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16#ifndef _EFI_H
17#define _EFI_H
18
19#include <linux/linkage.h>
20#include <linux/string.h>
21#include <linux/types.h>
22
23
24#define efi_intn_t ssize_t
25
26#define efi_uintn_t size_t
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35
36#ifdef __x86_64__
37#define EFIAPI __attribute__((ms_abi))
38#define efi_va_list __builtin_ms_va_list
39#define efi_va_start __builtin_ms_va_start
40#define efi_va_arg __builtin_va_arg
41#define efi_va_end __builtin_ms_va_end
42#else
43#define EFIAPI asmlinkage
44#define efi_va_list va_list
45#define efi_va_start va_start
46#define efi_va_arg va_arg
47#define efi_va_end va_end
48#endif
49
50#define EFI32_LOADER_SIGNATURE "EL32"
51#define EFI64_LOADER_SIGNATURE "EL64"
52
53struct efi_device_path;
54
55typedef struct {
56 u8 b[16];
57} efi_guid_t __attribute__((aligned(8)));
58
59#define EFI_BITS_PER_LONG (sizeof(long) * 8)
60
61
62#define EFI_ERROR_MASK (1UL << (EFI_BITS_PER_LONG - 1))
63
64#define EFI_SUCCESS 0
65#define EFI_LOAD_ERROR (EFI_ERROR_MASK | 1)
66#define EFI_INVALID_PARAMETER (EFI_ERROR_MASK | 2)
67#define EFI_UNSUPPORTED (EFI_ERROR_MASK | 3)
68#define EFI_BAD_BUFFER_SIZE (EFI_ERROR_MASK | 4)
69#define EFI_BUFFER_TOO_SMALL (EFI_ERROR_MASK | 5)
70#define EFI_NOT_READY (EFI_ERROR_MASK | 6)
71#define EFI_DEVICE_ERROR (EFI_ERROR_MASK | 7)
72#define EFI_WRITE_PROTECTED (EFI_ERROR_MASK | 8)
73#define EFI_OUT_OF_RESOURCES (EFI_ERROR_MASK | 9)
74#define EFI_VOLUME_CORRUPTED (EFI_ERROR_MASK | 10)
75#define EFI_VOLUME_FULL (EFI_ERROR_MASK | 11)
76#define EFI_NO_MEDIA (EFI_ERROR_MASK | 12)
77#define EFI_MEDIA_CHANGED (EFI_ERROR_MASK | 13)
78#define EFI_NOT_FOUND (EFI_ERROR_MASK | 14)
79#define EFI_ACCESS_DENIED (EFI_ERROR_MASK | 15)
80#define EFI_NO_RESPONSE (EFI_ERROR_MASK | 16)
81#define EFI_NO_MAPPING (EFI_ERROR_MASK | 17)
82#define EFI_TIMEOUT (EFI_ERROR_MASK | 18)
83#define EFI_NOT_STARTED (EFI_ERROR_MASK | 19)
84#define EFI_ALREADY_STARTED (EFI_ERROR_MASK | 20)
85#define EFI_ABORTED (EFI_ERROR_MASK | 21)
86#define EFI_ICMP_ERROR (EFI_ERROR_MASK | 22)
87#define EFI_TFTP_ERROR (EFI_ERROR_MASK | 23)
88#define EFI_PROTOCOL_ERROR (EFI_ERROR_MASK | 24)
89#define EFI_INCOMPATIBLE_VERSION (EFI_ERROR_MASK | 25)
90#define EFI_SECURITY_VIOLATION (EFI_ERROR_MASK | 26)
91#define EFI_CRC_ERROR (EFI_ERROR_MASK | 27)
92#define EFI_END_OF_MEDIA (EFI_ERROR_MASK | 28)
93#define EFI_END_OF_FILE (EFI_ERROR_MASK | 31)
94#define EFI_INVALID_LANGUAGE (EFI_ERROR_MASK | 32)
95#define EFI_COMPROMISED_DATA (EFI_ERROR_MASK | 33)
96#define EFI_IP_ADDRESS_CONFLICT (EFI_ERROR_MASK | 34)
97#define EFI_HTTP_ERROR (EFI_ERROR_MASK | 35)
98
99#define EFI_WARN_UNKNOWN_GLYPH 1
100#define EFI_WARN_DELETE_FAILURE 2
101#define EFI_WARN_WRITE_FAILURE 3
102#define EFI_WARN_BUFFER_TOO_SMALL 4
103#define EFI_WARN_STALE_DATA 5
104#define EFI_WARN_FILE_SYSTEM 6
105#define EFI_WARN_RESET_REQUIRED 7
106
107typedef unsigned long efi_status_t;
108typedef u64 efi_physical_addr_t;
109typedef u64 efi_virtual_addr_t;
110typedef struct efi_object *efi_handle_t;
111
112#define EFI_GUID(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \
113 {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, \
114 ((a) >> 24) & 0xff, \
115 (b) & 0xff, ((b) >> 8) & 0xff, \
116 (c) & 0xff, ((c) >> 8) & 0xff, \
117 (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) } }
118
119
120struct efi_table_hdr {
121 u64 signature;
122 u32 revision;
123 u32 headersize;
124 u32 crc32;
125 u32 reserved;
126};
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131
132enum efi_allocate_type {
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136
