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//usr/include/efi/efiapi.h

#ifndef _EFI_API_H
#define _EFI_API_H

/*++

Module Name:

efiapi.h

Abstract:

Global EFI runtime & boot service interfaces

Revision History

--*/

//
// EFI Specification Revision
//

#define EFI_SPECIFICATION_MAJOR_REVISION 1
#define EFI_SPECIFICATION_MINOR_REVISION 02

//
// Declare forward referenced data structures
//

INTERFACE_DECL(_EFI_SYSTEM_TABLE);

//
// EFI Memory
//

typedef
EFI_STATUS
(EFIAPI *EFI_ALLOCATE_PAGES) (
    IN EFI_ALLOCATE_TYPE            Type,
    IN EFI_MEMORY_TYPE              MemoryType,
    IN UINTN                        NoPages,
    OUT EFI_PHYSICAL_ADDRESS        *Memory
    );

typedef
EFI_STATUS
(EFIAPI *EFI_FREE_PAGES) (
    IN EFI_PHYSICAL_ADDRESS         Memory,
    IN UINTN                        NoPages
    );

typedef
EFI_STATUS
(EFIAPI *EFI_GET_MEMORY_MAP) (
    IN OUT UINTN                    *MemoryMapSize,
    IN OUT EFI_MEMORY_DESCRIPTOR    *MemoryMap,
    OUT UINTN                       *MapKey,
    OUT UINTN                       *DescriptorSize,
    OUT UINT32                      *DescriptorVersion
    );

#define NextMemoryDescriptor(Ptr,Size)  ((EFI_MEMORY_DESCRIPTOR *) (((UINT8 *) Ptr) + Size))

typedef
EFI_STATUS
(EFIAPI *EFI_ALLOCATE_POOL) (
    IN EFI_MEMORY_TYPE              PoolType,
    IN UINTN                        Size,
    OUT VOID                        **Buffer
    );

typedef
EFI_STATUS
(EFIAPI *EFI_FREE_POOL) (
    IN VOID                         *Buffer
    );

typedef 
EFI_STATUS
(EFIAPI *EFI_SET_VIRTUAL_ADDRESS_MAP) (
    IN UINTN                        MemoryMapSize,
    IN UINTN                        DescriptorSize,
    IN UINT32                       DescriptorVersion,
    IN EFI_MEMORY_DESCRIPTOR        *VirtualMap
    );

#define EFI_OPTIONAL_PTR            0x00000001
#define EFI_INTERNAL_FNC            0x00000002      // Pointer to internal runtime fnc
#define EFI_INTERNAL_PTR            0x00000004      // Pointer to internal runtime data

typedef 
EFI_STATUS
(EFIAPI *EFI_CONVERT_POINTER) (
    IN UINTN                        DebugDisposition,
    IN OUT VOID                     **Address
    );

//
// EFI Events
//

#define EVT_TIMER                           0x80000000
#define EVT_RUNTIME                         0x40000000
#define EVT_RUNTIME_CONTEXT                 0x20000000

#define EVT_NOTIFY_WAIT                     0x00000100
#define EVT_NOTIFY_SIGNAL                   0x00000200

#define EVT_SIGNAL_EXIT_BOOT_SERVICES       0x00000201
#define EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE   0x60000202

#define EVT_EFI_SIGNAL_MASK                 0x000000FF
#define EVT_EFI_SIGNAL_MAX                  2

typedef
VOID
(EFIAPI *EFI_EVENT_NOTIFY) (
    IN EFI_EVENT                Event,
    IN VOID                     *Context
    );

typedef
EFI_STATUS
(EFIAPI *EFI_CREATE_EVENT) (
    IN UINT32                       Type,
    IN EFI_TPL                      NotifyTpl,
    IN EFI_EVENT_NOTIFY             NotifyFunction,
    IN VOID                         *NotifyContext,
    OUT EFI_EVENT                   *Event
    );

typedef enum {
    TimerCancel,
    TimerPeriodic,
    TimerRelative,
    TimerTypeMax
} EFI_TIMER_DELAY;

typedef
EFI_STATUS
(EFIAPI *EFI_SET_TIMER) (
    IN EFI_EVENT                Event,
    IN EFI_TIMER_DELAY          Type,
    IN UINT64                   TriggerTime
    );

typedef
EFI_STATUS
(EFIAPI *EFI_SIGNAL_EVENT) (
    IN EFI_EVENT                Event
    );

typedef 
EFI_STATUS
(EFIAPI *EFI_WAIT_FOR_EVENT) (
    IN UINTN                    NumberOfEvents,
    IN EFI_EVENT                *Event,
    OUT UINTN                   *Index
    );

typedef
EFI_STATUS
(EFIAPI *EFI_CLOSE_EVENT) (
    IN EFI_EVENT                Event
    );

typedef
EFI_STATUS
(EFIAPI *EFI_CHECK_EVENT) (
    IN EFI_EVENT                Event
    );

