Merge branch 'mailbox-devel' of git://git.linaro.org/landing-teams/working/fujitsu...
[firefly-linux-kernel-4.4.55.git] / include / linux / efi.h
1 #ifndef _LINUX_EFI_H
2 #define _LINUX_EFI_H
3
4 /*
5  * Extensible Firmware Interface
6  * Based on 'Extensible Firmware Interface Specification' version 0.9, April 30, 1999
7  *
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>
13  */
14 #include <linux/init.h>
15 #include <linux/string.h>
16 #include <linux/time.h>
17 #include <linux/types.h>
18 #include <linux/proc_fs.h>
19 #include <linux/rtc.h>
20 #include <linux/ioport.h>
21 #include <linux/pfn.h>
22 #include <linux/pstore.h>
23 #include <linux/reboot.h>
24
25 #include <asm/page.h>
26
27 #define EFI_SUCCESS             0
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)))
39
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;
45
46
47 typedef struct {
48         u8 b[16];
49 } efi_guid_t;
50
51 #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
52 ((efi_guid_t) \
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) }})
57
58 /*
59  * Generic EFI table header
60  */
61 typedef struct {
62         u64 signature;
63         u32 revision;
64         u32 headersize;
65         u32 crc32;
66         u32 reserved;
67 } efi_table_hdr_t;
68
69 /*
70  * Memory map descriptor:
71  */
72
73 /* Memory types: */
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
89
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_UCE          ((u64)0x0000000000000010ULL)    /* uncached, exported */
96 #define EFI_MEMORY_WP           ((u64)0x0000000000001000ULL)    /* write-protect */
97 #define EFI_MEMORY_RP           ((u64)0x0000000000002000ULL)    /* read-protect */
98 #define EFI_MEMORY_XP           ((u64)0x0000000000004000ULL)    /* execute-protect */
99 #define EFI_MEMORY_RUNTIME      ((u64)0x8000000000000000ULL)    /* range requires runtime mapping */
100 #define EFI_MEMORY_DESCRIPTOR_VERSION   1
101
102 #define EFI_PAGE_SHIFT          12
103 #define EFI_PAGE_SIZE           (1UL << EFI_PAGE_SHIFT)
104
105 typedef struct {
106         u32 type;
107         u32 pad;
108         u64 phys_addr;
109         u64 virt_addr;
110         u64 num_pages;
111         u64 attribute;
112 } efi_memory_desc_t;
113
114 typedef struct {
115         efi_guid_t guid;
116         u32 headersize;
117         u32 flags;
118         u32 imagesize;
119 } efi_capsule_header_t;
120
121 /*
122  * Allocation types for calls to boottime->allocate_pages.
123  */
124 #define EFI_ALLOCATE_ANY_PAGES          0
125 #define EFI_ALLOCATE_MAX_ADDRESS        1
126 #define EFI_ALLOCATE_ADDRESS            2
127 #define EFI_MAX_ALLOCATE_TYPE           3
128
129 typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg);
130
131 /*
132  * Types and defines for Time Services
133  */
134 #define EFI_TIME_ADJUST_DAYLIGHT 0x1
135 #define EFI_TIME_IN_DAYLIGHT     0x2
136 #define EFI_UNSPECIFIED_TIMEZONE 0x07ff
137
138 typedef struct {
139         u16 year;
140         u8 month;
141         u8 day;
142         u8 hour;
143         u8 minute;
144         u8 second;
145         u8 pad1;
146         u32 nanosecond;
147         s16 timezone;
148         u8 daylight;
149         u8 pad2;
150 } efi_time_t;
151
152 typedef struct {
153         u32 resolution;
154         u32 accuracy;
155         u8 sets_to_zero;
156 } efi_time_cap_t;
157
158 typedef struct {
159         efi_table_hdr_t hdr;
160         u32 raise_tpl;
161         u32 restore_tpl;
162         u32 allocate_pages;
163         u32 free_pages;
164         u32 get_memory_map;
165         u32 allocate_pool;
166         u32 free_pool;
167         u32 create_event;
168         u32 set_timer;
169         u32 wait_for_event;
170         u32 signal_event;
171         u32 close_event;
172         u32 check_event;
173         u32 install_protocol_interface;
174         u32 reinstall_protocol_interface;
175         u32 uninstall_protocol_interface;
176         u32 handle_protocol;
177         u32 __reserved;
178         u32 register_protocol_notify;
179         u32 locate_handle;
180         u32 locate_device_path;
181         u32 install_configuration_table;
182         u32 load_image;
183         u32 start_image;
184         u32 exit;
185         u32 unload_image;
186         u32 exit_boot_services;
187         u32 get_next_monotonic_count;
188         u32 stall;
189         u32 set_watchdog_timer;
190         u32 connect_controller;
191         u32 disconnect_controller;
192         u32 open_protocol;
193         u32 close_protocol;
194         u32 open_protocol_information;
195         u32 protocols_per_handle;
196         u32 locate_handle_buffer;
197         u32 locate_protocol;
198         u32 install_multiple_protocol_interfaces;
199         u32 uninstall_multiple_protocol_interfaces;
200         u32 calculate_crc32;
201         u32 copy_mem;
202         u32 set_mem;
203         u32 create_event_ex;
204 } __packed efi_boot_services_32_t;
205
206 typedef struct {
207         efi_table_hdr_t hdr;
208         u64 raise_tpl;
209         u64 restore_tpl;
210         u64 allocate_pages;
211         u64 free_pages;
212         u64 get_memory_map;
213         u64 allocate_pool;
214         u64 free_pool;
215         u64 create_event;
216         u64 set_timer;
217         u64 wait_for_event;
218         u64 signal_event;
219         u64 close_event;
220         u64 check_event;
