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)
121 } efi_capsule_header_t
;
123 struct efi_boot_memmap
{
124 efi_memory_desc_t
**map
;
125 unsigned long *map_size
;
126 unsigned long *desc_size
;
128 unsigned long *key_ptr
;
129 unsigned long *buff_size
;
135 #define EFI_CAPSULE_PERSIST_ACROSS_RESET 0x00010000
136 #define EFI_CAPSULE_POPULATE_SYSTEM_TABLE 0x00020000
137 #define EFI_CAPSULE_INITIATE_RESET 0x00040000
140 * Allocation types for calls to boottime->allocate_pages.
142 #define EFI_ALLOCATE_ANY_PAGES 0
143 #define EFI_ALLOCATE_MAX_ADDRESS 1
144 #define EFI_ALLOCATE_ADDRESS 2
145 #define EFI_MAX_ALLOCATE_TYPE 3
147 typedef int (*efi_freemem_callback_t
) (u64 start
, u64 end
, void *arg
);
150 * Types and defines for Time Services
152 #define EFI_TIME_ADJUST_DAYLIGHT 0x1
153 #define EFI_TIME_IN_DAYLIGHT 0x2
154 #define EFI_UNSPECIFIED_TIMEZONE 0x07ff
191 u32 install_protocol_interface
;
192 u32 reinstall_protocol_interface
;
193 u32 uninstall_protocol_interface
;
196 u32 register_protocol_notify
;
198 u32 locate_device_path
;
199 u32 install_configuration_table
;
204 u32 exit_boot_services
;
205 u32 get_next_monotonic_count
;
207 u32 set_watchdog_timer
;
208 u32 connect_controller
;
209 u32 disconnect_controller
;
212 u32 open_protocol_information
;
213 u32 protocols_per_handle
;
214 u32 locate_handle_buffer
;
216 u32 install_multiple_protocol_interfaces
;
217 u32 uninstall_multiple_protocol_interfaces
;
222 } __packed efi_boot_services_32_t
;
239 u64 install_protocol_interface
;
240 u64 reinstall_protocol_interface
;
241 u64 uninstall_protocol_interface
;
244 u64 register_protocol_notify
;
246 u64 locate_device_path
;
247 u64 install_configuration_table
;
252 u64 exit_boot_services
;
253 u64 get_next_monotonic_count
;
255 u64 set_watchdog_timer
;
256 u64 connect_controller
;
257 u64 disconnect_controller
;
260 u64 open_protocol_information
;
261 u64 protocols_per_handle
;
262 u64 locate_handle_buffer
;
264 u64 install_multiple_protocol_interfaces
;
265 u64 uninstall_multiple_protocol_interfaces
;
270 } __packed efi_boot_services_64_t
;
273 * EFI Boot Services table
279 efi_status_t (*allocate_pages
)(int, int, unsigned long,
280 efi_physical_addr_t
*);
281 efi_status_t (*free_pages
)(efi_physical_addr_t
, unsigned long);
282 efi_status_t (*get_memory_map
)(unsigned long *, void *, unsigned long *,
283 unsigned long *, u32
*);
284 efi_status_t (*allocate_pool
)(int, unsigned long, void **);
285 efi_status_t (*free_pool
)(void *);
288 void *wait_for_event
;
292 void *install_protocol_interface
;
293 void *reinstall_protocol_interface
;
294 void *uninstall_protocol_interface
;
295 efi_status_t (*handle_protocol
)(efi_handle_t
, efi_guid_t
*, void **);
297 void *register_protocol_notify
;
298 efi_status_t (*locate_handle
)(int, efi_guid_t
*, void *,
299 unsigned long *, efi_handle_t
*);
300 void *locate_device_path
;
301 efi_status_t (*install_configuration_table
)(efi_guid_t
*, void *);
306 efi_status_t (*exit_boot_services
)(efi_handle_t
, unsigned long);
307 void *get_next_monotonic_count
;
309 void *set_watchdog_timer
;
310 void *connect_controller
;
311 void *disconnect_controller
;
313 void *close_protocol
;
314 void *open_protocol_information
;
315 void *protocols_per_handle
;
316 void *locate_handle_buffer
;
317 efi_status_t (*locate_protocol
)(efi_guid_t
*, void *, void **);
318 void *install_multiple_protocol_interfaces
;
319 void *uninstall_multiple_protocol_interfaces
;
320 void *calculate_crc32
;
323 void *create_event_ex
;
324 } efi_boot_services_t
;
331 EfiPciIoWidthFifoUint8
,
332 EfiPciIoWidthFifoUint16
,
333 EfiPciIoWidthFifoUint32
,
334 EfiPciIoWidthFifoUint64
,
335 EfiPciIoWidthFillUint8
,
336 EfiPciIoWidthFillUint16
,
337 EfiPciIoWidthFillUint32
,
338 EfiPciIoWidthFillUint64
,
340 } EFI_PCI_IO_PROTOCOL_WIDTH
;
343 EfiPciIoAttributeOperationGet
,
344 EfiPciIoAttributeOperationSet
,
345 EfiPciIoAttributeOperationEnable
,
346 EfiPciIoAttributeOperationDisable
,
347 EfiPciIoAttributeOperationSupported
,
348 EfiPciIoAttributeOperationMaximum
349 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION
;
354 } efi_pci_io_protocol_access_32_t
;
359 } efi_pci_io_protocol_access_64_t
;
364 } efi_pci_io_protocol_access_t
;
369 efi_pci_io_protocol_access_32_t mem
;
370 efi_pci_io_protocol_access_32_t io
;
371 efi_pci_io_protocol_access_32_t pci
;
380 u32 get_bar_attributes
;
