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>
28 #define EFI_LOAD_ERROR ( 1 | (1UL << (BITS_PER_LONG-1)))
29 #define EFI_INVALID_PARAMETER ( 2 | (1UL << (BITS_PER_LONG-1)))
30 #define EFI_UNSUPPORTED ( 3 | (1UL << (BITS_PER_LONG-1)))
31 #define EFI_BAD_BUFFER_SIZE ( 4 | (1UL << (BITS_PER_LONG-1)))
32 #define EFI_BUFFER_TOO_SMALL ( 5 | (1UL << (BITS_PER_LONG-1)))
33 #define EFI_NOT_READY ( 6 | (1UL << (BITS_PER_LONG-1)))
34 #define EFI_DEVICE_ERROR ( 7 | (1UL << (BITS_PER_LONG-1)))
35 #define EFI_WRITE_PROTECTED ( 8 | (1UL << (BITS_PER_LONG-1)))
36 #define EFI_OUT_OF_RESOURCES ( 9 | (1UL << (BITS_PER_LONG-1)))
37 #define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG-1)))
38 #define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1)))
40 typedef unsigned long efi_status_t
;
41 typedef u8 efi_bool_t
;
42 typedef u16 efi_char16_t
; /* UNICODE character */
43 typedef u64 efi_physical_addr_t
;
44 typedef void *efi_handle_t
;
51 #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
53 {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
54 (b) & 0xff, ((b) >> 8) & 0xff, \
55 (c) & 0xff, ((c) >> 8) & 0xff, \
56 (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
59 * Generic EFI table header
70 * Memory map descriptor:
74 #define EFI_RESERVED_TYPE 0
75 #define EFI_LOADER_CODE 1
76 #define EFI_LOADER_DATA 2
77 #define EFI_BOOT_SERVICES_CODE 3
78 #define EFI_BOOT_SERVICES_DATA 4
79 #define EFI_RUNTIME_SERVICES_CODE 5
80 #define EFI_RUNTIME_SERVICES_DATA 6
81 #define EFI_CONVENTIONAL_MEMORY 7
82 #define EFI_UNUSABLE_MEMORY 8
83 #define EFI_ACPI_RECLAIM_MEMORY 9
84 #define EFI_ACPI_MEMORY_NVS 10
85 #define EFI_MEMORY_MAPPED_IO 11
86 #define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12
87 #define EFI_PAL_CODE 13
88 #define EFI_PERSISTENT_MEMORY 14
89 #define EFI_MAX_MEMORY_TYPE 15
91 /* Attribute values: */
92 #define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */
93 #define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */
94 #define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */
95 #define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */
96 #define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */
97 #define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */
98 #define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */
99 #define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */
100 #define EFI_MEMORY_MORE_RELIABLE \
101 ((u64)0x0000000000010000ULL) /* higher reliability */
102 #define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */
103 #define EFI_MEMORY_DESCRIPTOR_VERSION 1
105 #define EFI_PAGE_SHIFT 12
106 #define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT)
122 } efi_capsule_header_t
;
125 * Allocation types for calls to boottime->allocate_pages.
