/* SPDX-License-Identifier: GPL-2.0 */

  /*
   * Extensible Firmware Interface
   * Based on 'Extensible Firmware Interface Specification' version 0.9,
   * April 30, 1999
   *
   * Copyright (C) 1999 VA Linux Systems
   * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
   * Copyright (C) 1999, 2002-2003 Hewlett-Packard Co.
   *	David Mosberger-Tang <davidm@hpl.hp.com>
   *	Stephane Eranian <eranian@hpl.hp.com>
   *
   * From include/linux/efi.h in kernel 4.1 with some additions/subtractions
   */
  
  #ifndef _EFI_API_H
  #define _EFI_API_H
  
  #include <efi.h>

  #include <charset.h>

  #ifdef CONFIG_EFI_LOADER
  #include <asm/setjmp.h>
  #endif

  /* UEFI spec version 2.8 */
  #define EFI_SPECIFICATION_VERSION (2 << 16 | 80)

  /* Types and defines for EFI CreateEvent */

  enum efi_timer_delay {

  	EFI_TIMER_STOP = 0,
  	EFI_TIMER_PERIODIC = 1,
  	EFI_TIMER_RELATIVE = 2
  };

  #define efi_intn_t ssize_t

  #define efi_uintn_t size_t

  typedef void *efi_hii_handle_t;
  typedef u16 *efi_string_t;
  typedef u16 efi_string_id_t;
  typedef u32 efi_hii_font_style_t;

  typedef u16 efi_question_id_t;
  typedef u16 efi_image_id_t;
  typedef u16 efi_form_id_t;

  #define EVT_TIMER				0x80000000
  #define EVT_RUNTIME				0x40000000
  #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 TPL_APPLICATION		0x04
  #define TPL_CALLBACK		0x08
  #define TPL_NOTIFY		0x10
  #define TPL_HIGH_LEVEL		0x1F

  struct efi_event;

  /* OsIndicationsSupported flags */
  #define EFI_OS_INDICATIONS_BOOT_TO_FW_UI		    0x0000000000000001
  #define EFI_OS_INDICATIONS_TIMESTAMP_REVOCATION		    0x0000000000000002
  #define EFI_OS_INDICATIONS_FILE_CAPSULE_DELIVERY_SUPPORTED  0x0000000000000004
  #define EFI_OS_INDICATIONS_FMP_CAPSULE_SUPPORTED	    0x0000000000000008
  #define EFI_OS_INDICATIONS_CAPSULE_RESULT_VAR_SUPPORTED	    0x0000000000000010
  #define EFI_OS_INDICATIONS_START_OS_RECOVERY		    0x0000000000000020
  #define EFI_OS_INDICATIONS_START_PLATFORM_RECOVERY	    0x0000000000000040
  #define EFI_OS_INDICATIONS_JSON_CONFIG_DATA_REFRESH	    0x0000000000000080

  /* EFI Boot Services table */

  #define EFI_BOOT_SERVICES_SIGNATURE 0x56524553544f4f42

  struct efi_boot_services {
  	struct efi_table_hdr hdr;

  	efi_status_t (EFIAPI *raise_tpl)(efi_uintn_t new_tpl);
  	void (EFIAPI *restore_tpl)(efi_uintn_t old_tpl);

  	efi_status_t (EFIAPI *allocate_pages)(int, int, efi_uintn_t,

  					      efi_physical_addr_t *);

  	efi_status_t (EFIAPI *free_pages)(efi_physical_addr_t, efi_uintn_t);
  	efi_status_t (EFIAPI *get_memory_map)(efi_uintn_t *memory_map_size,
  					      struct efi_mem_desc *desc,
  					      efi_uintn_t *key,
  					      efi_uintn_t *desc_size,
  					      u32 *desc_version);
  	efi_status_t (EFIAPI *allocate_pool)(int, efi_uintn_t, void **);

  	efi_status_t (EFIAPI *free_pool)(void *);

  	efi_status_t (EFIAPI *create_event)(uint32_t type,

  			efi_uintn_t notify_tpl,

  			void (EFIAPI *notify_function) (
  					struct efi_event *event,
  					void *context),
  			void *notify_context, struct efi_event **event);

  	efi_status_t (EFIAPI *set_timer)(struct efi_event *event,
  					 enum efi_timer_delay type,
  					 uint64_t trigger_time);

  	efi_status_t (EFIAPI *wait_for_event)(efi_uintn_t number_of_events,
  					      struct efi_event **event,
  					      efi_uintn_t *index);

  	efi_status_t (EFIAPI *signal_event)(struct efi_event *event);
  	efi_status_t (EFIAPI *close_event)(struct efi_event *event);
  	efi_status_t (EFIAPI *check_event)(struct efi_event *event);

  #define EFI_NATIVE_INTERFACE	0x00000000

  	efi_status_t (EFIAPI *install_protocol_interface)(

  			efi_handle_t *handle, const efi_guid_t *protocol,

  			int protocol_interface_type, void *protocol_interface);
  	efi_status_t (EFIAPI *reinstall_protocol_interface)(

  			efi_handle_t handle, const efi_guid_t *protocol,

  			void *old_interface, void *new_interface);

  	efi_status_t (EFIAPI *uninstall_protocol_interface)(
  			efi_handle_t handle, const efi_guid_t *protocol,
  			void *protocol_interface);
  	efi_status_t (EFIAPI *handle_protocol)(
  			efi_handle_t handle, const efi_guid_t *protocol,
  			void **protocol_interface);

  	void *reserved;

  	efi_status_t (EFIAPI *register_protocol_notify)(

  			const efi_guid_t *protocol, struct efi_event *event,

  			void **registration);

  	efi_status_t (EFIAPI *locate_handle)(
  			enum efi_locate_search_type search_type,

  			const efi_guid_t *protocol, void *search_key,

  			efi_uintn_t *buffer_size, efi_handle_t *buffer);

  	efi_status_t (EFIAPI *locate_device_path)(const efi_guid_t *protocol,

  			struct efi_device_path **device_path,
  			efi_handle_t *device);

  	efi_status_t (EFIAPI *install_configuration_table)(
  			efi_guid_t *guid, void *table);

  
  	efi_status_t (EFIAPI *load_image)(bool boot_policiy,
  			efi_handle_t parent_image,
  			struct efi_device_path *file_path, void *source_buffer,

  			efi_uintn_t source_size, efi_handle_t *image);

  	efi_status_t (EFIAPI *start_image)(efi_handle_t handle,

  					   efi_uintn_t *exitdata_size,
  					   u16 **exitdata);

  	efi_status_t (EFIAPI *exit)(efi_handle_t handle,
  				    efi_status_t exit_status,

  				    efi_uintn_t exitdata_size, u16 *exitdata);

  	efi_status_t (EFIAPI *unload_image)(efi_handle_t image_handle);

  	efi_status_t (EFIAPI *exit_boot_services)(efi_handle_t image_handle,
  						  efi_uintn_t map_key);

  
  	efi_status_t (EFIAPI *get_next_monotonic_count)(u64 *count);
  	efi_status_t (EFIAPI *stall)(unsigned long usecs);

  	efi_status_t (EFIAPI *set_watchdog_timer)(unsigned long timeout,
  			uint64_t watchdog_code, unsigned long data_size,
  			uint16_t *watchdog_data);

  	efi_status_t(EFIAPI *connect_controller)(efi_handle_t controller_handle,
  			efi_handle_t *driver_image_handle,
  			struct efi_device_path *remaining_device_path,
  			bool recursive);

  	efi_status_t (EFIAPI *disconnect_controller)(
  			efi_handle_t controller_handle,
  			efi_handle_t driver_image_handle,
  			efi_handle_t child_handle);

  #define EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL  0x00000001
  #define EFI_OPEN_PROTOCOL_GET_PROTOCOL        0x00000002
  #define EFI_OPEN_PROTOCOL_TEST_PROTOCOL       0x00000004
  #define EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER 0x00000008
  #define EFI_OPEN_PROTOCOL_BY_DRIVER           0x00000010
  #define EFI_OPEN_PROTOCOL_EXCLUSIVE           0x00000020
  	efi_status_t (EFIAPI *open_protocol)(efi_handle_t handle,

  			const efi_guid_t *protocol, void **interface,

  			efi_handle_t agent_handle,
  			efi_handle_t controller_handle, u32 attributes);

  	efi_status_t (EFIAPI *close_protocol)(
  			efi_handle_t handle, const efi_guid_t *protocol,
  			efi_handle_t agent_handle,
  			efi_handle_t controller_handle);

  	efi_status_t(EFIAPI *open_protocol_information)(efi_handle_t handle,

  			const efi_guid_t *protocol,

  			struct efi_open_protocol_info_entry **entry_buffer,

  			efi_uintn_t *entry_count);

  	efi_status_t (EFIAPI *protocols_per_handle)(efi_handle_t handle,
  			efi_guid_t ***protocol_buffer,

  			efi_uintn_t *protocols_buffer_count);

  	efi_status_t (EFIAPI *locate_handle_buffer) (
  			enum efi_locate_search_type search_type,

  			const efi_guid_t *protocol, void *search_key,

  			efi_uintn_t *no_handles, efi_handle_t **buffer);

  	efi_status_t (EFIAPI *locate_protocol)(const efi_guid_t *protocol,

  			void *registration, void **protocol_interface);
  	efi_status_t (EFIAPI *install_multiple_protocol_interfaces)(

  			efi_handle_t *handle, ...);

  	efi_status_t (EFIAPI *uninstall_multiple_protocol_interfaces)(

  			efi_handle_t handle, ...);

  	efi_status_t (EFIAPI *calculate_crc32)(const void *data,
  					       efi_uintn_t data_size,
  					       u32 *crc32);

  	void (EFIAPI *copy_mem)(void *destination, const void *source,
  			size_t length);
  	void (EFIAPI *set_mem)(void *buffer, size_t size, uint8_t value);

  	efi_status_t (EFIAPI *create_event_ex)(
  				uint32_t type, efi_uintn_t notify_tpl,
  				void (EFIAPI *notify_function) (
  					struct efi_event *event,
  					void *context),
  				void *notify_context,
  				efi_guid_t *event_group,
  				struct efi_event **event);

