5 * Extensible Firmware Interface
6 * Based on 'Extensible Firmware Interface Specification' version 0.9, April 30, 1999
8 * Copyright (C) 1999 VA Linux Systems
9 * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
10 * Copyright (C) 1999, 2002-2003 Hewlett-Packard Co.
11 * David Mosberger-Tang <davidm@hpl.hp.com>
12 * Stephane Eranian <eranian@hpl.hp.com>
14 #include <linux/init.h>
15 #include <linux/string.h>
16 #include <linux/time.h>
17 #include <linux/types.h>
18 #include <linux/proc_fs.h>
19 #include <linux/rtc.h>
20 #include <linux/ioport.h>
21 #include <linux/pfn.h>
22 #include <linux/pstore.h>
23 #include <linux/reboot.h>
24 #include <linux/uuid.h>
25 #include <linux/screen_info.h>
30 #define EFI_LOAD_ERROR ( 1 | (1UL << (BITS_PER_LONG-1)))
31 #define EFI_INVALID_PARAMETER ( 2 | (1UL << (BITS_PER_LONG-1)))
32 #define EFI_UNSUPPORTED ( 3 | (1UL << (BITS_PER_LONG-1)))
33 #define EFI_BAD_BUFFER_SIZE ( 4 | (1UL << (BITS_PER_LONG-1)))
34 #define EFI_BUFFER_TOO_SMALL ( 5 | (1UL << (BITS_PER_LONG-1)))
35 #define EFI_NOT_READY ( 6 | (1UL << (BITS_PER_LONG-1)))
36 #define EFI_DEVICE_ERROR ( 7 | (1UL << (BITS_PER_LONG-1)))
37 #define EFI_WRITE_PROTECTED ( 8 | (1UL << (BITS_PER_LONG-1)))
38 #define EFI_OUT_OF_RESOURCES ( 9 | (1UL << (BITS_PER_LONG-1)))
39 #define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG-1)))
40 #define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1)))
42 typedef unsigned long efi_status_t
;
43 typedef u8 efi_bool_t
;
44 typedef u16 efi_char16_t
; /* UNICODE character */
45 typedef u64 efi_physical_addr_t
;
46 typedef void *efi_handle_t
;
48 typedef uuid_le efi_guid_t
;
50 #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
51 UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)
54 * Generic EFI table header
65 * Memory map descriptor:
69 #define EFI_RESERVED_TYPE 0
70 #define EFI_LOADER_CODE 1
71 #define EFI_LOADER_DATA 2
72 #define EFI_BOOT_SERVICES_CODE 3
73 #define EFI_BOOT_SERVICES_DATA 4
74 #define EFI_RUNTIME_SERVICES_CODE 5
75 #define EFI_RUNTIME_SERVICES_DATA 6
76 #define EFI_CONVENTIONAL_MEMORY 7
77 #define EFI_UNUSABLE_MEMORY 8
78 #define EFI_ACPI_RECLAIM_MEMORY 9
79 #define EFI_ACPI_MEMORY_NVS 10
80 #define EFI_MEMORY_MAPPED_IO 11
81 #define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12
82 #define EFI_PAL_CODE 13
83 #define EFI_PERSISTENT_MEMORY 14
84 #define EFI_MAX_MEMORY_TYPE 15
86 /* Attribute values: */
87 #define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */
88 #define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */
89 #define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */
90 #define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */
91 #define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */
92 #define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */
93 #define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */
94 #define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */
95 #define EFI_MEMORY_NV ((u64)0x0000000000008000ULL) /* non-volatile */
96 #define EFI_MEMORY_MORE_RELIABLE \
97 ((u64)0x0000000000010000ULL) /* higher reliability */
98 #define EFI_MEMORY_RO ((u64)0x0000000000020000ULL) /* read-only */
99 #define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */
100 #define EFI_MEMORY_DESCRIPTOR_VERSION 1
102 #define EFI_PAGE_SHIFT 12
103 #define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT)
119 } efi_capsule_header_t
;
124 #define EFI_CAPSULE_PERSIST_ACROSS_RESET 0x00010000
125 #define EFI_CAPSULE_POPULATE_SYSTEM_TABLE 0x00020000
126 #define EFI_CAPSULE_INITIATE_RESET 0x00040000
129 * Allocation types for calls to boottime->allocate_pages.
