include/efi_api.h

   1 /*
   2  * Extensible Firmware Interface
   3  * Based on 'Extensible Firmware Interface Specification' version 0.9,
   4  * April 30, 1999
   5  *
   6  * Copyright (C) 1999 VA Linux Systems
   7  * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
   8  * Copyright (C) 1999, 2002-2003 Hewlett-Packard Co.
   9  *      David Mosberger-Tang <davidm@hpl.hp.com>
  10  *      Stephane Eranian <eranian@hpl.hp.com>
  11  *
  12  * From include/linux/efi.h in kernel 4.1 with some additions/subtractions
  13  */
  14
  15 #ifndef _EFI_API_H
  16 #define _EFI_API_H
  17
  18 #include <efi.h>
  19
  20 /* Types and defines for EFI CreateEvent */
  21 enum efi_event_type {
  22         EFI_TIMER_STOP = 0,
  23         EFI_TIMER_PERIODIC = 1,
  24         EFI_TIMER_RELATIVE = 2
  25 };
  26
  27 /* EFI Boot Services table */
  28 struct efi_boot_services {
  29         struct efi_table_hdr hdr;
  30         efi_status_t (EFIAPI *raise_tpl)(unsigned long new_tpl);
  31         void (EFIAPI *restore_tpl)(unsigned long old_tpl);
  32
  33         efi_status_t (EFIAPI *allocate_pages)(int, int, unsigned long,
  34                                               efi_physical_addr_t *);
  35         efi_status_t (EFIAPI *free_pages)(efi_physical_addr_t, unsigned long);
  36         efi_status_t (EFIAPI *get_memory_map)(unsigned long *memory_map_size,
  37                         struct efi_mem_desc *desc, unsigned long *key,
  38                         unsigned long *desc_size, u32 *desc_version);
  39         efi_status_t (EFIAPI *allocate_pool)(int, unsigned long, void **);
  40         efi_status_t (EFIAPI *free_pool)(void *);
  41
  42         efi_status_t (EFIAPI *create_event)(enum efi_event_type type,
  43                         unsigned long notify_tpl,
  44                         void (EFIAPI *notify_function) (void *event,
  45                                                         void *context),
  46                         void *notify_context, void **event);
  47         efi_status_t (EFIAPI *set_timer)(void *event, int type,
  48                         uint64_t trigger_time);
  49         efi_status_t (EFIAPI *wait_for_event)(unsigned long number_of_events,
  50                         void *event, unsigned long *index);
  51         efi_status_t (EFIAPI *signal_event)(void *event);
  52         efi_status_t (EFIAPI *close_event)(void *event);
  53         efi_status_t (EFIAPI *check_event)(void *event);
  54
  55         efi_status_t (EFIAPI *install_protocol_interface)(
  56                         void **handle, efi_guid_t *protocol,
  57                         int protocol_interface_type, void *protocol_interface);
  58         efi_status_t (EFIAPI *reinstall_protocol_interface)(
  59                         void *handle, efi_guid_t *protocol,
  60                         void *old_interface, void *new_interface);
  61         efi_status_t (EFIAPI *uninstall_protocol_interface)(void *handle,
  62                         efi_guid_t *protocol, void *protocol_interface);
  63         efi_status_t (EFIAPI *handle_protocol)(efi_handle_t, efi_guid_t *,
  64                                                void **);
  65         void *reserved;
  66         efi_status_t (EFIAPI *register_protocol_notify)(
  67                         efi_guid_t *protocol, void *event,
  68                         void **registration);
  69         efi_status_t (EFIAPI *locate_handle)(
  70                         enum efi_locate_search_type search_type,
  71                         efi_guid_t *protocol, void *search_key,
  72                         unsigned long *buffer_size, efi_handle_t *buffer);
  73         efi_status_t (EFIAPI *locate_device_path)(efi_guid_t *protocol,
  74                         struct efi_device_path **device_path,
  75                         efi_handle_t *device);
  76         efi_status_t (EFIAPI *install_configuration_table)(
  77                         efi_guid_t *guid, void *table);
  78
  79         efi_status_t (EFIAPI *load_image)(bool boot_policiy,
  80                         efi_handle_t parent_image,
  81                         struct efi_device_path *file_path, void *source_buffer,
  82                         unsigned long source_size, efi_handle_t *image);
  83         efi_status_t (EFIAPI *start_image)(efi_handle_t handle,
  84                                            unsigned long *exitdata_size,
  85                                            s16 **exitdata);
  86         efi_status_t (EFIAPI *exit)(efi_handle_t handle,
  87                                     efi_status_t exit_status,
  88                                     unsigned long exitdata_size, s16 *exitdata);
  89         efi_status_t (EFIAPI *unload_image)(void *image_handle);
  90         efi_status_t (EFIAPI *exit_boot_services)(efi_handle_t, unsigned long);
