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_MAX_MEMORY_TYPE 14
90 /* Attribute values: */
91 #define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */
92 #define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */
93 #define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */
94 #define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */
95 #define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */
96 #define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */
97 #define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */
98 #define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */
99 #define EFI_MEMORY_DESCRIPTOR_VERSION 1
101 #define EFI_PAGE_SHIFT 12
102 #define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT)
118 } efi_capsule_header_t
;
121 * Allocation types for calls to boottime->allocate_pages.
123 #define EFI_ALLOCATE_ANY_PAGES 0
124 #define EFI_ALLOCATE_MAX_ADDRESS 1
125 #define EFI_ALLOCATE_ADDRESS 2
126 #define EFI_MAX_ALLOCATE_TYPE 3
128 typedef int (*efi_freemem_callback_t
) (u64 start
, u64 end
, void *arg
);
131 * Types and defines for Time Services
133 #define EFI_TIME_ADJUST_DAYLIGHT 0x1
134 #define EFI_TIME_IN_DAYLIGHT 0x2
135 #define EFI_UNSPECIFIED_TIMEZONE 0x07ff
172 u32 install_protocol_interface
;
173 u32 reinstall_protocol_interface
;
174 u32 uninstall_protocol_interface
;
177 u32 register_protocol_notify
;
179 u32 locate_device_path
;
180 u32 install_configuration_table
;
185 u32 exit_boot_services
;
186 u32 get_next_monotonic_count
;
188 u32 set_watchdog_timer
;
189 u32 connect_controller
;
190 u32 disconnect_controller
;
193 u32 open_protocol_information
;
194 u32 protocols_per_handle
;
195 u32 locate_handle_buffer
;
197 u32 install_multiple_protocol_interfaces
;
198 u32 uninstall_multiple_protocol_interfaces
;
203 } __packed efi_boot_services_32_t
;
220 u64 install_protocol_interface
;
221 u64 reinstall_protocol_interface
;
222 u64 uninstall_protocol_interface
;
225 u64 register_protocol_notify
;
227 u64 locate_device_path
;
228 u64 install_configuration_table
;
233 u64 exit_boot_services
;
234 u64 get_next_monotonic_count
;
236 u64 set_watchdog_timer
;
237 u64 connect_controller
;
238 u64 disconnect_controller
;
241 u64 open_protocol_information
;
242 u64 protocols_per_handle
;
243 u64 locate_handle_buffer
;
245 u64 install_multiple_protocol_interfaces
;
246 u64 uninstall_multiple_protocol_interfaces
;
251 } __packed efi_boot_services_64_t
;
254 * EFI Boot Services table
260 efi_status_t (*allocate_pages
)(int, int, unsigned long,
261 efi_physical_addr_t
*);
262 efi_status_t (*free_pages
)(efi_physical_addr_t
, unsigned long);
263 efi_status_t (*get_memory_map
)(unsigned long *, void *, unsigned long *,
264 unsigned long *, u32
*);
265 efi_status_t (*allocate_pool
)(int, unsigned long, void **);
266 efi_status_t (*free_pool
)(void *);
269 void *wait_for_event
;
273 void *install_protocol_interface
;
274 void *reinstall_protocol_interface
;
275 void *uninstall_protocol_interface
;
276 efi_status_t (*handle_protocol
)(efi_handle_t
, efi_guid_t
*, void **);
278 void *register_protocol_notify
;
280 void *locate_device_path
;
281 void *install_configuration_table
;
286 efi_status_t (*exit_boot_services
)(efi_handle_t
, unsigned long);
287 void *get_next_monotonic_count
;
289 void *set_watchdog_timer
;
290 void *connect_controller
;
291 void *disconnect_controller
;
293 void *close_protocol
;
294 void *open_protocol_information
;
295 void *protocols_per_handle
;
296 void *locate_handle_buffer
;
297 void *locate_protocol
;
298 void *install_multiple_protocol_interfaces
;
299 void *uninstall_multiple_protocol_interfaces
;
300 void *calculate_crc32
;
303 void *create_event_ex
;
304 } efi_boot_services_t
;
311 EfiPciIoWidthFifoUint8
,
312 EfiPciIoWidthFifoUint16
,
313 EfiPciIoWidthFifoUint32