  };
  
  /* Types and defines for EFI ResetSystem */
  enum efi_reset_type {
  	EFI_RESET_COLD = 0,
  	EFI_RESET_WARM = 1,

  	EFI_RESET_SHUTDOWN = 2,
  	EFI_RESET_PLATFORM_SPECIFIC = 3,

  };
  
  /* EFI Runtime Services table */

  #define EFI_RUNTIME_SERVICES_SIGNATURE	0x56524553544e5552ULL

  #define CAPSULE_FLAGS_PERSIST_ACROSS_RESET	0x00010000
  #define CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE	0x00020000
  #define CAPSULE_FLAGS_INITIATE_RESET		0x00040000
  
  struct efi_capsule_header {

  	efi_guid_t capsule_guid;

  	u32 header_size;
  	u32 flags;
  	u32 capsule_image_size;

  } __packed;

  #define EFI_RT_SUPPORTED_GET_TIME			0x0001
  #define EFI_RT_SUPPORTED_SET_TIME			0x0002
  #define EFI_RT_SUPPORTED_GET_WAKEUP_TIME		0x0004
  #define EFI_RT_SUPPORTED_SET_WAKEUP_TIME		0x0008
  #define EFI_RT_SUPPORTED_GET_VARIABLE			0x0010
  #define EFI_RT_SUPPORTED_GET_NEXT_VARIABLE_NAME		0x0020
  #define EFI_RT_SUPPORTED_SET_VARIABLE			0x0040
  #define EFI_RT_SUPPORTED_SET_VIRTUAL_ADDRESS_MAP	0x0080
  #define EFI_RT_SUPPORTED_CONVERT_POINTER		0x0100
  #define EFI_RT_SUPPORTED_GET_NEXT_HIGH_MONOTONIC_COUNT	0x0200
  #define EFI_RT_SUPPORTED_RESET_SYSTEM			0x0400
  #define EFI_RT_SUPPORTED_UPDATE_CAPSULE			0x0800
  #define EFI_RT_SUPPORTED_QUERY_CAPSULE_CAPABILITIES	0x1000
  #define EFI_RT_SUPPORTED_QUERY_VARIABLE_INFO		0x2000

  #define EFI_RT_PROPERTIES_TABLE_GUID \
  	EFI_GUID(0xeb66918a, 0x7eef, 0x402a, 0x84, 0x2e, \
  		 0x93, 0x1d, 0x21, 0xc3, 0x8a, 0xe9)
  
  #define EFI_RT_PROPERTIES_TABLE_VERSION	0x1
  
  struct efi_rt_properties_table {
  	u16 version;
  	u16 length;
  	u32 runtime_services_supported;
  };

  struct efi_runtime_services {
  	struct efi_table_hdr hdr;

  	efi_status_t (EFIAPI *get_time)(struct efi_time *time,
  			struct efi_time_cap *capabilities);
  	efi_status_t (EFIAPI *set_time)(struct efi_time *time);
  	efi_status_t (EFIAPI *get_wakeup_time)(char *enabled, char *pending,
  			struct efi_time *time);
  	efi_status_t (EFIAPI *set_wakeup_time)(char enabled,
  			struct efi_time *time);
  	efi_status_t (EFIAPI *set_virtual_address_map)(

  			efi_uintn_t memory_map_size,
  			efi_uintn_t descriptor_size,

  			uint32_t descriptor_version,
  			struct efi_mem_desc *virtmap);

  	efi_status_t (EFIAPI *convert_pointer)(
  			efi_uintn_t debug_disposition, void **address);

  	efi_status_t (EFIAPI *get_variable)(u16 *variable_name,

  					    const efi_guid_t *vendor,
  					    u32 *attributes,

  					    efi_uintn_t *data_size, void *data);
  	efi_status_t (EFIAPI *get_next_variable_name)(
  			efi_uintn_t *variable_name_size,

  			u16 *variable_name, efi_guid_t *vendor);

  	efi_status_t (EFIAPI *set_variable)(u16 *variable_name,

  					    const efi_guid_t *vendor,
  					    u32 attributes,

  					    efi_uintn_t data_size,
  					    const void *data);

  	efi_status_t (EFIAPI *get_next_high_mono_count)(
  			uint32_t *high_count);

  	void (EFIAPI *reset_system)(enum efi_reset_type reset_type,
  				    efi_status_t reset_status,
  				    unsigned long data_size, void *reset_data);

  	efi_status_t (EFIAPI *update_capsule)(
  			struct efi_capsule_header **capsule_header_array,
  			efi_uintn_t capsule_count,
  			u64 scatter_gather_list);
  	efi_status_t (EFIAPI *query_capsule_caps)(
  			struct efi_capsule_header **capsule_header_array,
  			efi_uintn_t capsule_count,

  			u64 *maximum_capsule_size,
  			u32 *reset_type);

  	efi_status_t (EFIAPI *query_variable_info)(
  			u32 attributes,

  			u64 *maximum_variable_storage_size,
  			u64 *remaining_variable_storage_size,
  			u64 *maximum_variable_size);

  };

  /* EFI event group GUID definitions */
  #define EFI_EVENT_GROUP_EXIT_BOOT_SERVICES \
  	EFI_GUID(0x27abf055, 0xb1b8, 0x4c26, 0x80, 0x48, \
  		 0x74, 0x8f, 0x37, 0xba, 0xa2, 0xdf)
  
  #define EFI_EVENT_GROUP_VIRTUAL_ADDRESS_CHANGE \
  	EFI_GUID(0x13fa7698, 0xc831, 0x49c7, 0x87, 0xea, \
  		 0x8f, 0x43, 0xfc, 0xc2, 0x51, 0x96)
  
  #define EFI_EVENT_GROUP_MEMORY_MAP_CHANGE \
  	EFI_GUID(0x78bee926, 0x692f, 0x48fd, 0x9e, 0xdb, \
  		 0x01, 0x42, 0x2e, 0xf0, 0xd7, 0xab)
  
  #define EFI_EVENT_GROUP_READY_TO_BOOT \
  	EFI_GUID(0x7ce88fb3, 0x4bd7, 0x4679, 0x87, 0xa8, \
  		 0xa8, 0xd8, 0xde, 0xe5, 0x0d, 0x2b)
  
  #define EFI_EVENT_GROUP_RESET_SYSTEM \
  	EFI_GUID(0x62da6a56, 0x13fb, 0x485a, 0xa8, 0xda, \
  		 0xa3, 0xdd, 0x79, 0x12, 0xcb, 0x6b)

  /* EFI Configuration Table and GUID definitions */
  #define NULL_GUID \
  	EFI_GUID(0x00000000, 0x0000, 0x0000, 0x00, 0x00, \
  		 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)

  #define EFI_GLOBAL_VARIABLE_GUID \
  	EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, \
  		 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c)

  #define EFI_FDT_GUID \
  	EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, \
  		 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0)

  #define EFI_ACPI_TABLE_GUID \
  	EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, \
  		 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81)

  #define SMBIOS_TABLE_GUID \
  	EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3,  \
  		 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)

  #define EFI_LOAD_FILE_PROTOCOL_GUID \
  	EFI_GUID(0x56ec3091, 0x954c, 0x11d2, \
  		 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
  
  #define EFI_LOAD_FILE2_PROTOCOL_GUID \
  	EFI_GUID(0x4006c0c1, 0xfcb3, 0x403e, \
  		 0x99, 0x6d, 0x4a, 0x6c, 0x87, 0x24, 0xe0, 0x6d)

  struct efi_configuration_table {

  	efi_guid_t guid;
  	void *table;

  } __packed;

  
  #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)

  struct efi_system_table {
  	struct efi_table_hdr hdr;

  	u16 *fw_vendor;   /* physical addr of wchar_t vendor string */

  	u32 fw_revision;

  	efi_handle_t con_in_handle;

  	struct efi_simple_text_input_protocol *con_in;

  	efi_handle_t con_out_handle;

  	struct efi_simple_text_output_protocol *con_out;

  	efi_handle_t stderr_handle;

  	struct efi_simple_text_output_protocol *std_err;

  	struct efi_runtime_services *runtime;
  	struct efi_boot_services *boottime;

  	efi_uintn_t nr_tables;

  	struct efi_configuration_table *tables;

  };

  #define EFI_LOADED_IMAGE_PROTOCOL_GUID \

  	EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, \
  		 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)

  #define EFI_LOADED_IMAGE_DEVICE_PATH_PROTOCOL_GUID \

  	EFI_GUID(0xbc62157e, 0x3e33, 0x4fec, \
  		 0x99, 0x20, 0x2d, 0x3b, 0x36, 0xd7, 0x50, 0xdf)

  #define EFI_LOADED_IMAGE_PROTOCOL_REVISION 0x1000

  struct efi_loaded_image {
  	u32 revision;
  	void *parent_handle;
  	struct efi_system_table *system_table;

  	efi_handle_t device_handle;
  	struct efi_device_path *file_path;

  	void *reserved;
  	u32 load_options_size;
  	void *load_options;
  	void *image_base;
  	aligned_u64 image_size;
  	unsigned int image_code_type;
  	unsigned int image_data_type;

  	efi_status_t (EFIAPI *unload)(efi_handle_t image_handle);

  };