221         u64 install_protocol_interface;
222         u64 reinstall_protocol_interface;
223         u64 uninstall_protocol_interface;
224         u64 handle_protocol;
225         u64 __reserved;
226         u64 register_protocol_notify;
227         u64 locate_handle;
228         u64 locate_device_path;
229         u64 install_configuration_table;
230         u64 load_image;
231         u64 start_image;
232         u64 exit;
233         u64 unload_image;
234         u64 exit_boot_services;
235         u64 get_next_monotonic_count;
236         u64 stall;
237         u64 set_watchdog_timer;
238         u64 connect_controller;
239         u64 disconnect_controller;
240         u64 open_protocol;
241         u64 close_protocol;
242         u64 open_protocol_information;
243         u64 protocols_per_handle;
244         u64 locate_handle_buffer;
245         u64 locate_protocol;
246         u64 install_multiple_protocol_interfaces;
247         u64 uninstall_multiple_protocol_interfaces;
248         u64 calculate_crc32;
249         u64 copy_mem;
250         u64 set_mem;
251         u64 create_event_ex;
252 } __packed efi_boot_services_64_t;
253
254 /*
255  * EFI Boot Services table
256  */
257 typedef struct {
258         efi_table_hdr_t hdr;
259         void *raise_tpl;
260         void *restore_tpl;
261         efi_status_t (*allocate_pages)(int, int, unsigned long,
262                                        efi_physical_addr_t *);
263         efi_status_t (*free_pages)(efi_physical_addr_t, unsigned long);
264         efi_status_t (*get_memory_map)(unsigned long *, void *, unsigned long *,
265                                        unsigned long *, u32 *);
266         efi_status_t (*allocate_pool)(int, unsigned long, void **);
267         efi_status_t (*free_pool)(void *);
268         void *create_event;
269         void *set_timer;
270         void *wait_for_event;
271         void *signal_event;
272         void *close_event;
273         void *check_event;
274         void *install_protocol_interface;
275         void *reinstall_protocol_interface;
276         void *uninstall_protocol_interface;
277         efi_status_t (*handle_protocol)(efi_handle_t, efi_guid_t *, void **);
278         void *__reserved;
279         void *register_protocol_notify;
280         void *locate_handle;
281         void *locate_device_path;
282         void *install_configuration_table;
283         void *load_image;
284         void *start_image;
285         void *exit;
286         void *unload_image;
287         efi_status_t (*exit_boot_services)(efi_handle_t, unsigned long);
288         void *get_next_monotonic_count;
289         void *stall;
290         void *set_watchdog_timer;
291         void *connect_controller;
292         void *disconnect_controller;
293         void *open_protocol;
294         void *close_protocol;
295         void *open_protocol_information;
296         void *protocols_per_handle;
297         void *locate_handle_buffer;
298         void *locate_protocol;
299         void *install_multiple_protocol_interfaces;
300         void *uninstall_multiple_protocol_interfaces;
301         void *calculate_crc32;
302         void *copy_mem;
303         void *set_mem;
304         void *create_event_ex;
305 } efi_boot_services_t;
306
307 typedef enum {
308         EfiPciIoWidthUint8,
309         EfiPciIoWidthUint16,
310         EfiPciIoWidthUint32,
311         EfiPciIoWidthUint64,
312         EfiPciIoWidthFifoUint8,
313         EfiPciIoWidthFifoUint16,
314         EfiPciIoWidthFifoUint32,
315         EfiPciIoWidthFifoUint64,
316         EfiPciIoWidthFillUint8,
317         EfiPciIoWidthFillUint16,
318         EfiPciIoWidthFillUint32,
319         EfiPciIoWidthFillUint64,
320         EfiPciIoWidthMaximum
321 } EFI_PCI_IO_PROTOCOL_WIDTH;
322
323 typedef enum {
324         EfiPciIoAttributeOperationGet,
325         EfiPciIoAttributeOperationSet,
326         EfiPciIoAttributeOperationEnable,
327         EfiPciIoAttributeOperationDisable,
328         EfiPciIoAttributeOperationSupported,
329     EfiPciIoAttributeOperationMaximum
330 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION;
331
332 typedef struct {
333         u32 read;
334         u32 write;
335 } efi_pci_io_protocol_access_32_t;
336
337 typedef struct {
338         u64 read;
339         u64 write;
340 } efi_pci_io_protocol_access_64_t;
341
342 typedef struct {
343         void *read;
344         void *write;
345 } efi_pci_io_protocol_access_t;
346
347 typedef struct {
348         u32 poll_mem;
349         u32 poll_io;
350         efi_pci_io_protocol_access_32_t mem;
351         efi_pci_io_protocol_access_32_t io;
352         efi_pci_io_protocol_access_32_t pci;
353         u32 copy_mem;
354         u32 map;
355         u32 unmap;
356         u32 allocate_buffer;
357         u32 free_buffer;
358         u32 flush;
359         u32 get_location;
360         u32 attributes;
361         u32 get_bar_attributes;
362         u32 set_bar_attributes;
363         uint64_t romsize;
364         void *romimage;
365 } efi_pci_io_protocol_32;
366
367 typedef struct {
368         u64 poll_mem;
369         u64 poll_io;
370         efi_pci_io_protocol_access_64_t mem;
371         efi_pci_io_protocol_access_64_t io;
372         efi_pci_io_protocol_access_64_t pci;
373         u64 copy_mem;
374         u64 map;
375         u64 unmap;
376         u64 allocate_buffer;