137 EFI_ALLOCATE_ANY_PAGES,
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143 EFI_ALLOCATE_MAX_ADDRESS,
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148 EFI_ALLOCATE_ADDRESS,
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153 EFI_MAX_ALLOCATE_TYPE,
154};
155
156
157enum efi_memory_type {
158 EFI_RESERVED_MEMORY_TYPE,
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162
163 EFI_LOADER_CODE,
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169 EFI_LOADER_DATA,
170
171 EFI_BOOT_SERVICES_CODE,
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177 EFI_BOOT_SERVICES_DATA,
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179 EFI_RUNTIME_SERVICES_CODE,
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185 EFI_RUNTIME_SERVICES_DATA,
186
187 EFI_CONVENTIONAL_MEMORY,
188
189 EFI_UNUSABLE_MEMORY,
190
191 EFI_ACPI_RECLAIM_MEMORY,
192
193 EFI_ACPI_MEMORY_NVS,
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199 EFI_MMAP_IO,
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204 EFI_MMAP_IO_PORT,
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209 EFI_PAL_CODE,
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211
212
213 EFI_PERSISTENT_MEMORY_TYPE,
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215
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217 EFI_UNACCEPTED_MEMORY_TYPE,
218
219 EFI_MAX_MEMORY_TYPE,
220};
221
222
223#define EFI_MEMORY_UC ((u64)0x0000000000000001ULL)
224#define EFI_MEMORY_WC ((u64)0x0000000000000002ULL)
225#define EFI_MEMORY_WT ((u64)0x0000000000000004ULL)
226#define EFI_MEMORY_WB ((u64)0x0000000000000008ULL)
227#define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL)
228#define EFI_MEMORY_WP ((u64)0x0000000000001000ULL)
229#define EFI_MEMORY_RP ((u64)0x0000000000002000ULL)
230#define EFI_MEMORY_XP ((u64)0x0000000000004000ULL)
231#define EFI_MEMORY_NV ((u64)0x0000000000008000ULL)
232#define EFI_MEMORY_MORE_RELIABLE \
233 ((u64)0x0000000000010000ULL)
234#define EFI_MEMORY_RO ((u64)0x0000000000020000ULL)
235#define EFI_MEMORY_SP ((u64)0x0000000000040000ULL)
236#define EFI_MEMORY_CPU_CRYPTO ((u64)0x0000000000080000ULL)
237#define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL)
238#define EFI_MEM_DESC_VERSION 1
239
240#define EFI_PAGE_SHIFT 12
241#define EFI_PAGE_SIZE (1ULL << EFI_PAGE_SHIFT)
242#define EFI_PAGE_MASK (EFI_PAGE_SIZE - 1)
243
244struct efi_mem_desc {
245 u32 type;
246 u32 reserved;
247 efi_physical_addr_t physical_start;
248 efi_virtual_addr_t virtual_start;
249 u64 num_pages;
250 u64 attribute;
251};
252
253#define EFI_MEMORY_DESCRIPTOR_VERSION 1
254
255
256#define EFI_TIME_ADJUST_DAYLIGHT 0x1
257#define EFI_TIME_IN_DAYLIGHT 0x2
258#define EFI_UNSPECIFIED_TIMEZONE 0x07ff
259
260struct efi_time {
261 u16 year;
262 u8 month;
263 u8 day;
264 u8 hour;
265 u8 minute;
266 u8 second;
267 u8 pad1;
268 u32 nanosecond;
269 s16 timezone;
270 u8 daylight;
271 u8 pad2;
272};
273
274struct efi_time_cap {
275 u32 resolution;
276 u32 accuracy;
277 u8 sets_to_zero;
278};
279
280enum efi_locate_search_type {
281 ALL_HANDLES,
282 BY_REGISTER_NOTIFY,
283 BY_PROTOCOL
284};
285
286struct efi_open_protocol_info_entry {
287 efi_handle_t agent_handle;
288 efi_handle_t controller_handle;
289 u32 attributes;
290 u32 open_count;
291};
292
293enum efi_entry_t {
294 EFIET_END,
295 EFIET_MEMORY_MAP,
296 EFIET_GOP_MODE,
297 EFIET_SYS_TABLE,
298
299
300 EFIET_MEMORY_COUNT,
301};
302
303#define EFI_TABLE_VERSION 1
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313struct efi_info_hdr {
314 u32 version;
315 u32 hdr_size;
316 u32 total_size;
317 u32 spare[5];
318};
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330struct efi_entry_hdr {