381 u32 set_bar_attributes
;
384 } efi_pci_io_protocol_32
;
389 efi_pci_io_protocol_access_64_t mem
;
390 efi_pci_io_protocol_access_64_t io
;
391 efi_pci_io_protocol_access_64_t pci
;
400 u64 get_bar_attributes
;
401 u64 set_bar_attributes
;
404 } efi_pci_io_protocol_64
;
409 efi_pci_io_protocol_access_t mem
;
410 efi_pci_io_protocol_access_t io
;
411 efi_pci_io_protocol_access_t pci
;
415 void *allocate_buffer
;
420 void *get_bar_attributes
;
421 void *set_bar_attributes
;
424 } efi_pci_io_protocol
;
426 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001
427 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002
428 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004
429 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008
430 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010
431 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020
432 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040
433 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080
434 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100
435 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200
436 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400
437 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800
438 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000
439 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000
440 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000
441 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000
442 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000
443 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000
444 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000
447 * Types and defines for EFI ResetSystem
449 #define EFI_RESET_COLD 0
450 #define EFI_RESET_WARM 1
451 #define EFI_RESET_SHUTDOWN 2
454 * EFI Runtime Services table
456 #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL)
457 #define EFI_RUNTIME_SERVICES_REVISION 0x00010000
465 u32 set_virtual_address_map
;
468 u32 get_next_variable
;
470 u32 get_next_high_mono_count
;
473 u32 query_capsule_caps
;
474 u32 query_variable_info
;
475 } efi_runtime_services_32_t
;
483 u64 set_virtual_address_map
;
486 u64 get_next_variable
;
488 u64 get_next_high_mono_count
;
491 u64 query_capsule_caps
;
492 u64 query_variable_info
;
493 } efi_runtime_services_64_t
;
499 void *get_wakeup_time
;
500 void *set_wakeup_time
;
501 void *set_virtual_address_map
;
502 void *convert_pointer
;
504 void *get_next_variable
;
506 void *get_next_high_mono_count
;
508 void *update_capsule
;
509 void *query_capsule_caps
;
510 void *query_variable_info
;
511 } efi_runtime_services_t
;
513 typedef efi_status_t
efi_get_time_t (efi_time_t
*tm
, efi_time_cap_t
*tc
);
514 typedef efi_status_t
efi_set_time_t (efi_time_t
*tm
);
515 typedef efi_status_t
efi_get_wakeup_time_t (efi_bool_t
*enabled
, efi_bool_t
*pending
,
517 typedef efi_status_t
efi_set_wakeup_time_t (efi_bool_t enabled
, efi_time_t
*tm
);
518 typedef efi_status_t
efi_get_variable_t (efi_char16_t
*name
, efi_guid_t
*vendor
, u32
*attr
,
519 unsigned long *data_size
, void *data
);
520 typedef efi_status_t
efi_get_next_variable_t (unsigned long *name_size
, efi_char16_t
*name
,
522 typedef efi_status_t
efi_set_variable_t (efi_char16_t
*name
, efi_guid_t
*vendor
,
523 u32 attr
, unsigned long data_size
,
525 typedef efi_status_t
efi_get_next_high_mono_count_t (u32
*count
);
526 typedef void efi_reset_system_t (int reset_type
, efi_status_t status
,
527 unsigned long data_size
, efi_char16_t
*data
);
528 typedef efi_status_t
efi_set_virtual_address_map_t (unsigned long memory_map_size
,
529 unsigned long descriptor_size
,
530 u32 descriptor_version
,
531 efi_memory_desc_t
*virtual_map
);
532 typedef efi_status_t
efi_query_variable_info_t(u32 attr
,
534 u64
*remaining_space
,
535 u64
*max_variable_size
);
536 typedef efi_status_t
efi_update_capsule_t(efi_capsule_header_t
**capsules
,
538 unsigned long sg_list
);
539 typedef efi_status_t
efi_query_capsule_caps_t(efi_capsule_header_t
**capsules
,
543 typedef efi_status_t
efi_query_variable_store_t(u32 attributes
,
547 void efi_native_runtime_setup(void);
550 * EFI Configuration Table and GUID definitions
552 * These are all defined in a single line to make them easier to
553 * grep for and to see them at a glance - while still having a
554 * similar structure to the definitions in the spec.