377         u64 free_buffer;
378         u64 flush;
379         u64 get_location;
380         u64 attributes;
381         u64 get_bar_attributes;
382         u64 set_bar_attributes;
383         uint64_t romsize;
384         void *romimage;
385 } efi_pci_io_protocol_64;
386
387 typedef struct {
388         void *poll_mem;
389         void *poll_io;
390         efi_pci_io_protocol_access_t mem;
391         efi_pci_io_protocol_access_t io;
392         efi_pci_io_protocol_access_t pci;
393         void *copy_mem;
394         void *map;
395         void *unmap;
396         void *allocate_buffer;
397         void *free_buffer;
398         void *flush;
399         void *get_location;
400         void *attributes;
401         void *get_bar_attributes;
402         void *set_bar_attributes;
403         uint64_t romsize;
404         void *romimage;
405 } efi_pci_io_protocol;
406
407 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001
408 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002
409 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004
410 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008
411 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010
412 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020
413 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040
414 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080
415 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100
416 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200
417 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400
418 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800
419 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000
420 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000
421 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000
422 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000
423 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000
424 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000
425 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000
426
427 /*
428  * Types and defines for EFI ResetSystem
429  */
430 #define EFI_RESET_COLD 0
431 #define EFI_RESET_WARM 1
432 #define EFI_RESET_SHUTDOWN 2
433
434 /*
435  * EFI Runtime Services table
436  */
437 #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL)
438 #define EFI_RUNTIME_SERVICES_REVISION  0x00010000
439
440 typedef struct {
441         efi_table_hdr_t hdr;
442         u32 get_time;
443         u32 set_time;
444         u32 get_wakeup_time;
445         u32 set_wakeup_time;
446         u32 set_virtual_address_map;
447         u32 convert_pointer;
448         u32 get_variable;
449         u32 get_next_variable;
450         u32 set_variable;
451         u32 get_next_high_mono_count;
452         u32 reset_system;
453         u32 update_capsule;
454         u32 query_capsule_caps;
455         u32 query_variable_info;
456 } efi_runtime_services_32_t;
457
458 typedef struct {
459         efi_table_hdr_t hdr;
460         u64 get_time;
461         u64 set_time;
462         u64 get_wakeup_time;
463         u64 set_wakeup_time;
464         u64 set_virtual_address_map;
465         u64 convert_pointer;
466         u64 get_variable;
467         u64 get_next_variable;
468         u64 set_variable;
469         u64 get_next_high_mono_count;
470         u64 reset_system;
471         u64 update_capsule;
472         u64 query_capsule_caps;
473         u64 query_variable_info;
474 } efi_runtime_services_64_t;
475
476 typedef struct {
477         efi_table_hdr_t hdr;
478         void *get_time;
479         void *set_time;
480         void *get_wakeup_time;
481         void *set_wakeup_time;
482         void *set_virtual_address_map;
483         void *convert_pointer;
484         void *get_variable;
485         void *get_next_variable;
486         void *set_variable;
487         void *get_next_high_mono_count;
488         void *reset_system;
489         void *update_capsule;
490         void *query_capsule_caps;
491         void *query_variable_info;
492 } efi_runtime_services_t;
493
494 typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc);
495 typedef efi_status_t efi_set_time_t (efi_time_t *tm);
496 typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending,
497                                             efi_time_t *tm);
498 typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm);
499 typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr,
500                                          unsigned long *data_size, void *data);
501 typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name,
502                                               efi_guid_t *vendor);
503 typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor, 
504                                          u32 attr, unsigned long data_size,
505                                          void *data);
506 typedef efi_status_t
507 efi_set_variable_nonblocking_t(efi_char16_t *name, efi_guid_t *vendor,
508                                u32 attr, unsigned long data_size, void *data);
509
510 typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count);
511 typedef void efi_reset_system_t (int reset_type, efi_status_t status,
512                                  unsigned long data_size, efi_char16_t *data);
513 typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size,