  #define EFI_DEVICE_PATH_PROTOCOL_GUID \

  	EFI_GUID(0x09576e91, 0x6d3f, 0x11d2, \

  		 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)

  
  #define DEVICE_PATH_TYPE_END			0x7f

  #  define DEVICE_PATH_SUB_TYPE_INSTANCE_END	0x01

  #  define DEVICE_PATH_SUB_TYPE_END		0xff

  struct efi_device_path {
  	u8 type;
  	u8 sub_type;
  	u16 length;

  } __packed;

  struct efi_mac_addr {
  	u8 addr[32];

  } __packed;

  #define DEVICE_PATH_TYPE_HARDWARE_DEVICE	0x01

  #  define DEVICE_PATH_SUB_TYPE_MEMORY		0x03

  #  define DEVICE_PATH_SUB_TYPE_VENDOR		0x04

  struct efi_device_path_memory {
  	struct efi_device_path dp;
  	u32 memory_type;
  	u64 start_address;
  	u64 end_address;
  } __packed;

  struct efi_device_path_vendor {
  	struct efi_device_path dp;
  	efi_guid_t guid;
  	u8 vendor_data[];
  } __packed;
  
  #define DEVICE_PATH_TYPE_ACPI_DEVICE		0x02
  #  define DEVICE_PATH_SUB_TYPE_ACPI_DEVICE	0x01
  
  #define EFI_PNP_ID(ID)				(u32)(((ID) << 16) | 0x41D0)
  #define EISA_PNP_ID(ID)				EFI_PNP_ID(ID)

  #define EISA_PNP_NUM(ID)			((ID) >> 16)

  
  struct efi_device_path_acpi_path {
  	struct efi_device_path dp;
  	u32 hid;
  	u32 uid;
  } __packed;

  #define DEVICE_PATH_TYPE_MESSAGING_DEVICE	0x03

  #  define DEVICE_PATH_SUB_TYPE_MSG_ATAPI	0x01
  #  define DEVICE_PATH_SUB_TYPE_MSG_SCSI		0x02

  #  define DEVICE_PATH_SUB_TYPE_MSG_USB		0x05

  #  define DEVICE_PATH_SUB_TYPE_MSG_MAC_ADDR	0x0b

  #  define DEVICE_PATH_SUB_TYPE_MSG_USB_CLASS	0x0f

  #  define DEVICE_PATH_SUB_TYPE_MSG_NVME		0x17

  #  define DEVICE_PATH_SUB_TYPE_MSG_SD		0x1a
  #  define DEVICE_PATH_SUB_TYPE_MSG_MMC		0x1d

  struct efi_device_path_atapi {
  	struct efi_device_path dp;
  	u8 primary_secondary;
  	u8 slave_master;
  	u16 logical_unit_number;
  } __packed;
  
  struct efi_device_path_scsi {
  	struct efi_device_path dp;
  	u16 target_id;
  	u16 logical_unit_number;
  } __packed;

  struct efi_device_path_usb {
  	struct efi_device_path dp;
  	u8 parent_port_number;
  	u8 usb_interface;
  } __packed;

  
  struct efi_device_path_mac_addr {
  	struct efi_device_path dp;
  	struct efi_mac_addr mac;
  	u8 if_type;

  } __packed;

  struct efi_device_path_usb_class {
  	struct efi_device_path dp;
  	u16 vendor_id;
  	u16 product_id;
  	u8 device_class;
  	u8 device_subclass;
  	u8 device_protocol;
  } __packed;

  struct efi_device_path_sd_mmc_path {
  	struct efi_device_path dp;
  	u8 slot_number;
  } __packed;

  struct efi_device_path_nvme {
  	struct efi_device_path dp;
  	u32 ns_id;
  	u8 eui64[8];
  } __packed;

  #define DEVICE_PATH_TYPE_MEDIA_DEVICE		0x04

  #  define DEVICE_PATH_SUB_TYPE_HARD_DRIVE_PATH	0x01
  #  define DEVICE_PATH_SUB_TYPE_CDROM_PATH	0x02

  #  define DEVICE_PATH_SUB_TYPE_VENDOR_PATH	0x03

  #  define DEVICE_PATH_SUB_TYPE_FILE_PATH	0x04

  struct efi_device_path_hard_drive_path {
  	struct efi_device_path dp;
  	u32 partition_number;
  	u64 partition_start;
  	u64 partition_end;
  	u8 partition_signature[16];
  	u8 partmap_type;
  	u8 signature_type;
  } __packed;
  
  struct efi_device_path_cdrom_path {
  	struct efi_device_path dp;
  	u32 boot_entry;
  	u64 partition_start;

  	u64 partition_size;

  } __packed;

  struct efi_device_path_file_path {
  	struct efi_device_path dp;

  	u16 str[];

  } __packed;

  #define EFI_BLOCK_IO_PROTOCOL_GUID \

  	EFI_GUID(0x964e5b21, 0x6459, 0x11d2, \
  		 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)

  struct efi_block_io_media {

  	u32 media_id;
  	char removable_media;
  	char media_present;
  	char logical_partition;
  	char read_only;
  	char write_caching;
  	u8 pad[3];
  	u32 block_size;
  	u32 io_align;
  	u8 pad2[4];
  	u64 last_block;

  	/* Added in revision 2 of the protocol */
  	u64 lowest_aligned_lba;
  	u32 logical_blocks_per_physical_block;
  	/* Added in revision 3 of the protocol */
  	u32 optimal_transfer_length_granualarity;

  };

  #define EFI_BLOCK_IO_PROTOCOL_REVISION2	0x00020001
  #define EFI_BLOCK_IO_PROTOCOL_REVISION3	0x0002001f

  struct efi_block_io {
  	u64 revision;
  	struct efi_block_io_media *media;
  	efi_status_t (EFIAPI *reset)(struct efi_block_io *this,
  			char extended_verification);
  	efi_status_t (EFIAPI *read_blocks)(struct efi_block_io *this,

  			u32 media_id, u64 lba, efi_uintn_t buffer_size,

  			void *buffer);
  	efi_status_t (EFIAPI *write_blocks)(struct efi_block_io *this,

  			u32 media_id, u64 lba, efi_uintn_t buffer_size,

  			void *buffer);
  	efi_status_t (EFIAPI *flush_blocks)(struct efi_block_io *this);
  };

  struct simple_text_output_mode {
  	s32 max_mode;
  	s32 mode;
  	s32 attribute;
  	s32 cursor_column;
  	s32 cursor_row;
  	bool cursor_visible;
  };

  #define EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL_GUID \
  	EFI_GUID(0x387477c2, 0x69c7, 0x11d2, \
  		 0x8e, 0x39, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b)

  #define EFI_BLACK                0x00
  #define EFI_BLUE                 0x01
  #define EFI_GREEN                0x02
  #define EFI_CYAN                 0x03
  #define EFI_RED                  0x04
  #define EFI_MAGENTA              0x05
  #define EFI_BROWN                0x06
  #define EFI_LIGHTGRAY            0x07
  #define EFI_BRIGHT               0x08
  #define EFI_DARKGRAY             0x08
  #define EFI_LIGHTBLUE            0x09
  #define EFI_LIGHTGREEN           0x0a
  #define EFI_LIGHTCYAN            0x0b
  #define EFI_LIGHTRED             0x0c
  #define EFI_LIGHTMAGENTA         0x0d
  #define EFI_YELLOW               0x0e
  #define EFI_WHITE                0x0f
  #define EFI_BACKGROUND_BLACK     0x00
  #define EFI_BACKGROUND_BLUE      0x10
  #define EFI_BACKGROUND_GREEN     0x20
  #define EFI_BACKGROUND_CYAN      0x30
  #define EFI_BACKGROUND_RED       0x40
  #define EFI_BACKGROUND_MAGENTA   0x50
  #define EFI_BACKGROUND_BROWN     0x60
  #define EFI_BACKGROUND_LIGHTGRAY 0x70
  
  /* extract foreground color from EFI attribute */
  #define EFI_ATTR_FG(attr)        ((attr) & 0x07)
  /* treat high bit of FG as bright/bold (similar to edk2) */
  #define EFI_ATTR_BOLD(attr)      (((attr) >> 3) & 0x01)
  /* extract background color from EFI attribute */
  #define EFI_ATTR_BG(attr)        (((attr) >> 4) & 0x7)

  struct efi_simple_text_output_protocol {

  	efi_status_t (EFIAPI *reset)(
  			struct efi_simple_text_output_protocol *this,
  			char extended_verification);

  	efi_status_t (EFIAPI *output_string)(
  			struct efi_simple_text_output_protocol *this,

  			const efi_string_t str);

  	efi_status_t (EFIAPI *test_string)(
  			struct efi_simple_text_output_protocol *this,

  			const efi_string_t str);

  	efi_status_t(EFIAPI *query_mode)(
  			struct efi_simple_text_output_protocol *this,
  			unsigned long mode_number, unsigned long *columns,
  			unsigned long *rows);
  	efi_status_t(EFIAPI *set_mode)(
  			struct efi_simple_text_output_protocol *this,
  			unsigned long mode_number);
  	efi_status_t(EFIAPI *set_attribute)(
  			struct efi_simple_text_output_protocol *this,
  			unsigned long attribute);
  	efi_status_t(EFIAPI *clear_screen) (
  			struct efi_simple_text_output_protocol *this);
  	efi_status_t(EFIAPI *set_cursor_position) (
  			struct efi_simple_text_output_protocol *this,
  			unsigned long column, unsigned long row);

  	efi_status_t(EFIAPI *enable_cursor)(
  			struct efi_simple_text_output_protocol *this,
  			bool enable);

  	struct simple_text_output_mode *mode;
  };

