drivers/firmware/efi/libstub/efistub.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2
   3 #ifndef _DRIVERS_FIRMWARE_EFI_EFISTUB_H
   4 #define _DRIVERS_FIRMWARE_EFI_EFISTUB_H
   5
   6 /* error code which can't be mistaken for valid address */
   7 #define EFI_ERROR       (~0UL)
   8
   9 /*
  10  * __init annotations should not be used in the EFI stub, since the code is
  11  * either included in the decompressor (x86, ARM) where they have no effect,
  12  * or the whole stub is __init annotated at the section level (arm64), by
  13  * renaming the sections, in which case the __init annotation will be
  14  * redundant, and will result in section names like .init.init.text, and our
  15  * linker script does not expect that.
  16  */
  17 #undef __init
  18
  19 /*
  20  * Allow the platform to override the allocation granularity: this allows
  21  * systems that have the capability to run with a larger page size to deal
  22  * with the allocations for initrd and fdt more efficiently.
  23  */
  24 #ifndef EFI_ALLOC_ALIGN
  25 #define EFI_ALLOC_ALIGN         EFI_PAGE_SIZE
  26 #endif
  27
  28 #ifdef CONFIG_ARM
  29 #define __efistub_global        __section(.data)
  30 #else
  31 #define __efistub_global
  32 #endif
  33
  34 extern bool __pure nochunk(void);
  35 extern bool __pure nokaslr(void);
  36 extern bool __pure noinitrd(void);
  37 extern bool __pure is_quiet(void);
  38 extern bool __pure novamap(void);
  39
  40 extern __pure efi_system_table_t  *efi_system_table(void);
  41
  42 #define pr_efi(msg)             do {                    \
  43         if (!is_quiet()) efi_printk("EFI stub: "msg);   \
  44 } while (0)
  45
  46 #define pr_efi_err(msg) efi_printk("EFI stub: ERROR: "msg)
  47
  48 /* Helper macros for the usual case of using simple C variables: */
  49 #ifndef fdt_setprop_inplace_var
  50 #define fdt_setprop_inplace_var(fdt, node_offset, name, var) \
  51         fdt_setprop_inplace((fdt), (node_offset), (name), &(var), sizeof(var))
  52 #endif
  53
  54 #ifndef fdt_setprop_var
  55 #define fdt_setprop_var(fdt, node_offset, name, var) \
  56         fdt_setprop((fdt), (node_offset), (name), &(var), sizeof(var))
  57 #endif
  58
  59 #define get_efi_var(name, vendor, ...)                          \
  60         efi_rt_call(get_variable, (efi_char16_t *)(name),       \
  61                     (efi_guid_t *)(vendor), __VA_ARGS__)
  62
  63 #define set_efi_var(name, vendor, ...)                          \
  64         efi_rt_call(set_variable, (efi_char16_t *)(name),       \
  65                     (efi_guid_t *)(vendor), __VA_ARGS__)
  66
  67 #define efi_get_handle_at(array, idx)                                   \
  68         (efi_is_native() ? (array)[idx]                                 \
  69                 : (efi_handle_t)(unsigned long)((u32 *)(array))[idx])
  70
  71 #define efi_get_handle_num(size)                                        \
  72         ((size) / (efi_is_native() ? sizeof(efi_handle_t) : sizeof(u32)))
  73
  74 #define for_each_efi_handle(handle, array, size, i)                     \
  75         for (i = 0;                                                     \
  76              i < efi_get_handle_num(size) &&                            \
  77                 ((handle = efi_get_handle_at((array), i)) || true);     \
  78              i++)
  79
  80 /*
  81  * Allocation types for calls to boottime->allocate_pages.