127 #define EFI_ALLOCATE_ANY_PAGES 0
128 #define EFI_ALLOCATE_MAX_ADDRESS 1
129 #define EFI_ALLOCATE_ADDRESS 2
130 #define EFI_MAX_ALLOCATE_TYPE 3
132 typedef int (*efi_freemem_callback_t
) (u64 start
, u64 end
, void *arg
);
135 * Types and defines for Time Services
137 #define EFI_TIME_ADJUST_DAYLIGHT 0x1
138 #define EFI_TIME_IN_DAYLIGHT 0x2
139 #define EFI_UNSPECIFIED_TIMEZONE 0x07ff
176 u32 install_protocol_interface
;
177 u32 reinstall_protocol_interface
;
178 u32 uninstall_protocol_interface
;
181 u32 register_protocol_notify
;
183 u32 locate_device_path
;
184 u32 install_configuration_table
;
189 u32 exit_boot_services
;
190 u32 get_next_monotonic_count
;
192 u32 set_watchdog_timer
;
193 u32 connect_controller
;
194 u32 disconnect_controller
;
197 u32 open_protocol_information
;
198 u32 protocols_per_handle
;
199 u32 locate_handle_buffer
;
201 u32 install_multiple_protocol_interfaces
;
202 u32 uninstall_multiple_protocol_interfaces
;
207 } __packed efi_boot_services_32_t
;
224 u64 install_protocol_interface
;
225 u64 reinstall_protocol_interface
;
226 u64 uninstall_protocol_interface
;
229 u64 register_protocol_notify
;
231 u64 locate_device_path
;
232 u64 install_configuration_table
;
237 u64 exit_boot_services
;
238 u64 get_next_monotonic_count
;
240 u64 set_watchdog_timer
;
241 u64 connect_controller
;
242 u64 disconnect_controller
;
245 u64 open_protocol_information
;
246 u64 protocols_per_handle
;
247 u64 locate_handle_buffer
;
249 u64 install_multiple_protocol_interfaces
;
250 u64 uninstall_multiple_protocol_interfaces
;
255 } __packed efi_boot_services_64_t
;
258 * EFI Boot Services table
264 efi_status_t (*allocate_pages
)(int, int, unsigned long,
265 efi_physical_addr_t
*);
266 efi_status_t (*free_pages
)(efi_physical_addr_t
, unsigned long);
267 efi_status_t (*get_memory_map
)(unsigned long *, void *, unsigned long *,
268 unsigned long *, u32
*);
269 efi_status_t (*allocate_pool
)(int, unsigned long, void **);
270 efi_status_t (*free_pool
)(void *);
273 void *wait_for_event
;
277 void *install_protocol_interface
;
278 void *reinstall_protocol_interface
;
279 void *uninstall_protocol_interface
;
280 efi_status_t (*handle_protocol
)(efi_handle_t
, efi_guid_t
*, void **);
282 void *register_protocol_notify
;
284 void *locate_device_path
;
285 void *install_configuration_table
;
290 efi_status_t (*exit_boot_services
)(efi_handle_t
, unsigned long);
291 void *get_next_monotonic_count
;
293 void *set_watchdog_timer
;
294 void *connect_controller
;
295 void *disconnect_controller
;
297 void *close_protocol
;
298 void *open_protocol_information
;
299 void *protocols_per_handle
;
300 void *locate_handle_buffer
;
301 void *locate_protocol
;
302 void *install_multiple_protocol_interfaces
;
303 void *uninstall_multiple_protocol_interfaces
;
304 void *calculate_crc32
;
307 void *create_event_ex
;
308 } efi_boot_services_t
;
315 EfiPciIoWidthFifoUint8
,
316 EfiPciIoWidthFifoUint16
,
317 EfiPciIoWidthFifoUint32
,
318 EfiPciIoWidthFifoUint64
,
319 EfiPciIoWidthFillUint8
,
320 EfiPciIoWidthFillUint16
,
321 EfiPciIoWidthFillUint32
,
322 EfiPciIoWidthFillUint64
,
324 } EFI_PCI_IO_PROTOCOL_WIDTH
;
327 EfiPciIoAttributeOperationGet
,
328 EfiPciIoAttributeOperationSet
,
329 EfiPciIoAttributeOperationEnable
,
330 EfiPciIoAttributeOperationDisable
,
331 EfiPciIoAttributeOperationSupported
,
332 EfiPciIoAttributeOperationMaximum
333 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION
;
338 } efi_pci_io_protocol_access_32_t
;
343 } efi_pci_io_protocol_access_64_t
;
348 } efi_pci_io_protocol_access_t
;
353 efi_pci_io_protocol_access_32_t mem
;
354 efi_pci_io_protocol_access_32_t io
;
355 efi_pci_io_protocol_access_32_t pci
;
364 u32 get_bar_attributes
;
365 u32 set_bar_attributes
;
368 } efi_pci_io_protocol_32
;
373 efi_pci_io_protocol_access_64_t mem
;
374 efi_pci_io_protocol_access_64_t io
;
375 efi_pci_io_protocol_access_64_t pci
;
384 u64 get_bar_attributes
;
385 u64 set_bar_attributes
;
388 } efi_pci_io_protocol_64
;
393 efi_pci_io_protocol_access_t mem
;
394 efi_pci_io_protocol_access_t io
;
395 efi_pci_io_protocol_access_t pci
;
399 void *allocate_buffer
;
404 void *get_bar_attributes
;
405 void *set_bar_attributes
;
408 } efi_pci_io_protocol
;
410 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001
411 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002
