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/range.h>
24 #include <linux/reboot.h>
25 #include <linux/uuid.h>
26 #include <linux/screen_info.h>
31 #define EFI_LOAD_ERROR ( 1 | (1UL << (BITS_PER_LONG-1)))
32 #define EFI_INVALID_PARAMETER ( 2 | (1UL << (BITS_PER_LONG-1)))
33 #define EFI_UNSUPPORTED ( 3 | (1UL << (BITS_PER_LONG-1)))
34 #define EFI_BAD_BUFFER_SIZE ( 4 | (1UL << (BITS_PER_LONG-1)))
35 #define EFI_BUFFER_TOO_SMALL ( 5 | (1UL << (BITS_PER_LONG-1)))
36 #define EFI_NOT_READY ( 6 | (1UL << (BITS_PER_LONG-1)))
37 #define EFI_DEVICE_ERROR ( 7 | (1UL << (BITS_PER_LONG-1)))
38 #define EFI_WRITE_PROTECTED ( 8 | (1UL << (BITS_PER_LONG-1)))
39 #define EFI_OUT_OF_RESOURCES ( 9 | (1UL << (BITS_PER_LONG-1)))
40 #define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG-1)))
41 #define EFI_ABORTED (21 | (1UL << (BITS_PER_LONG-1)))
42 #define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1)))
44 typedef unsigned long efi_status_t
;
45 typedef u8 efi_bool_t
;
46 typedef u16 efi_char16_t
; /* UNICODE character */
47 typedef u64 efi_physical_addr_t
;
48 typedef void *efi_handle_t
;
50 typedef uuid_le efi_guid_t
;
52 #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
53 UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)
56 * Generic EFI table header
67 * Memory map descriptor:
71 #define EFI_RESERVED_TYPE 0
72 #define EFI_LOADER_CODE 1
73 #define EFI_LOADER_DATA 2
74 #define EFI_BOOT_SERVICES_CODE 3
75 #define EFI_BOOT_SERVICES_DATA 4
76 #define EFI_RUNTIME_SERVICES_CODE 5
77 #define EFI_RUNTIME_SERVICES_DATA 6
78 #define EFI_CONVENTIONAL_MEMORY 7
79 #define EFI_UNUSABLE_MEMORY 8
80 #define EFI_ACPI_RECLAIM_MEMORY 9
81 #define EFI_ACPI_MEMORY_NVS 10
82 #define EFI_MEMORY_MAPPED_IO 11
83 #define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12
84 #define EFI_PAL_CODE 13
85 #define EFI_PERSISTENT_MEMORY 14
86 #define EFI_MAX_MEMORY_TYPE 15
88 /* Attribute values: */
89 #define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */
90 #define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */
91 #define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */
92 #define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */
93 #define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */
94 #define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */
95 #define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */
96 #define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */
97 #define EFI_MEMORY_NV ((u64)0x0000000000008000ULL) /* non-volatile */
98 #define EFI_MEMORY_MORE_RELIABLE \
99 ((u64)0x0000000000010000ULL) /* higher reliability */
100 #define EFI_MEMORY_RO ((u64)0x0000000000020000ULL) /* read-only */
101 #define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */
102 #define EFI_MEMORY_DESCRIPTOR_VERSION 1
104 #define EFI_PAGE_SHIFT 12
105 #define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT)
106 #define EFI_PAGES_MAX (U64_MAX >> EFI_PAGE_SHIFT)
122 } efi_capsule_header_t
;
124 struct efi_boot_memmap
{
125 efi_memory_desc_t
**map
;
126 unsigned long *map_size
;
127 unsigned long *desc_size
;
129 unsigned long *key_ptr
;
130 unsigned long *buff_size
;
136 #define EFI_CAPSULE_PERSIST_ACROSS_RESET 0x00010000
137 #define EFI_CAPSULE_POPULATE_SYSTEM_TABLE 0x00020000
138 #define EFI_CAPSULE_INITIATE_RESET 0x00040000
140 struct capsule_info
{
141 efi_capsule_header_t header
;
147 size_t page_bytes_remain
;
150 int __efi_capsule_setup_info(struct capsule_info
*cap_info
);
153 * Allocation types for calls to boottime->allocate_pages.