  82  */
  83 #define EFI_ALLOCATE_ANY_PAGES          0
  84 #define EFI_ALLOCATE_MAX_ADDRESS        1
  85 #define EFI_ALLOCATE_ADDRESS            2
  86 #define EFI_MAX_ALLOCATE_TYPE           3
  87
  88 /*
  89  * The type of search to perform when calling boottime->locate_handle
  90  */
  91 #define EFI_LOCATE_ALL_HANDLES                  0
  92 #define EFI_LOCATE_BY_REGISTER_NOTIFY           1
  93 #define EFI_LOCATE_BY_PROTOCOL                  2
  94
  95 struct efi_boot_memmap {
  96         efi_memory_desc_t       **map;
  97         unsigned long           *map_size;
  98         unsigned long           *desc_size;
  99         u32                     *desc_ver;
 100         unsigned long           *key_ptr;
 101         unsigned long           *buff_size;
 102 };
 103
 104 typedef struct efi_generic_dev_path efi_device_path_protocol_t;
 105
 106 /*
 107  * EFI Boot Services table
 108  */
 109 union efi_boot_services {
 110         struct {
 111                 efi_table_hdr_t hdr;
 112                 void *raise_tpl;
 113                 void *restore_tpl;
 114                 efi_status_t (__efiapi *allocate_pages)(int, int, unsigned long,
 115                                                         efi_physical_addr_t *);
 116                 efi_status_t (__efiapi *free_pages)(efi_physical_addr_t,
 117                                                     unsigned long);
 118                 efi_status_t (__efiapi *get_memory_map)(unsigned long *, void *,
 119                                                         unsigned long *,
 120                                                         unsigned long *, u32 *);
 121                 efi_status_t (__efiapi *allocate_pool)(int, unsigned long,
 122                                                        void **);
 123                 efi_status_t (__efiapi *free_pool)(void *);
 124                 void *create_event;
 125                 void *set_timer;
 126                 void *wait_for_event;
 127                 void *signal_event;
 128                 void *close_event;
 129                 void *check_event;
 130                 void *install_protocol_interface;
 131                 void *reinstall_protocol_interface;
 132                 void *uninstall_protocol_interface;
 133                 efi_status_t (__efiapi *handle_protocol)(efi_handle_t,
 134                                                          efi_guid_t *, void **);
 135                 void *__reserved;
 136                 void *register_protocol_notify;
 137                 efi_status_t (__efiapi *locate_handle)(int, efi_guid_t *,
 138                                                        void *, unsigned long *,
 139                                                        efi_handle_t *);
 140                 efi_status_t (__efiapi *locate_device_path)(efi_guid_t *,
 141                                                             efi_device_path_protocol_t **,
 142                                                             efi_handle_t *);
 143                 efi_status_t (__efiapi *install_configuration_table)(efi_guid_t *,
 144                                                                      void *);
 145                 void *load_image;
 146                 void *start_image;
 147                 efi_status_t __noreturn (__efiapi *exit)(efi_handle_t,
 148                                                          efi_status_t,
 149                                                          unsigned long,
 150                                                          efi_char16_t *);
 151                 void *unload_image;
 152                 efi_status_t (__efiapi *exit_boot_services)(efi_handle_t,
 153                                                             unsigned long);
 154                 void *get_next_monotonic_count;
 155                 void *stall;
 156                 void *set_watchdog_timer;
 157                 void *connect_controller;
 158                 efi_status_t (__efiapi *disconnect_controller)(efi_handle_t,
 159                                                                efi_handle_t,
 160                                                                efi_handle_t);
 161                 void *open_protocol;
 162                 void *close_protocol;
 163                 void *open_protocol_information;
 164                 void *protocols_per_handle;
 165                 void *locate_handle_buffer;
 166                 efi_status_t (__efiapi *locate_protocol)(efi_guid_t *, void *,
 167                                                          void **);
 168                 void *install_multiple_protocol_interfaces;
 169                 void *uninstall_multiple_protocol_interfaces;
 170                 void *calculate_crc32;
 171                 void *copy_mem;
 172                 void *set_mem;
 173                 void *create_event_ex;
 174         };
 175         struct {
 176                 efi_table_hdr_t hdr;
 177                 u32 raise_tpl;
 178                 u32 restore_tpl;
 179                 u32 allocate_pages;
 180                 u32 free_pages;
 181                 u32 get_memory_map;
 182                 u32 allocate_pool;