412 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004
413 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008
414 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010
415 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020
416 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040
417 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080
418 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100
419 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200
420 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400
421 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800
422 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000
423 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000
424 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000
425 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000
426 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000
427 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000
428 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000
431 * Types and defines for EFI ResetSystem
433 #define EFI_RESET_COLD 0
434 #define EFI_RESET_WARM 1
435 #define EFI_RESET_SHUTDOWN 2
438 * EFI Runtime Services table
440 #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL)
441 #define EFI_RUNTIME_SERVICES_REVISION 0x00010000
449 u32 set_virtual_address_map
;
452 u32 get_next_variable
;
454 u32 get_next_high_mono_count
;
457 u32 query_capsule_caps
;
458 u32 query_variable_info
;
459 } efi_runtime_services_32_t
;
467 u64 set_virtual_address_map
;
470 u64 get_next_variable
;
472 u64 get_next_high_mono_count
;
475 u64 query_capsule_caps
;
476 u64 query_variable_info
;
477 } efi_runtime_services_64_t
;
483 void *get_wakeup_time
;
484 void *set_wakeup_time
;
485 void *set_virtual_address_map
;
486 void *convert_pointer
;
488 void *get_next_variable
;
490 void *get_next_high_mono_count
;
492 void *update_capsule
;
493 void *query_capsule_caps
;
494 void *query_variable_info
;
495 } efi_runtime_services_t
;
497 typedef efi_status_t
efi_get_time_t (efi_time_t
*tm
, efi_time_cap_t
*tc
);
498 typedef efi_status_t
efi_set_time_t (efi_time_t
*tm
);
499 typedef efi_status_t
efi_get_wakeup_time_t (efi_bool_t
*enabled
, efi_bool_t
*pending
,
501 typedef efi_status_t
efi_set_wakeup_time_t (efi_bool_t enabled
, efi_time_t
*tm
);
502 typedef efi_status_t
efi_get_variable_t (efi_char16_t
*name
, efi_guid_t
*vendor
, u32
*attr
,
503 unsigned long *data_size
, void *data
);
504 typedef efi_status_t
efi_get_next_variable_t (unsigned long *name_size
, efi_char16_t
*name
,
506 typedef efi_status_t
efi_set_variable_t (efi_char16_t
*name
, efi_guid_t
*vendor
,
507 u32 attr
, unsigned long data_size
,
510 efi_set_variable_nonblocking_t(efi_char16_t
*name
, efi_guid_t
*vendor
,
511 u32 attr
, unsigned long data_size
, void *data
);
513 typedef efi_status_t
efi_get_next_high_mono_count_t (u32
*count
);
514 typedef void efi_reset_system_t (int reset_type
, efi_status_t status
,
515 unsigned long data_size
, efi_char16_t
*data
);
516 typedef efi_status_t
efi_set_virtual_address_map_t (unsigned long memory_map_size
,
517 unsigned long descriptor_size
,
518 u32 descriptor_version
,
519 efi_memory_desc_t
*virtual_map
);
520 typedef efi_status_t
efi_query_variable_info_t(u32 attr
,
522 u64
*remaining_space
,
523 u64
*max_variable_size
);
524 typedef efi_status_t
efi_update_capsule_t(efi_capsule_header_t
**capsules
,
526 unsigned long sg_list
);
527 typedef efi_status_t
efi_query_capsule_caps_t(efi_capsule_header_t
**capsules
,
531 typedef efi_status_t
efi_query_variable_store_t(u32 attributes
, unsigned long size
);
533 void efi_native_runtime_setup(void);
536 * EFI Configuration Table and GUID definitions
539 EFI_GUID( 0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 )
541 #define MPS_TABLE_GUID \
542 EFI_GUID( 0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
544 #define ACPI_TABLE_GUID \
545 EFI_GUID( 0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
547 #define ACPI_20_TABLE_GUID \
548 EFI_GUID( 0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 )
550 #define SMBIOS_TABLE_GUID \
551 EFI_GUID( 0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
553 #define SMBIOS3_TABLE_GUID \
554 EFI_GUID( 0xf2fd1544, 0x9794, 0x4a2c, 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94 )