  #define EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL_GUID \
  	EFI_GUID(0xdd9e7534, 0x7762, 0x4698, \
  		 0x8c, 0x14, 0xf5, 0x85, 0x17, 0xa6, 0x25, 0xaa)

  struct efi_input_key {
  	u16 scan_code;
  	s16 unicode_char;
  };

  #define EFI_SHIFT_STATE_INVALID		0x00000000
  #define EFI_RIGHT_SHIFT_PRESSED		0x00000001
  #define EFI_LEFT_SHIFT_PRESSED		0x00000002
  #define EFI_RIGHT_CONTROL_PRESSED	0x00000004
  #define EFI_LEFT_CONTROL_PRESSED	0x00000008
  #define EFI_RIGHT_ALT_PRESSED		0x00000010
  #define EFI_LEFT_ALT_PRESSED		0x00000020
  #define EFI_RIGHT_LOGO_PRESSED		0x00000040
  #define EFI_LEFT_LOGO_PRESSED		0x00000080
  #define EFI_MENU_KEY_PRESSED		0x00000100
  #define EFI_SYS_REQ_PRESSED		0x00000200
  #define EFI_SHIFT_STATE_VALID		0x80000000
  
  #define EFI_TOGGLE_STATE_INVALID	0x00
  #define EFI_SCROLL_LOCK_ACTIVE		0x01
  #define EFI_NUM_LOCK_ACTIVE		0x02
  #define EFI_CAPS_LOCK_ACTIVE		0x04
  #define EFI_KEY_STATE_EXPOSED		0x40
  #define EFI_TOGGLE_STATE_VALID		0x80
  
  struct efi_key_state {
  	u32 key_shift_state;
  	u8 key_toggle_state;
  };
  
  struct efi_key_data {
  	struct efi_input_key key;
  	struct efi_key_state key_state;
  };
  
  struct efi_simple_text_input_ex_protocol {
  	efi_status_t (EFIAPI *reset) (
  		struct efi_simple_text_input_ex_protocol *this,
  		bool extended_verification);
  	efi_status_t (EFIAPI *read_key_stroke_ex) (
  		struct efi_simple_text_input_ex_protocol *this,
  		struct efi_key_data *key_data);
  	struct efi_event *wait_for_key_ex;
  	efi_status_t (EFIAPI *set_state) (
  		struct efi_simple_text_input_ex_protocol *this,

  		u8 *key_toggle_state);

  	efi_status_t (EFIAPI *register_key_notify) (
  		struct efi_simple_text_input_ex_protocol *this,
  		struct efi_key_data *key_data,
  		efi_status_t (EFIAPI *key_notify_function)(
  			struct efi_key_data *key_data),
  		void **notify_handle);
  	efi_status_t (EFIAPI *unregister_key_notify) (
  		struct efi_simple_text_input_ex_protocol *this,
  		void *notification_handle);
  };

  #define EFI_SIMPLE_TEXT_INPUT_PROTOCOL_GUID \
  	EFI_GUID(0x387477c1, 0x69c7, 0x11d2, \
  		 0x8e, 0x39, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b)

  struct efi_simple_text_input_protocol {
  	efi_status_t(EFIAPI *reset)(struct efi_simple_text_input_protocol *this,
  				    bool extended_verification);

  	efi_status_t(EFIAPI *read_key_stroke)(

  			struct efi_simple_text_input_protocol *this,

  			struct efi_input_key *key);

  	struct efi_event *wait_for_key;

  };

  #define EFI_DEVICE_PATH_TO_TEXT_PROTOCOL_GUID \
  	EFI_GUID(0x8b843e20, 0x8132, 0x4852, \
  		 0x90, 0xcc, 0x55, 0x1a, 0x4e, 0x4a, 0x7f, 0x1c)

  struct efi_device_path_to_text_protocol {

  	uint16_t *(EFIAPI *convert_device_node_to_text)(

  			struct efi_device_path *device_node,

  			bool display_only,
  			bool allow_shortcuts);
  	uint16_t *(EFIAPI *convert_device_path_to_text)(

  			struct efi_device_path *device_path,

  			bool display_only,
  			bool allow_shortcuts);
  };

  #define EFI_DEVICE_PATH_UTILITIES_PROTOCOL_GUID \
  	EFI_GUID(0x0379be4e, 0xd706, 0x437d, \
  		 0xb0, 0x37, 0xed, 0xb8, 0x2f, 0xb7, 0x72, 0xa4)
  
  struct efi_device_path_utilities_protocol {
  	efi_uintn_t (EFIAPI *get_device_path_size)(
  		const struct efi_device_path *device_path);
  	struct efi_device_path *(EFIAPI *duplicate_device_path)(
  		const struct efi_device_path *device_path);
  	struct efi_device_path *(EFIAPI *append_device_path)(
  		const struct efi_device_path *src1,
  		const struct efi_device_path *src2);
  	struct efi_device_path *(EFIAPI *append_device_node)(
  		const struct efi_device_path *device_path,
  		const struct efi_device_path *device_node);
  	struct efi_device_path *(EFIAPI *append_device_path_instance)(
  		const struct efi_device_path *device_path,
  		const struct efi_device_path *device_path_instance);
  	struct efi_device_path *(EFIAPI *get_next_device_path_instance)(
  		struct efi_device_path **device_path_instance,
  		efi_uintn_t *device_path_instance_size);
  	bool (EFIAPI *is_device_path_multi_instance)(
  		const struct efi_device_path *device_path);
  	struct efi_device_path *(EFIAPI *create_device_node)(
  		uint8_t node_type,
  		uint8_t node_sub_type,
  		uint16_t node_length);
  };

  /*
   * Human Interface Infrastructure (HII)
   */
  struct efi_hii_package_list_header {
  	efi_guid_t package_list_guid;
  	u32 package_length;
  } __packed;
  
  /**
   * struct efi_hii_package_header - EFI HII package header
   *
   * @fields:	'fields' replaces the bit-fields defined in the EFI
   *		specification to to avoid possible compiler incompatibilities::
   *
   *		u32 length:24;
   *		u32 type:8;
   */
  struct efi_hii_package_header {
  	u32 fields;
  } __packed;
  
  #define __EFI_HII_PACKAGE_LEN_SHIFT	0
  #define __EFI_HII_PACKAGE_TYPE_SHIFT	24
  #define __EFI_HII_PACKAGE_LEN_MASK	0xffffff
  #define __EFI_HII_PACKAGE_TYPE_MASK	0xff
  
  #define EFI_HII_PACKAGE_TYPE_ALL          0x00
  #define EFI_HII_PACKAGE_TYPE_GUID         0x01
  #define EFI_HII_PACKAGE_FORMS             0x02
  #define EFI_HII_PACKAGE_STRINGS           0x04
  #define EFI_HII_PACKAGE_FONTS             0x05
  #define EFI_HII_PACKAGE_IMAGES            0x06
  #define EFI_HII_PACKAGE_SIMPLE_FONTS      0x07
  #define EFI_HII_PACKAGE_DEVICE_PATH       0x08
  #define EFI_HII_PACKAGE_KEYBOARD_LAYOUT   0x09
  #define EFI_HII_PACKAGE_ANIMATIONS        0x0A
  #define EFI_HII_PACKAGE_END               0xDF
  #define EFI_HII_PACKAGE_TYPE_SYSTEM_BEGIN 0xE0
  #define EFI_HII_PACKAGE_TYPE_SYSTEM_END   0xFF
  
  /*

   * HII GUID package
   */
  struct efi_hii_guid_package {
  	struct efi_hii_package_header header;
  	efi_guid_t guid;
  	char data[];
  } __packed;
  
  /*

   * HII string package
   */
  struct efi_hii_strings_package {
  	struct efi_hii_package_header header;
  	u32 header_size;
  	u32 string_info_offset;
  	u16 language_window[16];
  	efi_string_id_t language_name;
  	u8  language[];
  } __packed;
  
  struct efi_hii_string_block {
  	u8 block_type;
  	/* u8 block_body[]; */
  } __packed;
  
  #define EFI_HII_SIBT_END               0x00
  #define EFI_HII_SIBT_STRING_SCSU       0x10
  #define EFI_HII_SIBT_STRING_SCSU_FONT  0x11
  #define EFI_HII_SIBT_STRINGS_SCSU      0x12
  #define EFI_HII_SIBT_STRINGS_SCSU_FONT 0x13
  #define EFI_HII_SIBT_STRING_UCS2       0x14
  #define EFI_HII_SIBT_STRING_UCS2_FONT  0x15
  #define EFI_HII_SIBT_STRINGS_UCS2      0x16
  #define EFI_HII_SIBT_STRINGS_UCS2_FONT 0x17
  #define EFI_HII_SIBT_DUPLICATE         0x20
  #define EFI_HII_SIBT_SKIP2             0x21
  #define EFI_HII_SIBT_SKIP1             0x22
  #define EFI_HII_SIBT_EXT1              0x30
  #define EFI_HII_SIBT_EXT2              0x31
  #define EFI_HII_SIBT_EXT4              0x32
  #define EFI_HII_SIBT_FONT              0x40
  
  struct efi_hii_sibt_string_ucs2_block {
  	struct efi_hii_string_block header;
  	u16 string_text[];
  } __packed;
  
  static inline struct efi_hii_string_block *
  efi_hii_sibt_string_ucs2_block_next(struct efi_hii_sibt_string_ucs2_block *blk)
  {
  	return ((void *)blk) + sizeof(*blk) +
  		(u16_strlen(blk->string_text) + 1) * 2;
  }
  