556 * Here's how they are structured:
558 * GUID: 12345678-1234-1234-1234-123456789012
560 * #define EFI_SOME_PROTOCOL_GUID \
561 * {0x12345678,0x1234,0x1234,\
562 * {0x12,0x34,0x12,0x34,0x56,0x78,0x90,0x12}}
564 * #define SOME_PROTOCOL_GUID EFI_GUID(0x12345678, 0x1234, 0x1234, 0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12)
565 * ^ tabs ^extra space
567 * Note that the 'extra space' separates the values at the same place
568 * where the UEFI SPEC breaks the line.
570 #define NULL_GUID EFI_GUID(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
571 #define MPS_TABLE_GUID EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
572 #define ACPI_TABLE_GUID EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
573 #define ACPI_20_TABLE_GUID EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81)
574 #define SMBIOS_TABLE_GUID EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
575 #define SMBIOS3_TABLE_GUID EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c, 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94)
576 #define SAL_SYSTEM_TABLE_GUID EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
577 #define HCDP_TABLE_GUID EFI_GUID(0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98)
578 #define UGA_IO_PROTOCOL_GUID EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2)
579 #define EFI_GLOBAL_VARIABLE_GUID EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c)
580 #define UV_SYSTEM_TABLE_GUID EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93)
581 #define LINUX_EFI_CRASH_GUID EFI_GUID(0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0)
582 #define LOADED_IMAGE_PROTOCOL_GUID EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
583 #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a)
584 #define EFI_UGA_PROTOCOL_GUID EFI_GUID(0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39)
585 #define EFI_PCI_IO_PROTOCOL_GUID EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a)
586 #define EFI_FILE_INFO_ID EFI_GUID(0x09576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
587 #define EFI_SYSTEM_RESOURCE_TABLE_GUID EFI_GUID(0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80)
588 #define EFI_FILE_SYSTEM_GUID EFI_GUID(0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
589 #define DEVICE_TREE_GUID EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0)
590 #define EFI_PROPERTIES_TABLE_GUID EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5)
591 #define EFI_RNG_PROTOCOL_GUID EFI_GUID(0x3152bca5, 0xeade, 0x433d, 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44)
592 #define EFI_MEMORY_ATTRIBUTES_TABLE_GUID EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20)
593 #define EFI_CONSOLE_OUT_DEVICE_GUID EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4, 0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
596 * This GUID is used to pass to the kernel proper the struct screen_info
597 * structure that was populated by the stub based on the GOP protocol instance
598 * associated with ConOut
600 #define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, 0xb9, 0x0e, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95)
601 #define LINUX_EFI_LOADER_ENTRY_GUID EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f)
606 } efi_config_table_64_t
;
611 } efi_config_table_32_t
;
616 } efi_config_table_t
;
622 } efi_config_table_type_t
;
624 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
626 #define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30))
627 #define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20))
628 #define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10))
629 #define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00))
630 #define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10))
631 #define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02))
635 u64 fw_vendor
; /* physical addr of CHAR16 vendor string */
649 } efi_system_table_64_t
;
653 u32 fw_vendor
; /* physical addr of CHAR16 vendor string */
665 } efi_system_table_32_t
;
669 unsigned long fw_vendor
; /* physical addr of CHAR16 vendor string */
671 unsigned long con_in_handle
;
672 unsigned long con_in
;
673 unsigned long con_out_handle
;
674 unsigned long con_out
;
675 unsigned long stderr_handle
;
676 unsigned long stderr
;
677 efi_runtime_services_t
*runtime
;
678 efi_boot_services_t
*boottime
;
679 unsigned long nr_tables
;
680 unsigned long tables
;
681 } efi_system_table_t
;
684 * Architecture independent structure for describing a memory map for the
685 * benefit of efi_memmap_init_early(), saving us the need to pass four