//
// Task priority level
//

#define TPL_APPLICATION    4
#define TPL_CALLBACK       8
#define TPL_NOTIFY        16 
#define TPL_HIGH_LEVEL    31

typedef
EFI_TPL
(EFIAPI *EFI_RAISE_TPL) (
    IN EFI_TPL      NewTpl
    );

typedef
VOID
(EFIAPI *EFI_RESTORE_TPL) (
    IN EFI_TPL      OldTpl
    );

//
// EFI platform varibles
//

#define EFI_GLOBAL_VARIABLE     \
    { 0x8BE4DF61, 0x93CA, 0x11d2, {0xAA, 0x0D, 0x00, 0xE0, 0x98, 0x03, 0x2B, 0x8C} }

// Variable attributes
#define EFI_VARIABLE_NON_VOLATILE           0x00000001
#define EFI_VARIABLE_BOOTSERVICE_ACCESS     0x00000002
#define EFI_VARIABLE_RUNTIME_ACCESS         0x00000004

// Variable size limitation
#define EFI_MAXIMUM_VARIABLE_SIZE           1024

typedef
EFI_STATUS
(EFIAPI *EFI_GET_VARIABLE) (
    IN CHAR16                       *VariableName,
    IN EFI_GUID                     *VendorGuid,
    OUT UINT32                      *Attributes OPTIONAL,
    IN OUT UINTN                    *DataSize,
    OUT VOID                        *Data
    );

typedef
EFI_STATUS
(EFIAPI *EFI_GET_NEXT_VARIABLE_NAME) (
    IN OUT UINTN                    *VariableNameSize,
    IN OUT CHAR16                   *VariableName,
    IN OUT EFI_GUID                 *VendorGuid
    );

typedef
EFI_STATUS
(EFIAPI *EFI_SET_VARIABLE) (
    IN CHAR16                       *VariableName,
    IN EFI_GUID                     *VendorGuid,
    IN UINT32                       Attributes,
    IN UINTN                        DataSize,
    IN VOID                         *Data
    );

//
// EFI Time
//

typedef struct {
        UINT32                      Resolution;     // 1e-6 parts per million
        UINT32                      Accuracy;       // hertz
        BOOLEAN                     SetsToZero;     // Set clears sub-second time
} EFI_TIME_CAPABILITIES;

typedef
EFI_STATUS
(EFIAPI *EFI_GET_TIME) (
    OUT EFI_TIME                    *Time,
    OUT EFI_TIME_CAPABILITIES       *Capabilities OPTIONAL
    );

typedef
EFI_STATUS
(EFIAPI *EFI_SET_TIME) (
    IN EFI_TIME                     *Time
    );

typedef
EFI_STATUS
(EFIAPI *EFI_GET_WAKEUP_TIME) (
    OUT BOOLEAN                     *Enabled,
    OUT BOOLEAN                     *Pending,
    OUT EFI_TIME                    *Time
    );

typedef
EFI_STATUS
(EFIAPI *EFI_SET_WAKEUP_TIME) (
    IN BOOLEAN                      Enable,
    IN EFI_TIME                     *Time OPTIONAL
    );

//
// Image functions
//

// PE32+ Subsystem type for EFI images

#if !defined(IMAGE_SUBSYSTEM_EFI_APPLICATION)
#define IMAGE_SUBSYSTEM_EFI_APPLICATION             10
#define IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER     11
#define IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER          12
#endif

// PE32+ Machine type for EFI images

#if !defined(EFI_IMAGE_MACHINE_IA32)
#define EFI_IMAGE_MACHINE_IA32      0x014c
#endif

#if !defined(EFI_IMAGE_MACHINE_IA64)
#define EFI_IMAGE_MACHINE_IA64      0x0200
#endif