155 #define EFI_ALLOCATE_ANY_PAGES 0
156 #define EFI_ALLOCATE_MAX_ADDRESS 1
157 #define EFI_ALLOCATE_ADDRESS 2
158 #define EFI_MAX_ALLOCATE_TYPE 3
160 typedef int (*efi_freemem_callback_t
) (u64 start
, u64 end
, void *arg
);
163 * Types and defines for Time Services
165 #define EFI_TIME_ADJUST_DAYLIGHT 0x1
166 #define EFI_TIME_IN_DAYLIGHT 0x2
167 #define EFI_UNSPECIFIED_TIMEZONE 0x07ff
204 u32 install_protocol_interface
;
205 u32 reinstall_protocol_interface
;
206 u32 uninstall_protocol_interface
;
209 u32 register_protocol_notify
;
211 u32 locate_device_path
;
212 u32 install_configuration_table
;
217 u32 exit_boot_services
;
218 u32 get_next_monotonic_count
;
220 u32 set_watchdog_timer
;
221 u32 connect_controller
;
222 u32 disconnect_controller
;
225 u32 open_protocol_information
;
226 u32 protocols_per_handle
;
227 u32 locate_handle_buffer
;
229 u32 install_multiple_protocol_interfaces
;
230 u32 uninstall_multiple_protocol_interfaces
;
235 } __packed efi_boot_services_32_t
;
252 u64 install_protocol_interface
;
253 u64 reinstall_protocol_interface
;
254 u64 uninstall_protocol_interface
;
257 u64 register_protocol_notify
;
259 u64 locate_device_path
;
260 u64 install_configuration_table
;
265 u64 exit_boot_services
;
266 u64 get_next_monotonic_count
;
268 u64 set_watchdog_timer
;
269 u64 connect_controller
;
270 u64 disconnect_controller
;
273 u64 open_protocol_information
;
274 u64 protocols_per_handle
;
275 u64 locate_handle_buffer
;
277 u64 install_multiple_protocol_interfaces
;
278 u64 uninstall_multiple_protocol_interfaces
;
283 } __packed efi_boot_services_64_t
;
286 * EFI Boot Services table
292 efi_status_t (*allocate_pages
)(int, int, unsigned long,
293 efi_physical_addr_t
*);
294 efi_status_t (*free_pages
)(efi_physical_addr_t
, unsigned long);
295 efi_status_t (*get_memory_map
)(unsigned long *, void *, unsigned long *,
296 unsigned long *, u32
*);
297 efi_status_t (*allocate_pool
)(int, unsigned long, void **);
298 efi_status_t (*free_pool
)(void *);
301 void *wait_for_event
;
305 void *install_protocol_interface
;
306 void *reinstall_protocol_interface
;
307 void *uninstall_protocol_interface
;
308 efi_status_t (*handle_protocol
)(efi_handle_t
, efi_guid_t
*, void **);
310 void *register_protocol_notify
;
311 efi_status_t (*locate_handle
)(int, efi_guid_t
*, void *,
312 unsigned long *, efi_handle_t
*);
313 void *locate_device_path
;
314 efi_status_t (*install_configuration_table
)(efi_guid_t
*, void *);
319 efi_status_t (*exit_boot_services
)(efi_handle_t
, unsigned long);
320 void *get_next_monotonic_count
;
322 void *set_watchdog_timer
;
323 void *connect_controller
;
324 void *disconnect_controller
;
326 void *close_protocol
;
327 void *open_protocol_information
;
328 void *protocols_per_handle
;
329 void *locate_handle_buffer
;
330 efi_status_t (*locate_protocol
)(efi_guid_t
*, void *, void **);
331 void *install_multiple_protocol_interfaces
;
332 void *uninstall_multiple_protocol_interfaces
;
333 void *calculate_crc32
;
336 void *create_event_ex
;
337 } efi_boot_services_t
;
344 EfiPciIoWidthFifoUint8
,
345 EfiPciIoWidthFifoUint16
,
346 EfiPciIoWidthFifoUint32
,
347 EfiPciIoWidthFifoUint64
,
348 EfiPciIoWidthFillUint8
,
349 EfiPciIoWidthFillUint16
,
350 EfiPciIoWidthFillUint32
,
351 EfiPciIoWidthFillUint64
,
353 } EFI_PCI_IO_PROTOCOL_WIDTH
;
356 EfiPciIoAttributeOperationGet
,
357 EfiPciIoAttributeOperationSet
,
358 EfiPciIoAttributeOperationEnable
,
359 EfiPciIoAttributeOperationDisable
,
360 EfiPciIoAttributeOperationSupported
,
361 EfiPciIoAttributeOperationMaximum
362 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION
;
367 } efi_pci_io_protocol_access_32_t
;
372 } efi_pci_io_protocol_access_64_t
;
377 } efi_pci_io_protocol_access_t
;
382 efi_pci_io_protocol_access_32_t mem
;
383 efi_pci_io_protocol_access_32_t io
;
384 efi_pci_io_protocol_access_32_t pci
;
393 u32 get_bar_attributes
;
394 u32 set_bar_attributes
;
397 } efi_pci_io_protocol_32
;
402 efi_pci_io_protocol_access_64_t mem
;
403 efi_pci_io_protocol_access_64_t io
;
404 efi_pci_io_protocol_access_64_t pci
;
413 u64 get_bar_attributes
;
414 u64 set_bar_attributes
;
417 } efi_pci_io_protocol_64
;
422 efi_pci_io_protocol_access_t mem
;
423 efi_pci_io_protocol_access_t io
;
424 efi_pci_io_protocol_access_t pci
;
428 void *allocate_buffer
;
433 void *get_bar_attributes
;
434 void *set_bar_attributes
;
437 } efi_pci_io_protocol
;
439 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001
440 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002
441 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004
442 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008
443 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010
444 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020
445 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040
446 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080
447 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100
448 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200
449 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400
450 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800
451 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000
452 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000
453 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000
454 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000
455 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000
456 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000
457 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000
465 } apple_properties_protocol_32_t