131 #define EFI_ALLOCATE_ANY_PAGES 0
132 #define EFI_ALLOCATE_MAX_ADDRESS 1
133 #define EFI_ALLOCATE_ADDRESS 2
134 #define EFI_MAX_ALLOCATE_TYPE 3
136 typedef int (*efi_freemem_callback_t
) (u64 start
, u64 end
, void *arg
);
139 * Types and defines for Time Services
141 #define EFI_TIME_ADJUST_DAYLIGHT 0x1
142 #define EFI_TIME_IN_DAYLIGHT 0x2
143 #define EFI_UNSPECIFIED_TIMEZONE 0x07ff
180 u32 install_protocol_interface
;
181 u32 reinstall_protocol_interface
;
182 u32 uninstall_protocol_interface
;
185 u32 register_protocol_notify
;
187 u32 locate_device_path
;
188 u32 install_configuration_table
;
193 u32 exit_boot_services
;
194 u32 get_next_monotonic_count
;
196 u32 set_watchdog_timer
;
197 u32 connect_controller
;
198 u32 disconnect_controller
;
201 u32 open_protocol_information
;
202 u32 protocols_per_handle
;
203 u32 locate_handle_buffer
;
205 u32 install_multiple_protocol_interfaces
;
206 u32 uninstall_multiple_protocol_interfaces
;
211 } __packed efi_boot_services_32_t
;
228 u64 install_protocol_interface
;
229 u64 reinstall_protocol_interface
;
230 u64 uninstall_protocol_interface
;
233 u64 register_protocol_notify
;
235 u64 locate_device_path
;
236 u64 install_configuration_table
;
241 u64 exit_boot_services
;
242 u64 get_next_monotonic_count
;
244 u64 set_watchdog_timer
;
245 u64 connect_controller
;
246 u64 disconnect_controller
;
249 u64 open_protocol_information
;
250 u64 protocols_per_handle
;
251 u64 locate_handle_buffer
;
253 u64 install_multiple_protocol_interfaces
;
254 u64 uninstall_multiple_protocol_interfaces
;
259 } __packed efi_boot_services_64_t
;
262 * EFI Boot Services table
268 efi_status_t (*allocate_pages
)(int, int, unsigned long,
269 efi_physical_addr_t
*);
270 efi_status_t (*free_pages
)(efi_physical_addr_t
, unsigned long);
271 efi_status_t (*get_memory_map
)(unsigned long *, void *, unsigned long *,
272 unsigned long *, u32
*);
273 efi_status_t (*allocate_pool
)(int, unsigned long, void **);
274 efi_status_t (*free_pool
)(void *);
277 void *wait_for_event
;
281 void *install_protocol_interface
;
282 void *reinstall_protocol_interface
;
283 void *uninstall_protocol_interface
;
284 efi_status_t (*handle_protocol
)(efi_handle_t
, efi_guid_t
*, void **);
286 void *register_protocol_notify
;
287 efi_status_t (*locate_handle
)(int, efi_guid_t
*, void *,
288 unsigned long *, efi_handle_t
*);
289 void *locate_device_path
;
290 efi_status_t (*install_configuration_table
)(efi_guid_t
*, void *);
295 efi_status_t (*exit_boot_services
)(efi_handle_t
, unsigned long);
296 void *get_next_monotonic_count
;
298 void *set_watchdog_timer
;
299 void *connect_controller
;
300 void *disconnect_controller
;
302 void *close_protocol
;
303 void *open_protocol_information
;
304 void *protocols_per_handle
;
305 void *locate_handle_buffer
;
306 efi_status_t (*locate_protocol
)(efi_guid_t
*, void *, void **);
307 void *install_multiple_protocol_interfaces
;
308 void *uninstall_multiple_protocol_interfaces
;
309 void *calculate_crc32
;
312 void *create_event_ex
;
313 } efi_boot_services_t
;
320 EfiPciIoWidthFifoUint8
,
321 EfiPciIoWidthFifoUint16
,
322 EfiPciIoWidthFifoUint32
,
323 EfiPciIoWidthFifoUint64
,
324 EfiPciIoWidthFillUint8
,
325 EfiPciIoWidthFillUint16
,
326 EfiPciIoWidthFillUint32
,
327 EfiPciIoWidthFillUint64
,
329 } EFI_PCI_IO_PROTOCOL_WIDTH
;
332 EfiPciIoAttributeOperationGet
,
333 EfiPciIoAttributeOperationSet
,
334 EfiPciIoAttributeOperationEnable
,
335 EfiPciIoAttributeOperationDisable
,
336 EfiPciIoAttributeOperationSupported
,
337 EfiPciIoAttributeOperationMaximum
338 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION
;
343 } efi_pci_io_protocol_access_32_t
;
348 } efi_pci_io_protocol_access_64_t
;
353 } efi_pci_io_protocol_access_t
;
358 efi_pci_io_protocol_access_32_t mem
;
359 efi_pci_io_protocol_access_32_t io
;
360 efi_pci_io_protocol_access_32_t pci
;
369 u32 get_bar_attributes
;
370 u32 set_bar_attributes
;
373 } efi_pci_io_protocol_32
;
378 efi_pci_io_protocol_access_64_t mem
;
379 efi_pci_io_protocol_access_64_t io
;
380 efi_pci_io_protocol_access_64_t pci
;
389 u64 get_bar_attributes
;
390 u64 set_bar_attributes
;
393 } efi_pci_io_protocol_64
;
398 efi_pci_io_protocol_access_t mem
;
399 efi_pci_io_protocol_access_t io
;
400 efi_pci_io_protocol_access_t pci
;
404 void *allocate_buffer
;
409 void *get_bar_attributes
;
410 void *set_bar_attributes
;
413 } efi_pci_io_protocol
;
415 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001
416 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002
417 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004
418 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008
419 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010
420 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020
421 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040
422 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080
423 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100
424 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200
425 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400