 183                 u32 free_pool;
 184                 u32 create_event;
 185                 u32 set_timer;
 186                 u32 wait_for_event;
 187                 u32 signal_event;
 188                 u32 close_event;
 189                 u32 check_event;
 190                 u32 install_protocol_interface;
 191                 u32 reinstall_protocol_interface;
 192                 u32 uninstall_protocol_interface;
 193                 u32 handle_protocol;
 194                 u32 __reserved;
 195                 u32 register_protocol_notify;
 196                 u32 locate_handle;
 197                 u32 locate_device_path;
 198                 u32 install_configuration_table;
 199                 u32 load_image;
 200                 u32 start_image;
 201                 u32 exit;
 202                 u32 unload_image;
 203                 u32 exit_boot_services;
 204                 u32 get_next_monotonic_count;
 205                 u32 stall;
 206                 u32 set_watchdog_timer;
 207                 u32 connect_controller;
 208                 u32 disconnect_controller;
 209                 u32 open_protocol;
 210                 u32 close_protocol;
 211                 u32 open_protocol_information;
 212                 u32 protocols_per_handle;
 213                 u32 locate_handle_buffer;
 214                 u32 locate_protocol;
 215                 u32 install_multiple_protocol_interfaces;
 216                 u32 uninstall_multiple_protocol_interfaces;
 217                 u32 calculate_crc32;
 218                 u32 copy_mem;
 219                 u32 set_mem;
 220                 u32 create_event_ex;
 221         } mixed_mode;
 222 };
 223
 224 typedef union efi_uga_draw_protocol efi_uga_draw_protocol_t;
 225
 226 union efi_uga_draw_protocol {
 227         struct {
 228                 efi_status_t (__efiapi *get_mode)(efi_uga_draw_protocol_t *,
 229                                                   u32*, u32*, u32*, u32*);
 230                 void *set_mode;
 231                 void *blt;
 232         };
 233         struct {
 234                 u32 get_mode;
 235                 u32 set_mode;
 236                 u32 blt;
 237         } mixed_mode;
 238 };
 239
 240 union efi_simple_text_output_protocol {
 241         struct {
 242                 void *reset;
 243                 efi_status_t (__efiapi *output_string)(efi_simple_text_output_protocol_t *,
 244                                                        efi_char16_t *);
 245                 void *test_string;
 246         };
 247         struct {
 248                 u32 reset;
 249                 u32 output_string;
 250                 u32 test_string;
 251         } mixed_mode;
 252 };
 253
 254 #define PIXEL_RGB_RESERVED_8BIT_PER_COLOR               0
 255 #define PIXEL_BGR_RESERVED_8BIT_PER_COLOR               1
 256 #define PIXEL_BIT_MASK                                  2
 257 #define PIXEL_BLT_ONLY                                  3
 258 #define PIXEL_FORMAT_MAX                                4
 259
 260 typedef struct {
 261         u32 red_mask;
 262         u32 green_mask;
 263         u32 blue_mask;
 264         u32 reserved_mask;
 265 } efi_pixel_bitmask_t;
 266
 267 typedef struct {
 268         u32 version;
 269         u32 horizontal_resolution;
 270         u32 vertical_resolution;
 271         int pixel_format;
 272         efi_pixel_bitmask_t pixel_information;
 273         u32 pixels_per_scan_line;
 274 } efi_graphics_output_mode_info_t;
 275
 276 typedef union efi_graphics_output_protocol_mode efi_graphics_output_protocol_mode_t;
 277
 278 union efi_graphics_output_protocol_mode {
 279         struct {
 280                 u32 max_mode;
 281                 u32 mode;
 282                 efi_graphics_output_mode_info_t *info;
 283                 unsigned long size_of_info;
 284                 efi_physical_addr_t frame_buffer_base;
 285                 unsigned long frame_buffer_size;
 286         };
 287         struct {
 288                 u32 max_mode;
 289                 u32 mode;
 290                 u32 info;
 291                 u32 size_of_info;
 292                 u64 frame_buffer_base;
 293                 u32 frame_buffer_size;
 294         } mixed_mode;
 295 };
 296
 297 typedef union efi_graphics_output_protocol efi_graphics_output_protocol_t;
 298
 299 union efi_graphics_output_protocol {
 300         struct {
 301                 void *query_mode;
 302                 void *set_mode;
 303                 void *blt;
 304                 efi_graphics_output_protocol_mode_t *mode;
 305         };
 306         struct {
 307                 u32 query_mode;
 308                 u32 set_mode;
 309                 u32 blt;
 310                 u32 mode;
 311         } mixed_mode;
 312 };
 313
 314 typedef union {
 315         struct {
 316                 u32                     revision;
 317                 efi_handle_t            parent_handle;
 318                 efi_system_table_t      *system_table;
 319                 efi_handle_t            device_handle;
 320                 void                    *file_path;
 321                 void                    *reserved;