556 #define SAL_SYSTEM_TABLE_GUID \
557 EFI_GUID( 0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
559 #define HCDP_TABLE_GUID \
560 EFI_GUID( 0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98 )
562 #define UGA_IO_PROTOCOL_GUID \
563 EFI_GUID( 0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0xb, 0x7, 0xa2 )
565 #define EFI_GLOBAL_VARIABLE_GUID \
566 EFI_GUID( 0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c )
568 #define UV_SYSTEM_TABLE_GUID \
569 EFI_GUID( 0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93 )
571 #define LINUX_EFI_CRASH_GUID \
572 EFI_GUID( 0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0 )
574 #define LOADED_IMAGE_PROTOCOL_GUID \
575 EFI_GUID( 0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
577 #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \
578 EFI_GUID( 0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a )
580 #define EFI_UGA_PROTOCOL_GUID \
581 EFI_GUID( 0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39 )
583 #define EFI_PCI_IO_PROTOCOL_GUID \
584 EFI_GUID( 0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x2, 0x9a )
586 #define EFI_FILE_INFO_ID \
587 EFI_GUID( 0x9576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
589 #define EFI_SYSTEM_RESOURCE_TABLE_GUID \
590 EFI_GUID( 0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80 )
592 #define EFI_FILE_SYSTEM_GUID \
593 EFI_GUID( 0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
595 #define DEVICE_TREE_GUID \
596 EFI_GUID( 0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0 )
601 } efi_config_table_64_t
;
606 } efi_config_table_32_t
;
611 } efi_config_table_t
;
617 } efi_config_table_type_t
;
619 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
621 #define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30))
622 #define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20))
623 #define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10))
624 #define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00))
625 #define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10))
626 #define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02))
630 u64 fw_vendor
; /* physical addr of CHAR16 vendor string */
644 } efi_system_table_64_t
;
648 u32 fw_vendor
; /* physical addr of CHAR16 vendor string */
660 } efi_system_table_32_t
;
664 unsigned long fw_vendor
; /* physical addr of CHAR16 vendor string */
666 unsigned long con_in_handle
;
667 unsigned long con_in
;
668 unsigned long con_out_handle
;
669 unsigned long con_out
;
670 unsigned long stderr_handle
;
671 unsigned long stderr
;
672 efi_runtime_services_t
*runtime
;
673 efi_boot_services_t
*boottime
;
674 unsigned long nr_tables
;
675 unsigned long tables
;
676 } efi_system_table_t
;
678 struct efi_memory_map
{
683 unsigned long desc_version
;
684 unsigned long desc_size
;
687 struct efi_fdt_params
{
702 u32 load_options_size
;
705 __aligned_u64 image_size
;
706 unsigned int image_code_type
;
707 unsigned int image_data_type
;
708 unsigned long unload
;
709 } efi_loaded_image_32_t
;
718 u32 load_options_size
;
721 __aligned_u64 image_size
;
722 unsigned int image_code_type
;
723 unsigned int image_data_type
;
724 unsigned long unload
;
725 } efi_loaded_image_64_t
;
730 efi_system_table_t
*system_table
;
734 u32 load_options_size
;
737 __aligned_u64 image_size
;
738 unsigned int image_code_type
;
739 unsigned int image_data_type
;
740 unsigned long unload
;
741 } efi_loaded_image_t
;
748 efi_time_t create_time
;
749 efi_time_t last_access_time
;
750 efi_time_t modification_time
;
751 __aligned_u64 attribute
;
752 efi_char16_t filename
[1];
767 } efi_file_handle_32_t
;
781 } efi_file_handle_64_t
;
783 typedef struct _efi_file_handle
{
785 efi_status_t (*open
)(struct _efi_file_handle
*,
786 struct _efi_file_handle
**,
787 efi_char16_t
*, u64
, u64
);
788 efi_status_t (*close
)(struct _efi_file_handle
*);
790 efi_status_t (*read
)(struct _efi_file_handle
*, unsigned long *,
795 efi_status_t (*get_info
)(struct _efi_file_handle
*, efi_guid_t
*,
796 unsigned long *, void *);
801 typedef struct _efi_file_io_interface
{
803 int (*open_volume
)(struct _efi_file_io_interface
*,
804 efi_file_handle_t
**);
805 } efi_file_io_interface_t
;
807 #define EFI_FILE_MODE_READ 0x0000000000000001