688 struct efi_memory_map_data
{
689 phys_addr_t phys_map
;
691 unsigned long desc_version
;
692 unsigned long desc_size
;
695 struct efi_memory_map
{
696 phys_addr_t phys_map
;
700 unsigned long desc_version
;
701 unsigned long desc_size
;
705 struct efi_mem_range
{
710 struct efi_fdt_params
{
725 u32 load_options_size
;
728 __aligned_u64 image_size
;
729 unsigned int image_code_type
;
730 unsigned int image_data_type
;
731 unsigned long unload
;
732 } efi_loaded_image_32_t
;
741 u32 load_options_size
;
744 __aligned_u64 image_size
;
745 unsigned int image_code_type
;
746 unsigned int image_data_type
;
747 unsigned long unload
;
748 } efi_loaded_image_64_t
;
753 efi_system_table_t
*system_table
;
757 u32 load_options_size
;
760 __aligned_u64 image_size
;
761 unsigned int image_code_type
;
762 unsigned int image_data_type
;
763 unsigned long unload
;
764 } efi_loaded_image_t
;
771 efi_time_t create_time
;
772 efi_time_t last_access_time
;
773 efi_time_t modification_time
;
774 __aligned_u64 attribute
;
775 efi_char16_t filename
[1];
790 } efi_file_handle_32_t
;
804 } efi_file_handle_64_t
;
806 typedef struct _efi_file_handle
{
808 efi_status_t (*open
)(struct _efi_file_handle
*,
809 struct _efi_file_handle
**,
810 efi_char16_t
*, u64
, u64
);
811 efi_status_t (*close
)(struct _efi_file_handle
*);
813 efi_status_t (*read
)(struct _efi_file_handle
*, unsigned long *,
818 efi_status_t (*get_info
)(struct _efi_file_handle
*, efi_guid_t
*,
819 unsigned long *, void *);
824 typedef struct _efi_file_io_interface
{
826 int (*open_volume
)(struct _efi_file_io_interface
*,
827 efi_file_handle_t
**);
828 } efi_file_io_interface_t
;
830 #define EFI_FILE_MODE_READ 0x0000000000000001
831 #define EFI_FILE_MODE_WRITE 0x0000000000000002
832 #define EFI_FILE_MODE_CREATE 0x8000000000000000
837 u64 memory_protection_attribute
;
838 } efi_properties_table_t
;
840 #define EFI_PROPERTIES_TABLE_VERSION 0x00010000
841 #define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA 0x1
843 #define EFI_INVALID_TABLE_ADDR (~0UL)
850 efi_memory_desc_t entry
[0];
851 } efi_memory_attributes_table_t
;
854 * All runtime access to EFI goes through this structure:
857 efi_system_table_t
*systab
; /* EFI system table */
858 unsigned int runtime_version
; /* Runtime services version */
859 unsigned long mps
; /* MPS table */
860 unsigned long acpi
; /* ACPI table (IA64 ext 0.71) */
861 unsigned long acpi20
; /* ACPI table (ACPI 2.0) */
862 unsigned long smbios
; /* SMBIOS table (32 bit entry point) */
863 unsigned long smbios3
; /* SMBIOS table (64 bit entry point) */
864 unsigned long sal_systab
; /* SAL system table */
865 unsigned long boot_info
; /* boot info table */
866 unsigned long hcdp
; /* HCDP table */
867 unsigned long uga
; /* UGA table */
868 unsigned long uv_systab
; /* UV system table */
869 unsigned long fw_vendor
; /* fw_vendor */
870 unsigned long runtime
; /* runtime table */
871 unsigned long config_table
; /* config tables */
872 unsigned long esrt
; /* ESRT table */
873 unsigned long properties_table
; /* properties table */
874 unsigned long mem_attr_table
; /* memory attributes table */
875 efi_get_time_t
*get_time
;
876 efi_set_time_t
*set_time
;
877 efi_get_wakeup_time_t
*get_wakeup_time
;
878 efi_set_wakeup_time_t
*set_wakeup_time
;
879 efi_get_variable_t
*get_variable
;
880 efi_get_next_variable_t
*get_next_variable
;
881 efi_set_variable_t
*set_variable
;
882 efi_set_variable_t
*set_variable_nonblocking
;
883 efi_query_variable_info_t
*query_variable_info
;
884 efi_query_variable_info_t
*query_variable_info_nonblocking
;
885 efi_update_capsule_t
*update_capsule
;
886 efi_query_capsule_caps_t
*query_capsule_caps
;
887 efi_get_next_high_mono_count_t
*get_next_high_mono_count
;
888 efi_reset_system_t
*reset_system
;
889 efi_set_virtual_address_map_t
*set_virtual_address_map
;
890 struct efi_memory_map memmap
;
895 efi_guidcmp (efi_guid_t left
, efi_guid_t right
)
897 return memcmp(&left
, &right
, sizeof (efi_guid_t
));
901 efi_guid_to_str(efi_guid_t
*guid
, char *out
)
903 sprintf(out
, "%pUl", guid
->b
);
907 extern void efi_init (void);
908 extern void *efi_get_pal_addr (void);
909 extern void efi_map_pal_code (void);
910 extern void efi_memmap_walk (efi_freemem_callback_t callback
, void *arg
);
911 extern void efi_gettimeofday (struct timespec64
*ts
);
912 extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */
914 extern void efi_late_init(void);
915 extern void efi_free_boot_services(void);
916 extern efi_status_t
efi_query_variable_store(u32 attributes
,
919 extern void efi_find_mirror(void);