,
314 EfiPciIoWidthFifoUint64
,
315 EfiPciIoWidthFillUint8
,
316 EfiPciIoWidthFillUint16
,
317 EfiPciIoWidthFillUint32
,
318 EfiPciIoWidthFillUint64
,
320 } EFI_PCI_IO_PROTOCOL_WIDTH
;
323 EfiPciIoAttributeOperationGet
,
324 EfiPciIoAttributeOperationSet
,
325 EfiPciIoAttributeOperationEnable
,
326 EfiPciIoAttributeOperationDisable
,
327 EfiPciIoAttributeOperationSupported
,
328 EfiPciIoAttributeOperationMaximum
329 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION
;
334 } efi_pci_io_protocol_access_32_t
;
339 } efi_pci_io_protocol_access_64_t
;
344 } efi_pci_io_protocol_access_t
;
349 efi_pci_io_protocol_access_32_t mem
;
350 efi_pci_io_protocol_access_32_t io
;
351 efi_pci_io_protocol_access_32_t pci
;
360 u32 get_bar_attributes
;
361 u32 set_bar_attributes
;
364 } efi_pci_io_protocol_32
;
369 efi_pci_io_protocol_access_64_t mem
;
370 efi_pci_io_protocol_access_64_t io
;
371 efi_pci_io_protocol_access_64_t pci
;
380 u64 get_bar_attributes
;
381 u64 set_bar_attributes
;
384 } efi_pci_io_protocol_64
;
389 efi_pci_io_protocol_access_t mem
;
390 efi_pci_io_protocol_access_t io
;
391 efi_pci_io_protocol_access_t pci
;
395 void *allocate_buffer
;
400 void *get_bar_attributes
;
401 void *set_bar_attributes
;
404 } efi_pci_io_protocol
;
406 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001
407 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002
408 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004
409 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008
410 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010
411 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020
412 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040
413 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080
414 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100
415 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200
416 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400
417 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800
418 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000
419 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000
420 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000
421 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000
422 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000
423 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000
424 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000
427 * Types and defines for EFI ResetSystem
429 #define EFI_RESET_COLD 0
430 #define EFI_RESET_WARM 1
431 #define EFI_RESET_SHUTDOWN 2
434 * EFI Runtime Services table
436 #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL)
437 #define EFI_RUNTIME_SERVICES_REVISION 0x00010000
445 u32 set_virtual_address_map
;
448 u32 get_next_variable
;
450 u32 get_next_high_mono_count
;
453 u32 query_capsule_caps
;
454 u32 query_variable_info
;
455 } efi_runtime_services_32_t
;
463 u64 set_virtual_address_map
;
466 u64 get_next_variable
;
468 u64 get_next_high_mono_count
;
471 u64 query_capsule_caps
;
472 u64 query_variable_info
;
473 } efi_runtime_services_64_t
;
479 void *get_wakeup_time
;
480 void *set_wakeup_time
;
481 void *set_virtual_address_map
;
482 void *convert_pointer
;
484 void *get_next_variable
;
486 void *get_next_high_mono_count
;
488 void *update_capsule
;
489 void *query_capsule_caps
;
490 void *query_variable_info
;
491 } efi_runtime_services_t
;
493 typedef efi_status_t
efi_get_time_t (efi_time_t
*tm
, efi_time_cap_t
*tc
);
494 typedef efi_status_t
efi_set_time_t (efi_time_t
*tm
);
495 typedef efi_status_t
efi_get_wakeup_time_t (efi_bool_t
*enabled
, efi_bool_t
*pending
,
497 typedef efi_status_t
efi_set_wakeup_time_t (efi_bool_t enabled
, efi_time_t
*tm
);
498 typedef efi_status_t
efi_get_variable_t (efi_char16_t
*name
, efi_guid_t
*vendor
, u32
*attr
,