 322                 u32                     load_options_size;
 323                 void                    *load_options;
 324                 void                    *image_base;
 325                 __aligned_u64           image_size;
 326                 unsigned int            image_code_type;
 327                 unsigned int            image_data_type;
 328                 efi_status_t            (__efiapi *unload)(efi_handle_t image_handle);
 329         };
 330         struct {
 331                 u32             revision;
 332                 u32             parent_handle;
 333                 u32             system_table;
 334                 u32             device_handle;
 335                 u32             file_path;
 336                 u32             reserved;
 337                 u32             load_options_size;
 338                 u32             load_options;
 339                 u32             image_base;
 340                 __aligned_u64   image_size;
 341                 u32             image_code_type;
 342                 u32             image_data_type;
 343                 u32             unload;
 344         } mixed_mode;
 345 } efi_loaded_image_t;
 346
 347 typedef struct {
 348         u64                     size;
 349         u64                     file_size;
 350         u64                     phys_size;
 351         efi_time_t              create_time;
 352         efi_time_t              last_access_time;
 353         efi_time_t              modification_time;
 354         __aligned_u64           attribute;
 355         efi_char16_t            filename[];
 356 } efi_file_info_t;
 357
 358 typedef struct efi_file_protocol efi_file_protocol_t;
 359
 360 struct efi_file_protocol {
 361         u64             revision;
 362         efi_status_t    (__efiapi *open)        (efi_file_protocol_t *,
 363                                                  efi_file_protocol_t **,
 364                                                  efi_char16_t *, u64, u64);
 365         efi_status_t    (__efiapi *close)       (efi_file_protocol_t *);
 366         efi_status_t    (__efiapi *delete)      (efi_file_protocol_t *);
 367         efi_status_t    (__efiapi *read)        (efi_file_protocol_t *,
 368                                                  unsigned long *, void *);
 369         efi_status_t    (__efiapi *write)       (efi_file_protocol_t *,
 370                                                  unsigned long, void *);
 371         efi_status_t    (__efiapi *get_position)(efi_file_protocol_t *, u64 *);
 372         efi_status_t    (__efiapi *set_position)(efi_file_protocol_t *, u64);
 373         efi_status_t    (__efiapi *get_info)    (efi_file_protocol_t *,
 374                                                  efi_guid_t *, unsigned long *,
 375                                                  void *);
 376         efi_status_t    (__efiapi *set_info)    (efi_file_protocol_t *,
 377                                                  efi_guid_t *, unsigned long,
 378                                                  void *);
 379         efi_status_t    (__efiapi *flush)       (efi_file_protocol_t *);
 380 };
 381
 382 typedef struct efi_simple_file_system_protocol efi_simple_file_system_protocol_t;
 383
 384 struct efi_simple_file_system_protocol {
 385         u64     revision;
 386         int     (__efiapi *open_volume)(efi_simple_file_system_protocol_t *,
 387                                         efi_file_protocol_t **);
 388 };
 389
 390 #define EFI_FILE_MODE_READ      0x0000000000000001
 391 #define EFI_FILE_MODE_WRITE     0x0000000000000002
 392 #define EFI_FILE_MODE_CREATE    0x8000000000000000
 393
 394 typedef enum {
 395         EfiPciIoWidthUint8,
 396         EfiPciIoWidthUint16,
 397         EfiPciIoWidthUint32,
 398         EfiPciIoWidthUint64,
 399         EfiPciIoWidthFifoUint8,
 400         EfiPciIoWidthFifoUint16,
 401         EfiPciIoWidthFifoUint32,
 402         EfiPciIoWidthFifoUint64,
 403         EfiPciIoWidthFillUint8,
 404         EfiPciIoWidthFillUint16,
 405         EfiPciIoWidthFillUint32,
 406         EfiPciIoWidthFillUint64,
 407         EfiPciIoWidthMaximum
 408 } EFI_PCI_IO_PROTOCOL_WIDTH;
 409
 410 typedef enum {
 411         EfiPciIoAttributeOperationGet,
 412         EfiPciIoAttributeOperationSet,
 413         EfiPciIoAttributeOperationEnable,
 414         EfiPciIoAttributeOperationDisable,
 415         EfiPciIoAttributeOperationSupported,
 416     EfiPciIoAttributeOperationMaximum
 417 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION;
 418
 419 typedef struct {
 420         u32 read;
 421         u32 write;
 422 } efi_pci_io_protocol_access_32_t;
 423
 424 typedef union efi_pci_io_protocol efi_pci_io_protocol_t;
 425
 426 typedef
 427 efi_status_t (__efiapi *efi_pci_io_protocol_cfg_t)(efi_pci_io_protocol_t *,
 428                                                    EFI_PCI_IO_PROTOCOL_WIDTH,
 429                                                    u32 offset,
 430                                                    unsigned long count,
 431                                                    void *buffer);
 432
 433 typedef struct {
 434         void *read;
