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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 | |
24 | #include <asm/page.h> |
25 | |
26 | #define EFI_SUCCESS 0 |
27 | #define EFI_LOAD_ERROR ( 1 | (1UL << (BITS_PER_LONG-1))) |
28 | #define EFI_INVALID_PARAMETER ( 2 | (1UL << (BITS_PER_LONG-1))) |
29 | #define EFI_UNSUPPORTED ( 3 | (1UL << (BITS_PER_LONG-1))) |
30 | #define EFI_BAD_BUFFER_SIZE ( 4 | (1UL << (BITS_PER_LONG-1))) |
31 | #define EFI_BUFFER_TOO_SMALL ( 5 | (1UL << (BITS_PER_LONG-1))) |
32 | #define EFI_NOT_READY ( 6 | (1UL << (BITS_PER_LONG-1))) |
33 | #define EFI_DEVICE_ERROR ( 7 | (1UL << (BITS_PER_LONG-1))) |
34 | #define EFI_WRITE_PROTECTED ( 8 | (1UL << (BITS_PER_LONG-1))) |
35 | #define EFI_OUT_OF_RESOURCES ( 9 | (1UL << (BITS_PER_LONG-1))) |
36 | #define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG-1))) |
37 | #define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1))) |
38 | |
39 | typedef unsigned long efi_status_t; |
40 | typedef u8 efi_bool_t; |
41 | typedef u16 efi_char16_t; /* UNICODE character */ |
42 | |
43 | |
44 | typedef struct { |
45 | u8 b[16]; |
46 | } efi_guid_t; |
47 | |
48 | #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \ |
49 | ((efi_guid_t) \ |
50 | {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \ |
51 | (b) & 0xff, ((b) >> 8) & 0xff, \ |
52 | (c) & 0xff, ((c) >> 8) & 0xff, \ |
53 | (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }}) |
54 | |
55 | /* |
56 | * Generic EFI table header |
57 | */ |
58 | typedef struct { |
59 | u64 signature; |
60 | u32 revision; |
61 | u32 headersize; |
62 | u32 crc32; |
63 | u32 reserved; |
64 | } efi_table_hdr_t; |
65 | |
66 | /* |
67 | * Memory map descriptor: |
68 | */ |
69 | |
70 | /* Memory types: */ |
71 | #define EFI_RESERVED_TYPE 0 |
72 | #define EFI_LOADER_CODE 1 |
73 | #define EFI_LOADER_DATA 2 |
74 | #define EFI_BOOT_SERVICES_CODE 3 |
75 | #define EFI_BOOT_SERVICES_DATA 4 |
76 | #define EFI_RUNTIME_SERVICES_CODE 5 |
77 | #define EFI_RUNTIME_SERVICES_DATA 6 |
78 | #define EFI_CONVENTIONAL_MEMORY 7 |
79 | #define EFI_UNUSABLE_MEMORY 8 |
80 | #define EFI_ACPI_RECLAIM_MEMORY 9 |
81 | #define EFI_ACPI_MEMORY_NVS 10 |
82 | #define EFI_MEMORY_MAPPED_IO 11 |
83 | #define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12 |
84 | #define EFI_PAL_CODE 13 |
85 | #define EFI_MAX_MEMORY_TYPE 14 |
86 | |
87 | /* Attribute values: */ |
88 | #define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */ |
89 | #define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */ |
90 | #define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */ |
91 | #define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */ |
92 | #define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */ |
93 | #define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */ |
94 | #define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */ |
95 | #define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */ |
96 | #define EFI_MEMORY_DESCRIPTOR_VERSION 1 |
97 | |
98 | #define EFI_PAGE_SHIFT 12 |
99 | |
100 | typedef struct { |
101 | u32 type; |
102 | u32 pad; |
103 | u64 phys_addr; |
104 | u64 virt_addr; |
105 | u64 num_pages; |
106 | u64 attribute; |
107 | } efi_memory_desc_t; |
108 | |
109 | typedef struct { |
110 | efi_guid_t guid; |
111 | u32 headersize; |
112 | u32 flags; |
113 | u32 imagesize; |
114 | } efi_capsule_header_t; |
115 | |
116 | /* |
117 | * Allocation types for calls to boottime->allocate_pages. |
118 | */ |
119 | #define EFI_ALLOCATE_ANY_PAGES 0 |
120 | #define EFI_ALLOCATE_MAX_ADDRESS 1 |
121 | #define EFI_ALLOCATE_ADDRESS 2 |
122 | #define EFI_MAX_ALLOCATE_TYPE 3 |
123 | |