514                                                 unsigned long descriptor_size,
515                                                 u32 descriptor_version,
516                                                 efi_memory_desc_t *virtual_map);
517 typedef efi_status_t efi_query_variable_info_t(u32 attr,
518                                                u64 *storage_space,
519                                                u64 *remaining_space,
520                                                u64 *max_variable_size);
521 typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules,
522                                           unsigned long count,
523                                           unsigned long sg_list);
524 typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules,
525                                               unsigned long count,
526                                               u64 *max_size,
527                                               int *reset_type);
528 typedef efi_status_t efi_query_variable_store_t(u32 attributes, unsigned long size);
529
530 void efi_native_runtime_setup(void);
531
532 /*
533  *  EFI Configuration Table and GUID definitions
534  */
535 #define NULL_GUID \
536     EFI_GUID(  0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 )
537
538 #define MPS_TABLE_GUID    \
539     EFI_GUID(  0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
540
541 #define ACPI_TABLE_GUID    \
542     EFI_GUID(  0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
543
544 #define ACPI_20_TABLE_GUID    \
545     EFI_GUID(  0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 )
546
547 #define SMBIOS_TABLE_GUID    \
548     EFI_GUID(  0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
549
550 #define SMBIOS3_TABLE_GUID    \
551     EFI_GUID(  0xf2fd1544, 0x9794, 0x4a2c, 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94 )
552
553 #define SAL_SYSTEM_TABLE_GUID    \
554     EFI_GUID(  0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
555
556 #define HCDP_TABLE_GUID \
557     EFI_GUID(  0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98 )
558
559 #define UGA_IO_PROTOCOL_GUID \
560     EFI_GUID(  0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0xb, 0x7, 0xa2 )
561
562 #define EFI_GLOBAL_VARIABLE_GUID \
563     EFI_GUID(  0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c )
564
565 #define UV_SYSTEM_TABLE_GUID \
566     EFI_GUID(  0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93 )
567
568 #define LINUX_EFI_CRASH_GUID \
569     EFI_GUID(  0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0 )
570
571 #define LOADED_IMAGE_PROTOCOL_GUID \
572     EFI_GUID(  0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
573
574 #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \
575     EFI_GUID(  0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a )
576
577 #define EFI_UGA_PROTOCOL_GUID \
578     EFI_GUID(  0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39 )
579
580 #define EFI_PCI_IO_PROTOCOL_GUID \
581     EFI_GUID(  0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x2, 0x9a )
582
583 #define EFI_FILE_INFO_ID \
584     EFI_GUID(  0x9576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
585
586 #define EFI_FILE_SYSTEM_GUID \
587     EFI_GUID(  0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
588
589 #define DEVICE_TREE_GUID \
590     EFI_GUID(  0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0 )
591
592 typedef struct {
593         efi_guid_t guid;
594         u64 table;
595 } efi_config_table_64_t;
596
597 typedef struct {
598         efi_guid_t guid;
599         u32 table;
600 } efi_config_table_32_t;
601
602 typedef struct {
603         efi_guid_t guid;
604         unsigned long table;
605 } efi_config_table_t;
606
607 typedef struct {
608         efi_guid_t guid;
609         const char *name;
610         unsigned long *ptr;
611 } efi_config_table_type_t;
612
613 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
614
615 #define EFI_2_30_SYSTEM_TABLE_REVISION  ((2 << 16) | (30))
616 #define EFI_2_20_SYSTEM_TABLE_REVISION  ((2 << 16) | (20))
617 #define EFI_2_10_SYSTEM_TABLE_REVISION  ((2 << 16) | (10))
618 #define EFI_2_00_SYSTEM_TABLE_REVISION  ((2 << 16) | (00))
619 #define EFI_1_10_SYSTEM_TABLE_REVISION  ((1 << 16) | (10))
620 #define EFI_1_02_SYSTEM_TABLE_REVISION  ((1 << 16) | (02))
621
622 typedef struct {
623         efi_table_hdr_t hdr;
624         u64 fw_vendor;  /* physical addr of CHAR16 vendor string */
625         u32 fw_revision;
626         u32 __pad1;
627         u64 con_in_handle;
628         u64 con_in;
629         u64 con_out_handle;
630         u64 con_out;
631         u64 stderr_handle;
632         u64 stderr;
633         u64 runtime;
634         u64 boottime;
635         u32 nr_tables;
636         u32 __pad2;
637         u64 tables;
638 } efi_system_table_64_t;
639
640 typedef struct {
641         efi_table_hdr_t hdr;
642         u32 fw_vendor;  /* physical addr of CHAR16 vendor string */
643         u32 fw_revision;
644         u32 con_in_handle;
645         u32 con_in;
646         u32 con_out_handle;
647         u32 con_out;
648         u32 stderr_handle;
649         u32 stderr;
650         u32 runtime;
651         u32 boottime;
652         u32 nr_tables;
653         u32 tables;
654 } efi_system_table_32_t;
655
656 typedef struct {
657         efi_table_hdr_t hdr;