499 unsigned long *data_size
, void *data
);
500 typedef efi_status_t
efi_get_next_variable_t (unsigned long *name_size
, efi_char16_t
*name
,
502 typedef efi_status_t
efi_set_variable_t (efi_char16_t
*name
, efi_guid_t
*vendor
,
503 u32 attr
, unsigned long data_size
,
505 typedef efi_status_t
efi_get_next_high_mono_count_t (u32
*count
);
506 typedef void efi_reset_system_t (int reset_type
, efi_status_t status
,
507 unsigned long data_size
, efi_char16_t
*data
);
508 typedef efi_status_t
efi_set_virtual_address_map_t (unsigned long memory_map_size
,
509 unsigned long descriptor_size
,
510 u32 descriptor_version
,
511 efi_memory_desc_t
*virtual_map
);
512 typedef efi_status_t
efi_query_variable_info_t(u32 attr
,
514 u64
*remaining_space
,
515 u64
*max_variable_size
);
516 typedef efi_status_t
efi_update_capsule_t(efi_capsule_header_t
**capsules
,
518 unsigned long sg_list
);
519 typedef efi_status_t
efi_query_capsule_caps_t(efi_capsule_header_t
**capsules
,
523 typedef efi_status_t
efi_query_variable_store_t(u32 attributes
, unsigned long size
);
525 void efi_native_runtime_setup(void);
528 * EFI Configuration Table and GUID definitions
531 EFI_GUID( 0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 )
533 #define MPS_TABLE_GUID \
534 EFI_GUID( 0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
536 #define ACPI_TABLE_GUID \
537 EFI_GUID( 0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
539 #define ACPI_20_TABLE_GUID \
540 EFI_GUID( 0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 )
542 #define SMBIOS_TABLE_GUID \
543 EFI_GUID( 0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
545 #define SAL_SYSTEM_TABLE_GUID \
546 EFI_GUID( 0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
548 #define HCDP_TABLE_GUID \
549 EFI_GUID( 0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98 )
551 #define UGA_IO_PROTOCOL_GUID \
552 EFI_GUID( 0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0xb, 0x7, 0xa2 )
554 #define EFI_GLOBAL_VARIABLE_GUID \
555 EFI_GUID( 0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c )
557 #define UV_SYSTEM_TABLE_GUID \
558 EFI_GUID( 0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93 )
560 #define LINUX_EFI_CRASH_GUID \
561 EFI_GUID( 0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0 )
563 #define LOADED_IMAGE_PROTOCOL_GUID \
564 EFI_GUID( 0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
566 #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \
567 EFI_GUID( 0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a )
569 #define EFI_UGA_PROTOCOL_GUID \
570 EFI_GUID( 0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39 )
572 #define EFI_PCI_IO_PROTOCOL_GUID \
573 EFI_GUID( 0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x2, 0x9a )
575 #define EFI_FILE_INFO_ID \
576 EFI_GUID( 0x9576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
578 #define EFI_FILE_SYSTEM_GUID \
579 EFI_GUID( 0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
581 #define DEVICE_TREE_GUID \
582 EFI_GUID( 0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0 )
587 } efi_config_table_64_t
;
592 } efi_config_table_32_t
;
597 } efi_config_table_t
;
603 } efi_config_table_type_t
;
605 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
607 #define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30))
608 #define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20))
609 #define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10))
610 #define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00))
611 #define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10))
612 #define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02))
616 u64 fw_vendor
; /* physical addr of CHAR16 vendor string */
630 } efi_system_table_64_t
;
634 u32 fw_vendor
; /* physical addr of CHAR16 vendor string */