124 | typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg); |
125 | |
126 | /* |
127 | * Types and defines for Time Services |
128 | */ |
129 | #define EFI_TIME_ADJUST_DAYLIGHT 0x1 |
130 | #define EFI_TIME_IN_DAYLIGHT 0x2 |
131 | #define EFI_UNSPECIFIED_TIMEZONE 0x07ff |
132 | |
133 | typedef struct { |
134 | u16 year; |
135 | u8 month; |
136 | u8 day; |
137 | u8 hour; |
138 | u8 minute; |
139 | u8 second; |
140 | u8 pad1; |
141 | u32 nanosecond; |
142 | s16 timezone; |
143 | u8 daylight; |
144 | u8 pad2; |
145 | } efi_time_t; |
146 | |
147 | typedef struct { |
148 | u32 resolution; |
149 | u32 accuracy; |
150 | u8 sets_to_zero; |
151 | } efi_time_cap_t; |
152 | |
153 | /* |
154 | * EFI Boot Services table |
155 | */ |
156 | typedef struct { |
157 | efi_table_hdr_t hdr; |
158 | void *raise_tpl; |
159 | void *restore_tpl; |
160 | void *allocate_pages; |
161 | void *free_pages; |
162 | void *get_memory_map; |
163 | void *allocate_pool; |
164 | void *free_pool; |
165 | void *create_event; |
166 | void *set_timer; |
167 | void *wait_for_event; |
168 | void *signal_event; |
169 | void *close_event; |
170 | void *check_event; |
171 | void *install_protocol_interface; |
172 | void *reinstall_protocol_interface; |
173 | void *uninstall_protocol_interface; |
174 | void *handle_protocol; |
175 | void *__reserved; |
176 | void *register_protocol_notify; |
177 | void *locate_handle; |
178 | void *locate_device_path; |
179 | void *install_configuration_table; |
180 | void *load_image; |
181 | void *start_image; |
182 | void *exit; |
183 | void *unload_image; |
184 | void *exit_boot_services; |
185 | void *get_next_monotonic_count; |
186 | void *stall; |
187 | void *set_watchdog_timer; |
188 | void *connect_controller; |
189 | void *disconnect_controller; |
190 | void *open_protocol; |
191 | void *close_protocol; |
192 | void *open_protocol_information; |
193 | void *protocols_per_handle; |
194 | void *locate_handle_buffer; |
195 | void *locate_protocol; |
196 | void *install_multiple_protocol_interfaces; |
197 | void *uninstall_multiple_protocol_interfaces; |
198 | void *calculate_crc32; |
199 | void *copy_mem; |
200 | void *set_mem; |
201 | void *create_event_ex; |
202 | } efi_boot_services_t; |
203 | |
204 | typedef enum { |
205 | EfiPciIoWidthUint8, |
206 | EfiPciIoWidthUint16, |
207 | EfiPciIoWidthUint32, |
208 | EfiPciIoWidthUint64, |
209 | EfiPciIoWidthFifoUint8, |
210 | EfiPciIoWidthFifoUint16, |
211 | EfiPciIoWidthFifoUint32, |
212 | EfiPciIoWidthFifoUint64, |
213 | EfiPciIoWidthFillUint8, |
214 | EfiPciIoWidthFillUint16, |
215 | EfiPciIoWidthFillUint32, |
216 | EfiPciIoWidthFillUint64, |
217 | EfiPciIoWidthMaximum |
218 | } EFI_PCI_IO_PROTOCOL_WIDTH; |
219 | |
220 | typedef enum { |
221 | EfiPciIoAttributeOperationGet, |
222 | EfiPciIoAttributeOperationSet, |
223 | EfiPciIoAttributeOperationEnable, |
224 | EfiPciIoAttributeOperationDisable, |
225 | EfiPciIoAttributeOperationSupported, |
226 | EfiPciIoAttributeOperationMaximum |
227 | } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION; |
228 | |
229 | |
230 | typedef struct { |
231 | void *read; |
232 | void *write; |
233 | } efi_pci_io_protocol_access_t; |
234 | |
235 | typedef struct { |
236 | void *poll_mem; |
237 | void *poll_io; |
238 | efi_pci_io_protocol_access_t mem; |
239 | efi_pci_io_protocol_access_t io; |
240 | efi_pci_io_protocol_access_t pci; |
241 | void *copy_mem; |
242 | void *map; |
243 | void *unmap; |
244 | void *allocate_buffer; |
245 | void *free_buffer; |
246 | void *flush; |
247 | void *get_location; |
248 | void *attributes; |
249 | void *get_bar_attributes; |
250 | void *set_bar_attributes; |
251 | uint64_t romsize; |