;
473 } apple_properties_protocol_64_t
;
476 * Types and defines for EFI ResetSystem
478 #define EFI_RESET_COLD 0
479 #define EFI_RESET_WARM 1
480 #define EFI_RESET_SHUTDOWN 2
483 * EFI Runtime Services table
485 #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL)
486 #define EFI_RUNTIME_SERVICES_REVISION 0x00010000
494 u32 set_virtual_address_map
;
497 u32 get_next_variable
;
499 u32 get_next_high_mono_count
;
502 u32 query_capsule_caps
;
503 u32 query_variable_info
;
504 } efi_runtime_services_32_t
;
512 u64 set_virtual_address_map
;
515 u64 get_next_variable
;
517 u64 get_next_high_mono_count
;
520 u64 query_capsule_caps
;
521 u64 query_variable_info
;
522 } efi_runtime_services_64_t
;
524 typedef efi_status_t
efi_get_time_t (efi_time_t
*tm
, efi_time_cap_t
*tc
);
525 typedef efi_status_t
efi_set_time_t (efi_time_t
*tm
);
526 typedef efi_status_t
efi_get_wakeup_time_t (efi_bool_t
*enabled
, efi_bool_t
*pending
,
528 typedef efi_status_t
efi_set_wakeup_time_t (efi_bool_t enabled
, efi_time_t
*tm
);
529 typedef efi_status_t
efi_get_variable_t (efi_char16_t
*name
, efi_guid_t
*vendor
, u32
*attr
,
530 unsigned long *data_size
, void *data
);
531 typedef efi_status_t
efi_get_next_variable_t (unsigned long *name_size
, efi_char16_t
*name
,
533 typedef efi_status_t
efi_set_variable_t (efi_char16_t
*name
, efi_guid_t
*vendor
,
534 u32 attr
, unsigned long data_size
,
536 typedef efi_status_t
efi_get_next_high_mono_count_t (u32
*count
);
537 typedef void efi_reset_system_t (int reset_type
, efi_status_t status
,
538 unsigned long data_size
, efi_char16_t
*data
);
539 typedef efi_status_t
efi_set_virtual_address_map_t (unsigned long memory_map_size
,
540 unsigned long descriptor_size
,
541 u32 descriptor_version
,
542 efi_memory_desc_t
*virtual_map
);
543 typedef efi_status_t
efi_query_variable_info_t(u32 attr
,
545 u64
*remaining_space
,
546 u64
*max_variable_size
);
547 typedef efi_status_t
efi_update_capsule_t(efi_capsule_header_t
**capsules
,
549 unsigned long sg_list
);
550 typedef efi_status_t
efi_query_capsule_caps_t(efi_capsule_header_t
**capsules
,
554 typedef efi_status_t
efi_query_variable_store_t(u32 attributes
,
560 efi_get_time_t
*get_time
;
561 efi_set_time_t
*set_time
;
562 efi_get_wakeup_time_t
*get_wakeup_time
;
563 efi_set_wakeup_time_t
*set_wakeup_time
;
564 efi_set_virtual_address_map_t
*set_virtual_address_map
;
565 void *convert_pointer
;
566 efi_get_variable_t
*get_variable
;
567 efi_get_next_variable_t
*get_next_variable
;
568 efi_set_variable_t
*set_variable
;
569 efi_get_next_high_mono_count_t
*get_next_high_mono_count
;
570 efi_reset_system_t
*reset_system
;
571 efi_update_capsule_t
*update_capsule
;
572 efi_query_capsule_caps_t
*query_capsule_caps
;
573 efi_query_variable_info_t
*query_variable_info
;
574 } efi_runtime_services_t
;
576 void efi_native_runtime_setup(void);
579 * EFI Configuration Table and GUID definitions
581 * These are all defined in a single line to make them easier to
582 * grep for and to see them at a glance - while still having a
583 * similar structure to the definitions in the spec.
585 * Here's how they are structured:
587 * GUID: 12345678-1234-1234-1234-123456789012
589 * #define EFI_SOME_PROTOCOL_GUID \
590 * {0x12345678,0x1234,0x1234,\
591 * {0x12,0x34,0x12,0x34,0x56,0x78,0x90,0x12}}
593 * #define SOME_PROTOCOL_GUID EFI_GUID(0x12345678, 0x1234, 0x1234, 0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12)
594 * ^ tabs ^extra space
596 * Note that the 'extra space' separates the values at the same place
597 * where the UEFI SPEC breaks the line.
599 #define NULL_GUID EFI_GUID(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
600 #define MPS_TABLE_GUID EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
601 #define ACPI_TABLE_GUID EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
602 #define ACPI_20_TABLE_GUID EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81)
603 #define SMBIOS_TABLE_GUID EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
604 #define SMBIOS3_TABLE_GUID EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c, 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94)
605 #define SAL_SYSTEM_TABLE_GUID EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
606 #define HCDP_TABLE_GUID EFI_GUID(0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98)
607 #define UGA_IO_PROTOCOL_GUID EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2)
608 #define EFI_GLOBAL_VARIABLE_GUID EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c)
609 #define UV_SYSTEM_TABLE_GUID EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93)
610 #define LINUX_EFI_CRASH_GUID EFI_GUID(0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0)
611 #define LOADED_IMAGE_PROTOCOL_GUID EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
612 #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a)
613 #define EFI_UGA_PROTOCOL_GUID EFI_GUID(0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39)
614 #define EFI_PCI_IO_PROTOCOL_GUID EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a)
615 #define EFI_FILE_INFO_ID EFI_GUID(0x09576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
616 #define EFI_SYSTEM_RESOURCE_TABLE_GUID EFI_GUID(0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80)
617 #define EFI_FILE_SYSTEM_GUID EFI_GUID(0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
618 #define DEVICE_TREE_GUID EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0)
619 #define EFI_PROPERTIES_TABLE_GUID EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5)