  /*

   * HII forms package
   * TODO: full scope of definitions
   */
  struct efi_hii_time {
  	u8 hour;
  	u8 minute;
  	u8 second;
  };
  
  struct efi_hii_date {
  	u16 year;
  	u8 month;
  	u8 day;
  };
  
  struct efi_hii_ref {
  	efi_question_id_t question_id;
  	efi_form_id_t form_id;
  	efi_guid_t form_set_guid;
  	efi_string_id_t device_path;
  };
  
  union efi_ifr_type_value {
  	u8 u8;				// EFI_IFR_TYPE_NUM_SIZE_8
  	u16 u16;			// EFI_IFR_TYPE_NUM_SIZE_16
  	u32 u32;			// EFI_IFR_TYPE_NUM_SIZE_32
  	u64 u64;			// EFI_IFR_TYPE_NUM_SIZE_64
  	bool b;				// EFI_IFR_TYPE_BOOLEAN
  	struct efi_hii_time time;	// EFI_IFR_TYPE_TIME
  	struct efi_hii_date date;	// EFI_IFR_TYPE_DATE
  	efi_string_id_t string;	// EFI_IFR_TYPE_STRING, EFI_IFR_TYPE_ACTION
  	struct efi_hii_ref ref;		// EFI_IFR_TYPE_REF
  	// u8 buffer[];			// EFI_IFR_TYPE_BUFFER
  };
  
  #define EFI_IFR_TYPE_NUM_SIZE_8		0x00
  #define EFI_IFR_TYPE_NUM_SIZE_16	0x01
  #define EFI_IFR_TYPE_NUM_SIZE_32	0x02
  #define EFI_IFR_TYPE_NUM_SIZE_64	0x03
  #define EFI_IFR_TYPE_BOOLEAN		0x04
  #define EFI_IFR_TYPE_TIME		0x05
  #define EFI_IFR_TYPE_DATE		0x06
  #define EFI_IFR_TYPE_STRING		0x07
  #define EFI_IFR_TYPE_OTHER		0x08
  #define EFI_IFR_TYPE_UNDEFINED		0x09
  #define EFI_IFR_TYPE_ACTION		0x0A
  #define EFI_IFR_TYPE_BUFFER		0x0B
  #define EFI_IFR_TYPE_REF		0x0C
  #define EFI_IFR_OPTION_DEFAULT		0x10
  #define EFI_IFR_OPTION_DEFAULT_MFG	0x20
  
  #define EFI_IFR_ONE_OF_OPTION_OP	0x09
  
  struct efi_ifr_op_header {
  	u8 opCode;
  	u8 length:7;
  	u8 scope:1;
  };
  
  struct efi_ifr_one_of_option {
  	struct efi_ifr_op_header header;
  	efi_string_id_t option;
  	u8 flags;
  	u8 type;
  	union efi_ifr_type_value value;
  };
  
  typedef efi_uintn_t efi_browser_action_t;
  
  #define EFI_BROWSER_ACTION_REQUEST_NONE			0
  #define EFI_BROWSER_ACTION_REQUEST_RESET		1
  #define EFI_BROWSER_ACTION_REQUEST_SUBMIT		2
  #define EFI_BROWSER_ACTION_REQUEST_EXIT			3
  #define EFI_BROWSER_ACTION_REQUEST_FORM_SUBMIT_EXIT	4
  #define EFI_BROWSER_ACTION_REQUEST_FORM_DISCARD_EXIT	5
  #define EFI_BROWSER_ACTION_REQUEST_FORM_APPLY		6
  #define EFI_BROWSER_ACTION_REQUEST_FORM_DISCARD		7
  #define EFI_BROWSER_ACTION_REQUEST_RECONNECT		8
  
  typedef efi_uintn_t efi_browser_action_request_t;
  
  #define EFI_BROWSER_ACTION_CHANGING			0
  #define EFI_BROWSER_ACTION_CHANGED			1
  #define EFI_BROWSER_ACTION_RETRIEVE			2
  #define EFI_BROWSER_ACTION_FORM_OPEN			3
  #define EFI_BROWSER_ACTION_FORM_CLOSE			4
  #define EFI_BROWSER_ACTION_SUBMITTED			5
  #define EFI_BROWSER_ACTION_DEFAULT_STANDARD		0x1000
  #define EFI_BROWSER_ACTION_DEFAULT_MANUFACTURING	0x1001
  #define EFI_BROWSER_ACTION_DEFAULT_SAFE			0x1002
  #define EFI_BROWSER_ACTION_DEFAULT_PLATFORM		0x2000
  #define EFI_BROWSER_ACTION_DEFAULT_HARDWARE		0x3000
  #define EFI_BROWSER_ACTION_DEFAULT_FIRMWARE		0x4000
  
  /*

   * HII keyboard package
   */
  typedef enum {
  	EFI_KEY_LCTRL, EFI_KEY_A0, EFI_KEY_LALT, EFI_KEY_SPACE_BAR,
  	EFI_KEY_A2, EFI_KEY_A3, EFI_KEY_A4, EFI_KEY_RCTRL, EFI_KEY_LEFT_ARROW,
  	EFI_KEY_DOWN_ARROW, EFI_KEY_RIGHT_ARROW, EFI_KEY_ZERO,
  	EFI_KEY_PERIOD, EFI_KEY_ENTER, EFI_KEY_LSHIFT, EFI_KEY_B0,
  	EFI_KEY_B1, EFI_KEY_B2, EFI_KEY_B3, EFI_KEY_B4, EFI_KEY_B5, EFI_KEY_B6,
  	EFI_KEY_B7, EFI_KEY_B8, EFI_KEY_B9, EFI_KEY_B10, EFI_KEY_RSHIFT,
  	EFI_KEY_UP_ARROW, EFI_KEY_ONE, EFI_KEY_TWO, EFI_KEY_THREE,
  	EFI_KEY_CAPS_LOCK, EFI_KEY_C1, EFI_KEY_C2, EFI_KEY_C3, EFI_KEY_C4,
  	EFI_KEY_C5, EFI_KEY_C6, EFI_KEY_C7, EFI_KEY_C8, EFI_KEY_C9,
  	EFI_KEY_C10, EFI_KEY_C11, EFI_KEY_C12, EFI_KEY_FOUR, EFI_KEY_FIVE,
  	EFI_KEY_SIX, EFI_KEY_PLUS, EFI_KEY_TAB, EFI_KEY_D1, EFI_KEY_D2,
  	EFI_KEY_D3, EFI_KEY_D4, EFI_KEY_D5, EFI_KEY_D6, EFI_KEY_D7, EFI_KEY_D8,
  	EFI_KEY_D9, EFI_KEY_D10, EFI_KEY_D11, EFI_KEY_D12, EFI_KEY_D13,
  	EFI_KEY_DEL, EFI_KEY_END, EFI_KEY_PG_DN, EFI_KEY_SEVEN, EFI_KEY_EIGHT,
  	EFI_KEY_NINE, EFI_KEY_E0, EFI_KEY_E1, EFI_KEY_E2, EFI_KEY_E3,
  	EFI_KEY_E4, EFI_KEY_E5, EFI_KEY_E6, EFI_KEY_E7, EFI_KEY_E8, EFI_KEY_E9,
  	EFI_KEY_E10, EFI_KEY_E11, EFI_KEY_E12, EFI_KEY_BACK_SPACE,
  	EFI_KEY_INS, EFI_KEY_HOME, EFI_KEY_PG_UP, EFI_KEY_NLCK, EFI_KEY_SLASH,
  	EFI_KEY_ASTERISK, EFI_KEY_MINUS, EFI_KEY_ESC, EFI_KEY_F1, EFI_KEY_F2,
  	EFI_KEY_F3, EFI_KEY_F4, EFI_KEY_F5, EFI_KEY_F6, EFI_KEY_F7, EFI_KEY_F8,
  	EFI_KEY_F9, EFI_KEY_F10, EFI_KEY_F11, EFI_KEY_F12, EFI_KEY_PRINT,
  	EFI_KEY_SLCK, EFI_KEY_PAUSE,
  } efi_key;
  
  struct efi_key_descriptor {
  	u32 key;
  	u16 unicode;
  	u16 shifted_unicode;
  	u16 alt_gr_unicode;
  	u16 shifted_alt_gr_unicode;
  	u16 modifier;
  	u16 affected_attribute;
  } __packed;
  
  struct efi_hii_keyboard_layout {
  	u16 layout_length;
  	efi_guid_t guid;
  	u32 layout_descriptor_string_offset;
  	u8 descriptor_count;
  	struct efi_key_descriptor descriptors[];
  } __packed;

  struct efi_hii_keyboard_package {
  	struct efi_hii_package_header header;
  	u16 layout_count;
  	struct efi_hii_keyboard_layout layout[];
  } __packed;

  /*
   * HII protocols
   */
  #define EFI_HII_STRING_PROTOCOL_GUID \
  	EFI_GUID(0x0fd96974, 0x23aa, 0x4cdc, \
  		 0xb9, 0xcb, 0x98, 0xd1, 0x77, 0x50, 0x32, 0x2a)
  
  struct efi_font_info {
  	efi_hii_font_style_t font_style;
  	u16 font_size;
  	u16 font_name[1];
  };
  
  struct efi_hii_string_protocol {
  	efi_status_t(EFIAPI *new_string)(
  		const struct efi_hii_string_protocol *this,
  		efi_hii_handle_t package_list,
  		efi_string_id_t *string_id,
  		const u8 *language,
  		const u16 *language_name,
  		const efi_string_t string,
  		const struct efi_font_info *string_font_info);
  	efi_status_t(EFIAPI *get_string)(
  		const struct efi_hii_string_protocol *this,
  		const u8 *language,
  		efi_hii_handle_t package_list,
  		efi_string_id_t string_id,
  		efi_string_t string,
  		efi_uintn_t *string_size,
  		struct efi_font_info **string_font_info);
  	efi_status_t(EFIAPI *set_string)(
  		const struct efi_hii_string_protocol *this,
  		efi_hii_handle_t package_list,
  		efi_string_id_t string_id,
  		const u8 *language,
  		const efi_string_t string,
  		const struct efi_font_info *string_font_info);
  	efi_status_t(EFIAPI *get_languages)(
  		const struct efi_hii_string_protocol *this,
  		efi_hii_handle_t package_list,
  		u8 *languages,
  		efi_uintn_t *languages_size);
  	efi_status_t(EFIAPI *get_secondary_languages)(
  		const struct efi_hii_string_protocol *this,
  		efi_hii_handle_t package_list,
  		const u8 *primary_language,
  		u8 *secondary_languages,
  		efi_uintn_t *secondary_languages_size);
  };
  