426 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800
427 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000
428 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000
429 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000
430 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000
431 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000
432 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000
433 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000
436 * Types and defines for EFI ResetSystem
438 #define EFI_RESET_COLD 0
439 #define EFI_RESET_WARM 1
440 #define EFI_RESET_SHUTDOWN 2
443 * EFI Runtime Services table
445 #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL)
446 #define EFI_RUNTIME_SERVICES_REVISION 0x00010000
454 u32 set_virtual_address_map
;
457 u32 get_next_variable
;
459 u32 get_next_high_mono_count
;
462 u32 query_capsule_caps
;
463 u32 query_variable_info
;
464 } efi_runtime_services_32_t
;
472 u64 set_virtual_address_map
;
475 u64 get_next_variable
;
477 u64 get_next_high_mono_count
;
480 u64 query_capsule_caps
;
481 u64 query_variable_info
;
482 } efi_runtime_services_64_t
;
488 void *get_wakeup_time
;
489 void *set_wakeup_time
;
490 void *set_virtual_address_map
;
491 void *convert_pointer
;
493 void *get_next_variable
;
495 void *get_next_high_mono_count
;
497 void *update_capsule
;
498 void *query_capsule_caps
;
499 void *query_variable_info
;
500 } efi_runtime_services_t
;
502 typedef efi_status_t
efi_get_time_t (efi_time_t
*tm
, efi_time_cap_t
*tc
);
503 typedef efi_status_t
efi_set_time_t (efi_time_t
*tm
);
504 typedef efi_status_t
efi_get_wakeup_time_t (efi_bool_t
*enabled
, efi_bool_t
*pending
,
506 typedef efi_status_t
efi_set_wakeup_time_t (efi_bool_t enabled
, efi_time_t
*tm
);
507 typedef efi_status_t
efi_get_variable_t (efi_char16_t
*name
, efi_guid_t
*vendor
, u32
*attr
,
508 unsigned long *data_size
, void *data
);
509 typedef efi_status_t
efi_get_next_variable_t (unsigned long *name_size
, efi_char16_t
*name
,
511 typedef efi_status_t
efi_set_variable_t (efi_char16_t
*name
, efi_guid_t
*vendor
,
512 u32 attr
, unsigned long data_size
,
514 typedef efi_status_t
efi_get_next_high_mono_count_t (u32
*count
);
515 typedef void efi_reset_system_t (int reset_type
, efi_status_t status
,
516 unsigned long data_size
, efi_char16_t
*data
);
517 typedef efi_status_t
efi_set_virtual_address_map_t (unsigned long memory_map_size
,
518 unsigned long descriptor_size
,
519 u32 descriptor_version
,
520 efi_memory_desc_t
*virtual_map
);
521 typedef efi_status_t
efi_query_variable_info_t(u32 attr
,
523 u64
*remaining_space
,
524 u64
*max_variable_size
);
525 typedef efi_status_t
efi_update_capsule_t(efi_capsule_header_t
**capsules
,
527 unsigned long sg_list
);
528 typedef efi_status_t
efi_query_capsule_caps_t(efi_capsule_header_t
**capsules
,
532 typedef efi_status_t
efi_query_variable_store_t(u32 attributes
,
536 void efi_native_runtime_setup(void);
539 * EFI Configuration Table and GUID definitions
542 EFI_GUID(0x00000000, 0x0000, 0x0000, \
543 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
545 #define MPS_TABLE_GUID \
546 EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3, \
547 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
549 #define ACPI_TABLE_GUID \
550 EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, \
551 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
553 #define ACPI_20_TABLE_GUID \
554 EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, \
555 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81)
557 #define SMBIOS_TABLE_GUID \
558 EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, \
559 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
561 #define SMBIOS3_TABLE_GUID \
562 EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c, \
563 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94)
565 #define SAL_SYSTEM_TABLE_GUID \
566 EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3, \
567 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
569 #define HCDP_TABLE_GUID \
570 EFI_GUID(0xf951938d, 0x620b, 0x42ef, \
571 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98)
573 #define UGA_IO_PROTOCOL_GUID \
574 EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b, \
575 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2)
577 #define EFI_GLOBAL_VARIABLE_GUID \
578 EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, \
579 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c)
581 #define UV_SYSTEM_TABLE_GUID \
582 EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd, \
583 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93)
585 #define LINUX_EFI_CRASH_GUID \
586 EFI_GUID(0xcfc8fc79, 0xbe2e, 0x4ddc, \
587 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0)
589 #define LOADED_IMAGE_PROTOCOL_GUID \
590 EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, \
591 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
593 #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \
594 EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, \