620 #define EFI_RNG_PROTOCOL_GUID EFI_GUID(0x3152bca5, 0xeade, 0x433d, 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44)
621 #define EFI_RNG_ALGORITHM_RAW EFI_GUID(0xe43176d7, 0xb6e8, 0x4827, 0xb7, 0x84, 0x7f, 0xfd, 0xc4, 0xb6, 0x85, 0x61)
622 #define EFI_MEMORY_ATTRIBUTES_TABLE_GUID EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20)
623 #define EFI_CONSOLE_OUT_DEVICE_GUID EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4, 0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
624 #define APPLE_PROPERTIES_PROTOCOL_GUID EFI_GUID(0x91bd12fe, 0xf6c3, 0x44fb, 0xa5, 0xb7, 0x51, 0x22, 0xab, 0x30, 0x3a, 0xe0)
626 #define EFI_IMAGE_SECURITY_DATABASE_GUID EFI_GUID(0xd719b2cb, 0x3d3a, 0x4596, 0xa3, 0xbc, 0xda, 0xd0, 0x0e, 0x67, 0x65, 0x6f)
627 #define EFI_SHIM_LOCK_GUID EFI_GUID(0x605dab50, 0xe046, 0x4300, 0xab, 0xb6, 0x3d, 0xd8, 0x10, 0xdd, 0x8b, 0x23)
629 #define EFI_CERT_SHA256_GUID EFI_GUID(0xc1c41626, 0x504c, 0x4092, 0xac, 0xa9, 0x41, 0xf9, 0x36, 0x93, 0x43, 0x28)
630 #define EFI_CERT_X509_GUID EFI_GUID(0xa5c059a1, 0x94e4, 0x4aa7, 0x87, 0xb5, 0xab, 0x15, 0x5c, 0x2b, 0xf0, 0x72)
631 #define EFI_CERT_X509_SHA256_GUID EFI_GUID(0x3bd2a492, 0x96c0, 0x4079, 0xb4, 0x20, 0xfc, 0xf9, 0x8e, 0xf1, 0x03, 0xed)
634 * This GUID is used to pass to the kernel proper the struct screen_info
635 * structure that was populated by the stub based on the GOP protocol instance
636 * associated with ConOut
638 #define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, 0xb9, 0x0e, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95)
639 #define LINUX_EFI_LOADER_ENTRY_GUID EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f)
640 #define LINUX_EFI_RANDOM_SEED_TABLE_GUID EFI_GUID(0x1ce1e5bc, 0x7ceb, 0x42f2, 0x81, 0xe5, 0x8a, 0xad, 0xf1, 0x80, 0xf5, 0x7b)
645 } efi_config_table_64_t
;
650 } efi_config_table_32_t
;
655 } efi_config_table_t
;
661 } efi_config_table_type_t
;
663 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
665 #define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30))
666 #define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20))
667 #define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10))
668 #define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00))
669 #define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10))
670 #define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02))
674 u64 fw_vendor
; /* physical addr of CHAR16 vendor string */
688 } efi_system_table_64_t
;
692 u32 fw_vendor
; /* physical addr of CHAR16 vendor string */
704 } efi_system_table_32_t
;
708 unsigned long fw_vendor
; /* physical addr of CHAR16 vendor string */
710 unsigned long con_in_handle
;
711 unsigned long con_in
;
712 unsigned long con_out_handle
;
713 unsigned long con_out
;
714 unsigned long stderr_handle
;
715 unsigned long stderr
;
716 efi_runtime_services_t
*runtime
;
717 efi_boot_services_t
*boottime
;
718 unsigned long nr_tables
;
719 unsigned long tables
;
720 } efi_system_table_t
;
723 * Architecture independent structure for describing a memory map for the
724 * benefit of efi_memmap_init_early(), saving us the need to pass four
727 struct efi_memory_map_data
{
728 phys_addr_t phys_map
;
730 unsigned long desc_version
;
731 unsigned long desc_size
;
734 struct efi_memory_map
{
735 phys_addr_t phys_map
;
739 unsigned long desc_version
;
740 unsigned long desc_size
;
744 struct efi_mem_range
{
749 struct efi_fdt_params
{
764 u32 load_options_size
;
767 __aligned_u64 image_size
;
768 unsigned int image_code_type
;
769 unsigned int image_data_type
;
770 unsigned long unload
;
771 } efi_loaded_image_32_t
;
780 u32 load_options_size
;
783 __aligned_u64 image_size
;
784 unsigned int image_code_type
;
785 unsigned int image_data_type
;
786 unsigned long unload
;
787 } efi_loaded_image_64_t
;
792 efi_system_table_t
*system_table
;
796 u32 load_options_size
;
799 __aligned_u64 image_size
;
800 unsigned int image_code_type
;
801 unsigned int image_data_type
;
802 unsigned long unload
;
803 } efi_loaded_image_t
;
810 efi_time_t create_time
;
811 efi_time_t last_access_time
;
812 efi_time_t modification_time
;
813 __aligned_u64 attribute
;
814 efi_char16_t filename
[1];
829 } efi_file_handle_32_t
;
843 } efi_file_handle_64_t
;
845 typedef struct _efi_file_handle
{
847 efi_status_t (*open
)(struct _efi_file_handle
*,
848 struct _efi_file_handle
**,
849 efi_char16_t
*, u64
, u64
);
850 efi_status_t (*close
)(struct _efi_file_handle
*);
852 efi_status_t (*read
)(struct _efi_file_handle
*, unsigned long *,
857 efi_status_t (*get_info
)(struct _efi_file_handle
*, efi_guid_t
*,
858 unsigned long *, void *);
863 typedef struct _efi_file_io_interface
{
865 int (*open_volume
)(struct _efi_file_io_interface
*,
866 efi_file_handle_t
**);
867 } efi_file_io_interface_t
;
869 #define EFI_FILE_MODE_READ 0x0000000000000001
870 #define EFI_FILE_MODE_WRITE 0x0000000000000002
871 #define EFI_FILE_MODE_CREATE 0x8000000000000000
876 u64 memory_protection_attribute
;
877 } efi_properties_table_t
;
879 #define EFI_PROPERTIES_TABLE_VERSION 0x00010000
880 #define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA 0x1
882 #define EFI_INVALID_TABLE_ADDR (~0UL)
889 efi_memory_desc_t entry
[0];
890 } efi_memory_attributes_table_t
;
893 efi_guid_t signature_owner
;
895 } efi_signature_data_t
;
898 efi_guid_t signature_type
;
899 u32 signature_list_size
;
900 u32 signature_header_size
;
902 u8 signature_header
[];
903 /* efi_signature_data_t signatures[][] */
904 } efi_signature_list_t
;
906 typedef u8 efi_sha256_hash_t
[32];
909 efi_sha256_hash_t to_be_signed_hash
;
910 efi_time_t time_of_revocation
;
911 } efi_cert_x509_sha256_t