  #define EFI_HII_DATABASE_PROTOCOL_GUID	     \
  	EFI_GUID(0xef9fc172, 0xa1b2, 0x4693, \
  		 0xb3, 0x27, 0x6d, 0x32, 0xfc, 0x41, 0x60, 0x42)
  
  struct efi_hii_database_protocol {
  	efi_status_t(EFIAPI *new_package_list)(
  		const struct efi_hii_database_protocol *this,
  		const struct efi_hii_package_list_header *package_list,
  		const efi_handle_t driver_handle,
  		efi_hii_handle_t *handle);
  	efi_status_t(EFIAPI *remove_package_list)(
  		const struct efi_hii_database_protocol *this,
  		efi_hii_handle_t handle);
  	efi_status_t(EFIAPI *update_package_list)(
  		const struct efi_hii_database_protocol *this,
  		efi_hii_handle_t handle,
  		const struct efi_hii_package_list_header *package_list);
  	efi_status_t(EFIAPI *list_package_lists)(
  		const struct efi_hii_database_protocol *this,
  		u8 package_type,
  		const efi_guid_t *package_guid,
  		efi_uintn_t *handle_buffer_length,
  		efi_hii_handle_t *handle);
  	efi_status_t(EFIAPI *export_package_lists)(
  		const struct efi_hii_database_protocol *this,
  		efi_hii_handle_t handle,
  		efi_uintn_t *buffer_size,
  		struct efi_hii_package_list_header *buffer);
  	efi_status_t(EFIAPI *register_package_notify)(
  		const struct efi_hii_database_protocol *this,
  		u8 package_type,
  		const efi_guid_t *package_guid,
  		const void *package_notify_fn,
  		efi_uintn_t notify_type,
  		efi_handle_t *notify_handle);
  	efi_status_t(EFIAPI *unregister_package_notify)(
  		const struct efi_hii_database_protocol *this,
  		efi_handle_t notification_handle
  		);
  	efi_status_t(EFIAPI *find_keyboard_layouts)(
  		const struct efi_hii_database_protocol *this,
  		u16 *key_guid_buffer_length,
  		efi_guid_t *key_guid_buffer);
  	efi_status_t(EFIAPI *get_keyboard_layout)(
  		const struct efi_hii_database_protocol *this,
  		efi_guid_t *key_guid,
  		u16 *keyboard_layout_length,
  		struct efi_hii_keyboard_layout *keyboard_layout);
  	efi_status_t(EFIAPI *set_keyboard_layout)(
  		const struct efi_hii_database_protocol *this,
  		efi_guid_t *key_guid);
  	efi_status_t(EFIAPI *get_package_list_handle)(
  		const struct efi_hii_database_protocol *this,
  		efi_hii_handle_t package_list_handle,
  		efi_handle_t *driver_handle);
  };

  #define EFI_HII_CONFIG_ROUTING_PROTOCOL_GUID \
  	EFI_GUID(0x587e72d7, 0xcc50, 0x4f79, \
  		 0x82, 0x09, 0xca, 0x29, 0x1f, 0xc1, 0xa1, 0x0f)
  
  struct efi_hii_config_routing_protocol {
  	efi_status_t(EFIAPI *extract_config)(
  		const struct efi_hii_config_routing_protocol *this,
  		const efi_string_t request,
  		efi_string_t *progress,
  		efi_string_t *results);
  	efi_status_t(EFIAPI *export_config)(
  		const struct efi_hii_config_routing_protocol *this,
  		efi_string_t *results);
  	efi_status_t(EFIAPI *route_config)(
  		const struct efi_hii_config_routing_protocol *this,
  		const efi_string_t configuration,
  		efi_string_t *progress);
  	efi_status_t(EFIAPI *block_to_config)(
  		const struct efi_hii_config_routing_protocol *this,
  		const efi_string_t config_request,
  		const uint8_t *block,
  		const efi_uintn_t block_size,
  		efi_string_t *config,
  		efi_string_t *progress);
  	efi_status_t(EFIAPI *config_to_block)(
  		const struct efi_hii_config_routing_protocol *this,
  		const efi_string_t config_resp,
  		const uint8_t *block,
  		const efi_uintn_t *block_size,
  		efi_string_t *progress);
  	efi_status_t(EFIAPI *get_alt_config)(
  		const struct efi_hii_config_routing_protocol *this,
  		const efi_string_t config_resp,
  		const efi_guid_t *guid,
  		const efi_string_t name,
  		const struct efi_device_path *device_path,
  		const efi_string_t alt_cfg_id,
  		efi_string_t *alt_cfg_resp);
  };
  
  #define EFI_HII_CONFIG_ACCESS_PROTOCOL_GUID \
  	EFI_GUID(0x330d4706, 0xf2a0, 0x4e4f, \
  		 0xa3, 0x69, 0xb6, 0x6f, 0xa8, 0xd5, 0x43, 0x85)
  
  struct efi_hii_config_access_protocol {
  	efi_status_t(EFIAPI *extract_config_access)(
  		const struct efi_hii_config_access_protocol *this,
  		const efi_string_t request,
  		efi_string_t *progress,
  		efi_string_t *results);
  	efi_status_t(EFIAPI *route_config_access)(
  		const struct efi_hii_config_access_protocol *this,
  		const efi_string_t configuration,
  		efi_string_t *progress);
  	efi_status_t(EFIAPI *form_callback)(
  		const struct efi_hii_config_access_protocol *this,
  		efi_browser_action_t action,
  		efi_question_id_t question_id,
  		u8 type,
  		union efi_ifr_type_value *value,
  		efi_browser_action_request_t *action_request);
  };

  #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \

  	EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, \
  		 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a)
  
  #define EFI_GOT_RGBA8		0
  #define EFI_GOT_BGRA8		1
  #define EFI_GOT_BITMASK		2

  struct efi_gop_mode_info {

  	u32 version;
  	u32 width;
  	u32 height;
  	u32 pixel_format;
  	u32 pixel_bitmask[4];
  	u32 pixels_per_scanline;
  };

  struct efi_gop_mode {

  	u32 max_mode;
  	u32 mode;
  	struct efi_gop_mode_info *info;
  	unsigned long info_size;
  	efi_physical_addr_t fb_base;
  	unsigned long fb_size;
  };

  struct efi_gop_pixel {
  	u8 blue;
  	u8 green;
  	u8 red;
  	u8 reserved;
  };

  #define EFI_BLT_VIDEO_FILL		0
  #define EFI_BLT_VIDEO_TO_BLT_BUFFER	1
  #define EFI_BLT_BUFFER_TO_VIDEO		2
  #define EFI_BLT_VIDEO_TO_VIDEO		3

  struct efi_gop {

  	efi_status_t (EFIAPI *query_mode)(struct efi_gop *this, u32 mode_number,

  					  efi_uintn_t *size_of_info,

  					  struct efi_gop_mode_info **info);
  	efi_status_t (EFIAPI *set_mode)(struct efi_gop *this, u32 mode_number);

  	efi_status_t (EFIAPI *blt)(struct efi_gop *this,
  				   struct efi_gop_pixel *buffer,

  				   u32 operation, efi_uintn_t sx,
  				   efi_uintn_t sy, efi_uintn_t dx,
  				   efi_uintn_t dy, efi_uintn_t width,
  				   efi_uintn_t height, efi_uintn_t delta);

  	struct efi_gop_mode *mode;
  };

  #define EFI_SIMPLE_NETWORK_PROTOCOL_GUID \

  	EFI_GUID(0xa19832b9, 0xac25, 0x11d3, \
  		 0x9a, 0x2d, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
  
  struct efi_mac_address {
  	char mac_addr[32];
  };
  
  struct efi_ip_address {
  	u8 ip_addr[16];

  } __attribute__((aligned(4)));

  
  enum efi_simple_network_state {
  	EFI_NETWORK_STOPPED,
  	EFI_NETWORK_STARTED,
  	EFI_NETWORK_INITIALIZED,
  };
  
  struct efi_simple_network_mode {
  	enum efi_simple_network_state state;
  	u32 hwaddr_size;
  	u32 media_header_size;
  	u32 max_packet_size;
  	u32 nvram_size;
  	u32 nvram_access_size;
  	u32 receive_filter_mask;
  	u32 receive_filter_setting;
  	u32 max_mcast_filter_count;
  	u32 mcast_filter_count;
  	struct efi_mac_address mcast_filter[16];
  	struct efi_mac_address current_address;
  	struct efi_mac_address broadcast_address;
  	struct efi_mac_address permanent_address;
  	u8 if_type;
  	u8 mac_changeable;
  	u8 multitx_supported;
  	u8 media_present_supported;
  	u8 media_present;
  };

  /* receive_filters bit mask */
  #define EFI_SIMPLE_NETWORK_RECEIVE_UNICAST               0x01
  #define EFI_SIMPLE_NETWORK_RECEIVE_MULTICAST             0x02
  #define EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST             0x04
  #define EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS           0x08
  #define EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS_MULTICAST 0x10

  /* interrupt status bit mask */
  #define EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT	0x01
  #define EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT	0x02
  #define EFI_SIMPLE_NETWORK_COMMAND_INTERRUPT	0x04
  #define EFI_SIMPLE_NETWORK_SOFTWARE_INTERRUPT	0x08