921 static inline void efi_late_init(void) {}
922 static inline void efi_free_boot_services(void) {}
924 static inline efi_status_t
efi_query_variable_store(u32 attributes
,
931 extern void __iomem
*efi_lookup_mapped_addr(u64 phys_addr
);
933 extern int __init
efi_memmap_init_early(struct efi_memory_map_data
*data
);
934 extern int __init
efi_memmap_init_late(phys_addr_t addr
, unsigned long size
);
935 extern void __init
efi_memmap_unmap(void);
936 extern int __init
efi_memmap_install(phys_addr_t addr
, unsigned int nr_map
);
937 extern int __init
efi_memmap_split_count(efi_memory_desc_t
*md
,
938 struct range
*range
);
939 extern void __init
efi_memmap_insert(struct efi_memory_map
*old_memmap
,
940 void *buf
, struct efi_mem_range
*mem
);
942 extern int efi_config_init(efi_config_table_type_t
*arch_tables
);
943 #ifdef CONFIG_EFI_ESRT
944 extern void __init
efi_esrt_init(void);
946 static inline void efi_esrt_init(void) { }
948 extern int efi_config_parse_tables(void *config_tables
, int count
, int sz
,
949 efi_config_table_type_t
*arch_tables
);
950 extern u64
efi_get_iobase (void);
951 extern u32
efi_mem_type (unsigned long phys_addr
);
952 extern u64
efi_mem_attributes (unsigned long phys_addr
);
953 extern u64
efi_mem_attribute (unsigned long phys_addr
, unsigned long size
);
954 extern int __init
efi_uart_console_only (void);
955 extern u64
efi_mem_desc_end(efi_memory_desc_t
*md
);
956 extern int efi_mem_desc_lookup(u64 phys_addr
, efi_memory_desc_t
*out_md
);
957 extern void efi_mem_reserve(phys_addr_t addr
, u64 size
);
958 extern void efi_initialize_iomem_resources(struct resource
*code_resource
,
959 struct resource
*data_resource
, struct resource
*bss_resource
);
960 extern void efi_reserve_boot_services(void);
961 extern int efi_get_fdt_params(struct efi_fdt_params
*params
);
962 extern struct kobject
*efi_kobj
;
964 extern int efi_reboot_quirk_mode
;
965 extern bool efi_poweroff_required(void);
967 #ifdef CONFIG_EFI_FAKE_MEMMAP
968 extern void __init
efi_fake_memmap(void);
970 static inline void efi_fake_memmap(void) { }
974 * efi_memattr_perm_setter - arch specific callback function passed into
975 * efi_memattr_apply_permissions() that updates the
976 * mapping permissions described by the second
977 * argument in the page tables referred to by the
980 typedef int (*efi_memattr_perm_setter
)(struct mm_struct
*, efi_memory_desc_t
*);
982 extern int efi_memattr_init(void);
983 extern int efi_memattr_apply_permissions(struct mm_struct
*mm
,
984 efi_memattr_perm_setter fn
);
986 /* Iterate through an efi_memory_map */
987 #define for_each_efi_memory_desc_in_map(m, md) \
988 for ((md) = (m)->map; \
989 (md) && ((void *)(md) + (m)->desc_size) <= (m)->map_end; \
990 (md) = (void *)(md) + (m)->desc_size)
993 * for_each_efi_memory_desc - iterate over descriptors in efi.memmap
994 * @md: the efi_memory_desc_t * iterator
996 * Once the loop finishes @md must not be accessed.
998 #define for_each_efi_memory_desc(md) \
999 for_each_efi_memory_desc_in_map(&efi.memmap, md)
1002 * Format an EFI memory descriptor's type and attributes to a user-provided
1003 * character buffer, as per snprintf(), and return the buffer.
1005 char * __init
efi_md_typeattr_format(char *buf
, size_t size
,
1006 const efi_memory_desc_t
*md
);
1009 * efi_range_is_wc - check the WC bit on an address range
1010 * @start: starting kvirt address
1011 * @len: length of range
1013 * Consult the EFI memory map and make sure it's ok to set this range WC.
1014 * Returns true or false.
1016 static inline int efi_range_is_wc(unsigned long start
, unsigned long len
)
1020 for (i
= 0; i
< len
; i
+= (1UL << EFI_PAGE_SHIFT
)) {
1021 unsigned long paddr
= __pa(start
+ i
);
1022 if (!(efi_mem_attributes(paddr
) & EFI_MEMORY_WC
))
1025 /* The range checked out */
1029 #ifdef CONFIG_EFI_PCDP
1030 extern int __init
efi_setup_pcdp_console(char *);
1034 * We play games with efi_enabled so that the compiler will, if
1035 * possible, remove EFI-related code altogether.
1037 #define EFI_BOOT 0 /* Were we booted from EFI? */
1038 #define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */
1039 #define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */
1040 #define EFI_MEMMAP 4 /* Can we use EFI memory map? */
1041 #define EFI_64BIT 5 /* Is the firmware 64-bit? */
1042 #define EFI_PARAVIRT 6 /* Access is via a paravirt interface */
1043 #define EFI_ARCH_1 7 /* First arch-specific bit */
1044 #define EFI_DBG 8 /* Print additional debug info at runtime */
1045 #define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */
1049 * Test whether the above EFI_* bits are enabled.