;
914 * All runtime access to EFI goes through this structure:
917 efi_system_table_t
*systab
; /* EFI system table */
918 unsigned int runtime_version
; /* Runtime services version */
919 unsigned long mps
; /* MPS table */
920 unsigned long acpi
; /* ACPI table (IA64 ext 0.71) */
921 unsigned long acpi20
; /* ACPI table (ACPI 2.0) */
922 unsigned long smbios
; /* SMBIOS table (32 bit entry point) */
923 unsigned long smbios3
; /* SMBIOS table (64 bit entry point) */
924 unsigned long sal_systab
; /* SAL system table */
925 unsigned long boot_info
; /* boot info table */
926 unsigned long hcdp
; /* HCDP table */
927 unsigned long uga
; /* UGA table */
928 unsigned long uv_systab
; /* UV system table */
929 unsigned long fw_vendor
; /* fw_vendor */
930 unsigned long runtime
; /* runtime table */
931 unsigned long config_table
; /* config tables */
932 unsigned long esrt
; /* ESRT table */
933 unsigned long properties_table
; /* properties table */
934 unsigned long mem_attr_table
; /* memory attributes table */
935 unsigned long rng_seed
; /* UEFI firmware random seed */
936 efi_get_time_t
*get_time
;
937 efi_set_time_t
*set_time
;
938 efi_get_wakeup_time_t
*get_wakeup_time
;
939 efi_set_wakeup_time_t
*set_wakeup_time
;
940 efi_get_variable_t
*get_variable
;
941 efi_get_next_variable_t
*get_next_variable
;
942 efi_set_variable_t
*set_variable
;
943 efi_set_variable_t
*set_variable_nonblocking
;
944 efi_query_variable_info_t
*query_variable_info
;
945 efi_query_variable_info_t
*query_variable_info_nonblocking
;
946 efi_update_capsule_t
*update_capsule
;
947 efi_query_capsule_caps_t
*query_capsule_caps
;
948 efi_get_next_high_mono_count_t
*get_next_high_mono_count
;
949 efi_reset_system_t
*reset_system
;
950 efi_set_virtual_address_map_t
*set_virtual_address_map
;
951 struct efi_memory_map memmap
;
956 efi_guidcmp (efi_guid_t left
, efi_guid_t right
)
958 return memcmp(&left
, &right
, sizeof (efi_guid_t
));
962 efi_guid_to_str(efi_guid_t
*guid
, char *out
)
964 sprintf(out
, "%pUl", guid
->b
);
968 extern void efi_init (void);
969 extern void *efi_get_pal_addr (void);
970 extern void efi_map_pal_code (void);
971 extern void efi_memmap_walk (efi_freemem_callback_t callback
, void *arg
);
972 extern void efi_gettimeofday (struct timespec64
*ts
);
973 extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */
975 extern void efi_late_init(void);
976 extern void efi_free_boot_services(void);
977 extern efi_status_t
efi_query_variable_store(u32 attributes
,
980 extern void efi_find_mirror(void);
982 static inline void efi_late_init(void) {}
983 static inline void efi_free_boot_services(void) {}
985 static inline efi_status_t
efi_query_variable_store(u32 attributes
,
992 extern void __iomem
*efi_lookup_mapped_addr(u64 phys_addr
);
994 extern phys_addr_t __init
efi_memmap_alloc(unsigned int num_entries
);
995 extern int __init
efi_memmap_init_early(struct efi_memory_map_data
*data
);
996 extern int __init
efi_memmap_init_late(phys_addr_t addr
, unsigned long size
);
997 extern void __init
efi_memmap_unmap(void);
998 extern int __init
efi_memmap_install(phys_addr_t addr
, unsigned int nr_map
);
999 extern int __init
efi_memmap_split_count(efi_memory_desc_t
*md
,
1000 struct range
*range
);
1001 extern void __init
efi_memmap_insert(struct efi_memory_map
*old_memmap
,
1002 void *buf
, struct efi_mem_range
*mem
);
1004 extern int efi_config_init(efi_config_table_type_t
*arch_tables
);
1005 #ifdef CONFIG_EFI_ESRT
1006 extern void __init
efi_esrt_init(void);
1008 static inline void efi_esrt_init(void) { }
1010 extern int efi_config_parse_tables(void *config_tables
, int count
, int sz
,
1011 efi_config_table_type_t
*arch_tables
);
1012 extern u64
efi_get_iobase (void);
1013 extern u32
efi_mem_type (unsigned long phys_addr
);
1014 extern u64
efi_mem_attributes (unsigned long phys_addr
);
1015 extern u64
efi_mem_attribute (unsigned long phys_addr
, unsigned long size
);
1016 extern int __init
efi_uart_console_only (void);
1017 extern u64
efi_mem_desc_end(efi_memory_desc_t
*md
);
1018 extern int efi_mem_desc_lookup(u64 phys_addr
, efi_memory_desc_t
*out_md
);
1019 extern void efi_mem_reserve(phys_addr_t addr
, u64 size
);
1020 extern void efi_initialize_iomem_resources(struct resource
*code_resource
,
1021 struct resource
*data_resource
, struct resource
*bss_resource
);
1022 extern void efi_reserve_boot_services(void);
1023 extern int efi_get_fdt_params(struct efi_fdt_params
*params
);
1024 extern struct kobject
*efi_kobj
;
1026 extern int efi_reboot_quirk_mode
;
1027 extern bool efi_poweroff_required(void);
1029 #ifdef CONFIG_EFI_FAKE_MEMMAP
1030 extern void __init
efi_fake_memmap(void);
1032 static inline void efi_fake_memmap(void) { }
1036 * efi_memattr_perm_setter - arch specific callback function passed into
1037 * efi_memattr_apply_permissions() that updates the
1038 * mapping permissions described by the second
1039 * argument in the page tables referred to by the
1042 typedef int (*efi_memattr_perm_setter
)(struct mm_struct
*, efi_memory_desc_t
*);
1044 extern int efi_memattr_init(void);
1045 extern int efi_memattr_apply_permissions(struct mm_struct
*mm
,
1046 efi_memattr_perm_setter fn
);
1048 /* Iterate through an efi_memory_map */
1049 #define for_each_efi_memory_desc_in_map(m, md) \
1050 for ((md) = (m)->map; \
1051 (md) && ((void *)(md) + (m)->desc_size) <= (m)->map_end; \
1052 (md) = (void *)(md) + (m)->desc_size)
1055 * for_each_efi_memory_desc - iterate over descriptors in efi.memmap
1056 * @md: the efi_memory_desc_t * iterator
1058 * Once the loop finishes @md must not be accessed.