658         unsigned long fw_vendor;        /* physical addr of CHAR16 vendor string */
659         u32 fw_revision;
660         unsigned long con_in_handle;
661         unsigned long con_in;
662         unsigned long con_out_handle;
663         unsigned long con_out;
664         unsigned long stderr_handle;
665         unsigned long stderr;
666         efi_runtime_services_t *runtime;
667         efi_boot_services_t *boottime;
668         unsigned long nr_tables;
669         unsigned long tables;
670 } efi_system_table_t;
671
672 struct efi_memory_map {
673         void *phys_map;
674         void *map;
675         void *map_end;
676         int nr_map;
677         unsigned long desc_version;
678         unsigned long desc_size;
679 };
680
681 struct efi_fdt_params {
682         u64 system_table;
683         u64 mmap;
684         u32 mmap_size;
685         u32 desc_size;
686         u32 desc_ver;
687 };
688
689 typedef struct {
690         u32 revision;
691         u32 parent_handle;
692         u32 system_table;
693         u32 device_handle;
694         u32 file_path;
695         u32 reserved;
696         u32 load_options_size;
697         u32 load_options;
698         u32 image_base;
699         __aligned_u64 image_size;
700         unsigned int image_code_type;
701         unsigned int image_data_type;
702         unsigned long unload;
703 } efi_loaded_image_32_t;
704
705 typedef struct {
706         u32 revision;
707         u64 parent_handle;
708         u64 system_table;
709         u64 device_handle;
710         u64 file_path;
711         u64 reserved;
712         u32 load_options_size;
713         u64 load_options;
714         u64 image_base;
715         __aligned_u64 image_size;
716         unsigned int image_code_type;
717         unsigned int image_data_type;
718         unsigned long unload;
719 } efi_loaded_image_64_t;
720
721 typedef struct {
722         u32 revision;
723         void *parent_handle;
724         efi_system_table_t *system_table;
725         void *device_handle;
726         void *file_path;
727         void *reserved;
728         u32 load_options_size;
729         void *load_options;
730         void *image_base;
731         __aligned_u64 image_size;
732         unsigned int image_code_type;
733         unsigned int image_data_type;
734         unsigned long unload;
735 } efi_loaded_image_t;
736
737
738 typedef struct {
739         u64 size;
740         u64 file_size;
741         u64 phys_size;
742         efi_time_t create_time;
743         efi_time_t last_access_time;
744         efi_time_t modification_time;
745         __aligned_u64 attribute;
746         efi_char16_t filename[1];
747 } efi_file_info_t;
748
749 typedef struct {
750         u64 revision;
751         u32 open;
752         u32 close;
753         u32 delete;
754         u32 read;
755         u32 write;
756         u32 get_position;
757         u32 set_position;
758         u32 get_info;
759         u32 set_info;
760         u32 flush;
761 } efi_file_handle_32_t;
762
763 typedef struct {
764         u64 revision;
765         u64 open;
766         u64 close;
767         u64 delete;
768         u64 read;
769         u64 write;
770         u64 get_position;
771         u64 set_position;
772         u64 get_info;
773         u64 set_info;
774         u64 flush;
775 } efi_file_handle_64_t;
776
777 typedef struct _efi_file_handle {
778         u64 revision;
779         efi_status_t (*open)(struct _efi_file_handle *,
780                              struct _efi_file_handle **,
781                              efi_char16_t *, u64, u64);
782         efi_status_t (*close)(struct _efi_file_handle *);
783         void *delete;
784         efi_status_t (*read)(struct _efi_file_handle *, unsigned long *,
785                              void *);
786         void *write;
787         void *get_position;
788         void *set_position;
789         efi_status_t (*get_info)(struct _efi_file_handle *, efi_guid_t *,
790                         unsigned long *, void *);
791         void *set_info;
792         void *flush;
793 } efi_file_handle_t;
794
795 typedef struct _efi_file_io_interface {
796         u64 revision;
797         int (*open_volume)(struct _efi_file_io_interface *,
798                            efi_file_handle_t **);
799 } efi_file_io_interface_t;
800
801 #define EFI_FILE_MODE_READ      0x0000000000000001
802 #define EFI_FILE_MODE_WRITE     0x0000000000000002
803 #define EFI_FILE_MODE_CREATE    0x8000000000000000
804
805 #define EFI_INVALID_TABLE_ADDR          (~0UL)
806
807 /*
808  * All runtime access to EFI goes through this structure:
809  */
810 extern struct efi {
811         efi_system_table_t *systab;     /* EFI system table */
812         unsigned int runtime_version;   /* Runtime services version */
813         unsigned long mps;              /* MPS table */
814         unsigned long acpi;             /* ACPI table  (IA64 ext 0.71) */
815         unsigned long acpi20;           /* ACPI table  (ACPI 2.0) */
816         unsigned long smbios;           /* SMBIOS table (32 bit entry point) */
817         unsigned long smbios3;          /* SMBIOS table (64 bit entry point) */
818         unsigned long sal_systab;       /* SAL system table */
819         unsigned long boot_info;        /* boot info table */
820         unsigned long hcdp;             /* HCDP table */
821         unsigned long uga;              /* UGA table */