646 } efi_system_table_32_t
;
650 unsigned long fw_vendor
; /* physical addr of CHAR16 vendor string */
652 unsigned long con_in_handle
;
653 unsigned long con_in
;
654 unsigned long con_out_handle
;
655 unsigned long con_out
;
656 unsigned long stderr_handle
;
657 unsigned long stderr
;
658 efi_runtime_services_t
*runtime
;
659 efi_boot_services_t
*boottime
;
660 unsigned long nr_tables
;
661 unsigned long tables
;
662 } efi_system_table_t
;
664 struct efi_memory_map
{
669 unsigned long desc_version
;
670 unsigned long desc_size
;
673 struct efi_fdt_params
{
688 u32 load_options_size
;
691 __aligned_u64 image_size
;
692 unsigned int image_code_type
;
693 unsigned int image_data_type
;
694 unsigned long unload
;
695 } efi_loaded_image_32_t
;
704 u32 load_options_size
;
707 __aligned_u64 image_size
;
708 unsigned int image_code_type
;
709 unsigned int image_data_type
;
710 unsigned long unload
;
711 } efi_loaded_image_64_t
;
716 efi_system_table_t
*system_table
;
720 u32 load_options_size
;
723 __aligned_u64 image_size
;
724 unsigned int image_code_type
;
725 unsigned int image_data_type
;
726 unsigned long unload
;
727 } efi_loaded_image_t
;
734 efi_time_t create_time
;
735 efi_time_t last_access_time
;
736 efi_time_t modification_time
;
737 __aligned_u64 attribute
;
738 efi_char16_t filename
[1];
753 } efi_file_handle_32_t
;
767 } efi_file_handle_64_t
;
769 typedef struct _efi_file_handle
{
771 efi_status_t (*open
)(struct _efi_file_handle
*,
772 struct _efi_file_handle
**,
773 efi_char16_t
*, u64
, u64
);
774 efi_status_t (*close
)(struct _efi_file_handle
*);
776 efi_status_t (*read
)(struct _efi_file_handle
*, unsigned long *,
781 efi_status_t (*get_info
)(struct _efi_file_handle
*, efi_guid_t
*,
782 unsigned long *, void *);
787 typedef struct _efi_file_io_interface
{
789 int (*open_volume
)(struct _efi_file_io_interface
*,
790 efi_file_handle_t
**);
791 } efi_file_io_interface_t
;
793 #define EFI_FILE_MODE_READ 0x0000000000000001
794 #define EFI_FILE_MODE_WRITE 0x0000000000000002
795 #define EFI_FILE_MODE_CREATE 0x8000000000000000
797 #define EFI_INVALID_TABLE_ADDR (~0UL)
800 * All runtime access to EFI goes through this structure:
803 efi_system_table_t
*systab
; /* EFI system table */
804 unsigned int runtime_version
; /* Runtime services version */
805 unsigned long mps
; /* MPS table */
806 unsigned long acpi
; /* ACPI table (IA64 ext 0.71) */
807 unsigned long acpi20
; /* ACPI table (ACPI 2.0) */
808 unsigned long smbios
; /* SM BIOS table */
809 unsigned long sal_systab
; /* SAL system table */
810 unsigned long boot_info
; /* boot info table */
811 unsigned long hcdp
; /* HCDP table */
812 unsigned long uga
; /* UGA table */
813 unsigned long uv_systab
; /* UV system table */
814 unsigned long fw_vendor
; /* fw_vendor */
815 unsigned long runtime
; /* runtime table */
816 unsigned long config_table
; /* config tables */
817 efi_get_time_t
*get_time
;
818 efi_set_time_t
*set_time
;
819 efi_get_wakeup_time_t
*get_wakeup_time
;
820 efi_set_wakeup_time_t
*set_wakeup_time
;
821 efi_get_variable_t
*get_variable
;
822 efi_get_next_variable_t
*get_next_variable
;
823 efi_set_variable_t
*set_variable
;
824 efi_query_variable_info_t
*query_variable_info
;
825 efi_update_capsule_t
*update_capsule
;
826 efi_query_capsule_caps_t
*query_capsule_caps
;
827 efi_get_next_high_mono_count_t
*get_next_high_mono_count
;
828 efi_reset_system_t
*reset_system
;
829 efi_set_virtual_address_map_t
*set_virtual_address_map
;
830 struct efi_memory_map
*memmap
;
835 efi_guidcmp (efi_guid_t left
, efi_guid_t right
)
837 return memcmp(&left
, &right
, sizeof (efi_guid_t
));
841 efi_guid_unparse(efi_guid_t
*guid
, char *out
)
843 sprintf(out
, "%pUl", guid
->b
);
847 extern void efi_init (void);
848 extern void *efi_get_pal_addr (void);
849 extern void efi_map_pal_code (void);