808 #define EFI_FILE_MODE_WRITE 0x0000000000000002
809 #define EFI_FILE_MODE_CREATE 0x8000000000000000
811 #define EFI_INVALID_TABLE_ADDR (~0UL)
814 * All runtime access to EFI goes through this structure:
817 efi_system_table_t
*systab
; /* EFI system table */
818 unsigned int runtime_version
; /* Runtime services version */
819 unsigned long mps
; /* MPS table */
820 unsigned long acpi
; /* ACPI table (IA64 ext 0.71) */
821 unsigned long acpi20
; /* ACPI table (ACPI 2.0) */
822 unsigned long smbios
; /* SMBIOS table (32 bit entry point) */
823 unsigned long smbios3
; /* SMBIOS table (64 bit entry point) */
824 unsigned long sal_systab
; /* SAL system table */
825 unsigned long boot_info
; /* boot info table */
826 unsigned long hcdp
; /* HCDP table */
827 unsigned long uga
; /* UGA table */
828 unsigned long uv_systab
; /* UV system table */
829 unsigned long fw_vendor
; /* fw_vendor */
830 unsigned long runtime
; /* runtime table */
831 unsigned long config_table
; /* config tables */
832 unsigned long esrt
; /* ESRT table */
833 efi_get_time_t
*get_time
;
834 efi_set_time_t
*set_time
;
835 efi_get_wakeup_time_t
*get_wakeup_time
;
836 efi_set_wakeup_time_t
*set_wakeup_time
;
837 efi_get_variable_t
*get_variable
;
838 efi_get_next_variable_t
*get_next_variable
;
839 efi_set_variable_t
*set_variable
;
840 efi_set_variable_nonblocking_t
*set_variable_nonblocking
;
841 efi_query_variable_info_t
*query_variable_info
;
842 efi_update_capsule_t
*update_capsule
;
843 efi_query_capsule_caps_t
*query_capsule_caps
;
844 efi_get_next_high_mono_count_t
*get_next_high_mono_count
;
845 efi_reset_system_t
*reset_system
;
846 efi_set_virtual_address_map_t
*set_virtual_address_map
;
847 struct efi_memory_map
*memmap
;
852 efi_guidcmp (efi_guid_t left
, efi_guid_t right
)
854 return memcmp(&left
, &right
, sizeof (efi_guid_t
));
858 efi_guid_to_str(efi_guid_t
*guid
, char *out
)
860 sprintf(out
, "%pUl", guid
->b
);
864 extern void efi_init (void);
865 extern void *efi_get_pal_addr (void);
866 extern void efi_map_pal_code (void);
867 extern void efi_memmap_walk (efi_freemem_callback_t callback
, void *arg
);
868 extern void efi_gettimeofday (struct timespec
*ts
);
869 extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */
871 extern void efi_late_init(void);
872 extern void efi_free_boot_services(void);
873 extern efi_status_t
efi_query_variable_store(u32 attributes
, unsigned long size
);
874 extern void efi_find_mirror(void);
876 static inline void efi_late_init(void) {}
877 static inline void efi_free_boot_services(void) {}
879 static inline efi_status_t
efi_query_variable_store(u32 attributes
, unsigned long size
)
884 extern void __iomem
*efi_lookup_mapped_addr(u64 phys_addr
);
885 extern int efi_config_init(efi_config_table_type_t
*arch_tables
);
886 #ifdef CONFIG_EFI_ESRT
887 extern void __init
efi_esrt_init(void);
889 static inline void efi_esrt_init(void) { }
891 extern int efi_config_parse_tables(void *config_tables
, int count
, int sz
,
892 efi_config_table_type_t
*arch_tables
);
893 extern u64
efi_get_iobase (void);
894 extern u32
efi_mem_type (unsigned long phys_addr
);
895 extern u64
efi_mem_attributes (unsigned long phys_addr
);
896 extern u64
efi_mem_attribute (unsigned long phys_addr
, unsigned long size
);
897 extern int __init
efi_uart_console_only (void);
898 extern u64
efi_mem_desc_end(efi_memory_desc_t
*md
);
899 extern int efi_mem_desc_lookup(u64 phys_addr
, efi_memory_desc_t
*out_md
);
900 extern void efi_initialize_iomem_resources(struct resource
*code_resource
,
901 struct resource
*data_resource
, struct resource
*bss_resource
);
902 extern void efi_get_time(struct timespec
*now
);
903 extern void efi_reserve_boot_services(void);
904 extern int efi_get_fdt_params(struct efi_fdt_params
*params
, int verbose
);
905 extern struct efi_memory_map memmap
;
906 extern struct kobject
*efi_kobj
;
908 extern int efi_reboot_quirk_mode
;
909 extern bool efi_poweroff_required(void);
911 /* Iterate through an efi_memory_map */
912 #define for_each_efi_memory_desc(m, md) \
913 for ((md) = (m)->map; \
914 (md) <= (efi_memory_desc_t *)((m)->map_end - (m)->desc_size); \
915 (md) = (void *)(md) + (m)->desc_size)
918 * Format an EFI memory descriptor's type and attributes to a user-provided
919 * character buffer, as per snprintf(), and return the buffer.