1060 #define for_each_efi_memory_desc(md) \
1061 for_each_efi_memory_desc_in_map(&efi.memmap, md)
1064 * Format an EFI memory descriptor's type and attributes to a user-provided
1065 * character buffer, as per snprintf(), and return the buffer.
1067 char * __init
efi_md_typeattr_format(char *buf
, size_t size
,
1068 const efi_memory_desc_t
*md
);
1071 typedef void (*efi_element_handler_t
)(const char *source
,
1072 const void *element_data
,
1073 size_t element_size
);
1074 extern int __init
parse_efi_signature_list(
1076 const void *data
, size_t size
,
1077 efi_element_handler_t (*get_handler_for_guid
)(const efi_guid_t
*));
1080 * efi_range_is_wc - check the WC bit on an address range
1081 * @start: starting kvirt address
1082 * @len: length of range
1084 * Consult the EFI memory map and make sure it's ok to set this range WC.
1085 * Returns true or false.
1087 static inline int efi_range_is_wc(unsigned long start
, unsigned long len
)
1091 for (i
= 0; i
< len
; i
+= (1UL << EFI_PAGE_SHIFT
)) {
1092 unsigned long paddr
= __pa(start
+ i
);
1093 if (!(efi_mem_attributes(paddr
) & EFI_MEMORY_WC
))
1096 /* The range checked out */
1100 #ifdef CONFIG_EFI_PCDP
1101 extern int __init
efi_setup_pcdp_console(char *);
1105 * We play games with efi_enabled so that the compiler will, if
1106 * possible, remove EFI-related code altogether.
1108 #define EFI_BOOT 0 /* Were we booted from EFI? */
1109 #define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */
1110 #define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */
1111 #define EFI_MEMMAP 4 /* Can we use EFI memory map? */
1112 #define EFI_64BIT 5 /* Is the firmware 64-bit? */
1113 #define EFI_PARAVIRT 6 /* Access is via a paravirt interface */
1114 #define EFI_ARCH_1 7 /* First arch-specific bit */
1115 #define EFI_DBG 8 /* Print additional debug info at runtime */
1116 #define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */
1117 #define EFI_MEM_ATTR 10 /* Did firmware publish an EFI_MEMORY_ATTRIBUTES table? */
1118 #define EFI_SECURE_BOOT 11 /* Are we in Secure Boot mode? */
1122 * Test whether the above EFI_* bits are enabled.
1124 static inline bool efi_enabled(int feature
)
1126 return test_bit(feature
, &efi
.flags
) != 0;
1128 extern void efi_reboot(enum reboot_mode reboot_mode
, const char *__unused
);
1130 static inline bool efi_enabled(int feature
)
1135 efi_reboot(enum reboot_mode reboot_mode
, const char *__unused
) {}
1138 efi_capsule_pending(int *reset_type
)
1144 extern int efi_status_to_err(efi_status_t status
);
1147 * Variable Attributes
1149 #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001
1150 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
1151 #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004
1152 #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008
1153 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010
1154 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
1155 #define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040
1157 #define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \
1158 EFI_VARIABLE_BOOTSERVICE_ACCESS | \
1159 EFI_VARIABLE_RUNTIME_ACCESS | \
1160 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \
1161 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \
1162 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \
1163 EFI_VARIABLE_APPEND_WRITE)
1165 * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee"))
1166 * not including trailing NUL
1168 #define EFI_VARIABLE_GUID_LEN UUID_STRING_LEN
1171 * The type of search to perform when calling boottime->locate_handle
1173 #define EFI_LOCATE_ALL_HANDLES 0
1174 #define EFI_LOCATE_BY_REGISTER_NOTIFY 1
1175 #define EFI_LOCATE_BY_PROTOCOL 2
1178 * EFI Device Path information
1180 #define EFI_DEV_HW 0x01
1181 #define EFI_DEV_PCI 1
1182 #define EFI_DEV_PCCARD 2
1183 #define EFI_DEV_MEM_MAPPED 3
1184 #define EFI_DEV_VENDOR 4
1185 #define EFI_DEV_CONTROLLER 5
1186 #define EFI_DEV_ACPI 0x02
1187 #define EFI_DEV_BASIC_ACPI 1
1188 #define EFI_DEV_EXPANDED_ACPI 2
1189 #define EFI_DEV_MSG 0x03
1190 #define EFI_DEV_MSG_ATAPI 1
1191 #define EFI_DEV_MSG_SCSI 2
1192 #define EFI_DEV_MSG_FC 3
1193 #define EFI_DEV_MSG_1394 4
1194 #define EFI_DEV_MSG_USB 5
1195 #define EFI_DEV_MSG_USB_CLASS 15
1196 #define EFI_DEV_MSG_I20 6
1197 #define EFI_DEV_MSG_MAC 11
1198 #define EFI_DEV_MSG_IPV4 12
1199 #define EFI_DEV_MSG_IPV6 13
1200 #define EFI_DEV_MSG_INFINIBAND 9
1201 #define EFI_DEV_MSG_UART 14
1202 #define EFI_DEV_MSG_VENDOR 10
1203 #define EFI_DEV_MEDIA 0x04
1204 #define EFI_DEV_MEDIA_HARD_DRIVE 1
1205 #define EFI_DEV_MEDIA_CDROM 2
1206 #define EFI_DEV_MEDIA_VENDOR 3
1207 #define EFI_DEV_MEDIA_FILE 4
1208 #define EFI_DEV_MEDIA_PROTOCOL 5
1209 #define EFI_DEV_BIOS_BOOT 0x05
1210 #define EFI_DEV_END_PATH 0x7F
1211 #define EFI_DEV_END_PATH2 0xFF
1212 #define EFI_DEV_END_INSTANCE 0x01
1213 #define EFI_DEV_END_ENTIRE 0xFF
1215 struct efi_generic_dev_path
{
1219 } __attribute ((packed
));
1221 struct efi_dev_path
{
1222 u8 type
; /* can be replaced with unnamed */
1223 u8 sub_type
; /* struct efi_generic_dev_path; */
1224 u16 length
; /* once we've moved to -std=c11 */
1235 } __attribute ((packed
));
1237 #if IS_ENABLED(CONFIG_EFI_DEV_PATH_PARSER)
1238 struct device
*efi_get_device_by_path(struct efi_dev_path
**node
, size_t *len
);
1241 static inline void memrange_efi_to_native(u64
*addr
, u64
*npages
)
1243 *npages
= PFN_UP(*addr
+ (*npages
<<EFI_PAGE_SHIFT
)) - PFN_DOWN(*addr
);
1248 * EFI Variable support.