822         unsigned long uv_systab;        /* UV system table */
823         unsigned long fw_vendor;        /* fw_vendor */
824         unsigned long runtime;          /* runtime table */
825         unsigned long config_table;     /* config tables */
826         efi_get_time_t *get_time;
827         efi_set_time_t *set_time;
828         efi_get_wakeup_time_t *get_wakeup_time;
829         efi_set_wakeup_time_t *set_wakeup_time;
830         efi_get_variable_t *get_variable;
831         efi_get_next_variable_t *get_next_variable;
832         efi_set_variable_t *set_variable;
833         efi_set_variable_nonblocking_t *set_variable_nonblocking;
834         efi_query_variable_info_t *query_variable_info;
835         efi_update_capsule_t *update_capsule;
836         efi_query_capsule_caps_t *query_capsule_caps;
837         efi_get_next_high_mono_count_t *get_next_high_mono_count;
838         efi_reset_system_t *reset_system;
839         efi_set_virtual_address_map_t *set_virtual_address_map;
840         struct efi_memory_map *memmap;
841         unsigned long flags;
842 } efi;
843
844 static inline int
845 efi_guidcmp (efi_guid_t left, efi_guid_t right)
846 {
847         return memcmp(&left, &right, sizeof (efi_guid_t));
848 }
849
850 static inline char *
851 efi_guid_to_str(efi_guid_t *guid, char *out)
852 {
853         sprintf(out, "%pUl", guid->b);
854         return out;
855 }
856
857 extern void efi_init (void);
858 extern void *efi_get_pal_addr (void);
859 extern void efi_map_pal_code (void);
860 extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg);
861 extern void efi_gettimeofday (struct timespec *ts);
862 extern void efi_enter_virtual_mode (void);      /* switch EFI to virtual mode, if possible */
863 #ifdef CONFIG_X86
864 extern void efi_late_init(void);
865 extern void efi_free_boot_services(void);
866 extern efi_status_t efi_query_variable_store(u32 attributes, unsigned long size);
867 #else
868 static inline void efi_late_init(void) {}
869 static inline void efi_free_boot_services(void) {}
870
871 static inline efi_status_t efi_query_variable_store(u32 attributes, unsigned long size)
872 {
873         return EFI_SUCCESS;
874 }
875 #endif
876 extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr);
877 extern int efi_config_init(efi_config_table_type_t *arch_tables);
878 extern u64 efi_get_iobase (void);
879 extern u32 efi_mem_type (unsigned long phys_addr);
880 extern u64 efi_mem_attributes (unsigned long phys_addr);
881 extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size);
882 extern int __init efi_uart_console_only (void);
883 extern void efi_initialize_iomem_resources(struct resource *code_resource,
884                 struct resource *data_resource, struct resource *bss_resource);
885 extern void efi_get_time(struct timespec *now);
886 extern void efi_reserve_boot_services(void);
887 extern int efi_get_fdt_params(struct efi_fdt_params *params, int verbose);
888 extern struct efi_memory_map memmap;
889
890 extern int efi_reboot_quirk_mode;
891 extern bool efi_poweroff_required(void);
892
893 /* Iterate through an efi_memory_map */
894 #define for_each_efi_memory_desc(m, md)                                    \
895         for ((md) = (m)->map;                                              \
896              (md) <= (efi_memory_desc_t *)((m)->map_end - (m)->desc_size); \
897              (md) = (void *)(md) + (m)->desc_size)
898
899 /*
900  * Format an EFI memory descriptor's type and attributes to a user-provided
901  * character buffer, as per snprintf(), and return the buffer.
902  */
903 char * __init efi_md_typeattr_format(char *buf, size_t size,
904                                      const efi_memory_desc_t *md);
905
906 /**
907  * efi_range_is_wc - check the WC bit on an address range
908  * @start: starting kvirt address
909  * @len: length of range
910  *
911  * Consult the EFI memory map and make sure it's ok to set this range WC.
912  * Returns true or false.
913  */
914 static inline int efi_range_is_wc(unsigned long start, unsigned long len)
915 {
916         unsigned long i;
917
918         for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) {
919                 unsigned long paddr = __pa(start + i);
920                 if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC))
921                         return 0;
922         }
923         /* The range checked out */
924         return 1;
925 }
926
927 #ifdef CONFIG_EFI_PCDP
928 extern int __init efi_setup_pcdp_console(char *);
929 #endif
930
931 /*
932  * We play games with efi_enabled so that the compiler will, if
933  * possible, remove EFI-related code altogether.
934  */
935 #define EFI_BOOT                0       /* Were we booted from EFI? */
936 #define EFI_SYSTEM_TABLES       1       /* Can we use EFI system tables? */
937 #define EFI_CONFIG_TABLES       2       /* Can we use EFI config tables? */
938 #define EFI_RUNTIME_SERVICES    3       /* Can we use runtime services? */
939 #define EFI_MEMMAP              4       /* Can we use EFI memory map? */
940 #define EFI_64BIT               5       /* Is the firmware 64-bit? */
941 #define EFI_PARAVIRT            6       /* Access is via a paravirt interface */
942 #define EFI_ARCH_1              7       /* First arch-specific bit */
943
944 #ifdef CONFIG_EFI
945 /*
946  * Test whether the above EFI_* bits are enabled.