921 char * __init
efi_md_typeattr_format(char *buf
, size_t size
,
922 const efi_memory_desc_t
*md
);
925 * efi_range_is_wc - check the WC bit on an address range
926 * @start: starting kvirt address
927 * @len: length of range
929 * Consult the EFI memory map and make sure it's ok to set this range WC.
930 * Returns true or false.
932 static inline int efi_range_is_wc(unsigned long start
, unsigned long len
)
936 for (i
= 0; i
< len
; i
+= (1UL << EFI_PAGE_SHIFT
)) {
937 unsigned long paddr
= __pa(start
+ i
);
938 if (!(efi_mem_attributes(paddr
) & EFI_MEMORY_WC
))
941 /* The range checked out */
945 #ifdef CONFIG_EFI_PCDP
946 extern int __init
efi_setup_pcdp_console(char *);
950 * We play games with efi_enabled so that the compiler will, if
951 * possible, remove EFI-related code altogether.
953 #define EFI_BOOT 0 /* Were we booted from EFI? */
954 #define EFI_SYSTEM_TABLES 1 /* Can we use EFI system tables? */
955 #define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */
956 #define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */
957 #define EFI_MEMMAP 4 /* Can we use EFI memory map? */
958 #define EFI_64BIT 5 /* Is the firmware 64-bit? */
959 #define EFI_PARAVIRT 6 /* Access is via a paravirt interface */
960 #define EFI_ARCH_1 7 /* First arch-specific bit */
961 #define EFI_DBG 8 /* Print additional debug info at runtime */
965 * Test whether the above EFI_* bits are enabled.
967 static inline bool efi_enabled(int feature
)
969 return test_bit(feature
, &efi
.flags
) != 0;
971 extern void efi_reboot(enum reboot_mode reboot_mode
, const char *__unused
);
973 static inline bool efi_enabled(int feature
)
978 efi_reboot(enum reboot_mode reboot_mode
, const char *__unused
) {}
982 * Variable Attributes
984 #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001
985 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
986 #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004
987 #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008
988 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010
989 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
990 #define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040
992 #define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \
993 EFI_VARIABLE_BOOTSERVICE_ACCESS | \
994 EFI_VARIABLE_RUNTIME_ACCESS | \
995 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \
996 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \
997 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \
998 EFI_VARIABLE_APPEND_WRITE)
1000 * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee"))
1001 * not including trailing NUL
1003 #define EFI_VARIABLE_GUID_LEN 36
1006 * The type of search to perform when calling boottime->locate_handle
1008 #define EFI_LOCATE_ALL_HANDLES 0
1009 #define EFI_LOCATE_BY_REGISTER_NOTIFY 1
1010 #define EFI_LOCATE_BY_PROTOCOL 2
1013 * EFI Device Path information
1015 #define EFI_DEV_HW 0x01
1016 #define EFI_DEV_PCI 1
1017 #define EFI_DEV_PCCARD 2
1018 #define EFI_DEV_MEM_MAPPED 3
1019 #define EFI_DEV_VENDOR 4
1020 #define EFI_DEV_CONTROLLER 5
1021 #define EFI_DEV_ACPI 0x02
1022 #define EFI_DEV_BASIC_ACPI 1
1023 #define EFI_DEV_EXPANDED_ACPI 2
1024 #define EFI_DEV_MSG 0x03
1025 #define EFI_DEV_MSG_ATAPI 1
1026 #define EFI_DEV_MSG_SCSI 2
1027 #define EFI_DEV_MSG_FC 3
1028 #define EFI_DEV_MSG_1394 4
1029 #define EFI_DEV_MSG_USB 5