 435         void *write;
 436 } efi_pci_io_protocol_access_t;
 437
 438 typedef struct {
 439         efi_pci_io_protocol_cfg_t read;
 440         efi_pci_io_protocol_cfg_t write;
 441 } efi_pci_io_protocol_config_access_t;
 442
 443 union efi_pci_io_protocol {
 444         struct {
 445                 void *poll_mem;
 446                 void *poll_io;
 447                 efi_pci_io_protocol_access_t mem;
 448                 efi_pci_io_protocol_access_t io;
 449                 efi_pci_io_protocol_config_access_t pci;
 450                 void *copy_mem;
 451                 void *map;
 452                 void *unmap;
 453                 void *allocate_buffer;
 454                 void *free_buffer;
 455                 void *flush;
 456                 efi_status_t (__efiapi *get_location)(efi_pci_io_protocol_t *,
 457                                                       unsigned long *segment_nr,
 458                                                       unsigned long *bus_nr,
 459                                                       unsigned long *device_nr,
 460                                                       unsigned long *func_nr);
 461                 void *attributes;
 462                 void *get_bar_attributes;
 463                 void *set_bar_attributes;
 464                 uint64_t romsize;
 465                 void *romimage;
 466         };
 467         struct {
 468                 u32 poll_mem;
 469                 u32 poll_io;
 470                 efi_pci_io_protocol_access_32_t mem;
 471                 efi_pci_io_protocol_access_32_t io;
 472                 efi_pci_io_protocol_access_32_t pci;
 473                 u32 copy_mem;
 474                 u32 map;
 475                 u32 unmap;
 476                 u32 allocate_buffer;
 477                 u32 free_buffer;
 478                 u32 flush;
 479                 u32 get_location;
 480                 u32 attributes;
 481                 u32 get_bar_attributes;
 482                 u32 set_bar_attributes;
 483                 u64 romsize;
 484                 u32 romimage;
 485         } mixed_mode;
 486 };
 487
 488 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001
 489 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002
 490 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004
 491 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008
 492 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010
 493 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020
 494 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040
 495 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080
 496 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100
 497 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200
 498 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400
 499 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800
 500 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000
 501 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000
 502 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000
 503 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000
 504 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000
 505 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000
 506 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000
 507
 508 struct efi_dev_path;
 509
 510 typedef union apple_properties_protocol apple_properties_protocol_t;
 511
 512 union apple_properties_protocol {
 513         struct {
 514                 unsigned long version;
 515                 efi_status_t (__efiapi *get)(apple_properties_protocol_t *,
 516                                              struct efi_dev_path *,
 517                                              efi_char16_t *, void *, u32 *);
 518                 efi_status_t (__efiapi *set)(apple_properties_protocol_t *,
 519                                              struct efi_dev_path *,
 520                                              efi_char16_t *, void *, u32);
 521                 efi_status_t (__efiapi *del)(apple_properties_protocol_t *,
 522                                              struct efi_dev_path *,
 523                                              efi_char16_t *);
 524                 efi_status_t (__efiapi *get_all)(apple_properties_protocol_t *,
 525                                                  void *buffer, u32 *);
 526         };
 527         struct {
 528                 u32 version;
 529                 u32 get;
 530                 u32 set;
 531                 u32 del;
 532                 u32 get_all;
 533         } mixed_mode;
 534 };
 535
 536 typedef u32 efi_tcg2_event_log_format;
 537
 538 typedef union efi_tcg2_protocol efi_tcg2_protocol_t;
 539
 540 union efi_tcg2_protocol {
 541         struct {
 542                 void *get_capability;
 543                 efi_status_t (__efiapi *get_event_log)(efi_handle_t,
 544                                                        efi_tcg2_event_log_format,
 545                                                        efi_physical_addr_t *,
 546                                                        efi_physical_addr_t *,
 547                                                        efi_bool_t *);