  /* revision of the simple network protocol */
  #define EFI_SIMPLE_NETWORK_PROTOCOL_REVISION	0x00010000

  struct efi_simple_network {

  	u64 revision;
  	efi_status_t (EFIAPI *start)(struct efi_simple_network *this);
  	efi_status_t (EFIAPI *stop)(struct efi_simple_network *this);
  	efi_status_t (EFIAPI *initialize)(struct efi_simple_network *this,
  			ulong extra_rx, ulong extra_tx);
  	efi_status_t (EFIAPI *reset)(struct efi_simple_network *this,
  			int extended_verification);
  	efi_status_t (EFIAPI *shutdown)(struct efi_simple_network *this);
  	efi_status_t (EFIAPI *receive_filters)(struct efi_simple_network *this,
  			u32 enable, u32 disable, int reset_mcast_filter,
  			ulong mcast_filter_count,
  			struct efi_mac_address *mcast_filter);
  	efi_status_t (EFIAPI *station_address)(struct efi_simple_network *this,
  			int reset, struct efi_mac_address *new_mac);
  	efi_status_t (EFIAPI *statistics)(struct efi_simple_network *this,
  			int reset, ulong *stat_size, void *stat_table);
  	efi_status_t (EFIAPI *mcastiptomac)(struct efi_simple_network *this,
  			int ipv6, struct efi_ip_address *ip,
  			struct efi_mac_address *mac);
  	efi_status_t (EFIAPI *nvdata)(struct efi_simple_network *this,
  			int read_write, ulong offset, ulong buffer_size,
  			char *buffer);
  	efi_status_t (EFIAPI *get_status)(struct efi_simple_network *this,
  			u32 *int_status, void **txbuf);
  	efi_status_t (EFIAPI *transmit)(struct efi_simple_network *this,

  			size_t header_size, size_t buffer_size, void *buffer,

  			struct efi_mac_address *src_addr,
  			struct efi_mac_address *dest_addr, u16 *protocol);
  	efi_status_t (EFIAPI *receive)(struct efi_simple_network *this,

  			size_t *header_size, size_t *buffer_size, void *buffer,

  			struct efi_mac_address *src_addr,
  			struct efi_mac_address *dest_addr, u16 *protocol);

  	struct efi_event *wait_for_packet;

  	struct efi_simple_network_mode *mode;

  	/* private fields */
  	u32 int_status;

  };

  #define EFI_PXE_BASE_CODE_PROTOCOL_GUID \

  	EFI_GUID(0x03c4e603, 0xac28, 0x11d3, \
  		 0x9a, 0x2d, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)

  #define EFI_PXE_BASE_CODE_PROTOCOL_REVISION 0x00010000
  #define EFI_PXE_BASE_CODE_MAX_IPCNT 8

  struct efi_pxe_packet {
  	u8 packet[1472];
  };

  struct efi_pxe_mode {

  	u8 started;
  	u8 ipv6_available;
  	u8 ipv6_supported;
  	u8 using_ipv6;
  	u8 bis_supported;
  	u8 bis_detected;
  	u8 auto_arp;
  	u8 send_guid;
  	u8 dhcp_discover_valid;
  	u8 dhcp_ack_received;
  	u8 proxy_offer_received;
  	u8 pxe_discover_valid;
  	u8 pxe_reply_received;
  	u8 pxe_bis_reply_received;
  	u8 icmp_error_received;
  	u8 tftp_error_received;
  	u8 make_callbacks;
  	u8 ttl;
  	u8 tos;
  	u8 pad;
  	struct efi_ip_address station_ip;
  	struct efi_ip_address subnet_mask;

  	struct efi_pxe_packet dhcp_discover;
  	struct efi_pxe_packet dhcp_ack;
  	struct efi_pxe_packet proxy_offer;
  	struct efi_pxe_packet pxe_discover;
  	struct efi_pxe_packet pxe_reply;
  };

  struct efi_pxe_base_code_srvlist {
  	u16 type;
  	u8 accept_any_response;
  	u8 reserved;
  	struct efi_ip_address ip_addr;
  };
  
  struct efi_pxe_base_code_discover_info {
  	u8 use_m_cast;
  	u8 use_b_cast;
  	u8 use_u_cast;
  	u8 must_use_list;
  	struct efi_ip_address server_m_cast_ip;
  	u16 ip_cnt;
  	struct efi_pxe_base_code_srvlist srv_list[];
  };
  
  struct efi_pxe_base_code_mtftp_info {
  	struct efi_ip_address m_cast_ip;
  	u16 cport;
  	u16 sport;
  	u16 listen_timeout;
  	u16 transit_timeout;
  };
  
  struct efi_pxe_base_code_filter {
  	u8 filters;
  	u8 ip_cnt;
  	u16 reserved;
  	struct efi_ip_address ip_list[EFI_PXE_BASE_CODE_MAX_IPCNT];
  };
  
  struct efi_pxe_base_code_dhcpv4_packet {
  	u8 bootp_op_code;
  	u8 bootp_hw_type;
  	u8 bootp_addr_len;
  	u8 bootp_gate_hops;
  	u32 bootp_ident;
  	u16 bootp_seconds;
  	u16 bootp_flags;
  	u8 bootp_ci_addr[4];
  	u8 bootp_yi_addr[4];
  	u8 bootp_si_addr[4];
  	u8 bootp_gi_addr[4];
  	u8 bootp_hw_addr[16];
  	u8 bootp_srv_name[64];
  	u8 bootp_boot_file[128];
  	u32 dhcp_magick;
  	u8 dhcp_options[56];
  };
  
  struct efi_pxe_base_code_dhcpv6_packet {
  	u8 message_type;
  	u8 transaction_id[3];
  	u8 dhcp_options[1024];
  };
  
  typedef union {
  	u8 raw[1472];
  	struct efi_pxe_base_code_dhcpv4_packet dhcpv4;
  	struct efi_pxe_base_code_dhcpv6_packet dhcpv6;
  } EFI_PXE_BASE_CODE_PACKET;
  
  struct efi_pxe_base_code_protocol {
  	u64 revision;
  	efi_status_t (EFIAPI *start)(struct efi_pxe_base_code_protocol *this,
  				     u8 use_ipv6);
  	efi_status_t (EFIAPI *stop)(struct efi_pxe_base_code_protocol *this);
  	efi_status_t (EFIAPI *dhcp)(struct efi_pxe_base_code_protocol *this,
  				    u8 sort_offers);
  	efi_status_t (EFIAPI *discover)(
  				struct efi_pxe_base_code_protocol *this,
  				u16 type, u16 *layer, u8 bis,
  				struct efi_pxe_base_code_discover_info *info);
  	efi_status_t (EFIAPI *mtftp)(
  				struct efi_pxe_base_code_protocol *this,
  				u32 operation, void *buffer_ptr,
  				u8 overwrite, efi_uintn_t *buffer_size,
  				struct efi_ip_address server_ip, char *filename,
  				struct efi_pxe_base_code_mtftp_info *info,
  				u8 dont_use_buffer);
  	efi_status_t (EFIAPI *udp_write)(
  				struct efi_pxe_base_code_protocol *this,
  				u16 op_flags, struct efi_ip_address *dest_ip,
  				u16 *dest_port,
  				struct efi_ip_address *gateway_ip,
  				struct efi_ip_address *src_ip, u16 *src_port,
  				efi_uintn_t *header_size, void *header_ptr,
  				efi_uintn_t *buffer_size, void *buffer_ptr);
  	efi_status_t (EFIAPI *udp_read)(
  				struct efi_pxe_base_code_protocol *this,
  				u16 op_flags, struct efi_ip_address *dest_ip,
  				u16 *dest_port, struct efi_ip_address *src_ip,
  				u16 *src_port, efi_uintn_t *header_size,
  				void *header_ptr, efi_uintn_t *buffer_size,
  				void *buffer_ptr);
  	efi_status_t (EFIAPI *set_ip_filter)(
  				struct efi_pxe_base_code_protocol *this,
  				struct efi_pxe_base_code_filter *new_filter);
  	efi_status_t (EFIAPI *arp)(struct efi_pxe_base_code_protocol *this,
  				   struct efi_ip_address *ip_addr,
  				   struct efi_mac_address *mac_addr);
  	efi_status_t (EFIAPI *set_parameters)(
  				struct efi_pxe_base_code_protocol *this,
  				u8 *new_auto_arp, u8 *new_send_guid,
  				u8 *new_ttl, u8 *new_tos,
  				u8 *new_make_callback);
  	efi_status_t (EFIAPI *set_station_ip)(
  				struct efi_pxe_base_code_protocol *this,
  				struct efi_ip_address *new_station_ip,
  				struct efi_ip_address *new_subnet_mask);
  	efi_status_t (EFIAPI *set_packets)(
  				struct efi_pxe_base_code_protocol *this,
  				u8 *new_dhcp_discover_valid,
  				u8 *new_dhcp_ack_received,
  				u8 *new_proxy_offer_received,
  				u8 *new_pxe_discover_valid,
  				u8 *new_pxe_reply_received,
  				u8 *new_pxe_bis_reply_received,
  				EFI_PXE_BASE_CODE_PACKET *new_dchp_discover,
  				EFI_PXE_BASE_CODE_PACKET *new_dhcp_acc,
  				EFI_PXE_BASE_CODE_PACKET *new_proxy_offer,
  				EFI_PXE_BASE_CODE_PACKET *new_pxe_discover,
  				EFI_PXE_BASE_CODE_PACKET *new_pxe_reply,
  				EFI_PXE_BASE_CODE_PACKET *new_pxe_bis_reply);

  	struct efi_pxe_mode *mode;
  };