1030 #define EFI_DEV_MSG_USB_CLASS 15
1031 #define EFI_DEV_MSG_I20 6
1032 #define EFI_DEV_MSG_MAC 11
1033 #define EFI_DEV_MSG_IPV4 12
1034 #define EFI_DEV_MSG_IPV6 13
1035 #define EFI_DEV_MSG_INFINIBAND 9
1036 #define EFI_DEV_MSG_UART 14
1037 #define EFI_DEV_MSG_VENDOR 10
1038 #define EFI_DEV_MEDIA 0x04
1039 #define EFI_DEV_MEDIA_HARD_DRIVE 1
1040 #define EFI_DEV_MEDIA_CDROM 2
1041 #define EFI_DEV_MEDIA_VENDOR 3
1042 #define EFI_DEV_MEDIA_FILE 4
1043 #define EFI_DEV_MEDIA_PROTOCOL 5
1044 #define EFI_DEV_BIOS_BOOT 0x05
1045 #define EFI_DEV_END_PATH 0x7F
1046 #define EFI_DEV_END_PATH2 0xFF
1047 #define EFI_DEV_END_INSTANCE 0x01
1048 #define EFI_DEV_END_ENTIRE 0xFF
1050 struct efi_generic_dev_path
{
1054 } __attribute ((packed
));
1056 static inline void memrange_efi_to_native(u64
*addr
, u64
*npages
)
1058 *npages
= PFN_UP(*addr
+ (*npages
<<EFI_PAGE_SHIFT
)) - PFN_DOWN(*addr
);
1063 * EFI Variable support.
1065 * Different firmware drivers can expose their EFI-like variables using
1069 struct efivar_operations
{
1070 efi_get_variable_t
*get_variable
;
1071 efi_get_next_variable_t
*get_next_variable
;
1072 efi_set_variable_t
*set_variable
;
1073 efi_set_variable_nonblocking_t
*set_variable_nonblocking
;
1074 efi_query_variable_store_t
*query_variable_store
;
1079 * ->lock protects two things:
1080 * 1) efivarfs_list and efivars_sysfs_list
1085 struct kobject
*kobject
;
1086 const struct efivar_operations
*ops
;
1090 * The maximum size of VariableName + Data = 1024
1091 * Therefore, it's reasonable to save that much
1092 * space in each part of the structure,
1093 * and we use a page for reading/writing.
1096 #define EFI_VAR_NAME_LEN 1024
1098 struct efi_variable
{
1099 efi_char16_t VariableName
[EFI_VAR_NAME_LEN
/sizeof(efi_char16_t
)];
1100 efi_guid_t VendorGuid
;
1101 unsigned long DataSize
;
1103 efi_status_t Status
;
1105 } __attribute__((packed
));
1107 struct efivar_entry
{
1108 struct efi_variable var
;
1109 struct list_head list
;
1110 struct kobject kobj
;
1115 struct efi_simple_text_output_protocol_32
{
1121 struct efi_simple_text_output_protocol_64
{
1127 struct efi_simple_text_output_protocol
{
1129 efi_status_t (*output_string
)(void *, void *);
1133 extern struct list_head efivar_sysfs_list
;
1136 efivar_unregister(struct efivar_entry
*var
)
1138 kobject_put(&var
->kobj
);
1141 int efivars_register(struct efivars
*efivars
,
1142 const struct efivar_operations
*ops
,
1143 struct kobject
*kobject
);
1144 int efivars_unregister(struct efivars
*efivars
);
1145 struct kobject
*efivars_kobject(void);
1147 int efivar_init(int (*func
)(efi_char16_t
*, efi_guid_t
, unsigned long, void *),
1148 void *data
, bool atomic
, bool duplicates
,
1149 struct list_head
*head
);
1151 void efivar_entry_add(struct efivar_entry
*entry
, struct list_head
*head
);
1152 void efivar_entry_remove(struct efivar_entry
*entry
);
1154 int __efivar_entry_delete(struct efivar_entry
*entry
);
1155 int efivar_entry_delete(struct efivar_entry
*entry
);
1157 int efivar_entry_size(struct efivar_entry
*entry
, unsigned long *size
);
1158 int __efivar_entry_get(struct efivar_entry
*entry
, u32
*attributes
,
1159 unsigned long *size
, void *data
);
1160 int efivar_entry_get(struct efivar_entry
*entry
, u32
*attributes
,
1161 unsigned long *size
, void *data
);
1162 int efivar_entry_set(struct efivar_entry
*entry
, u32 attributes
,