1051 static inline bool efi_enabled(int feature
)
1053 return test_bit(feature
, &efi
.flags
) != 0;
1055 extern void efi_reboot(enum reboot_mode reboot_mode
, const char *__unused
);
1057 static inline bool efi_enabled(int feature
)
1062 efi_reboot(enum reboot_mode reboot_mode
, const char *__unused
) {}
1065 efi_capsule_pending(int *reset_type
)
1071 extern int efi_status_to_err(efi_status_t status
);
1074 * Variable Attributes
1076 #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001
1077 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
1078 #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004
1079 #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008
1080 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010
1081 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
1082 #define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040
1084 #define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \
1085 EFI_VARIABLE_BOOTSERVICE_ACCESS | \
1086 EFI_VARIABLE_RUNTIME_ACCESS | \
1087 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \
1088 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \
1089 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \
1090 EFI_VARIABLE_APPEND_WRITE)
1092 * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee"))
1093 * not including trailing NUL
1095 #define EFI_VARIABLE_GUID_LEN UUID_STRING_LEN
1098 * The type of search to perform when calling boottime->locate_handle
1100 #define EFI_LOCATE_ALL_HANDLES 0
1101 #define EFI_LOCATE_BY_REGISTER_NOTIFY 1
1102 #define EFI_LOCATE_BY_PROTOCOL 2
1105 * EFI Device Path information
1107 #define EFI_DEV_HW 0x01
1108 #define EFI_DEV_PCI 1
1109 #define EFI_DEV_PCCARD 2
1110 #define EFI_DEV_MEM_MAPPED 3
1111 #define EFI_DEV_VENDOR 4
1112 #define EFI_DEV_CONTROLLER 5
1113 #define EFI_DEV_ACPI 0x02
1114 #define EFI_DEV_BASIC_ACPI 1
1115 #define EFI_DEV_EXPANDED_ACPI 2
1116 #define EFI_DEV_MSG 0x03
1117 #define EFI_DEV_MSG_ATAPI 1
1118 #define EFI_DEV_MSG_SCSI 2
1119 #define EFI_DEV_MSG_FC 3
1120 #define EFI_DEV_MSG_1394 4
1121 #define EFI_DEV_MSG_USB 5
1122 #define EFI_DEV_MSG_USB_CLASS 15
1123 #define EFI_DEV_MSG_I20 6
1124 #define EFI_DEV_MSG_MAC 11
1125 #define EFI_DEV_MSG_IPV4 12
1126 #define EFI_DEV_MSG_IPV6 13
1127 #define EFI_DEV_MSG_INFINIBAND 9
1128 #define EFI_DEV_MSG_UART 14
1129 #define EFI_DEV_MSG_VENDOR 10
1130 #define EFI_DEV_MEDIA 0x04
1131 #define EFI_DEV_MEDIA_HARD_DRIVE 1
1132 #define EFI_DEV_MEDIA_CDROM 2
1133 #define EFI_DEV_MEDIA_VENDOR 3
1134 #define EFI_DEV_MEDIA_FILE 4
1135 #define EFI_DEV_MEDIA_PROTOCOL 5
1136 #define EFI_DEV_BIOS_BOOT 0x05
1137 #define EFI_DEV_END_PATH 0x7F
1138 #define EFI_DEV_END_PATH2 0xFF
1139 #define EFI_DEV_END_INSTANCE 0x01
1140 #define EFI_DEV_END_ENTIRE 0xFF
1142 struct efi_generic_dev_path
{
1146 } __attribute ((packed
));
1148 static inline void memrange_efi_to_native(u64
*addr
, u64
*npages
)
1150 *npages
= PFN_UP(*addr
+ (*npages
<<EFI_PAGE_SHIFT
)) - PFN_DOWN(*addr
);
1155 * EFI Variable support.
1157 * Different firmware drivers can expose their EFI-like variables using
1161 struct efivar_operations
{
1162 efi_get_variable_t
*get_variable
;
1163 efi_get_next_variable_t
*get_next_variable
;
1164 efi_set_variable_t
*set_variable
;
1165 efi_set_variable_t
*set_variable_nonblocking
;
1166 efi_query_variable_store_t
*query_variable_store
;
1171 struct kobject
*kobject
;
1172 const struct efivar_operations
*ops
;
1176 * The maximum size of VariableName + Data = 1024
1177 * Therefore, it's reasonable to save that much
1178 * space in each part of the structure,
1179 * and we use a page for reading/writing.