  #define EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID \
  	EFI_GUID(0x964e5b22, 0x6459, 0x11d2, \
  		 0x8e, 0x39, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b)

  #define EFI_FILE_PROTOCOL_REVISION	0x00010000
  #define EFI_FILE_PROTOCOL_REVISION2	0x00020000
  #define EFI_FILE_PROTOCOL_LATEST_REVISION EFI_FILE_PROTOCOL_REVISION2

  struct efi_file_io_token {
  	struct efi_event *event;
  	efi_status_t status;
  	efi_uintn_t buffer_size;
  	void *buffer;};

  struct efi_file_handle {
  	u64 rev;
  	efi_status_t (EFIAPI *open)(struct efi_file_handle *file,
  			struct efi_file_handle **new_handle,

  			u16 *file_name, u64 open_mode, u64 attributes);

  	efi_status_t (EFIAPI *close)(struct efi_file_handle *file);
  	efi_status_t (EFIAPI *delete)(struct efi_file_handle *file);
  	efi_status_t (EFIAPI *read)(struct efi_file_handle *file,

  			efi_uintn_t *buffer_size, void *buffer);

  	efi_status_t (EFIAPI *write)(struct efi_file_handle *file,

  			efi_uintn_t *buffer_size, void *buffer);

  	efi_status_t (EFIAPI *getpos)(struct efi_file_handle *file,

  				      u64 *pos);

  	efi_status_t (EFIAPI *setpos)(struct efi_file_handle *file,

  				      u64 pos);

  	efi_status_t (EFIAPI *getinfo)(struct efi_file_handle *file,

  			const efi_guid_t *info_type, efi_uintn_t *buffer_size,

  			void *buffer);

  	efi_status_t (EFIAPI *setinfo)(struct efi_file_handle *file,

  			const efi_guid_t *info_type, efi_uintn_t buffer_size,

  			void *buffer);

  	efi_status_t (EFIAPI *flush)(struct efi_file_handle *file);

  	efi_status_t (EFIAPI *open_ex)(struct efi_file_handle *file,
  			struct efi_file_handle **new_handle,
  			u16 *file_name, u64 open_mode, u64 attributes,
  			struct efi_file_io_token *token);
  	efi_status_t (EFIAPI *read_ex)(struct efi_file_handle *file,
  			struct efi_file_io_token *token);
  	efi_status_t (EFIAPI *write_ex)(struct efi_file_handle *file,
  			struct efi_file_io_token *token);
  	efi_status_t (EFIAPI *flush_ex)(struct efi_file_handle *file,
  			struct efi_file_io_token *token);

  };

  #define EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_REVISION 0x00010000
  
  struct efi_simple_file_system_protocol {
  	u64 rev;
  	efi_status_t (EFIAPI *open_volume)(struct efi_simple_file_system_protocol *this,
  			struct efi_file_handle **root);
  };
  
  #define EFI_FILE_INFO_GUID \
  	EFI_GUID(0x9576e92, 0x6d3f, 0x11d2, \
  		 0x8e, 0x39, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b)

  #define EFI_FILE_SYSTEM_INFO_GUID \
  	EFI_GUID(0x09576e93, 0x6d3f, 0x11d2, \
  		 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)

  #define EFI_FILE_SYSTEM_VOLUME_LABEL_ID \
  	EFI_GUID(0xdb47d7d3, 0xfe81, 0x11d3, \
  		 0x9a, 0x35, 0x00, 0x90, 0x27, 0x3f, 0xC1, 0x4d)

  #define EFI_FILE_MODE_READ	0x0000000000000001
  #define EFI_FILE_MODE_WRITE	0x0000000000000002
  #define EFI_FILE_MODE_CREATE	0x8000000000000000
  
  #define EFI_FILE_READ_ONLY	0x0000000000000001
  #define EFI_FILE_HIDDEN		0x0000000000000002
  #define EFI_FILE_SYSTEM		0x0000000000000004
  #define EFI_FILE_RESERVED	0x0000000000000008
  #define EFI_FILE_DIRECTORY	0x0000000000000010
  #define EFI_FILE_ARCHIVE	0x0000000000000020
  #define EFI_FILE_VALID_ATTR	0x0000000000000037
  
  struct efi_file_info {
  	u64 size;
  	u64 file_size;
  	u64 physical_size;
  	struct efi_time create_time;
  	struct efi_time last_access_time;
  	struct efi_time modification_time;
  	u64 attribute;

  	u16 file_name[0];

  };

  struct efi_file_system_info {
  	u64 size;
  	u8 read_only;
  	u64 volume_size;
  	u64 free_space;
  	u32 block_size;
  	u16 volume_label[0];
  };

  #define EFI_DRIVER_BINDING_PROTOCOL_GUID \
  	EFI_GUID(0x18a031ab, 0xb443, 0x4d1a,\
  		 0xa5, 0xc0, 0x0c, 0x09, 0x26, 0x1e, 0x9f, 0x71)
  struct efi_driver_binding_protocol {
  	efi_status_t (EFIAPI * supported)(
  			struct efi_driver_binding_protocol *this,
  			efi_handle_t controller_handle,
  			struct efi_device_path *remaining_device_path);
  	efi_status_t (EFIAPI * start)(
  			struct efi_driver_binding_protocol *this,
  			efi_handle_t controller_handle,
  			struct efi_device_path *remaining_device_path);
  	efi_status_t (EFIAPI * stop)(
  			struct efi_driver_binding_protocol *this,
  			efi_handle_t controller_handle,
  			efi_uintn_t number_of_children,
  			efi_handle_t *child_handle_buffer);
  	u32 version;
  	efi_handle_t image_handle;
  	efi_handle_t driver_binding_handle;
  };

  /* Deprecated version of the Unicode collation protocol */
  #define EFI_UNICODE_COLLATION_PROTOCOL_GUID \
  	EFI_GUID(0x1d85cd7f, 0xf43d, 0x11d2, \
  		 0x9a, 0x0c, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
  /* Current version of the Unicode collation protocol */

  #define EFI_UNICODE_COLLATION_PROTOCOL2_GUID \
  	EFI_GUID(0xa4c751fc, 0x23ae, 0x4c3e, \
  		 0x92, 0xe9, 0x49, 0x64, 0xcf, 0x63, 0xf3, 0x49)
  struct efi_unicode_collation_protocol {
  	efi_intn_t (EFIAPI *stri_coll)(
  		struct efi_unicode_collation_protocol *this, u16 *s1, u16 *s2);
  	bool (EFIAPI *metai_match)(struct efi_unicode_collation_protocol *this,
  				   const u16 *string, const u16 *patter);
  	void (EFIAPI *str_lwr)(struct efi_unicode_collation_protocol
  			       *this, u16 *string);
  	void (EFIAPI *str_upr)(struct efi_unicode_collation_protocol *this,
  			       u16 *string);
  	void (EFIAPI *fat_to_str)(struct efi_unicode_collation_protocol *this,
  				  efi_uintn_t fat_size, char *fat, u16 *string);
  	bool (EFIAPI *str_to_fat)(struct efi_unicode_collation_protocol *this,
  				  const u16 *string, efi_uintn_t fat_size,
  				  char *fat);
  	char *supported_languages;
  };

  struct efi_load_file_protocol {
  	efi_status_t (EFIAPI *load_file)(struct efi_load_file_protocol *this,
  					 struct efi_device_path *file_path,
  					 bool boot_policy,
  					 efi_uintn_t *buffer_size,
  					 void *buffer);
  };

  /* Boot manager load options */
  #define LOAD_OPTION_ACTIVE		0x00000001
  #define LOAD_OPTION_FORCE_RECONNECT	0x00000002
  #define LOAD_OPTION_HIDDEN		0x00000008
  /* All values 0x00000200-0x00001F00 are reserved */
  #define LOAD_OPTION_CATEGORY		0x00001F00
  #define LOAD_OPTION_CATEGORY_BOOT	0x00000000
  #define LOAD_OPTION_CATEGORY_APP	0x00000100

  /*
   * System Resource Table
   */
  /* Firmware Type Definitions */
  #define ESRT_FW_TYPE_UNKNOWN		0x00000000
  #define ESRT_FW_TYPE_SYSTEMFIRMWARE	0x00000001
  #define ESRT_FW_TYPE_DEVICEFIRMWARE	0x00000002
  #define ESRT_FW_TYPE_UEFIDRIVER		0x00000003
  
  /* Last Attempt Status Values */
  #define LAST_ATTEMPT_STATUS_SUCCESS			0x00000000
  #define LAST_ATTEMPT_STATUS_ERROR_UNSUCCESSFUL		0x00000001
  #define LAST_ATTEMPT_STATUS_ERROR_INSUFFICIENT_RESOURCES 0x00000002
  #define LAST_ATTEMPT_STATUS_ERROR_INCORRECT_VERSION	0x00000003
  #define LAST_ATTEMPT_STATUS_ERROR_INVALID_FORMAT	0x00000004
  #define LAST_ATTEMPT_STATUS_ERROR_AUTH_ERROR		0x00000005
  #define LAST_ATTEMPT_STATUS_ERROR_PWR_EVT_AC		0x00000006
  #define LAST_ATTEMPT_STATUS_ERROR_PWR_EVT_BATT		0x00000007
  #define LAST_ATTEMPT_STATUS_ERROR_UNSATISFIED_DEPENDENCIES 0x00000008
  
  /*
   * The LastAttemptStatus values of 0x1000 - 0x4000 are reserved for vendor
   * usage.
   */
  #define LAST_ATTEMPT_STATUS_ERROR_UNSUCCESSFUL_VENDOR_RANGE_MIN 0x00001000
  #define LAST_ATTEMPT_STATUS_ERROR_UNSUCCESSFUL_VENDOR_RANGE_MAX 0x00004000

  #endif