  91
  92         efi_status_t (EFIAPI *get_next_monotonic_count)(u64 *count);
  93         efi_status_t (EFIAPI *stall)(unsigned long usecs);
  94         efi_status_t (EFIAPI *set_watchdog_timer)(unsigned long timeout,
  95                         uint64_t watchdog_code, unsigned long data_size,
  96                         uint16_t *watchdog_data);
  97         efi_status_t(EFIAPI *connect_controller)(efi_handle_t controller_handle,
  98                         efi_handle_t *driver_image_handle,
  99                         struct efi_device_path *remaining_device_path,
 100                         bool recursive);
 101         efi_status_t (EFIAPI *disconnect_controller)(void *controller_handle,
 102                         void *driver_image_handle, void *child_handle);
 103 #define EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL  0x00000001
 104 #define EFI_OPEN_PROTOCOL_GET_PROTOCOL        0x00000002
 105 #define EFI_OPEN_PROTOCOL_TEST_PROTOCOL       0x00000004
 106 #define EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER 0x00000008
 107 #define EFI_OPEN_PROTOCOL_BY_DRIVER           0x00000010
 108 #define EFI_OPEN_PROTOCOL_EXCLUSIVE           0x00000020
 109         efi_status_t (EFIAPI *open_protocol)(efi_handle_t handle,
 110                         efi_guid_t *protocol, void **interface,
 111                         efi_handle_t agent_handle,
 112                         efi_handle_t controller_handle, u32 attributes);
 113         efi_status_t (EFIAPI *close_protocol)(void *handle,
 114                         efi_guid_t *protocol, void *agent_handle,
 115                         void *controller_handle);
 116         efi_status_t(EFIAPI *open_protocol_information)(efi_handle_t handle,
 117                         efi_guid_t *protocol,
 118                         struct efi_open_protocol_info_entry **entry_buffer,
 119                         unsigned long *entry_count);
 120         efi_status_t (EFIAPI *protocols_per_handle)(efi_handle_t handle,
 121                         efi_guid_t ***protocol_buffer,
 122                         unsigned long *protocols_buffer_count);
 123         efi_status_t (EFIAPI *locate_handle_buffer) (
 124                         enum efi_locate_search_type search_type,
 125                         efi_guid_t *protocol, void *search_key,
 126                         unsigned long *no_handles, efi_handle_t **buffer);
 127         efi_status_t (EFIAPI *locate_protocol)(efi_guid_t *protocol,
 128                         void *registration, void **protocol_interface);
 129         efi_status_t (EFIAPI *install_multiple_protocol_interfaces)(
 130                         void **handle, ...);
 131         efi_status_t (EFIAPI *uninstall_multiple_protocol_interfaces)(
 132                         void *handle, ...);
 133         efi_status_t (EFIAPI *calculate_crc32)(void *data,
 134                         unsigned long data_size, uint32_t *crc32);
 135         void (EFIAPI *copy_mem)(void *destination, void *source,
 136                         unsigned long length);
 137         void (EFIAPI *set_mem)(void *buffer, unsigned long size,
 138                         uint8_t value);
 139         void *create_event_ex;
 140 };
 141
 142 /* Types and defines for EFI ResetSystem */
 143 enum efi_reset_type {
 144         EFI_RESET_COLD = 0,
 145         EFI_RESET_WARM = 1,
 146         EFI_RESET_SHUTDOWN = 2
 147 };
 148
 149 /* EFI Runtime Services table */
 150 #define EFI_RUNTIME_SERVICES_SIGNATURE  0x5652453544e5552ULL
 151 #define EFI_RUNTIME_SERVICES_REVISION   0x00010000
 152
 153 struct efi_runtime_services {
 154         struct efi_table_hdr hdr;
 155         efi_status_t (EFIAPI *get_time)(struct efi_time *time,
 156                         struct efi_time_cap *capabilities);
 157         efi_status_t (EFIAPI *set_time)(struct efi_time *time);
 158         efi_status_t (EFIAPI *get_wakeup_time)(char *enabled, char *pending,
 159                         struct efi_time *time);
 160         efi_status_t (EFIAPI *set_wakeup_time)(char enabled,
 161                         struct efi_time *time);
 162         efi_status_t (EFIAPI *set_virtual_address_map)(
 163                         unsigned long memory_map_size,
 164                         unsigned long descriptor_size,
 165                         uint32_t descriptor_version,
 166                         struct efi_mem_desc *virtmap);
 167         efi_status_t (*convert_pointer)(unsigned long dbg, void **address);
 168         efi_status_t (EFIAPI *get_variable)(s16 *variable_name,
 169                         efi_guid_t *vendor, u32 *attributes,
 170                         unsigned long *data_size, void *data);
 171         efi_status_t (EFIAPI *get_next_variable)(
 172                         unsigned long *variable_name_size,