252 | void *romimage; |
253 | } efi_pci_io_protocol; |
254 | |
255 | #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001 |
256 | #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002 |
257 | #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004 |
258 | #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008 |
259 | #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010 |
260 | #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020 |
261 | #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040 |
262 | #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080 |
263 | #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100 |
264 | #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200 |
265 | #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400 |
266 | #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800 |
267 | #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000 |
268 | #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000 |
269 | #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000 |
270 | #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000 |
271 | #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000 |
272 | #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000 |
273 | #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000 |
274 | |
275 | /* |
276 | * Types and defines for EFI ResetSystem |
277 | */ |
278 | #define EFI_RESET_COLD 0 |
279 | #define EFI_RESET_WARM 1 |
280 | #define EFI_RESET_SHUTDOWN 2 |
281 | |
282 | /* |
283 | * EFI Runtime Services table |
284 | */ |
285 | #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL) |
286 | #define EFI_RUNTIME_SERVICES_REVISION 0x00010000 |
287 | |
288 | typedef struct { |
289 | efi_table_hdr_t hdr; |
290 | void *get_time; |
291 | void *set_time; |
292 | void *get_wakeup_time; |
293 | void *set_wakeup_time; |
294 | void *set_virtual_address_map; |
295 | void *convert_pointer; |
296 | void *get_variable; |
297 | void *get_next_variable; |
298 | void *set_variable; |
299 | void *get_next_high_mono_count; |
300 | void *reset_system; |
301 | void *update_capsule; |
302 | void *query_capsule_caps; |
303 | void *query_variable_info; |
304 | } efi_runtime_services_t; |
305 | |
306 | typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc); |
307 | typedef efi_status_t efi_set_time_t (efi_time_t *tm); |
308 | typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending, |
309 | efi_time_t *tm); |
310 | typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm); |
311 | typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr, |
312 | unsigned long *data_size, void *data); |
313 | typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name, |
314 | efi_guid_t *vendor); |
315 | typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor, |
316 | u32 attr, unsigned long data_size, |
317 | void *data); |
318 | typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count); |
319 | typedef void efi_reset_system_t (int reset_type, efi_status_t status, |
320 | unsigned long data_size, efi_char16_t *data); |
321 | typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size, |
322 | unsigned long descriptor_size, |
323 | u32 descriptor_version, |
324 | efi_memory_desc_t *virtual_map); |
325 | typedef efi_status_t efi_query_variable_info_t(u32 attr, |
326 | u64 *storage_space, |
327 | u64 *remaining_space, |
328 | u64 *max_variable_size); |
329 | typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules, |
330 | unsigned long count, |
331 | unsigned long sg_list); |
332 | typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules, |
333 | unsigned long count, |
334 | u64 *max_size, |
