\BOOT\\BOOTARM.EFI"
2211 #define EFI_REMOVABLE_MEDIA_FILE_NAME_AARCH64 L"\\EFI\\BOOT\\BOOTAA64.EFI"
2212 #define EFI_REMOVABLE_MEDIA_FILE_NAME_RISCV64 L"\\EFI\\BOOT\\BOOTRISCV64.EFI"
2214 #if !defined(EFI_REMOVABLE_MEDIA_FILE_NAME)
2215 #if defined (MDE_CPU_IA32)
2216 #define EFI_REMOVABLE_MEDIA_FILE_NAME EFI_REMOVABLE_MEDIA_FILE_NAME_IA32
2217 #elif defined (MDE_CPU_X64)
2218 #define EFI_REMOVABLE_MEDIA_FILE_NAME EFI_REMOVABLE_MEDIA_FILE_NAME_X64
2219 #elif defined (MDE_CPU_EBC)
2220 #elif defined (MDE_CPU_ARM)
2221 #define EFI_REMOVABLE_MEDIA_FILE_NAME EFI_REMOVABLE_MEDIA_FILE_NAME_ARM
2222 #elif defined (MDE_CPU_AARCH64)
2223 #define EFI_REMOVABLE_MEDIA_FILE_NAME EFI_REMOVABLE_MEDIA_FILE_NAME_AARCH64
2224 #elif defined (MDE_CPU_RISCV64)
2225 #define EFI_REMOVABLE_MEDIA_FILE_NAME EFI_REMOVABLE_MEDIA_FILE_NAME_RISCV64
2227 #error Unknown Processor Type
2232 // The directory within the active EFI System Partition defined for delivery of capsule to firmware
2234 #define EFI_CAPSULE_FILE_DIRECTORY L"\\EFI\\UpdateCapsule\\"
2236 #include <Uefi/UefiPxe.h>
2237 #include <Uefi/UefiGpt.h>
2238 #include <Uefi/UefiInternalFormRepresentation.h>