1250 * Different firmware drivers can expose their EFI-like variables using
1254 struct efivar_operations
{
1255 efi_get_variable_t
*get_variable
;
1256 efi_get_next_variable_t
*get_next_variable
;
1257 efi_set_variable_t
*set_variable
;
1258 efi_set_variable_t
*set_variable_nonblocking
;
1259 efi_query_variable_store_t
*query_variable_store
;
1264 struct kobject
*kobject
;
1265 const struct efivar_operations
*ops
;
1269 * The maximum size of VariableName + Data = 1024
1270 * Therefore, it's reasonable to save that much
1271 * space in each part of the structure,
1272 * and we use a page for reading/writing.
1275 #define EFI_VAR_NAME_LEN 1024
1277 struct efi_variable
{
1278 efi_char16_t VariableName
[EFI_VAR_NAME_LEN
/sizeof(efi_char16_t
)];
1279 efi_guid_t VendorGuid
;
1280 unsigned long DataSize
;
1282 efi_status_t Status
;
1284 } __attribute__((packed
));
1286 struct efivar_entry
{
1287 struct efi_variable var
;
1288 struct list_head list
;
1289 struct kobject kobj
;
1298 } efi_simple_text_output_protocol_32_t
;
1304 } efi_simple_text_output_protocol_64_t
;
1306 struct efi_simple_text_output_protocol
{
1308 efi_status_t (*output_string
)(void *, void *);
1312 #define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0
1313 #define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1
1314 #define PIXEL_BIT_MASK 2
1315 #define PIXEL_BLT_ONLY 3
1316 #define PIXEL_FORMAT_MAX 4
1318 struct efi_pixel_bitmask
{
1325 struct efi_graphics_output_mode_info
{
1327 u32 horizontal_resolution
;
1328 u32 vertical_resolution
;
1330 struct efi_pixel_bitmask pixel_information
;
1331 u32 pixels_per_scan_line
;
1334 struct efi_graphics_output_protocol_mode_32
{
1339 u64 frame_buffer_base
;
1340 u32 frame_buffer_size
;
1343 struct efi_graphics_output_protocol_mode_64
{
1348 u64 frame_buffer_base
;
1349 u64 frame_buffer_size
;
1352 struct efi_graphics_output_protocol_mode
{
1356 unsigned long size_of_info
;
1357 u64 frame_buffer_base
;
1358 unsigned long frame_buffer_size
;
1361 struct efi_graphics_output_protocol_32
{
1368 struct efi_graphics_output_protocol_64
{
1375 struct efi_graphics_output_protocol
{
1376 unsigned long query_mode
;
1377 unsigned long set_mode
;
1379 struct efi_graphics_output_protocol_mode
*mode
;
1382 typedef efi_status_t (*efi_graphics_output_protocol_query_mode
)(
1383 struct efi_graphics_output_protocol
*, u32
, unsigned long *,
1384 struct efi_graphics_output_mode_info
**);
1386 extern struct list_head efivar_sysfs_list
;
1389 efivar_unregister(struct efivar_entry
*var
)
1391 kobject_put(&var
->kobj
);
1394 int efivars_register(struct efivars
*efivars
,
1395 const struct efivar_operations
*ops
,
1396 struct kobject
*kobject
);
1397 int efivars_unregister(struct efivars
*efivars
);
1398 struct kobject
*efivars_kobject(void);
1400 int efivar_init(int (*func
)(efi_char16_t
*, efi_guid_t
, unsigned long, void *),
1401 void *data
, bool duplicates
, struct list_head
*head
);
1403 int efivar_entry_add(struct efivar_entry
*entry
, struct list_head
*head
);
1404 int efivar_entry_remove(struct efivar_entry
*entry
);
1406 int __efivar_entry_delete(struct efivar_entry
*entry
);
1407 int efivar_entry_delete(struct efivar_entry
*entry
);
1409 int efivar_entry_size(struct efivar_entry
*entry
, unsigned long *size
);
1410 int __efivar_entry_get(struct efivar_entry
*entry
, u32
*attributes
,
1411 unsigned long *size
, void *data
);
1412 int efivar_entry_get(struct efivar_entry
*entry
, u32
*attributes
,
1413 unsigned long *size
, void *data
);
1414 int efivar_entry_set(struct efivar_entry
*entry
, u32 attributes
,
1415 unsigned long size
, void *data
, struct list_head
*head
);
1416 int efivar_entry_set_get_size(struct efivar_entry
*entry
, u32 attributes
,
1417 unsigned long *size
, void *data
, bool *set
);
1418 int efivar_entry_set_safe(efi_char16_t
*name
, efi_guid_t vendor
, u32 attributes
,
1419 bool block
, unsigned long size
, void *data
);
1421 int efivar_entry_iter_begin(void);
1422 void efivar_entry_iter_end(void);
1424 int __efivar_entry_iter(int (*func
)(struct efivar_entry
*, void *),
1425 struct list_head
*head
, void *data
,
1426 struct efivar_entry
**prev
);
1427 int efivar_entry_iter(int (*func
)(struct efivar_entry
*, void *),
1428 struct list_head
*head
, void *data
);
1430 struct efivar_entry
*efivar_entry_find(efi_char16_t
*name
, efi_guid_t guid
,
1431 struct list_head
*head
, bool remove
);
1433 bool efivar_validate(efi_guid_t vendor
, efi_char16_t
*var_name
, u8
*data
,