335 | int *reset_type); |
336 | typedef efi_status_t efi_query_variable_store_t(u32 attributes, unsigned long size); |
337 | |
338 | /* |
339 | * EFI Configuration Table and GUID definitions |
340 | */ |
341 | #define NULL_GUID \ |
342 | EFI_GUID( 0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 ) |
343 | |
344 | #define MPS_TABLE_GUID \ |
345 | EFI_GUID( 0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d ) |
346 | |
347 | #define ACPI_TABLE_GUID \ |
348 | EFI_GUID( 0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d ) |
349 | |
350 | #define ACPI_20_TABLE_GUID \ |
351 | EFI_GUID( 0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 ) |
352 | |
353 | #define SMBIOS_TABLE_GUID \ |
354 | EFI_GUID( 0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d ) |
355 | |
356 | #define SAL_SYSTEM_TABLE_GUID \ |
357 | EFI_GUID( 0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d ) |
358 | |
359 | #define HCDP_TABLE_GUID \ |
360 | EFI_GUID( 0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98 ) |
361 | |
362 | #define UGA_IO_PROTOCOL_GUID \ |
363 | EFI_GUID( 0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0xb, 0x7, 0xa2 ) |
364 | |
365 | #define EFI_GLOBAL_VARIABLE_GUID \ |
366 | EFI_GUID( 0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c ) |
367 | |
368 | #define UV_SYSTEM_TABLE_GUID \ |
369 | EFI_GUID( 0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93 ) |
370 | |
371 | #define LINUX_EFI_CRASH_GUID \ |
372 | EFI_GUID( 0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0 ) |
373 | |
374 | #define LOADED_IMAGE_PROTOCOL_GUID \ |
375 | EFI_GUID( 0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b ) |
376 | |
377 | #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \ |
378 | EFI_GUID( 0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a ) |
379 | |
380 | #define EFI_UGA_PROTOCOL_GUID \ |
381 | EFI_GUID( 0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39 ) |
382 | |
383 | #define EFI_PCI_IO_PROTOCOL_GUID \ |
384 | EFI_GUID( 0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x2, 0x9a ) |
385 | |
386 | #define EFI_FILE_INFO_ID \ |
387 | EFI_GUID( 0x9576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b ) |
388 | |
389 | #define EFI_FILE_SYSTEM_GUID \ |
390 | EFI_GUID( 0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b ) |
391 | |
392 | typedef struct { |
393 | efi_guid_t guid; |
394 | u64 table; |
395 | } efi_config_table_64_t; |
396 | |
397 | typedef struct { |
398 | efi_guid_t guid; |
399 | u32 table; |
400 | } efi_config_table_32_t; |
401 | |
402 | typedef struct { |
403 | efi_guid_t guid; |
404 | unsigned long table; |
405 | } efi_config_table_t; |
406 | |
407 | #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL) |
408 | |
409 | #define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30)) |
410 | #define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20)) |
411 | #define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10)) |
412 | #define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00)) |
413 | #define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10)) |
414 | #define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02)) |
415 | |
416 | typedef struct { |
417 | efi_table_hdr_t hdr; |
418 | u64 fw_vendor; /* physical addr of CHAR16 vendor string */ |
419 | u32 fw_revision; |
420 | u32 __pad1; |
421 | u64 con_in_handle; |
422 | u64 con_in; |
423 | u64 con_out_handle; |
424 | u64 con_out; |
425 | u64 stderr_handle; |
426 | u64 stderr; |
427 | u64 runtime; |
428 | u64 boottime; |
429 | u32 nr_tables; |
430 | u32 __pad2; |
431 | u64 tables; |
432 | } efi_system_table_64_t; |
433 | |
434 | typedef struct { |