// Image Entry prototype

typedef 
EFI_STATUS
(EFIAPI *EFI_IMAGE_ENTRY_POINT) (
    IN EFI_HANDLE                   ImageHandle,
    IN struct _EFI_SYSTEM_TABLE     *SystemTable
    );

typedef 
EFI_STATUS
(EFIAPI *EFI_IMAGE_LOAD) (
    IN BOOLEAN                      BootPolicy,
    IN EFI_HANDLE                   ParentImageHandle,
    IN EFI_DEVICE_PATH              *FilePath,
    IN VOID                         *SourceBuffer   OPTIONAL,
    IN UINTN                        SourceSize,
    OUT EFI_HANDLE                  *ImageHandle
    );

typedef 
EFI_STATUS
(EFIAPI *EFI_IMAGE_START) (
    IN EFI_HANDLE                   ImageHandle,
    OUT UINTN                       *ExitDataSize,
    OUT CHAR16                      **ExitData  OPTIONAL
    );

typedef
EFI_STATUS
(EFIAPI *EFI_EXIT) (
    IN EFI_HANDLE                   ImageHandle,
    IN EFI_STATUS                   ExitStatus,
    IN UINTN                        ExitDataSize,
    IN CHAR16                       *ExitData OPTIONAL
    );

typedef 
EFI_STATUS
(EFIAPI *EFI_IMAGE_UNLOAD) (
    IN EFI_HANDLE                   ImageHandle
    );

// Image handle
#define LOADED_IMAGE_PROTOCOL      \
    { 0x5B1B31A1, 0x9562, 0x11d2, {0x8E, 0x3F, 0x00, 0xA0, 0xC9, 0x69, 0x72, 0x3B} }

#define EFI_IMAGE_INFORMATION_REVISION      0x1000
typedef struct {
    UINT32                          Revision;
    EFI_HANDLE                      ParentHandle;
    struct _EFI_SYSTEM_TABLE        *SystemTable;

// Source location of image
    EFI_HANDLE                      DeviceHandle;
    EFI_DEVICE_PATH                 *FilePath;
    VOID                            *Reserved;

// Images load options
    UINT32                          LoadOptionsSize;
    VOID                            *LoadOptions;

// Location of where image was loaded
    VOID                            *ImageBase;
    UINT64                          ImageSize;
    EFI_MEMORY_TYPE                 ImageCodeType;
    EFI_MEMORY_TYPE                 ImageDataType;

// If the driver image supports a dynamic unload request
    EFI_IMAGE_UNLOAD                Unload;

} EFI_LOADED_IMAGE;

typedef
EFI_STATUS
(EFIAPI *EFI_EXIT_BOOT_SERVICES) (
    IN EFI_HANDLE                   ImageHandle,
    IN UINTN                        MapKey
    );

//
// Misc
//

typedef
EFI_STATUS
(EFIAPI *EFI_STALL) (
    IN UINTN                    Microseconds
    );

typedef
EFI_STATUS
(EFIAPI *EFI_SET_WATCHDOG_TIMER) (
    IN UINTN                    Timeout,
    IN UINT64                   WatchdogCode,
    IN UINTN                    DataSize,
    IN CHAR16                   *WatchdogData OPTIONAL
    );

typedef enum {
    EfiResetCold,
    EfiResetWarm
} EFI_RESET_TYPE;

typedef
EFI_STATUS
(EFIAPI *EFI_RESET_SYSTEM) (
    IN EFI_RESET_TYPE           ResetType,
    IN EFI_STATUS               ResetStatus,
    IN UINTN                    DataSize,
    IN CHAR16                   *ResetData OPTIONAL
    );

typedef
EFI_STATUS
(EFIAPI *EFI_GET_NEXT_MONOTONIC_COUNT) (
    OUT UINT64                  *Count
    );

typedef
EFI_STATUS
(EFIAPI *EFI_GET_NEXT_HIGH_MONO_COUNT) (
    OUT UINT32                  *HighCount
    );