331 u32 type;
332 u32 size;
333 u64 addr;
334 u32 link;
335 u32 spare1;
336 u64 spare2;
337};
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347struct efi_entry_memmap {
348 u32 version;
349 u32 desc_size;
350 u64 spare;
351 struct efi_mem_desc desc[];
352};
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362struct efi_entry_gopmode {
363 efi_physical_addr_t fb_base;
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371 u64 fb_size;
372 u64 info_size;
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378 struct {
379 u32 version;
380 u32 width;
381 u32 height;
382 u32 pixel_format;
383 u32 pixel_bitmask[4];
384 u32 pixels_per_scanline;
385 } info[];
386};
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392
393struct efi_entry_systable {
394 efi_physical_addr_t sys_table;
395};
396
397static inline struct efi_mem_desc *efi_get_next_mem_desc(
398 struct efi_entry_memmap *map, struct efi_mem_desc *desc)
399{
400 return (struct efi_mem_desc *)((ulong)desc + map->desc_size);
401}
402
403struct efi_priv {
404 efi_handle_t parent_image;
405 struct efi_device_path *device_path;
406 struct efi_system_table *sys_table;
407 struct efi_boot_services *boot;
408 struct efi_runtime_services *run;
409 bool use_pool_for_malloc;
410 unsigned long ram_base;
411 unsigned int image_data_type;
412 struct efi_info_hdr *info;
413 unsigned int info_size;
414 void *next_hdr;
415};
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422
423struct efi_media_plat {
424 efi_handle_t handle;
425 struct efi_block_io *blkio;
426};
427
428
429extern char image_base[];
430
431
432extern char _binary_u_boot_bin_start[], _binary_u_boot_bin_end[];
433
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436
437#define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001
438#define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
439#define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004
440#define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008
441#define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010
442#define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
443#define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040
444
445#define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \
446 EFI_VARIABLE_BOOTSERVICE_ACCESS | \
447 EFI_VARIABLE_RUNTIME_ACCESS | \
448 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \
449 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \
450 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \
451 EFI_VARIABLE_APPEND_WRITE)
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458struct efi_system_table *efi_get_sys_table(void);
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465struct efi_boot_services *efi_get_boot(void);
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474unsigned long efi_get_ram_base(void);
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484int efi_init(struct efi_priv *priv, const char *banner, efi_handle_t image,
485 struct efi_system_table *sys_table);
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495void *efi_malloc(struct efi_priv *priv, int size, efi_status_t *retp);
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503void efi_free(struct efi_priv *priv, void *ptr);
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511void efi_puts(struct efi_priv *priv, const char *str);
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519void efi_putc(struct efi_priv *priv, const char ch);
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530int efi_info_get(enum efi_entry_t type, void **datap, int *sizep);
531
532#endif
533