435 | efi_table_hdr_t hdr; |
436 | u32 fw_vendor; /* physical addr of CHAR16 vendor string */ |
437 | u32 fw_revision; |
438 | u32 con_in_handle; |
439 | u32 con_in; |
440 | u32 con_out_handle; |
441 | u32 con_out; |
442 | u32 stderr_handle; |
443 | u32 stderr; |
444 | u32 runtime; |
445 | u32 boottime; |
446 | u32 nr_tables; |
447 | u32 tables; |
448 | } efi_system_table_32_t; |
449 | |
450 | typedef struct { |
451 | efi_table_hdr_t hdr; |
452 | unsigned long fw_vendor; /* physical addr of CHAR16 vendor string */ |
453 | u32 fw_revision; |
454 | unsigned long con_in_handle; |
455 | unsigned long con_in; |
456 | unsigned long con_out_handle; |
457 | unsigned long con_out; |
458 | unsigned long stderr_handle; |
459 | unsigned long stderr; |
460 | efi_runtime_services_t *runtime; |
461 | efi_boot_services_t *boottime; |
462 | unsigned long nr_tables; |
463 | unsigned long tables; |
464 | } efi_system_table_t; |
465 | |
466 | struct efi_memory_map { |
467 | void *phys_map; |
468 | void *map; |
469 | void *map_end; |
470 | int nr_map; |
471 | unsigned long desc_version; |
472 | unsigned long desc_size; |
473 | }; |
474 | |
475 | typedef struct { |
476 | u32 revision; |
477 | void *parent_handle; |
478 | efi_system_table_t *system_table; |
479 | void *device_handle; |
480 | void *file_path; |
481 | void *reserved; |
482 | u32 load_options_size; |
483 | void *load_options; |
484 | void *image_base; |
485 | __aligned_u64 image_size; |
486 | unsigned int image_code_type; |
487 | unsigned int image_data_type; |
488 | unsigned long unload; |
489 | } efi_loaded_image_t; |
490 | |
491 | typedef struct { |
492 | u64 revision; |
493 | void *open_volume; |
494 | } efi_file_io_interface_t; |
495 | |
496 | typedef struct { |
497 | u64 size; |
498 | u64 file_size; |
499 | u64 phys_size; |
500 | efi_time_t create_time; |
501 | efi_time_t last_access_time; |
502 | efi_time_t modification_time; |
503 | __aligned_u64 attribute; |
504 | efi_char16_t filename[1]; |
505 | } efi_file_info_t; |
506 | |
507 | typedef struct { |
508 | u64 revision; |
509 | void *open; |
510 | void *close; |
511 | void *delete; |
512 | void *read; |
513 | void *write; |
514 | void *get_position; |
515 | void *set_position; |
516 | void *get_info; |
517 | void *set_info; |
518 | void *flush; |
519 | } efi_file_handle_t; |
520 | |
521 | #define EFI_FILE_MODE_READ 0x0000000000000001 |
522 | #define EFI_FILE_MODE_WRITE 0x0000000000000002 |
523 | #define EFI_FILE_MODE_CREATE 0x8000000000000000 |
524 | |
525 | #define EFI_INVALID_TABLE_ADDR (~0UL) |
526 | |
527 | /* |
528 | * All runtime access to EFI goes through this structure: |
529 | */ |
530 | extern struct efi { |
531 | efi_system_table_t *systab; /* EFI system table */ |
532 | unsigned int runtime_version; /* Runtime services version */ |
533 | unsigned long mps; /* MPS table */ |
534 | unsigned long acpi; /* ACPI table (IA64 ext 0.71) */ |
535 | unsigned long acpi20; /* ACPI table (ACPI 2.0) */ |
536 | unsigned long smbios; /* SM BIOS table */ |
537 | unsigned long sal_systab; /* SAL system table */ |
538 | unsigned long boot_info; /* boot info table */ |
539 | unsigned long hcdp; /* HCDP table */ |
540 | unsigned long uga; /* UGA table */ |
541 | unsigned long uv_systab; /* UV system table */ |
542 | efi_get_time_t *get_time; |
543 | efi_set_time_t *set_time; |
544 | efi_get_wakeup_time_t *get_wakeup_time; |
545 | efi_set_wakeup_time_t *set_wakeup_time; |
546 | efi_get_variable_t *get_variable; |
547 | efi_get_next_variable_t *get_next_variable; |
548 | efi_set_variable_t *set_variable; |
549 | efi_query_variable_info_t *query_variable_info; |
550 | efi_update_capsule_t *update_capsule; |