595 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a)
597 #define EFI_UGA_PROTOCOL_GUID \
598 EFI_GUID(0x982c298b, 0xf4fa, 0x41cb, \
599 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39)
601 #define EFI_PCI_IO_PROTOCOL_GUID \
602 EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, \
603 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a)
605 #define EFI_FILE_INFO_ID \
606 EFI_GUID(0x9576e92, 0x6d3f, 0x11d2, \
607 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
609 #define EFI_SYSTEM_RESOURCE_TABLE_GUID \
610 EFI_GUID(0xb122a263, 0x3661, 0x4f68, \
611 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80)
613 #define EFI_FILE_SYSTEM_GUID \
614 EFI_GUID(0x964e5b22, 0x6459, 0x11d2, \
615 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
617 #define DEVICE_TREE_GUID \
618 EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, \
619 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0)
621 #define EFI_PROPERTIES_TABLE_GUID \
622 EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, \
623 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5)
625 #define EFI_RNG_PROTOCOL_GUID \
626 EFI_GUID(0x3152bca5, 0xeade, 0x433d, \
627 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44)
629 #define EFI_MEMORY_ATTRIBUTES_TABLE_GUID \
630 EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, \
631 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20)
633 #define EFI_CONSOLE_OUT_DEVICE_GUID \
634 EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4, \
635 0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
638 * This GUID is used to pass to the kernel proper the struct screen_info
639 * structure that was populated by the stub based on the GOP protocol instance
640 * associated with ConOut
642 #define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID \
643 EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, \
644 0xb9, 0xe, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95)
646 #define LINUX_EFI_LOADER_ENTRY_GUID \
647 EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, \
648 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f)
653 } efi_config_table_64_t
;
658 } efi_config_table_32_t
;
663 } efi_config_table_t
;
669 } efi_config_table_type_t
;
671 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
673 #define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30))
674 #define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20))
675 #define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10))
676 #define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00))
677 #define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10))
678 #define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02))
682 u64 fw_vendor
; /* physical addr of CHAR16 vendor string */
696 } efi_system_table_64_t
;
700 u32 fw_vendor
; /* physical addr of CHAR16 vendor string */
712 } efi_system_table_32_t
;
716 unsigned long fw_vendor
; /* physical addr of CHAR16 vendor string */
718 unsigned long con_in_handle
;
719 unsigned long con_in
;
720 unsigned long con_out_handle
;
721 unsigned long con_out
;
722 unsigned long stderr_handle
;
723 unsigned long stderr
;
724 efi_runtime_services_t
*runtime
;
725 efi_boot_services_t
*boottime
;
726 unsigned long nr_tables
;
727 unsigned long tables
;
728 } efi_system_table_t
;
730 struct efi_memory_map
{
731 phys_addr_t phys_map
;
735 unsigned long desc_version
;
736 unsigned long desc_size
;
739 struct efi_fdt_params
{
754 u32 load_options_size
;
757 __aligned_u64 image_size
;
758 unsigned int image_code_type
;
759 unsigned int image_data_type
;
760 unsigned long unload
;
761 } efi_loaded_image_32_t
;
770 u32 load_options_size
;
773 __aligned_u64 image_size
;
774 unsigned int image_code_type
;
775 unsigned int image_data_type
;
776 unsigned long unload
;
777 } efi_loaded_image_64_t
;
782 efi_system_table_t
*system_table
;
786 u32 load_options_size
;
789 __aligned_u64 image_size
;
790 unsigned int image_code_type
;
791 unsigned int image_data_type
;
792 unsigned long unload
;
793 } efi_loaded_image_t
;
800 efi_time_t create_time
;
801 efi_time_t last_access_time
;
802 efi_time_t modification_time
;
803 __aligned_u64 attribute
;
804 efi_char16_t filename
[1];
819 } efi_file_handle_32_t
;
833 } efi_file_handle_64_t
;
835 typedef struct _efi_file_handle
{
837 efi_status_t (*open
)(struct _efi_file_handle
*,
838 struct _efi_file_handle
**,
839 efi_char16_t
*, u64
, u64
);
840 efi_status_t (*close
)(struct _efi_file_handle
*);
842 efi_status_t (*read
)(struct _efi_file_handle
*, unsigned long *,
847 efi_status_t (*get_info
)(struct _efi_file_handle
*, efi_guid_t
*,
848 unsigned long *, void *);
853 typedef struct _efi_file_io_interface
{
855 int (*open_volume
)(struct _efi_file_io_interface
*,
856 efi_file_handle_t
**);
857 } efi_file_io_interface_t
;
859 #define EFI_FILE_MODE_READ 0x0000000000000001
860 #define EFI_FILE_MODE_WRITE 0x0000000000000002
861 #define EFI_FILE_MODE_CREATE 0x8000000000000000
866 u64 memory_protection_attribute
;
867 } efi_properties_table_t
;
869 #define EFI_PROPERTIES_TABLE_VERSION 0x00010000