//
// Protocol handler functions
//

typedef enum {
    EFI_NATIVE_INTERFACE,
    EFI_PCODE_INTERFACE
} EFI_INTERFACE_TYPE;

typedef
EFI_STATUS
(EFIAPI *EFI_INSTALL_PROTOCOL_INTERFACE) (
    IN OUT EFI_HANDLE           *Handle,
    IN EFI_GUID                 *Protocol,
    IN EFI_INTERFACE_TYPE       InterfaceType,
    IN VOID                     *Interface
    );

typedef
EFI_STATUS
(EFIAPI *EFI_REINSTALL_PROTOCOL_INTERFACE) (
    IN EFI_HANDLE               Handle,
    IN EFI_GUID                 *Protocol,
    IN VOID                     *OldInterface,
    IN VOID                     *NewInterface
    );

typedef
EFI_STATUS
(EFIAPI *EFI_UNINSTALL_PROTOCOL_INTERFACE) (
    IN EFI_HANDLE               Handle,
    IN EFI_GUID                 *Protocol,
    IN VOID                     *Interface
    );

typedef
EFI_STATUS
(EFIAPI *EFI_HANDLE_PROTOCOL) (
    IN EFI_HANDLE               Handle,
    IN EFI_GUID                 *Protocol,
    OUT VOID                    **Interface
    );

typedef
EFI_STATUS 
(EFIAPI *EFI_REGISTER_PROTOCOL_NOTIFY) (
    IN EFI_GUID                 *Protocol,
    IN EFI_EVENT                Event,
    OUT VOID                    **Registration
    );

typedef enum {
    AllHandles,
    ByRegisterNotify,
    ByProtocol
} EFI_LOCATE_SEARCH_TYPE;

typedef
EFI_STATUS
(EFIAPI *EFI_LOCATE_HANDLE) (
    IN EFI_LOCATE_SEARCH_TYPE   SearchType,
    IN EFI_GUID                 *Protocol OPTIONAL,
    IN VOID                     *SearchKey OPTIONAL,
    IN OUT UINTN                *BufferSize,
    OUT EFI_HANDLE              *Buffer
    );

typedef
EFI_STATUS
(EFIAPI *EFI_LOCATE_DEVICE_PATH) (
    IN EFI_GUID                 *Protocol,
    IN OUT EFI_DEVICE_PATH      **DevicePath,
    OUT EFI_HANDLE              *Device
    );

typedef
EFI_STATUS
(EFIAPI *EFI_INSTALL_CONFIGURATION_TABLE) (
    IN EFI_GUID                 *Guid,
    IN VOID                     *Table
    );

typedef
EFI_STATUS
(EFIAPI *EFI_RESERVED_SERVICE) (
    );

//
// Standard EFI table header
//

typedef struct _EFI_TABLE_HEARDER {
    UINT64                      Signature;
    UINT32                      Revision;
    UINT32                      HeaderSize;
    UINT32                      CRC32;
    UINT32                      Reserved;
} EFI_TABLE_HEADER;

//
// EFI Runtime Serivces Table
//

#define EFI_RUNTIME_SERVICES_SIGNATURE  0x56524553544e5552
#define EFI_RUNTIME_SERVICES_REVISION   (EFI_SPECIFICATION_MAJOR_REVISION<<16) | (EFI_SPECIFICATION_MINOR_REVISION)

typedef struct  {
    EFI_TABLE_HEADER                Hdr;

//
    // Time services
    //

EFI_GET_TIME                    GetTime;
    EFI_SET_TIME                    SetTime;
    EFI_GET_WAKEUP_TIME             GetWakeupTime;
    EFI_SET_WAKEUP_TIME             SetWakeupTime;

//
    // Virtual memory services
    //

EFI_SET_VIRTUAL_ADDRESS_MAP     SetVirtualAddressMap;
    EFI_CONVERT_POINTER             ConvertPointer;

//
    // Variable serviers
    //

EFI_GET_VARIABLE                GetVariable;
    EFI_GET_NEXT_VARIABLE_NAME      GetNextVariableName;
    EFI_SET_VARIABLE                SetVariable;

//
    // Misc
    //

EFI_GET_NEXT_HIGH_MONO_COUNT    GetNextHighMonotonicCount;
    EFI_RESET_SYSTEM                ResetSystem;

} EFI_RUNTIME_SERVICES;

//
// EFI Boot Services Table
//

#define EFI_BOOT_SERVICES_SIGNATURE     0x56524553544f4f42
#define EFI_BOOT_SERVICES_REVISION      (EFI_SPECIFICATION_MAJOR_REVISION<<16) | (EFI_SPECIFICATION_MINOR_REVISION)

typedef struct _EFI_BOOT_SERVICES {

EFI_TABLE_HEADER                Hdr;