551 | efi_query_capsule_caps_t *query_capsule_caps; |
552 | efi_get_next_high_mono_count_t *get_next_high_mono_count; |
553 | efi_reset_system_t *reset_system; |
554 | efi_set_virtual_address_map_t *set_virtual_address_map; |
555 | } efi; |
556 | |
557 | static inline int |
558 | efi_guidcmp (efi_guid_t left, efi_guid_t right) |
559 | { |
560 | return memcmp(&left, &right, sizeof (efi_guid_t)); |
561 | } |
562 | |
563 | static inline char * |
564 | efi_guid_unparse(efi_guid_t *guid, char *out) |
565 | { |
566 | sprintf(out, "%pUl", guid->b); |
567 | return out; |
568 | } |
569 | |
570 | extern void efi_init (void); |
571 | extern void *efi_get_pal_addr (void); |
572 | extern void efi_map_pal_code (void); |
573 | extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg); |
574 | extern void efi_gettimeofday (struct timespec *ts); |
575 | extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */ |
576 | #ifdef CONFIG_X86 |
577 | extern void efi_late_init(void); |
578 | extern void efi_free_boot_services(void); |
579 | extern efi_status_t efi_query_variable_store(u32 attributes, unsigned long size); |
580 | #else |
581 | static inline void efi_late_init(void) {} |
582 | static inline void efi_free_boot_services(void) {} |
583 | |
584 | static inline efi_status_t efi_query_variable_store(u32 attributes, unsigned long size) |
585 | { |
586 | return EFI_SUCCESS; |
587 | } |
588 | #endif |
589 | extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr); |
590 | extern u64 efi_get_iobase (void); |
591 | extern u32 efi_mem_type (unsigned long phys_addr); |
592 | extern u64 efi_mem_attributes (unsigned long phys_addr); |
593 | extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size); |
594 | extern int __init efi_uart_console_only (void); |
595 | extern void efi_initialize_iomem_resources(struct resource *code_resource, |
596 | struct resource *data_resource, struct resource *bss_resource); |
597 | extern void efi_get_time(struct timespec *now); |
598 | extern int efi_set_rtc_mmss(const struct timespec *now); |
599 | extern void efi_reserve_boot_services(void); |
600 | extern struct efi_memory_map memmap; |
601 | |
602 | /** |
603 | * efi_range_is_wc - check the WC bit on an address range |
604 | * @start: starting kvirt address |
605 | * @len: length of range |
606 | * |
607 | * Consult the EFI memory map and make sure it's ok to set this range WC. |
608 | * Returns true or false. |
609 | */ |
610 | static inline int efi_range_is_wc(unsigned long start, unsigned long len) |
611 | { |
612 | unsigned long i; |
613 | |
614 | for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) { |
615 | unsigned long paddr = __pa(start + i); |
616 | if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC)) |
617 | return 0; |
618 | } |
619 | /* The range checked out */ |
620 | return 1; |
621 | } |
622 | |
623 | #ifdef CONFIG_EFI_PCDP |
624 | extern int __init efi_setup_pcdp_console(char *); |
625 | #endif |
626 | |
627 | /* |
628 | * We play games with efi_enabled so that the compiler will, if |
629 | * possible, remove EFI-related code altogether. |
630 | */ |
631 | #define EFI_BOOT 0 /* Were we booted from EFI? */ |
632 | #define EFI_SYSTEM_TABLES 1 /* Can we use EFI system tables? */ |
633 | #define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */ |
634 | #define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */ |
635 | #define EFI_MEMMAP 4 /* Can we use EFI memory map? */ |
636 | #define EFI_64BIT 5 /* Is the firmware 64-bit? */ |
637 | |
638 | #ifdef CONFIG_EFI |
639 | # ifdef CONFIG_X86 |
640 | extern int efi_enabled(int facility); |
641 | # else |
642 | static inline int efi_enabled(int facility) |