870 #define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA 0x1
872 #define EFI_INVALID_TABLE_ADDR (~0UL)
879 efi_memory_desc_t entry
[0];
880 } efi_memory_attributes_table_t
;
883 * All runtime access to EFI goes through this structure:
886 efi_system_table_t
*systab
; /* EFI system table */
887 unsigned int runtime_version
; /* Runtime services version */
888 unsigned long mps
; /* MPS table */
889 unsigned long acpi
; /* ACPI table (IA64 ext 0.71) */
890 unsigned long acpi20
; /* ACPI table (ACPI 2.0) */
891 unsigned long smbios
; /* SMBIOS table (32 bit entry point) */
892 unsigned long smbios3
; /* SMBIOS table (64 bit entry point) */
893 unsigned long sal_systab
; /* SAL system table */
894 unsigned long boot_info
; /* boot info table */
895 unsigned long hcdp
; /* HCDP table */
896 unsigned long uga
; /* UGA table */
897 unsigned long uv_systab
; /* UV system table */
898 unsigned long fw_vendor
; /* fw_vendor */
899 unsigned long runtime
; /* runtime table */
900 unsigned long config_table
; /* config tables */
901 unsigned long esrt
; /* ESRT table */
902 unsigned long properties_table
; /* properties table */
903 unsigned long mem_attr_table
; /* memory attributes table */
904 efi_get_time_t
*get_time
;
905 efi_set_time_t
*set_time
;
906 efi_get_wakeup_time_t
*get_wakeup_time
;
907 efi_set_wakeup_time_t
*set_wakeup_time
;
908 efi_get_variable_t
*get_variable
;
909 efi_get_next_variable_t
*get_next_variable
;
910 efi_set_variable_t
*set_variable
;
911 efi_set_variable_t
*set_variable_nonblocking
;
912 efi_query_variable_info_t
*query_variable_info
;
913 efi_query_variable_info_t
*query_variable_info_nonblocking
;
914 efi_update_capsule_t
*update_capsule
;
915 efi_query_capsule_caps_t
*query_capsule_caps
;
916 efi_get_next_high_mono_count_t
*get_next_high_mono_count
;
917 efi_reset_system_t
*reset_system
;
918 efi_set_virtual_address_map_t
*set_virtual_address_map
;
919 struct efi_memory_map memmap
;
924 efi_guidcmp (efi_guid_t left
, efi_guid_t right
)
926 return memcmp(&left
, &right
, sizeof (efi_guid_t
));
930 efi_guid_to_str(efi_guid_t
*guid
, char *out
)
932 sprintf(out
, "%pUl", guid
->b
);
936 extern void efi_init (void);
937 extern void *efi_get_pal_addr (void);
938 extern void efi_map_pal_code (void);
939 extern void efi_memmap_walk (efi_freemem_callback_t callback
, void *arg
);
940 extern void efi_gettimeofday (struct timespec
*ts
);
941 extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */
943 extern void efi_late_init(void);
944 extern void efi_free_boot_services(void);
945 extern efi_status_t
efi_query_variable_store(u32 attributes
,
948 extern void efi_find_mirror(void);
950 static inline void efi_late_init(void) {}
951 static inline void efi_free_boot_services(void) {}
953 static inline efi_status_t
efi_query_variable_store(u32 attributes
,
960 extern void __iomem
*efi_lookup_mapped_addr(u64 phys_addr
);
961 extern int efi_config_init(efi_config_table_type_t
*arch_tables
);
962 #ifdef CONFIG_EFI_ESRT
963 extern void __init
efi_esrt_init(void);
965 static inline void efi_esrt_init(void) { }
967 extern int efi_config_parse_tables(void *config_tables
, int count
, int sz
,
968 efi_config_table_type_t
*arch_tables
);
969 extern u64
efi_get_iobase (void);
970 extern u32
efi_mem_type (unsigned long phys_addr
);
971 extern u64
efi_mem_attributes (unsigned long phys_addr
);
972 extern u64
efi_mem_attribute (unsigned long phys_addr
, unsigned long size
);
973 extern int __init
efi_uart_console_only (void);
974 extern u64
efi_mem_desc_end(efi_memory_desc_t
*md
);
975 extern int efi_mem_desc_lookup(u64 phys_addr
, efi_memory_desc_t
*out_md
);
976 extern void efi_initialize_iomem_resources(struct resource
*code_resource
,
977 struct resource
*data_resource
, struct resource
*bss_resource
);
978 extern void efi_get_time(struct timespec
*now
);
979 extern void efi_reserve_boot_services(void);
980 extern int efi_get_fdt_params(struct efi_fdt_params
*params
);
981 extern struct kobject
*efi_kobj
;
983 extern int efi_reboot_quirk_mode
;
984 extern bool efi_poweroff_required(void);
986 #ifdef CONFIG_EFI_FAKE_MEMMAP
987 extern void __init
efi_fake_memmap(void);
989 static inline void efi_fake_memmap(void) { }
993 * efi_memattr_perm_setter - arch specific callback function passed into
994 * efi_memattr_apply_permissions() that updates the
995 * mapping permissions described by the second
996 * argument in the page tables referred to by the
999 typedef int (*efi_memattr_perm_setter
)(struct mm_struct
*, efi_memory_desc_t
*);
1001 extern int efi_memattr_init(void);
1002 extern int efi_memattr_apply_permissions(struct mm_struct
*mm
,
1003 efi_memattr_perm_setter fn
);
1005 /* Iterate through an efi_memory_map */
1006 #define for_each_efi_memory_desc_in_map(m, md) \
1007 for ((md) = (m)->map; \
1008 ((void *)(md) + (m)->desc_size) <= (m)->map_end; \
1009 (md) = (void *)(md) + (m)->desc_size)
1012 * for_each_efi_memory_desc - iterate over descriptors in efi.memmap
1013 * @md: the efi_memory_desc_t * iterator
1015 * Once the loop finishes @md must not be accessed.