947  */
948 static inline bool efi_enabled(int feature)
949 {
950         return test_bit(feature, &efi.flags) != 0;
951 }
952 extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused);
953 #else
954 static inline bool efi_enabled(int feature)
955 {
956         return false;
957 }
958 static inline void
959 efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {}
960 #endif
961
962 /*
963  * Variable Attributes
964  */
965 #define EFI_VARIABLE_NON_VOLATILE       0x0000000000000001
966 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
967 #define EFI_VARIABLE_RUNTIME_ACCESS     0x0000000000000004
968 #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008
969 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010
970 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
971 #define EFI_VARIABLE_APPEND_WRITE       0x0000000000000040
972
973 #define EFI_VARIABLE_MASK       (EFI_VARIABLE_NON_VOLATILE | \
974                                 EFI_VARIABLE_BOOTSERVICE_ACCESS | \
975                                 EFI_VARIABLE_RUNTIME_ACCESS | \
976                                 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \
977                                 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \
978                                 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \
979                                 EFI_VARIABLE_APPEND_WRITE)
980 /*
981  * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee"))
982  * not including trailing NUL
983  */
984 #define EFI_VARIABLE_GUID_LEN 36
985
986 /*
987  * The type of search to perform when calling boottime->locate_handle
988  */
989 #define EFI_LOCATE_ALL_HANDLES                  0
990 #define EFI_LOCATE_BY_REGISTER_NOTIFY           1
991 #define EFI_LOCATE_BY_PROTOCOL                  2
992
993 /*
994  * EFI Device Path information
995  */
996 #define EFI_DEV_HW                      0x01
997 #define  EFI_DEV_PCI                             1
998 #define  EFI_DEV_PCCARD                          2
999 #define  EFI_DEV_MEM_MAPPED                      3
1000 #define  EFI_DEV_VENDOR                          4
1001 #define  EFI_DEV_CONTROLLER                      5
1002 #define EFI_DEV_ACPI                    0x02
1003 #define   EFI_DEV_BASIC_ACPI                     1
1004 #define   EFI_DEV_EXPANDED_ACPI                  2
1005 #define EFI_DEV_MSG                     0x03
1006 #define   EFI_DEV_MSG_ATAPI                      1
1007 #define   EFI_DEV_MSG_SCSI                       2
1008 #define   EFI_DEV_MSG_FC                         3
1009 #define   EFI_DEV_MSG_1394                       4
1010 #define   EFI_DEV_MSG_USB                        5
1011 #define   EFI_DEV_MSG_USB_CLASS                 15
1012 #define   EFI_DEV_MSG_I20                        6
1013 #define   EFI_DEV_MSG_MAC                       11
1014 #define   EFI_DEV_MSG_IPV4                      12
1015 #define   EFI_DEV_MSG_IPV6                      13
1016 #define   EFI_DEV_MSG_INFINIBAND                 9
1017 #define   EFI_DEV_MSG_UART                      14
1018 #define   EFI_DEV_MSG_VENDOR                    10
1019 #define EFI_DEV_MEDIA                   0x04
1020 #define   EFI_DEV_MEDIA_HARD_DRIVE               1
1021 #define   EFI_DEV_MEDIA_CDROM                    2
1022 #define   EFI_DEV_MEDIA_VENDOR                   3
1023 #define   EFI_DEV_MEDIA_FILE                     4
1024 #define   EFI_DEV_MEDIA_PROTOCOL                 5
1025 #define EFI_DEV_BIOS_BOOT               0x05
1026 #define EFI_DEV_END_PATH                0x7F
1027 #define EFI_DEV_END_PATH2               0xFF
1028 #define   EFI_DEV_END_INSTANCE                  0x01
1029 #define   EFI_DEV_END_ENTIRE                    0xFF
1030
1031 struct efi_generic_dev_path {
1032         u8 type;
1033         u8 sub_type;
1034         u16 length;
1035 } __attribute ((packed));
1036
1037 static inline void memrange_efi_to_native(u64 *addr, u64 *npages)
1038 {
1039         *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr);
1040         *addr &= PAGE_MASK;
1041 }
1042
1043 /*
1044  * EFI Variable support.
1045  *
1046  * Different firmware drivers can expose their EFI-like variables using
1047  * the following.
1048  */
1049
1050 struct efivar_operations {
1051         efi_get_variable_t *get_variable;
1052         efi_get_next_variable_t *get_next_variable;
1053         efi_set_variable_t *set_variable;
1054         efi_set_variable_nonblocking_t *set_variable_nonblocking;
1055         efi_query_variable_store_t *query_variable_store;
1056 };
1057
1058 struct efivars {
1059         /*
1060          * ->lock protects two things:
1061          * 1) efivarfs_list and efivars_sysfs_list
1062          * 2) ->ops calls
1063          */
1064         spinlock_t lock;
1065         struct kset *kset;
1066         struct kobject *kobject;
1067         const struct efivar_operations *ops;
1068 };
1069
1070 /*
1071  * The maximum size of VariableName + Data = 1024
1072  * Therefore, it's reasonable to save that much
1073  * space in each part of the structure,
1074  * and we use a page for reading/writing.