1182 #define EFI_VAR_NAME_LEN 1024
1184 struct efi_variable
{
1185 efi_char16_t VariableName
[EFI_VAR_NAME_LEN
/sizeof(efi_char16_t
)];
1186 efi_guid_t VendorGuid
;
1187 unsigned long DataSize
;
1189 efi_status_t Status
;
1191 } __attribute__((packed
));
1193 struct efivar_entry
{
1194 struct efi_variable var
;
1195 struct list_head list
;
1196 struct kobject kobj
;
1201 struct efi_simple_text_output_protocol_32
{
1207 struct efi_simple_text_output_protocol_64
{
1213 struct efi_simple_text_output_protocol
{
1215 efi_status_t (*output_string
)(void *, void *);
1219 #define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0
1220 #define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1
1221 #define PIXEL_BIT_MASK 2
1222 #define PIXEL_BLT_ONLY 3
1223 #define PIXEL_FORMAT_MAX 4
1225 struct efi_pixel_bitmask
{
1232 struct efi_graphics_output_mode_info
{
1234 u32 horizontal_resolution
;
1235 u32 vertical_resolution
;
1237 struct efi_pixel_bitmask pixel_information
;
1238 u32 pixels_per_scan_line
;
1241 struct efi_graphics_output_protocol_mode_32
{
1246 u64 frame_buffer_base
;
1247 u32 frame_buffer_size
;
1250 struct efi_graphics_output_protocol_mode_64
{
1255 u64 frame_buffer_base
;
1256 u64 frame_buffer_size
;
1259 struct efi_graphics_output_protocol_mode
{
1263 unsigned long size_of_info
;
1264 u64 frame_buffer_base
;
1265 unsigned long frame_buffer_size
;
1268 struct efi_graphics_output_protocol_32
{
1275 struct efi_graphics_output_protocol_64
{
1282 struct efi_graphics_output_protocol
{
1283 unsigned long query_mode
;
1284 unsigned long set_mode
;
1286 struct efi_graphics_output_protocol_mode
*mode
;
1289 typedef efi_status_t (*efi_graphics_output_protocol_query_mode
)(
1290 struct efi_graphics_output_protocol
*, u32
, unsigned long *,
1291 struct efi_graphics_output_mode_info
**);
1293 extern struct list_head efivar_sysfs_list
;
1296 efivar_unregister(struct efivar_entry
*var
)
1298 kobject_put(&var
->kobj
);
1301 int efivars_register(struct efivars
*efivars
,
1302 const struct efivar_operations
*ops
,
1303 struct kobject
*kobject
);
1304 int efivars_unregister(struct efivars
*efivars
);
1305 struct kobject
*efivars_kobject(void);
1307 int efivar_init(int (*func
)(efi_char16_t
*, efi_guid_t
, unsigned long, void *),
1308 void *data
, bool duplicates
, struct list_head
*head
);
1310 int efivar_entry_add(struct efivar_entry
*entry
, struct list_head
*head
);
1311 int efivar_entry_remove(struct efivar_entry
*entry
);
1313 int __efivar_entry_delete(struct efivar_entry
*entry
);
1314 int efivar_entry_delete(struct efivar_entry
*entry
);
1316 int efivar_entry_size(struct efivar_entry
*entry
, unsigned long *size
);
1317 int __efivar_entry_get(struct efivar_entry
*entry
, u32
*attributes
,
1318 unsigned long *size
, void *data
);
1319 int efivar_entry_get(struct efivar_entry
*entry
, u32
*attributes
,
1320 unsigned long *size
, void *data
);
1321 int efivar_entry_set(struct efivar_entry
*entry
, u32 attributes
,
1322 unsigned long size
, void *data
, struct list_head
*head
);
1323 int efivar_entry_set_get_size(struct efivar_entry
*entry
, u32 attributes
,
1324 unsigned long *size
, void *data
, bool *set
);
1325 int efivar_entry_set_safe(efi_char16_t
*name
, efi_guid_t vendor
, u32 attributes
,
1326 bool block
, unsigned long size
, void *data
);
1328 int efivar_entry_iter_begin(void);
1329 void efivar_entry_iter_end(void);
1331 int __efivar_entry_iter(int (*func
)(struct efivar_entry
*, void *),
1332 struct list_head
*head
, void *data
,
1333 struct efivar_entry
**prev
);
1334 int efivar_entry_iter(int (*func
)(struct efivar_entry
*, void *),
1335 struct list_head
*head
, void *data
);
1337 struct efivar_entry
*efivar_entry_find(efi_char16_t
*name
, efi_guid_t guid
,
1338 struct list_head
*head
, bool remove
);
1340 bool efivar_validate(efi_guid_t vendor
, efi_char16_t
*var_name
, u8
*data
,
1341 unsigned long data_size
);
1342 bool efivar_variable_is_removable(efi_guid_t vendor
, const char *name
,
1345 extern struct work_struct efivar_work
;
1346 void efivar_run_worker(void);
1348 #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE)