1017 #define for_each_efi_memory_desc(md) \
1018 for_each_efi_memory_desc_in_map(&efi.memmap, md)
1021 * Format an EFI memory descriptor's type and attributes to a user-provided
1022 * character buffer, as per snprintf(), and return the buffer.
1024 char * __init
efi_md_typeattr_format(char *buf
, size_t size
,
1025 const efi_memory_desc_t
*md
);
1028 * efi_range_is_wc - check the WC bit on an address range
1029 * @start: starting kvirt address
1030 * @len: length of range
1032 * Consult the EFI memory map and make sure it's ok to set this range WC.
1033 * Returns true or false.
1035 static inline int efi_range_is_wc(unsigned long start
, unsigned long len
)
1039 for (i
= 0; i
< len
; i
+= (1UL << EFI_PAGE_SHIFT
)) {
1040 unsigned long paddr
= __pa(start
+ i
);
1041 if (!(efi_mem_attributes(paddr
) & EFI_MEMORY_WC
))
1044 /* The range checked out */
1048 #ifdef CONFIG_EFI_PCDP
1049 extern int __init
efi_setup_pcdp_console(char *);
1053 * We play games with efi_enabled so that the compiler will, if
1054 * possible, remove EFI-related code altogether.
1056 #define EFI_BOOT 0 /* Were we booted from EFI? */
1057 #define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */
1058 #define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */
1059 #define EFI_MEMMAP 4 /* Can we use EFI memory map? */
1060 #define EFI_64BIT 5 /* Is the firmware 64-bit? */
1061 #define EFI_PARAVIRT 6 /* Access is via a paravirt interface */
1062 #define EFI_ARCH_1 7 /* First arch-specific bit */
1063 #define EFI_DBG 8 /* Print additional debug info at runtime */
1064 #define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */
1068 * Test whether the above EFI_* bits are enabled.
1070 static inline bool efi_enabled(int feature
)
1072 return test_bit(feature
, &efi
.flags
) != 0;
1074 extern void efi_reboot(enum reboot_mode reboot_mode
, const char *__unused
);
1076 static inline bool efi_enabled(int feature
)
1081 efi_reboot(enum reboot_mode reboot_mode
, const char *__unused
) {}
1084 efi_capsule_pending(int *reset_type
)
1090 extern int efi_status_to_err(efi_status_t status
);
1093 * Variable Attributes
1095 #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001
1096 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
1097 #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004
1098 #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008
1099 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010
1100 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
1101 #define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040
1103 #define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \
1104 EFI_VARIABLE_BOOTSERVICE_ACCESS | \
1105 EFI_VARIABLE_RUNTIME_ACCESS | \
1106 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \
1107 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \
1108 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \
1109 EFI_VARIABLE_APPEND_WRITE)
1111 * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee"))
1112 * not including trailing NUL
1114 #define EFI_VARIABLE_GUID_LEN UUID_STRING_LEN
1117 * The type of search to perform when calling boottime->locate_handle
1119 #define EFI_LOCATE_ALL_HANDLES 0
1120 #define EFI_LOCATE_BY_REGISTER_NOTIFY 1
1121 #define EFI_LOCATE_BY_PROTOCOL 2
1124 * EFI Device Path information
1126 #define EFI_DEV_HW 0x01
1127 #define EFI_DEV_PCI 1
1128 #define EFI_DEV_PCCARD 2
1129 #define EFI_DEV_MEM_MAPPED 3
1130 #define EFI_DEV_VENDOR 4
1131 #define EFI_DEV_CONTROLLER 5
1132 #define EFI_DEV_ACPI 0x02
1133 #define EFI_DEV_BASIC_ACPI 1
1134 #define EFI_DEV_EXPANDED_ACPI 2
1135 #define EFI_DEV_MSG 0x03
1136 #define EFI_DEV_MSG_ATAPI 1
1137 #define EFI_DEV_MSG_SCSI 2
1138 #define EFI_DEV_MSG_FC 3
1139 #define EFI_DEV_MSG_1394 4
1140 #define EFI_DEV_MSG_USB 5
1141 #define EFI_DEV_MSG_USB_CLASS 15
1142 #define EFI_DEV_MSG_I20 6
1143 #define EFI_DEV_MSG_MAC 11
1144 #define EFI_DEV_MSG_IPV4 12
1145 #define EFI_DEV_MSG_IPV6 13
1146 #define EFI_DEV_MSG_INFINIBAND 9
1147 #define EFI_DEV_MSG_UART 14
1148 #define EFI_DEV_MSG_VENDOR 10
1149 #define EFI_DEV_MEDIA 0x04
1150 #define EFI_DEV_MEDIA_HARD_DRIVE 1
1151 #define EFI_DEV_MEDIA_CDROM 2
1152 #define EFI_DEV_MEDIA_VENDOR 3
1153 #define EFI_DEV_MEDIA_FILE 4
1154 #define EFI_DEV_MEDIA_PROTOCOL 5
1155 #define EFI_DEV_BIOS_BOOT 0x05
1156 #define EFI_DEV_END_PATH 0x7F
1157 #define EFI_DEV_END_PATH2 0xFF
1158 #define EFI_DEV_END_INSTANCE 0x01
1159 #define EFI_DEV_END_ENTIRE 0xFF
1161 struct efi_generic_dev_path
{
1165 } __attribute ((packed
));
1167 static inline void memrange_efi_to_native(u64
*addr
, u64
*npages
)
1169 *npages
= PFN_UP(*addr
+ (*npages
<<EFI_PAGE_SHIFT
)) - PFN_DOWN(*addr
);
1174 * EFI Variable support.