1075  */
1076
1077 #define EFI_VAR_NAME_LEN        1024
1078
1079 struct efi_variable {
1080         efi_char16_t  VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)];
1081         efi_guid_t    VendorGuid;
1082         unsigned long DataSize;
1083         __u8          Data[1024];
1084         efi_status_t  Status;
1085         __u32         Attributes;
1086 } __attribute__((packed));
1087
1088 struct efivar_entry {
1089         struct efi_variable var;
1090         struct list_head list;
1091         struct kobject kobj;
1092         bool scanning;
1093         bool deleting;
1094 };
1095
1096 struct efi_simple_text_output_protocol_32 {
1097         u32 reset;
1098         u32 output_string;
1099         u32 test_string;
1100 };
1101
1102 struct efi_simple_text_output_protocol_64 {
1103         u64 reset;
1104         u64 output_string;
1105         u64 test_string;
1106 };
1107
1108 struct efi_simple_text_output_protocol {
1109         void *reset;
1110         efi_status_t (*output_string)(void *, void *);
1111         void *test_string;
1112 };
1113
1114 extern struct list_head efivar_sysfs_list;
1115
1116 static inline void
1117 efivar_unregister(struct efivar_entry *var)
1118 {
1119         kobject_put(&var->kobj);
1120 }
1121
1122 int efivars_register(struct efivars *efivars,
1123                      const struct efivar_operations *ops,
1124                      struct kobject *kobject);
1125 int efivars_unregister(struct efivars *efivars);
1126 struct kobject *efivars_kobject(void);
1127
1128 int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *),
1129                 void *data, bool atomic, bool duplicates,
1130                 struct list_head *head);
1131
1132 void efivar_entry_add(struct efivar_entry *entry, struct list_head *head);
1133 void efivar_entry_remove(struct efivar_entry *entry);
1134
1135 int __efivar_entry_delete(struct efivar_entry *entry);
1136 int efivar_entry_delete(struct efivar_entry *entry);
1137
1138 int efivar_entry_size(struct efivar_entry *entry, unsigned long *size);
1139 int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
1140                        unsigned long *size, void *data);
1141 int efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
1142                      unsigned long *size, void *data);
1143 int efivar_entry_set(struct efivar_entry *entry, u32 attributes,
1144                      unsigned long size, void *data, struct list_head *head);
1145 int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes,
1146                               unsigned long *size, void *data, bool *set);
1147 int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes,
1148                           bool block, unsigned long size, void *data);
1149
1150 void efivar_entry_iter_begin(void);
1151 void efivar_entry_iter_end(void);
1152
1153 int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
1154                         struct list_head *head, void *data,
1155                         struct efivar_entry **prev);
1156 int efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
1157                       struct list_head *head, void *data);
1158
1159 struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid,
1160                                        struct list_head *head, bool remove);
1161
1162 bool efivar_validate(efi_char16_t *var_name, u8 *data, unsigned long len);
1163
1164 extern struct work_struct efivar_work;
1165 void efivar_run_worker(void);
1166
1167 #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE)
1168 int efivars_sysfs_init(void);
1169
1170 #define EFIVARS_DATA_SIZE_MAX 1024
1171
1172 #endif /* CONFIG_EFI_VARS */
1173
1174 #ifdef CONFIG_EFI_RUNTIME_MAP
1175 int efi_runtime_map_init(struct kobject *);
1176 void efi_runtime_map_setup(void *, int, u32);
1177 int efi_get_runtime_map_size(void);
1178 int efi_get_runtime_map_desc_size(void);
1179 int efi_runtime_map_copy(void *buf, size_t bufsz);
1180 #else
1181 static inline int efi_runtime_map_init(struct kobject *kobj)
1182 {
1183         return 0;
1184 }
1185
1186 static inline void
1187 efi_runtime_map_setup(void *map, int nr_entries, u32 desc_size) {}
1188
1189 static inline int efi_get_runtime_map_size(void)
1190 {
1191         return 0;
1192 }
1193
1194 static inline int efi_get_runtime_map_desc_size(void)
1195 {
1196         return 0;
1197 }
1198
1199 static inline int efi_runtime_map_copy(void *buf, size_t bufsz)
1200 {
1201         return 0;
1202 }
1203
1204 #endif
1205
1206 /* prototypes shared between arch specific and generic stub code */
1207
1208 #define pr_efi(sys_table, msg)     efi_printk(sys_table, "EFI stub: "msg)
1209 #define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg)
1210
1211 void efi_printk(efi_system_table_t *sys_table_arg, char *str);
1212
1213 void efi_free(efi_system_table_t *sys_table_arg, unsigned long size,
1214               unsigned long addr);
1215
1216 char *efi_convert_cmdline(efi_system_table_t *sys_table_arg,
1217                           efi_loaded_image_t *image, int *cmd_line_len);
1218
1219 efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg,
1220                                 efi_memory_desc_t **map,
1221                                 unsigned long *map_size,
1222                                 unsigned long *desc_size,
1223                                 u32 *desc_ver,
1224                                 unsigned long *key_ptr);
1225
1226 efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg,
1227                            unsigned long size, unsigned long align,
1228                            unsigned long *addr);
1229
1230 efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg,
1231                             unsigned long size, unsigned long align,
1232                             unsigned long *addr, unsigned long max);
1233
1234 efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg,
1235                                  unsigned long *image_addr,
1236                                  unsigned long image_size,
1237                                  unsigned long alloc_size,
1238                                  unsigned long preferred_addr,
1239                                  unsigned long alignment);
1240
1241 efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg,
1242                                   efi_loaded_image_t *image,
1243                                   char *cmd_line, char *option_string,
1244                                   unsigned long max_addr,
1245                                   unsigned long *load_addr,
1246                                   unsigned long *load_size);
1247
1248 efi_status_t efi_parse_options(char *cmdline);
1249
1250 bool efi_runtime_disabled(void);
1251 #endif /* _LINUX_EFI_H */