643 | { |
644 | return 1; |
645 | } |
646 | # endif |
647 | #else |
648 | static inline int efi_enabled(int facility) |
649 | { |
650 | return 0; |
651 | } |
652 | #endif |
653 | |
654 | /* |
655 | * Variable Attributes |
656 | */ |
657 | #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001 |
658 | #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002 |
659 | #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004 |
660 | #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008 |
661 | #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010 |
662 | #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020 |
663 | #define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040 |
664 | |
665 | #define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \ |
666 | EFI_VARIABLE_BOOTSERVICE_ACCESS | \ |
667 | EFI_VARIABLE_RUNTIME_ACCESS | \ |
668 | EFI_VARIABLE_HARDWARE_ERROR_RECORD | \ |
669 | EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \ |
670 | EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \ |
671 | EFI_VARIABLE_APPEND_WRITE) |
672 | /* |
673 | * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee")) |
674 | * not including trailing NUL |
675 | */ |
676 | #define EFI_VARIABLE_GUID_LEN 36 |
677 | |
678 | /* |
679 | * The type of search to perform when calling boottime->locate_handle |
680 | */ |
681 | #define EFI_LOCATE_ALL_HANDLES 0 |
682 | #define EFI_LOCATE_BY_REGISTER_NOTIFY 1 |
683 | #define EFI_LOCATE_BY_PROTOCOL 2 |
684 | |
685 | /* |
686 | * EFI Device Path information |
687 | */ |
688 | #define EFI_DEV_HW 0x01 |
689 | #define EFI_DEV_PCI 1 |
690 | #define EFI_DEV_PCCARD 2 |
691 | #define EFI_DEV_MEM_MAPPED 3 |
692 | #define EFI_DEV_VENDOR 4 |
693 | #define EFI_DEV_CONTROLLER 5 |
694 | #define EFI_DEV_ACPI 0x02 |
695 | #define EFI_DEV_BASIC_ACPI 1 |
696 | #define EFI_DEV_EXPANDED_ACPI 2 |
697 | #define EFI_DEV_MSG 0x03 |
698 | #define EFI_DEV_MSG_ATAPI 1 |
699 | #define EFI_DEV_MSG_SCSI 2 |
700 | #define EFI_DEV_MSG_FC 3 |
701 | #define EFI_DEV_MSG_1394 4 |
702 | #define EFI_DEV_MSG_USB 5 |
703 | #define EFI_DEV_MSG_USB_CLASS 15 |
704 | #define EFI_DEV_MSG_I20 6 |
705 | #define EFI_DEV_MSG_MAC 11 |
706 | #define EFI_DEV_MSG_IPV4 12 |
707 | #define EFI_DEV_MSG_IPV6 13 |
708 | #define EFI_DEV_MSG_INFINIBAND 9 |
709 | #define EFI_DEV_MSG_UART 14 |
710 | #define EFI_DEV_MSG_VENDOR 10 |
711 | #define EFI_DEV_MEDIA 0x04 |
712 | #define EFI_DEV_MEDIA_HARD_DRIVE 1 |
713 | #define EFI_DEV_MEDIA_CDROM 2 |
714 | #define EFI_DEV_MEDIA_VENDOR 3 |
715 | #define EFI_DEV_MEDIA_FILE 4 |
716 | #define EFI_DEV_MEDIA_PROTOCOL 5 |
717 | #define EFI_DEV_BIOS_BOOT 0x05 |
718 | #define EFI_DEV_END_PATH 0x7F |
719 | #define EFI_DEV_END_PATH2 0xFF |
720 | #define EFI_DEV_END_INSTANCE 0x01 |
721 | #define EFI_DEV_END_ENTIRE 0xFF |
722 | |
723 | struct efi_generic_dev_path { |
724 | u8 type; |
725 | u8 sub_type; |
726 | u16 length; |
727 | } __attribute ((packed)); |
728 | |
729 | static inline void memrange_efi_to_native(u64 *addr, u64 *npages) |
730 | { |
731 | *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr); |
732 | *addr &= PAGE_MASK; |
733 | } |
734 | |
735 | /* |
736 | * EFI Variable support. |
737 | * |
738 | * Different firmware drivers can expose their EFI-like variables using |
739 | * the following. |
740 | */ |
741 | |
742 | struct efivar_operations { |
743 | efi_get_variable_t *get_variable; |
744 | efi_get_next_variable_t *get_next_variable; |
745 | efi_set_variable_t *set_variable; |
746 | efi_query_variable_store_t *query_variable_store; |
747 | }; |
748 | |
749 | struct efivars { |
750 | /* |
751 | * ->lock protects two things: |