//
    // Task priority functions
    //

EFI_RAISE_TPL                   RaiseTPL;
    EFI_RESTORE_TPL                 RestoreTPL;

//
    // Memory functions
    //

EFI_ALLOCATE_PAGES              AllocatePages;
    EFI_FREE_PAGES                  FreePages;
    EFI_GET_MEMORY_MAP              GetMemoryMap;
    EFI_ALLOCATE_POOL               AllocatePool;
    EFI_FREE_POOL                   FreePool;

//
    // Event & timer functions
    //

EFI_CREATE_EVENT                CreateEvent;
    EFI_SET_TIMER                   SetTimer;
    EFI_WAIT_FOR_EVENT              WaitForEvent;
    EFI_SIGNAL_EVENT                SignalEvent;
    EFI_CLOSE_EVENT                 CloseEvent;
    EFI_CHECK_EVENT                 CheckEvent;

//
    // Protocol handler functions
    //

EFI_INSTALL_PROTOCOL_INTERFACE  InstallProtocolInterface;
    EFI_REINSTALL_PROTOCOL_INTERFACE ReinstallProtocolInterface;
    EFI_UNINSTALL_PROTOCOL_INTERFACE UninstallProtocolInterface;
    EFI_HANDLE_PROTOCOL             HandleProtocol;
    EFI_HANDLE_PROTOCOL             PCHandleProtocol;
    EFI_REGISTER_PROTOCOL_NOTIFY    RegisterProtocolNotify;
    EFI_LOCATE_HANDLE               LocateHandle;
    EFI_LOCATE_DEVICE_PATH          LocateDevicePath;
    EFI_INSTALL_CONFIGURATION_TABLE InstallConfigurationTable;

//
    // Image functions
    //

EFI_IMAGE_LOAD                  LoadImage;
    EFI_IMAGE_START                 StartImage;
    EFI_EXIT                        Exit;
    EFI_IMAGE_UNLOAD                UnloadImage;
    EFI_EXIT_BOOT_SERVICES          ExitBootServices;

//
    // Misc functions
    //

EFI_GET_NEXT_MONOTONIC_COUNT    GetNextMonotonicCount;
    EFI_STALL                       Stall;
    EFI_SET_WATCHDOG_TIMER          SetWatchdogTimer;

} EFI_BOOT_SERVICES;

//
// EFI Configuration Table and GUID definitions
//

#define MPS_TABLE_GUID    \
    { 0xeb9d2d2f, 0x2d88, 0x11d3, {0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d} }

#define ACPI_TABLE_GUID    \
    { 0xeb9d2d30, 0x2d88, 0x11d3, {0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d} }

#define ACPI_20_TABLE_GUID  \
    { 0x8868e871, 0xe4f1, 0x11d3, {0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81} }

#define SMBIOS_TABLE_GUID    \
    { 0xeb9d2d31, 0x2d88, 0x11d3, {0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d} }

#define SAL_SYSTEM_TABLE_GUID    \
    { 0xeb9d2d32, 0x2d88, 0x11d3, {0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d} }

typedef struct _EFI_CONFIGURATION_TABLE {
    EFI_GUID                VendorGuid;
    VOID                    *VendorTable;
} EFI_CONFIGURATION_TABLE;

//
// EFI System Table
//

#define EFI_SYSTEM_TABLE_SIGNATURE      0x5453595320494249
#define EFI_SYSTEM_TABLE_REVISION      (EFI_SPECIFICATION_MAJOR_REVISION<<16) | (EFI_SPECIFICATION_MINOR_REVISION)

typedef struct _EFI_SYSTEM_TABLE {
    EFI_TABLE_HEADER                Hdr;

CHAR16                          *FirmwareVendor;
    UINT32                          FirmwareRevision;

EFI_HANDLE                      ConsoleInHandle;
    SIMPLE_INPUT_INTERFACE          *ConIn;

EFI_HANDLE                      ConsoleOutHandle;
    SIMPLE_TEXT_OUTPUT_INTERFACE    *ConOut;

EFI_HANDLE                      StandardErrorHandle;
    SIMPLE_TEXT_OUTPUT_INTERFACE    *StdErr;

EFI_RUNTIME_SERVICES            *RuntimeServices;
    EFI_BOOT_SERVICES               *BootServices;

UINTN                           NumberOfTableEntries;
    EFI_CONFIGURATION_TABLE         *ConfigurationTable;

} EFI_SYSTEM_TABLE;

#endif