1434 unsigned long data_size
);
1435 bool efivar_variable_is_removable(efi_guid_t vendor
, const char *name
,
1438 extern struct work_struct efivar_work
;
1439 void efivar_run_worker(void);
1441 #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE)
1442 int efivars_sysfs_init(void);
1444 #define EFIVARS_DATA_SIZE_MAX 1024
1446 #endif /* CONFIG_EFI_VARS */
1447 extern bool efi_capsule_pending(int *reset_type
);
1449 extern int efi_capsule_supported(efi_guid_t guid
, u32 flags
,
1450 size_t size
, int *reset
);
1452 extern int efi_capsule_update(efi_capsule_header_t
*capsule
,
1453 phys_addr_t
*pages
);
1455 #ifdef CONFIG_EFI_RUNTIME_MAP
1456 int efi_runtime_map_init(struct kobject
*);
1457 int efi_get_runtime_map_size(void);
1458 int efi_get_runtime_map_desc_size(void);
1459 int efi_runtime_map_copy(void *buf
, size_t bufsz
);
1461 static inline int efi_runtime_map_init(struct kobject
*kobj
)
1466 static inline int efi_get_runtime_map_size(void)
1471 static inline int efi_get_runtime_map_desc_size(void)
1476 static inline int efi_runtime_map_copy(void *buf
, size_t bufsz
)
1483 /* prototypes shared between arch specific and generic stub code */
1485 void efi_printk(efi_system_table_t
*sys_table_arg
, char *str
);
1487 void efi_free(efi_system_table_t
*sys_table_arg
, unsigned long size
,
1488 unsigned long addr
);
1490 char *efi_convert_cmdline(efi_system_table_t
*sys_table_arg
,
1491 efi_loaded_image_t
*image
, int *cmd_line_len
);
1493 efi_status_t
efi_get_memory_map(efi_system_table_t
*sys_table_arg
,
1494 struct efi_boot_memmap
*map
);
1496 efi_status_t
efi_low_alloc(efi_system_table_t
*sys_table_arg
,
1497 unsigned long size
, unsigned long align
,
1498 unsigned long *addr
);
1500 efi_status_t
efi_high_alloc(efi_system_table_t
*sys_table_arg
,
1501 unsigned long size
, unsigned long align
,
1502 unsigned long *addr
, unsigned long max
);
1504 efi_status_t
efi_relocate_kernel(efi_system_table_t
*sys_table_arg
,
1505 unsigned long *image_addr
,
1506 unsigned long image_size
,
1507 unsigned long alloc_size
,
1508 unsigned long preferred_addr
,
1509 unsigned long alignment
);
1511 efi_status_t
handle_cmdline_files(efi_system_table_t
*sys_table_arg
,
1512 efi_loaded_image_t
*image
,
1513 char *cmd_line
, char *option_string
,
1514 unsigned long max_addr
,
1515 unsigned long *load_addr
,
1516 unsigned long *load_size
);
1518 efi_status_t
efi_parse_options(char const *cmdline
);
1520 efi_status_t
efi_setup_gop(efi_system_table_t
*sys_table_arg
,
1521 struct screen_info
*si
, efi_guid_t
*proto
,
1522 unsigned long size
);
1524 bool efi_runtime_disabled(void);
1525 extern void efi_call_virt_check_flags(unsigned long flags
, const char *call
);
1527 enum efi_secureboot_mode
{
1528 efi_secureboot_mode_unset
,
1529 efi_secureboot_mode_unknown
,
1530 efi_secureboot_mode_disabled
,
1531 efi_secureboot_mode_enabled
,
1533 enum efi_secureboot_mode
efi_get_secureboot(efi_system_table_t
*sys_table
);
1536 * Arch code can implement the following three template macros, avoiding
1537 * reptition for the void/non-void return cases of {__,}efi_call_virt():
1539 * * arch_efi_call_virt_setup()
1541 * Sets up the environment for the call (e.g. switching page tables,
1542 * allowing kernel-mode use of floating point, if required).
1544 * * arch_efi_call_virt()
1546 * Performs the call. The last expression in the macro must be the call
1547 * itself, allowing the logic to be shared by the void and non-void
1550 * * arch_efi_call_virt_teardown()
1552 * Restores the usual kernel environment once the call has returned.
1555 #define efi_call_virt_pointer(p, f, args...) \
1558 unsigned long __flags; \
1560 arch_efi_call_virt_setup(); \
1562 local_save_flags(__flags); \
1563 __s = arch_efi_call_virt(p, f, args); \
1564 efi_call_virt_check_flags(__flags, __stringify(f)); \
1566 arch_efi_call_virt_teardown(); \
1571 #define __efi_call_virt_pointer(p, f, args...) \
1573 unsigned long __flags; \
1575 arch_efi_call_virt_setup(); \
1577 local_save_flags(__flags); \
1578 arch_efi_call_virt(p, f, args); \
1579 efi_call_virt_check_flags(__flags, __stringify(f)); \
1581 arch_efi_call_virt_teardown(); \
1584 typedef efi_status_t (*efi_exit_boot_map_processing
)(
1585 efi_system_table_t
*sys_table_arg
,
1586 struct efi_boot_memmap
*map
,
1589 efi_status_t
efi_exit_boot_services(efi_system_table_t
*sys_table
,
1591 struct efi_boot_memmap
*map
,
1593 efi_exit_boot_map_processing priv_func
);
1595 struct linux_efi_random_seed
{
1600 #endif /* _LINUX_EFI_H */