1176 * Different firmware drivers can expose their EFI-like variables using
1180 struct efivar_operations
{
1181 efi_get_variable_t
*get_variable
;
1182 efi_get_next_variable_t
*get_next_variable
;
1183 efi_set_variable_t
*set_variable
;
1184 efi_set_variable_t
*set_variable_nonblocking
;
1185 efi_query_variable_store_t
*query_variable_store
;
1190 * ->lock protects two things:
1191 * 1) efivarfs_list and efivars_sysfs_list
1196 struct kobject
*kobject
;
1197 const struct efivar_operations
*ops
;
1201 * The maximum size of VariableName + Data = 1024
1202 * Therefore, it's reasonable to save that much
1203 * space in each part of the structure,
1204 * and we use a page for reading/writing.
1207 #define EFI_VAR_NAME_LEN 1024
1209 struct efi_variable
{
1210 efi_char16_t VariableName
[EFI_VAR_NAME_LEN
/sizeof(efi_char16_t
)];
1211 efi_guid_t VendorGuid
;
1212 unsigned long DataSize
;
1214 efi_status_t Status
;
1216 } __attribute__((packed
));
1218 struct efivar_entry
{
1219 struct efi_variable var
;
1220 struct list_head list
;
1221 struct kobject kobj
;
1226 struct efi_simple_text_output_protocol_32
{
1232 struct efi_simple_text_output_protocol_64
{
1238 struct efi_simple_text_output_protocol
{
1240 efi_status_t (*output_string
)(void *, void *);
1244 #define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0
1245 #define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1
1246 #define PIXEL_BIT_MASK 2
1247 #define PIXEL_BLT_ONLY 3
1248 #define PIXEL_FORMAT_MAX 4
1250 struct efi_pixel_bitmask
{
1257 struct efi_graphics_output_mode_info
{
1259 u32 horizontal_resolution
;
1260 u32 vertical_resolution
;
1262 struct efi_pixel_bitmask pixel_information
;
1263 u32 pixels_per_scan_line
;
1266 struct efi_graphics_output_protocol_mode_32
{
1271 u64 frame_buffer_base
;
1272 u32 frame_buffer_size
;
1275 struct efi_graphics_output_protocol_mode_64
{
1280 u64 frame_buffer_base
;
1281 u64 frame_buffer_size
;
1284 struct efi_graphics_output_protocol_mode
{
1288 unsigned long size_of_info
;
1289 u64 frame_buffer_base
;
1290 unsigned long frame_buffer_size
;
1293 struct efi_graphics_output_protocol_32
{
1300 struct efi_graphics_output_protocol_64
{
1307 struct efi_graphics_output_protocol
{
1308 unsigned long query_mode
;
1309 unsigned long set_mode
;
1311 struct efi_graphics_output_protocol_mode
*mode
;
1314 typedef efi_status_t (*efi_graphics_output_protocol_query_mode
)(
1315 struct efi_graphics_output_protocol
*, u32
, unsigned long *,
1316 struct efi_graphics_output_mode_info
**);
1318 extern struct list_head efivar_sysfs_list
;
1321 efivar_unregister(struct efivar_entry
*var
)
1323 kobject_put(&var
->kobj
);
1326 int efivars_register(struct efivars
*efivars
,
1327 const struct efivar_operations
*ops
,
1328 struct kobject
*kobject
);
1329 int efivars_unregister(struct efivars
*efivars
);
1330 struct kobject
*efivars_kobject(void);
1332 int efivar_init(int (*func
)(efi_char16_t
*, efi_guid_t
, unsigned long, void *),
1333 void *data
, bool duplicates
, struct list_head
*head
);
1335 void efivar_entry_add(struct efivar_entry
*entry
, struct list_head
*head
);
1336 void efivar_entry_remove(struct efivar_entry
*entry
);
1338 int __efivar_entry_delete(struct efivar_entry
*entry
);
1339 int efivar_entry_delete(struct efivar_entry
*entry
);
1341 int efivar_entry_size(struct efivar_entry
*entry
, unsigned long *size
);
1342 int __efivar_entry_get(struct efivar_entry
*entry
, u32
*attributes
,
1343 unsigned long *size
, void *data
);
1344 int efivar_entry_get(struct efivar_entry
*entry
, u32
*attributes
,
1345 unsigned long *size
, void *data
);
1346 int efivar_entry_set(struct efivar_entry
*entry
, u32 attributes
,
1347 unsigned long size
, void *data
, struct list_head
*head
);
1348 int efivar_entry_set_get_size(struct efivar_entry