850 extern void efi_memmap_walk (efi_freemem_callback_t callback
, void *arg
);
851 extern void efi_gettimeofday (struct timespec
*ts
);
852 extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */
854 extern void efi_late_init(void);
855 extern void efi_free_boot_services(void);
856 extern efi_status_t
efi_query_variable_store(u32 attributes
, unsigned long size
);
858 static inline void efi_late_init(void) {}
859 static inline void efi_free_boot_services(void) {}
861 static inline efi_status_t
efi_query_variable_store(u32 attributes
, unsigned long size
)
866 extern void __iomem
*efi_lookup_mapped_addr(u64 phys_addr
);
867 extern int efi_config_init(efi_config_table_type_t
*arch_tables
);
868 extern u64
efi_get_iobase (void);
869 extern u32
efi_mem_type (unsigned long phys_addr
);
870 extern u64
efi_mem_attributes (unsigned long phys_addr
);
871 extern u64
efi_mem_attribute (unsigned long phys_addr
, unsigned long size
);
872 extern int __init
efi_uart_console_only (void);
873 extern void efi_initialize_iomem_resources(struct resource
*code_resource
,
874 struct resource
*data_resource
, struct resource
*bss_resource
);
875 extern void efi_get_time(struct timespec
*now
);
876 extern void efi_reserve_boot_services(void);
877 extern int efi_get_fdt_params(struct efi_fdt_params
*params
, int verbose
);
878 extern struct efi_memory_map memmap
;
880 extern int efi_reboot_quirk_mode
;
881 extern bool efi_poweroff_required(void);
883 /* Iterate through an efi_memory_map */
884 #define for_each_efi_memory_desc(m, md) \
885 for ((md) = (m)->map; \
886 (md) <= (efi_memory_desc_t *)((m)->map_end - (m)->desc_size); \
887 (md) = (void *)(md) + (m)->desc_size)
890 * efi_range_is_wc - check the WC bit on an address range
891 * @start: starting kvirt address
892 * @len: length of range
894 * Consult the EFI memory map and make sure it's ok to set this range WC.
895 * Returns true or false.
897 static inline int efi_range_is_wc(unsigned long start
, unsigned long len
)
901 for (i
= 0; i
< len
; i
+= (1UL << EFI_PAGE_SHIFT
)) {
902 unsigned long paddr
= __pa(start
+ i
);
903 if (!(efi_mem_attributes(paddr
) & EFI_MEMORY_WC
))
906 /* The range checked out */
910 #ifdef CONFIG_EFI_PCDP
911 extern int __init
efi_setup_pcdp_console(char *);
915 * We play games with efi_enabled so that the compiler will, if
916 * possible, remove EFI-related code altogether.
918 #define EFI_BOOT 0 /* Were we booted from EFI? */
919 #define EFI_SYSTEM_TABLES 1 /* Can we use EFI system tables? */
920 #define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */
921 #define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */
922 #define EFI_MEMMAP 4 /* Can we use EFI memory map? */
923 #define EFI_64BIT 5 /* Is the firmware 64-bit? */
924 #define EFI_PARAVIRT 6 /* Access is via a paravirt interface */
925 #define EFI_ARCH_1 7 /* First arch-specific bit */
929 * Test whether the above EFI_* bits are enabled.
931 static inline bool efi_enabled(int feature
)
933 return test_bit(feature
, &efi
.flags
) != 0;
935 extern void efi_reboot(enum reboot_mode reboot_mode
, const char *__unused
);
937 static inline bool efi_enabled(int feature
)
942 efi_reboot(enum reboot_mode reboot_mode
, const char *__unused
) {}
946 * Variable Attributes
948 #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001
949 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
950 #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004
951 #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008
952 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010
953 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
954 #define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040
956 #define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \
957 EFI_VARIABLE_BOOTSERVICE_ACCESS | \