1349 int efivars_sysfs_init(void);
1351 #define EFIVARS_DATA_SIZE_MAX 1024
1353 #endif /* CONFIG_EFI_VARS */
1354 extern bool efi_capsule_pending(int *reset_type
);
1356 extern int efi_capsule_supported(efi_guid_t guid
, u32 flags
,
1357 size_t size
, int *reset
);
1359 extern int efi_capsule_update(efi_capsule_header_t
*capsule
,
1360 struct page
**pages
);
1362 #ifdef CONFIG_EFI_RUNTIME_MAP
1363 int efi_runtime_map_init(struct kobject
*);
1364 int efi_get_runtime_map_size(void);
1365 int efi_get_runtime_map_desc_size(void);
1366 int efi_runtime_map_copy(void *buf
, size_t bufsz
);
1368 static inline int efi_runtime_map_init(struct kobject
*kobj
)
1373 static inline int efi_get_runtime_map_size(void)
1378 static inline int efi_get_runtime_map_desc_size(void)
1383 static inline int efi_runtime_map_copy(void *buf
, size_t bufsz
)
1390 /* prototypes shared between arch specific and generic stub code */
1392 #define pr_efi(sys_table, msg) efi_printk(sys_table, "EFI stub: "msg)
1393 #define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg)
1395 void efi_printk(efi_system_table_t
*sys_table_arg
, char *str
);
1397 void efi_free(efi_system_table_t
*sys_table_arg
, unsigned long size
,
1398 unsigned long addr
);
1400 char *efi_convert_cmdline(efi_system_table_t
*sys_table_arg
,
1401 efi_loaded_image_t
*image
, int *cmd_line_len
);
1403 efi_status_t
efi_get_memory_map(efi_system_table_t
*sys_table_arg
,
1404 struct efi_boot_memmap
*map
);
1406 efi_status_t
efi_low_alloc(efi_system_table_t
*sys_table_arg
,
1407 unsigned long size
, unsigned long align
,
1408 unsigned long *addr
);
1410 efi_status_t
efi_high_alloc(efi_system_table_t
*sys_table_arg
,
1411 unsigned long size
, unsigned long align
,
1412 unsigned long *addr
, unsigned long max
);
1414 efi_status_t
efi_relocate_kernel(efi_system_table_t
*sys_table_arg
,
1415 unsigned long *image_addr
,
1416 unsigned long image_size
,
1417 unsigned long alloc_size
,
1418 unsigned long preferred_addr
,
1419 unsigned long alignment
);
1421 efi_status_t
handle_cmdline_files(efi_system_table_t
*sys_table_arg
,
1422 efi_loaded_image_t
*image
,
1423 char *cmd_line
, char *option_string
,
1424 unsigned long max_addr
,
1425 unsigned long *load_addr
,
1426 unsigned long *load_size
);
1428 efi_status_t
efi_parse_options(char *cmdline
);
1430 efi_status_t
efi_setup_gop(efi_system_table_t
*sys_table_arg
,
1431 struct screen_info
*si
, efi_guid_t
*proto
,
1432 unsigned long size
);
1434 bool efi_runtime_disabled(void);
1435 extern void efi_call_virt_check_flags(unsigned long flags
, const char *call
);
1438 * Arch code can implement the following three template macros, avoiding
1439 * reptition for the void/non-void return cases of {__,}efi_call_virt():
1441 * * arch_efi_call_virt_setup()
1443 * Sets up the environment for the call (e.g. switching page tables,
1444 * allowing kernel-mode use of floating point, if required).
1446 * * arch_efi_call_virt()
1448 * Performs the call. The last expression in the macro must be the call
1449 * itself, allowing the logic to be shared by the void and non-void
1452 * * arch_efi_call_virt_teardown()
1454 * Restores the usual kernel environment once the call has returned.
1457 #define efi_call_virt_pointer(p, f, args...) \
1460 unsigned long __flags; \
1462 arch_efi_call_virt_setup(); \
1464 local_save_flags(__flags); \
1465 __s = arch_efi_call_virt(p, f, args); \
1466 efi_call_virt_check_flags(__flags, __stringify(f)); \
1468 arch_efi_call_virt_teardown(); \
1473 #define __efi_call_virt_pointer(p, f, args...) \
1475 unsigned long __flags; \
1477 arch_efi_call_virt_setup(); \
1479 local_save_flags(__flags); \
1480 arch_efi_call_virt(p, f, args); \
1481 efi_call_virt_check_flags(__flags, __stringify(f)); \
1483 arch_efi_call_virt_teardown(); \
1486 typedef efi_status_t (*efi_exit_boot_map_processing
)(
1487 efi_system_table_t
*sys_table_arg
,
1488 struct efi_boot_memmap
*map
,
1491 efi_status_t
efi_exit_boot_services(efi_system_table_t
*sys_table
,
1493 struct efi_boot_memmap
*map
,
1495 efi_exit_boot_map_processing priv_func
);
1496 #endif /* _LINUX_EFI_H */