*entry
, u32 attributes
,
1349 unsigned long *size
, void *data
, bool *set
);
1350 int efivar_entry_set_safe(efi_char16_t
*name
, efi_guid_t vendor
, u32 attributes
,
1351 bool block
, unsigned long size
, void *data
);
1353 void efivar_entry_iter_begin(void);
1354 void efivar_entry_iter_end(void);
1356 int __efivar_entry_iter(int (*func
)(struct efivar_entry
*, void *),
1357 struct list_head
*head
, void *data
,
1358 struct efivar_entry
**prev
);
1359 int efivar_entry_iter(int (*func
)(struct efivar_entry
*, void *),
1360 struct list_head
*head
, void *data
);
1362 struct efivar_entry
*efivar_entry_find(efi_char16_t
*name
, efi_guid_t guid
,
1363 struct list_head
*head
, bool remove
);
1365 bool efivar_validate(efi_guid_t vendor
, efi_char16_t
*var_name
, u8
*data
,
1366 unsigned long data_size
);
1367 bool efivar_variable_is_removable(efi_guid_t vendor
, const char *name
,
1370 extern struct work_struct efivar_work
;
1371 void efivar_run_worker(void);
1373 #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE)
1374 int efivars_sysfs_init(void);
1376 #define EFIVARS_DATA_SIZE_MAX 1024
1378 #endif /* CONFIG_EFI_VARS */
1379 extern bool efi_capsule_pending(int *reset_type
);
1381 extern int efi_capsule_supported(efi_guid_t guid
, u32 flags
,
1382 size_t size
, int *reset
);
1384 extern int efi_capsule_update(efi_capsule_header_t
*capsule
,
1385 struct page
**pages
);
1387 #ifdef CONFIG_EFI_RUNTIME_MAP
1388 int efi_runtime_map_init(struct kobject
*);
1389 void efi_runtime_map_setup(void *, int, u32
);
1390 int efi_get_runtime_map_size(void);
1391 int efi_get_runtime_map_desc_size(void);
1392 int efi_runtime_map_copy(void *buf
, size_t bufsz
);
1394 static inline int efi_runtime_map_init(struct kobject
*kobj
)
1400 efi_runtime_map_setup(void *map
, int nr_entries
, u32 desc_size
) {}
1402 static inline int efi_get_runtime_map_size(void)
1407 static inline int efi_get_runtime_map_desc_size(void)
1412 static inline int efi_runtime_map_copy(void *buf
, size_t bufsz
)
1419 /* prototypes shared between arch specific and generic stub code */
1421 #define pr_efi(sys_table, msg) efi_printk(sys_table, "EFI stub: "msg)
1422 #define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg)
1424 void efi_printk(efi_system_table_t
*sys_table_arg
, char *str
);
1426 void efi_free(efi_system_table_t
*sys_table_arg
, unsigned long size
,
1427 unsigned long addr
);
1429 char *efi_convert_cmdline(efi_system_table_t
*sys_table_arg
,
1430 efi_loaded_image_t
*image
, int *cmd_line_len
);
1432 efi_status_t
efi_get_memory_map(efi_system_table_t
*sys_table_arg
,
1433 efi_memory_desc_t
**map
,
1434 unsigned long *map_size
,
1435 unsigned long *desc_size
,
1437 unsigned long *key_ptr
);
1439 efi_status_t
efi_low_alloc(efi_system_table_t
*sys_table_arg
,
1440 unsigned long size
, unsigned long align
,
1441 unsigned long *addr
);
1443 efi_status_t
efi_high_alloc(efi_system_table_t
*sys_table_arg
,
1444 unsigned long size
, unsigned long align
,
1445 unsigned long *addr
, unsigned long max
);
1447 efi_status_t
efi_relocate_kernel(efi_system_table_t
*sys_table_arg
,
1448 unsigned long *image_addr
,
1449 unsigned long image_size
,
1450 unsigned long alloc_size
,
1451 unsigned long preferred_addr
,
1452 unsigned long alignment
);
1454 efi_status_t
handle_cmdline_files(efi_system_table_t
*sys_table_arg
,
1455 efi_loaded_image_t
*image
,
1456 char *cmd_line
, char *option_string
,
1457 unsigned long max_addr
,
1458 unsigned long *load_addr
,
1459 unsigned long *load_size
);
1461 efi_status_t
efi_parse_options(char *cmdline
);
1463 efi_status_t
efi_setup_gop(efi_system_table_t
*sys_table_arg
,
1464 struct screen_info
*si
, efi_guid_t
*proto
,
1465 unsigned long size
);
1467 bool efi_runtime_disabled(void);
1468 #endif /* _LINUX_EFI_H */