958 EFI_VARIABLE_RUNTIME_ACCESS | \
959 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \
960 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \
961 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \
962 EFI_VARIABLE_APPEND_WRITE)
964 * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee"))
965 * not including trailing NUL
967 #define EFI_VARIABLE_GUID_LEN 36
970 * The type of search to perform when calling boottime->locate_handle
972 #define EFI_LOCATE_ALL_HANDLES 0
973 #define EFI_LOCATE_BY_REGISTER_NOTIFY 1
974 #define EFI_LOCATE_BY_PROTOCOL 2
977 * EFI Device Path information
979 #define EFI_DEV_HW 0x01
980 #define EFI_DEV_PCI 1
981 #define EFI_DEV_PCCARD 2
982 #define EFI_DEV_MEM_MAPPED 3
983 #define EFI_DEV_VENDOR 4
984 #define EFI_DEV_CONTROLLER 5
985 #define EFI_DEV_ACPI 0x02
986 #define EFI_DEV_BASIC_ACPI 1
987 #define EFI_DEV_EXPANDED_ACPI 2
988 #define EFI_DEV_MSG 0x03
989 #define EFI_DEV_MSG_ATAPI 1
990 #define EFI_DEV_MSG_SCSI 2
991 #define EFI_DEV_MSG_FC 3
992 #define EFI_DEV_MSG_1394 4
993 #define EFI_DEV_MSG_USB 5
994 #define EFI_DEV_MSG_USB_CLASS 15
995 #define EFI_DEV_MSG_I20 6
996 #define EFI_DEV_MSG_MAC 11
997 #define EFI_DEV_MSG_IPV4 12
998 #define EFI_DEV_MSG_IPV6 13
999 #define EFI_DEV_MSG_INFINIBAND 9
1000 #define EFI_DEV_MSG_UART 14
1001 #define EFI_DEV_MSG_VENDOR 10
1002 #define EFI_DEV_MEDIA 0x04
1003 #define EFI_DEV_MEDIA_HARD_DRIVE 1
1004 #define EFI_DEV_MEDIA_CDROM 2
1005 #define EFI_DEV_MEDIA_VENDOR 3
1006 #define EFI_DEV_MEDIA_FILE 4
1007 #define EFI_DEV_MEDIA_PROTOCOL 5
1008 #define EFI_DEV_BIOS_BOOT 0x05
1009 #define EFI_DEV_END_PATH 0x7F
1010 #define EFI_DEV_END_PATH2 0xFF
1011 #define EFI_DEV_END_INSTANCE 0x01
1012 #define EFI_DEV_END_ENTIRE 0xFF
1014 struct efi_generic_dev_path
{
1018 } __attribute ((packed
));
1020 static inline void memrange_efi_to_native(u64
*addr
, u64
*npages
)
1022 *npages
= PFN_UP(*addr
+ (*npages
<<EFI_PAGE_SHIFT
)) - PFN_DOWN(*addr
);
1027 * EFI Variable support.
1029 * Different firmware drivers can expose their EFI-like variables using
1033 struct efivar_operations
{
1034 efi_get_variable_t
*get_variable
;
1035 efi_get_next_variable_t
*get_next_variable
;
1036 efi_set_variable_t
*set_variable
;
1037 efi_query_variable_store_t
*query_variable_store
;
1042 * ->lock protects two things:
1043 * 1) efivarfs_list and efivars_sysfs_list
1048 struct kobject
*kobject
;
1049 const struct efivar_operations
*ops
;
1053 * The maximum size of VariableName + Data = 1024
1054 * Therefore, it's reasonable to save that much
1055 * space in each part of the structure,
1056 * and we use a page for reading/writing.
1059 #define EFI_VAR_NAME_LEN 1024
1061 struct efi_variable
{
1062 efi_char16_t VariableName
[EFI_VAR_NAME_LEN
/sizeof(efi_char16_t
)];
1063 efi_guid_t VendorGuid
;
1064 unsigned long DataSize
;
1066 efi_status_t Status
;
1068 } __attribute__((packed
));
1070 struct efivar_entry
{
1071 struct efi_variable var
;
1072 struct list_head list
;
1073 struct kobject kobj
;
1078 struct efi_simple_text_output_protocol_32
{
1084 struct efi_simple_text_output_protocol_64
{
1090 struct efi_simple_text_output_protocol
{
1092 efi_status_t (*output_string
)(void *, void *);
1096 extern struct list_head efivar_sysfs_list
;
1099 efivar_unregister(struct efivar_entry
*var
)
1101 kobject_put(&var
->kobj
);
1104 int efivars_register(struct efivars
*efivars
,
1105 const struct efivar_operations
*ops
,
1106 struct kobject
*kobject
);
1107 int efivars_unregister(struct efivars
*efivars
);
1108 struct kobject
*efivars_kobject(void);
1110 int efivar_init(int (*func
)(efi_char16_t
*, efi_guid_t
, unsigned long, void *),
1111 void *data
, bool atomic
, bool duplicates
,
1112 struct list_head
*head
);
1114 void efivar_entry_add(struct efivar_entry
*entry
, struct list_head
*head
);
1115 void efivar_entry_remove(struct efivar_entry