 548                 void *hash_log_extend_event;
 549                 void *submit_command;
 550                 void *get_active_pcr_banks;
 551                 void *set_active_pcr_banks;
 552                 void *get_result_of_set_active_pcr_banks;
 553         };
 554         struct {
 555                 u32 get_capability;
 556                 u32 get_event_log;
 557                 u32 hash_log_extend_event;
 558                 u32 submit_command;
 559                 u32 get_active_pcr_banks;
 560                 u32 set_active_pcr_banks;
 561                 u32 get_result_of_set_active_pcr_banks;
 562         } mixed_mode;
 563 };
 564
 565 typedef union efi_load_file_protocol efi_load_file_protocol_t;
 566 typedef union efi_load_file_protocol efi_load_file2_protocol_t;
 567
 568 union efi_load_file_protocol {
 569         struct {
 570                 efi_status_t (__efiapi *load_file)(efi_load_file_protocol_t *,
 571                                                    efi_device_path_protocol_t *,
 572                                                    bool, unsigned long *, void *);
 573         };
 574         struct {
 575                 u32 load_file;
 576         } mixed_mode;
 577 };
 578
 579 void efi_pci_disable_bridge_busmaster(void);
 580
 581 typedef efi_status_t (*efi_exit_boot_map_processing)(
 582         struct efi_boot_memmap *map,
 583         void *priv);
 584
 585 efi_status_t efi_exit_boot_services(void *handle,
 586                                     struct efi_boot_memmap *map,
 587                                     void *priv,
 588                                     efi_exit_boot_map_processing priv_func);
 589
 590 void efi_char16_printk(efi_char16_t *);
 591
 592 efi_status_t allocate_new_fdt_and_exit_boot(void *handle,
 593                                             unsigned long *new_fdt_addr,
 594                                             unsigned long max_addr,
 595                                             u64 initrd_addr, u64 initrd_size,
 596                                             char *cmdline_ptr,
 597                                             unsigned long fdt_addr,
 598                                             unsigned long fdt_size);
 599
 600 void *get_fdt(unsigned long *fdt_size);
 601
 602 void efi_get_virtmap(efi_memory_desc_t *memory_map, unsigned long map_size,
 603                      unsigned long desc_size, efi_memory_desc_t *runtime_map,
 604                      int *count);
 605
 606 efi_status_t efi_get_random_bytes(unsigned long size, u8 *out);
 607
 608 efi_status_t efi_random_alloc(unsigned long size, unsigned long align,
 609                               unsigned long *addr, unsigned long random_seed);
 610
 611 efi_status_t check_platform_features(void);
 612
 613 void *get_efi_config_table(efi_guid_t guid);
 614
 615 void efi_printk(char *str);
 616
 617 void efi_free(unsigned long size, unsigned long addr);
 618
 619 char *efi_convert_cmdline(efi_loaded_image_t *image, int *cmd_line_len,
 620                           unsigned long max_addr);
 621
 622 efi_status_t efi_get_memory_map(struct efi_boot_memmap *map);
 623
 624 efi_status_t efi_low_alloc_above(unsigned long size, unsigned long align,
 625                                  unsigned long *addr, unsigned long min);
 626
 627 static inline
 628 efi_status_t efi_low_alloc(unsigned long size, unsigned long align,
 629                            unsigned long *addr)
 630 {
 631         /*
 632          * Don't allocate at 0x0. It will confuse code that
 633          * checks pointers against NULL. Skip the first 8
 634          * bytes so we start at a nice even number.
 635          */
 636         return efi_low_alloc_above(size, align, addr, 0x8);
 637 }
 638
 639 efi_status_t efi_allocate_pages(unsigned long size, unsigned long *addr,
 640                                 unsigned long max);
 641
 642 efi_status_t efi_relocate_kernel(unsigned long *image_addr,
 643                                  unsigned long image_size,
 644                                  unsigned long alloc_size,
 645                                  unsigned long preferred_addr,
 646                                  unsigned long alignment,
 647                                  unsigned long min_addr);
 648
 649 efi_status_t efi_parse_options(char const *cmdline);
 650
 651 efi_status_t efi_setup_gop(struct screen_info *si, efi_guid_t *proto,
 652                            unsigned long size);
 653
 654 efi_status_t efi_load_dtb(efi_loaded_image_t *image,
 655                           unsigned long *load_addr,
 656                           unsigned long *load_size);
 657
 658 efi_status_t efi_load_initrd(efi_loaded_image_t *image,
 659                              unsigned long *load_addr,
 660                              unsigned long *load_size,
 661                              unsigned long soft_limit,
 662                              unsigned long hard_limit);
 663
 664 efi_status_t efi_load_initrd_dev_path(unsigned long *load_addr,
 665                                       unsigned long *load_size,
 666                                       unsigned long max);
 667
 668 #endif