 173                         s16 *variable_name, efi_guid_t *vendor);
 174         efi_status_t (EFIAPI *set_variable)(s16 *variable_name,
 175                         efi_guid_t *vendor, u32 attributes,
 176                         unsigned long data_size, void *data);
 177         efi_status_t (EFIAPI *get_next_high_mono_count)(
 178                         uint32_t *high_count);
 179         void (EFIAPI *reset_system)(enum efi_reset_type reset_type,
 180                                     efi_status_t reset_status,
 181                                     unsigned long data_size, void *reset_data);
 182         void *update_capsule;
 183         void *query_capsule_caps;
 184         void *query_variable_info;
 185 };
 186
 187 /* EFI Configuration Table and GUID definitions */
 188 #define NULL_GUID \
 189         EFI_GUID(0x00000000, 0x0000, 0x0000, 0x00, 0x00, \
 190                  0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
 191
 192 #define LOADED_IMAGE_PROTOCOL_GUID \
 193         EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, \
 194                  0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
 195
 196 #define EFI_FDT_GUID \
 197         EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, \
 198                  0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0)
 199
 200 struct efi_configuration_table
 201 {
 202         efi_guid_t guid;
 203         void *table;
 204 };
 205
 206 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
 207
 208 struct efi_system_table {
 209         struct efi_table_hdr hdr;
 210         unsigned long fw_vendor;   /* physical addr of wchar_t vendor string */
 211         u32 fw_revision;
 212         unsigned long con_in_handle;
 213         struct efi_simple_input_interface *con_in;
 214         unsigned long con_out_handle;
 215         struct efi_simple_text_output_protocol *con_out;
 216         unsigned long stderr_handle;
 217         struct efi_simple_text_output_protocol *std_err;
 218         struct efi_runtime_services *runtime;
 219         struct efi_boot_services *boottime;
 220         unsigned long nr_tables;
 221         struct efi_configuration_table *tables;
 222 };
 223
 224 #define LOADED_IMAGE_GUID \
 225         EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, \
 226                  0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
 227
 228 struct efi_loaded_image {
 229         u32 revision;
 230         void *parent_handle;
 231         struct efi_system_table *system_table;
 232         void *device_handle;
 233         void *file_path;
 234         void *reserved;
 235         u32 load_options_size;
 236         void *load_options;
 237         void *image_base;
 238         aligned_u64 image_size;
 239         unsigned int image_code_type;
 240         unsigned int image_data_type;
 241         unsigned long unload;
 242 };
 243
 244 #define DEVICE_PATH_GUID \
 245         EFI_GUID(0x09576e91, 0x6d3f, 0x11d2, \
 246                  0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
 247
 248 #define DEVICE_PATH_TYPE_END                    0x7f
 249 #  define DEVICE_PATH_SUB_TYPE_END              0xff
 250
 251 struct efi_device_path {
 252         u8 type;
 253         u8 sub_type;
 254         u16 length;
 255 };
 256
 257 #define DEVICE_PATH_TYPE_MEDIA_DEVICE           0x04
 258 #  define DEVICE_PATH_SUB_TYPE_FILE_PATH        0x04
 259
 260 struct efi_device_path_file_path {
 261         struct efi_device_path dp;
 262         u16 str[32];
 263 };
 264
 265 #define BLOCK_IO_GUID \
 266         EFI_GUID(0x964e5b21, 0x6459, 0x11d2, \
 267                  0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
 268
 269 struct efi_block_io_media
 270 {
 271         u32 media_id;
 272         char removable_media;
 273         char media_present;
 274         char logical_partition;
 275         char read_only;
 276         char write_caching;
 277         u8 pad[3];
 278         u32 block_size;
 279         u32 io_align;
 280         u8 pad2[4];
 281         u64 last_block;
 282 };
 283
 284 struct efi_block_io {
 285         u64 revision;
 286         struct efi_block_io_media *media;
 287         efi_status_t (EFIAPI *reset)(struct efi_block_io *this,
 288                         char extended_verification);
 289         efi_status_t (EFIAPI *read_blocks)(struct efi_block_io *this,
 290                         u32 media_id, u64 lba, unsigned long buffer_size,
 291                         void *buffer);
 292         efi_status_t (EFIAPI *write_blocks)(struct efi_block_io *this,
 293                         u32 media_id, u64 lba, unsigned long buffer_size,
 294                         void *buffer);
 295         efi_status_t (EFIAPI *flush_blocks)(struct efi_block_io *this);
 296 };
 297
 298 struct simple_text_output_mode {
 299         s32 max_mode;