*entry
);
1117 int __efivar_entry_delete(struct efivar_entry
*entry
);
1118 int efivar_entry_delete(struct efivar_entry
*entry
);
1120 int efivar_entry_size(struct efivar_entry
*entry
, unsigned long *size
);
1121 int __efivar_entry_get(struct efivar_entry
*entry
, u32
*attributes
,
1122 unsigned long *size
, void *data
);
1123 int efivar_entry_get(struct efivar_entry
*entry
, u32
*attributes
,
1124 unsigned long *size
, void *data
);
1125 int efivar_entry_set(struct efivar_entry
*entry
, u32 attributes
,
1126 unsigned long size
, void *data
, struct list_head
*head
);
1127 int efivar_entry_set_get_size(struct efivar_entry
*entry
, u32 attributes
,
1128 unsigned long *size
, void *data
, bool *set
);
1129 int efivar_entry_set_safe(efi_char16_t
*name
, efi_guid_t vendor
, u32 attributes
,
1130 bool block
, unsigned long size
, void *data
);
1132 void efivar_entry_iter_begin(void);
1133 void efivar_entry_iter_end(void);
1135 int __efivar_entry_iter(int (*func
)(struct efivar_entry
*, void *),
1136 struct list_head
*head
, void *data
,
1137 struct efivar_entry
**prev
);
1138 int efivar_entry_iter(int (*func
)(struct efivar_entry
*, void *),
1139 struct list_head
*head
, void *data
);
1141 struct efivar_entry
*efivar_entry_find(efi_char16_t
*name
, efi_guid_t guid
,
1142 struct list_head
*head
, bool remove
);
1144 bool efivar_validate(efi_char16_t
*var_name
, u8
*data
, unsigned long len
);
1146 extern struct work_struct efivar_work
;
1147 void efivar_run_worker(void);
1149 #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE)
1150 int efivars_sysfs_init(void);
1152 #define EFIVARS_DATA_SIZE_MAX 1024
1154 #endif /* CONFIG_EFI_VARS */
1156 #ifdef CONFIG_EFI_RUNTIME_MAP
1157 int efi_runtime_map_init(struct kobject
*);
1158 void efi_runtime_map_setup(void *, int, u32
);
1159 int efi_get_runtime_map_size(void);
1160 int efi_get_runtime_map_desc_size(void);
1161 int efi_runtime_map_copy(void *buf
, size_t bufsz
);
1163 static inline int efi_runtime_map_init(struct kobject
*kobj
)
1169 efi_runtime_map_setup(void *map
, int nr_entries
, u32 desc_size
) {}
1171 static inline int efi_get_runtime_map_size(void)
1176 static inline int efi_get_runtime_map_desc_size(void)
1181 static inline int efi_runtime_map_copy(void *buf
, size_t bufsz
)
1188 /* prototypes shared between arch specific and generic stub code */
1190 #define pr_efi(sys_table, msg) efi_printk(sys_table, "EFI stub: "msg)
1191 #define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg)
1193 void efi_printk(efi_system_table_t
*sys_table_arg
, char *str
);
1195 void efi_free(efi_system_table_t
*sys_table_arg
, unsigned long size
,
1196 unsigned long addr
);
1198 char *efi_convert_cmdline(efi_system_table_t
*sys_table_arg
,
1199 efi_loaded_image_t
*image
, int *cmd_line_len
);
1201 efi_status_t
efi_get_memory_map(efi_system_table_t
*sys_table_arg
,
1202 efi_memory_desc_t
**map
,
1203 unsigned long *map_size
,
1204 unsigned long *desc_size
,
1206 unsigned long *key_ptr
);
1208 efi_status_t
efi_low_alloc(efi_system_table_t
*sys_table_arg
,
1209 unsigned long size
, unsigned long align
,
1210 unsigned long *addr
);
1212 efi_status_t
efi_high_alloc(efi_system_table_t
*sys_table_arg
,
1213 unsigned long size
, unsigned long align
,
1214 unsigned long *addr
, unsigned long max
);
1216 efi_status_t
efi_relocate_kernel(efi_system_table_t
*sys_table_arg
,
1217 unsigned long *image_addr
,
1218 unsigned long image_size
,
1219 unsigned long alloc_size
,
1220 unsigned long preferred_addr
,
1221 unsigned long alignment
);
1223 efi_status_t
handle_cmdline_files(efi_system_table_t
*sys_table_arg
,
1224 efi_loaded_image_t
*image
,
1225 char *cmd_line
, char *option_string
,
1226 unsigned long max_addr
,
1227 unsigned long *load_addr
,
1228 unsigned long *load_size
);
1230 #endif /* _LINUX_EFI_H */