752 | * 1) ->list - adds, removals, reads, writes |
753 | * 2) ops.[gs]et_variable() calls. |
754 | * It must not be held when creating sysfs entries or calling kmalloc. |
755 | * ops.get_next_variable() is only called from register_efivars() |
756 | * or efivar_update_sysfs_entries(), |
757 | * which is protected by the BKL, so that path is safe. |
758 | */ |
759 | spinlock_t lock; |
760 | struct kset *kset; |
761 | struct kobject *kobject; |
762 | const struct efivar_operations *ops; |
763 | }; |
764 | |
765 | /* |
766 | * The maximum size of VariableName + Data = 1024 |
767 | * Therefore, it's reasonable to save that much |
768 | * space in each part of the structure, |
769 | * and we use a page for reading/writing. |
770 | */ |
771 | |
772 | struct efi_variable { |
773 | efi_char16_t VariableName[1024/sizeof(efi_char16_t)]; |
774 | efi_guid_t VendorGuid; |
775 | unsigned long DataSize; |
776 | __u8 Data[1024]; |
777 | efi_status_t Status; |
778 | __u32 Attributes; |
779 | } __attribute__((packed)); |
780 | |
781 | struct efivar_entry { |
782 | struct efi_variable var; |
783 | struct list_head list; |
784 | struct kobject kobj; |
785 | }; |
786 | |
787 | extern struct list_head efivar_sysfs_list; |
788 | |
789 | static inline void |
790 | efivar_unregister(struct efivar_entry *var) |
791 | { |
792 | kobject_put(&var->kobj); |
793 | } |
794 | |
795 | int efivars_register(struct efivars *efivars, |
796 | const struct efivar_operations *ops, |
797 | struct kobject *kobject); |
798 | int efivars_unregister(struct efivars *efivars); |
799 | struct kobject *efivars_kobject(void); |
800 | |
801 | int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *), |
802 | void *data, bool atomic, bool duplicates, |
803 | struct list_head *head); |
804 | |
805 | void efivar_entry_add(struct efivar_entry *entry, struct list_head *head); |
806 | void efivar_entry_remove(struct efivar_entry *entry); |
807 | |
808 | int __efivar_entry_delete(struct efivar_entry *entry); |
809 | int efivar_entry_delete(struct efivar_entry *entry); |
810 | |
811 | int efivar_entry_size(struct efivar_entry *entry, unsigned long *size); |
812 | int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes, |
813 | unsigned long *size, void *data); |
814 | int efivar_entry_get(struct efivar_entry *entry, u32 *attributes, |
815 | unsigned long *size, void *data); |
816 | int efivar_entry_set(struct efivar_entry *entry, u32 attributes, |
817 | unsigned long size, void *data, struct list_head *head); |
818 | int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes, |
819 | unsigned long *size, void *data, bool *set); |
820 | int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes, |
821 | bool block, unsigned long size, void *data); |
822 | |
823 | void efivar_entry_iter_begin(void); |
824 | void efivar_entry_iter_end(void); |
825 | |
826 | int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *), |
827 | struct list_head *head, void *data, |
828 | struct efivar_entry **prev); |
829 | int efivar_entry_iter(int (*func)(struct efivar_entry *, void *), |
830 | struct list_head *head, void *data); |
831 | |
832 | struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid, |
833 | struct list_head *head, bool remove); |
834 | |
835 | bool efivar_validate(struct efi_variable *var, u8 *data, unsigned long len); |
836 | |
837 | extern struct work_struct efivar_work; |
838 | void efivar_run_worker(void); |
839 | |
840 | #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE) |
841 | int efivars_sysfs_init(void); |
842 | |
843 | #endif /* CONFIG_EFI_VARS */ |
844 | |
845 | #endif /* _LINUX_EFI_H */ |
846 |
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