1163 unsigned long size
, void *data
, struct list_head
*head
);
1164 int efivar_entry_set_get_size(struct efivar_entry
*entry
, u32 attributes
,
1165 unsigned long *size
, void *data
, bool *set
);
1166 int efivar_entry_set_safe(efi_char16_t
*name
, efi_guid_t vendor
, u32 attributes
,
1167 bool block
, unsigned long size
, void *data
);
1169 void efivar_entry_iter_begin(void);
1170 void efivar_entry_iter_end(void);
1172 int __efivar_entry_iter(int (*func
)(struct efivar_entry
*, void *),
1173 struct list_head
*head
, void *data
,
1174 struct efivar_entry
**prev
);
1175 int efivar_entry_iter(int (*func
)(struct efivar_entry
*, void *),
1176 struct list_head
*head
, void *data
);
1178 struct efivar_entry
*efivar_entry_find(efi_char16_t
*name
, efi_guid_t guid
,
1179 struct list_head
*head
, bool remove
);
1181 bool efivar_validate(efi_char16_t
*var_name
, u8
*data
, unsigned long len
);
1183 extern struct work_struct efivar_work
;
1184 void efivar_run_worker(void);
1186 #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE)
1187 int efivars_sysfs_init(void);
1189 #define EFIVARS_DATA_SIZE_MAX 1024
1191 #endif /* CONFIG_EFI_VARS */
1193 #ifdef CONFIG_EFI_RUNTIME_MAP
1194 int efi_runtime_map_init(struct kobject
*);
1195 void efi_runtime_map_setup(void *, int, u32
);
1196 int efi_get_runtime_map_size(void);
1197 int efi_get_runtime_map_desc_size(void);
1198 int efi_runtime_map_copy(void *buf
, size_t bufsz
);
1200 static inline int efi_runtime_map_init(struct kobject
*kobj
)
1206 efi_runtime_map_setup(void *map
, int nr_entries
, u32 desc_size
) {}
1208 static inline int efi_get_runtime_map_size(void)
1213 static inline int efi_get_runtime_map_desc_size(void)
1218 static inline int efi_runtime_map_copy(void *buf
, size_t bufsz
)
1225 /* prototypes shared between arch specific and generic stub code */
1227 #define pr_efi(sys_table, msg) efi_printk(sys_table, "EFI stub: "msg)
1228 #define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg)
1230 void efi_printk(efi_system_table_t
*sys_table_arg
, char *str
);
1232 void efi_free(efi_system_table_t
*sys_table_arg
, unsigned long size
,
1233 unsigned long addr
);
1235 char *efi_convert_cmdline(efi_system_table_t
*sys_table_arg
,
1236 efi_loaded_image_t
*image
, int *cmd_line_len
);
1238 efi_status_t
efi_get_memory_map(efi_system_table_t
*sys_table_arg
,
1239 efi_memory_desc_t
**map
,
1240 unsigned long *map_size
,
1241 unsigned long *desc_size
,
1243 unsigned long *key_ptr
);
1245 efi_status_t
efi_low_alloc(efi_system_table_t
*sys_table_arg
,
1246 unsigned long size
, unsigned long align
,
1247 unsigned long *addr
);
1249 efi_status_t
efi_high_alloc(efi_system_table_t
*sys_table_arg
,
1250 unsigned long size
, unsigned long align
,
1251 unsigned long *addr
, unsigned long max
);
1253 efi_status_t
efi_relocate_kernel(efi_system_table_t
*sys_table_arg
,
1254 unsigned long *image_addr
,
1255 unsigned long image_size
,
1256 unsigned long alloc_size
,
1257 unsigned long preferred_addr
,
1258 unsigned long alignment
);
1260 efi_status_t
handle_cmdline_files(efi_system_table_t
*sys_table_arg
,
1261 efi_loaded_image_t
*image
,
1262 char *cmd_line
, char *option_string
,
1263 unsigned long max_addr
,
1264 unsigned long *load_addr
,
1265 unsigned long *load_size
);
1267 efi_status_t
efi_parse_options(char *cmdline
);
1269 bool efi_runtime_disabled(void);
1270 #endif /* _LINUX_EFI_H */