 300         s32 mode;
 301         s32 attribute;
 302         s32 cursor_column;
 303         s32 cursor_row;
 304         bool cursor_visible;
 305 };
 306
 307 struct efi_simple_text_output_protocol {
 308         void *reset;
 309         efi_status_t (EFIAPI *output_string)(
 310                         struct efi_simple_text_output_protocol *this,
 311                         const unsigned short *str);
 312         efi_status_t (EFIAPI *test_string)(
 313                         struct efi_simple_text_output_protocol *this,
 314                         const unsigned short *str);
 315         efi_status_t(EFIAPI *query_mode)(
 316                         struct efi_simple_text_output_protocol *this,
 317                         unsigned long mode_number, unsigned long *columns,
 318                         unsigned long *rows);
 319         efi_status_t(EFIAPI *set_mode)(
 320                         struct efi_simple_text_output_protocol *this,
 321                         unsigned long mode_number);
 322         efi_status_t(EFIAPI *set_attribute)(
 323                         struct efi_simple_text_output_protocol *this,
 324                         unsigned long attribute);
 325         efi_status_t(EFIAPI *clear_screen) (
 326                         struct efi_simple_text_output_protocol *this);
 327         efi_status_t(EFIAPI *set_cursor_position) (
 328                         struct efi_simple_text_output_protocol *this,
 329                         unsigned long column, unsigned long row);
 330         efi_status_t(EFIAPI *enable_cursor)(
 331                         struct efi_simple_text_output_protocol *this,
 332                         bool enable);
 333         struct simple_text_output_mode *mode;
 334 };
 335
 336 struct efi_input_key {
 337         u16 scan_code;
 338         s16 unicode_char;
 339 };
 340
 341 struct efi_simple_input_interface {
 342         efi_status_t(EFIAPI *reset)(struct efi_simple_input_interface *this,
 343                         bool ExtendedVerification);
 344         efi_status_t(EFIAPI *read_key_stroke)(
 345                         struct efi_simple_input_interface *this,
 346                         struct efi_input_key *key);
 347         void *wait_for_key;
 348 };
 349
 350 #define CONSOLE_CONTROL_GUID \
 351         EFI_GUID(0xf42f7782, 0x12e, 0x4c12, \
 352                  0x99, 0x56, 0x49, 0xf9, 0x43, 0x4, 0xf7, 0x21)
 353 #define EFI_CONSOLE_MODE_TEXT   0
 354 #define EFI_CONSOLE_MODE_GFX    1
 355
 356 struct efi_console_control_protocol
 357 {
 358         efi_status_t (EFIAPI *get_mode)(
 359                         struct efi_console_control_protocol *this, int *mode,
 360                         char *uga_exists, char *std_in_locked);
 361         efi_status_t (EFIAPI *set_mode)(
 362                         struct efi_console_control_protocol *this, int mode);
 363         efi_status_t (EFIAPI *lock_std_in)(
 364                         struct efi_console_control_protocol *this,
 365                         uint16_t *password);
 366 };
 367
 368 #define EFI_GOP_GUID \
 369         EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, \
 370                  0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a)
 371
 372 #define EFI_GOT_RGBA8           0
 373 #define EFI_GOT_BGRA8           1
 374 #define EFI_GOT_BITMASK         2
 375
 376 struct efi_gop_mode_info
 377 {
 378         u32 version;
 379         u32 width;
 380         u32 height;
 381         u32 pixel_format;
 382         u32 pixel_bitmask[4];
 383         u32 pixels_per_scanline;
 384 };
 385
 386 struct efi_gop_mode
 387 {
 388         u32 max_mode;
 389         u32 mode;
 390         struct efi_gop_mode_info *info;
 391         unsigned long info_size;
 392         efi_physical_addr_t fb_base;
 393         unsigned long fb_size;
 394 };
 395
 396 #define EFI_BLT_VIDEO_FILL              0
 397 #define EFI_BLT_VIDEO_TO_BLT_BUFFER     1
 398 #define EFI_BLT_BUFFER_TO_VIDEO         2
 399 #define EFI_BLT_VIDEO_TO_VIDEO          3
 400
 401 struct efi_gop
 402 {
 403         efi_status_t (EFIAPI *query_mode)(struct efi_gop *this, u32 mode_number,
 404                                           unsigned long *size_of_info,
 405                                           struct efi_gop_mode_info **info);
 406         efi_status_t (EFIAPI *set_mode)(struct efi_gop *this, u32 mode_number);
 407         efi_status_t (EFIAPI *blt)(struct efi_gop *this, void *buffer,
 408                                    unsigned long operation, unsigned long sx,
 409                                    unsigned long sy, unsigned long dx,
 410                                    unsigned long dy, unsigned long width,
 411                                    unsigned long height, unsigned long delta);
 412         struct efi_gop_mode *mode;
 413 };
 414
 415 #endif