1
2#ifndef _LINUX_EFI_H
3#define _LINUX_EFI_H
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15#include <linux/init.h>
16#include <linux/string.h>
17#include <linux/time.h>
18#include <linux/types.h>
19#include <linux/proc_fs.h>
20#include <linux/rtc.h>
21#include <linux/ioport.h>
22#include <linux/pfn.h>
23#include <linux/pstore.h>
24#include <linux/range.h>
25#include <linux/reboot.h>
26#include <linux/uuid.h>
27#include <linux/screen_info.h>
28
29#include <asm/page.h>
30
31#define EFI_SUCCESS 0
32#define EFI_LOAD_ERROR ( 1 | (1UL << (BITS_PER_LONG-1)))
33#define EFI_INVALID_PARAMETER ( 2 | (1UL << (BITS_PER_LONG-1)))
34#define EFI_UNSUPPORTED ( 3 | (1UL << (BITS_PER_LONG-1)))
35#define EFI_BAD_BUFFER_SIZE ( 4 | (1UL << (BITS_PER_LONG-1)))
36#define EFI_BUFFER_TOO_SMALL ( 5 | (1UL << (BITS_PER_LONG-1)))
37#define EFI_NOT_READY ( 6 | (1UL << (BITS_PER_LONG-1)))
38#define EFI_DEVICE_ERROR ( 7 | (1UL << (BITS_PER_LONG-1)))
39#define EFI_WRITE_PROTECTED ( 8 | (1UL << (BITS_PER_LONG-1)))
40#define EFI_OUT_OF_RESOURCES ( 9 | (1UL << (BITS_PER_LONG-1)))
41#define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG-1)))
42#define EFI_ABORTED (21 | (1UL << (BITS_PER_LONG-1)))
43#define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1)))
44
45typedef unsigned long efi_status_t;
46typedef u8 efi_bool_t;
47typedef u16 efi_char16_t;
48typedef u64 efi_physical_addr_t;
49typedef void *efi_handle_t;
50
51#if defined(CONFIG_X86_64)
52#define __efiapi __attribute__((ms_abi))
53#elif defined(CONFIG_X86_32)
54#define __efiapi __attribute__((regparm(0)))
55#else
56#define __efiapi
57#endif
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71
72typedef guid_t efi_guid_t __aligned(__alignof__(u32));
73
74#define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
75 GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)
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78
79
80typedef struct {
81 u64 signature;
82 u32 revision;
83 u32 headersize;
84 u32 crc32;
85 u32 reserved;
86} efi_table_hdr_t;
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92
93#define EFI_RESERVED_TYPE 0
94#define EFI_LOADER_CODE 1
95#define EFI_LOADER_DATA 2
96#define EFI_BOOT_SERVICES_CODE 3
97#define EFI_BOOT_SERVICES_DATA 4
98#define EFI_RUNTIME_SERVICES_CODE 5
99#define EFI_RUNTIME_SERVICES_DATA 6
100#define EFI_CONVENTIONAL_MEMORY 7
101#define EFI_UNUSABLE_MEMORY 8
102#define EFI_ACPI_RECLAIM_MEMORY 9
103#define EFI_ACPI_MEMORY_NVS 10
104#define EFI_MEMORY_MAPPED_IO 11
105#define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12
106#define EFI_PAL_CODE 13
107#define EFI_PERSISTENT_MEMORY 14
108#define EFI_MAX_MEMORY_TYPE 15
109
110
111#define EFI_MEMORY_UC ((u64)0x0000000000000001ULL)
112#define EFI_MEMORY_WC ((u64)0x0000000000000002ULL)
113#define EFI_MEMORY_WT ((u64)0x0000000000000004ULL)
114#define EFI_MEMORY_WB ((u64)0x0000000000000008ULL)
115#define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL)
116#define EFI_MEMORY_WP ((u64)0x0000000000001000ULL)
117#define EFI_MEMORY_RP ((u64)0x0000000000002000ULL)
118#define EFI_MEMORY_XP ((u64)0x0000000000004000ULL)
119#define EFI_MEMORY_NV ((u64)0x0000000000008000ULL)
120#define EFI_MEMORY_MORE_RELIABLE \
121 ((u64)0x0000000000010000ULL)
122#define EFI_MEMORY_RO ((u64)0x0000000000020000ULL)
123#define EFI_MEMORY_SP ((u64)0x0000000000040000ULL)
124#define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL)
125#define EFI_MEMORY_DESCRIPTOR_VERSION 1
126
127#define EFI_PAGE_SHIFT 12
128#define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT)
129#define EFI_PAGES_MAX (U64_MAX >> EFI_PAGE_SHIFT)
130
131typedef struct {
132 u32 type;
133 u32 pad;
134 u64 phys_addr;
135 u64 virt_addr;
136 u64 num_pages;
137 u64 attribute;
138} efi_memory_desc_t;
139
140typedef struct {
141 efi_guid_t guid;
142 u32 headersize;
143 u32 flags;
144 u32 imagesize;
145} efi_capsule_header_t;
146
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149
150#define EFI_CAPSULE_PERSIST_ACROSS_RESET 0x00010000
151#define EFI_CAPSULE_POPULATE_SYSTEM_TABLE 0x00020000
152#define EFI_CAPSULE_INITIATE_RESET 0x00040000
153
154struct capsule_info {
155 efi_capsule_header_t header;
156 efi_capsule_header_t *capsule;
157 int reset_type;
158 long index;
159 size_t count;
160 size_t total_size;
161 struct page **pages;
162 phys_addr_t *phys;
163 size_t page_bytes_remain;
164};
165
166int __efi_capsule_setup_info(struct capsule_info *cap_info);
167
168typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg);
169
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172
173#define EFI_TIME_ADJUST_DAYLIGHT 0x1
174#define EFI_TIME_IN_DAYLIGHT 0x2
175#define EFI_UNSPECIFIED_TIMEZONE 0x07ff
176
177typedef struct {
178 u16 year;
179 u8 month;
180 u8 day;
181 u8 hour;
182 u8 minute;
183 u8 second;
184 u8 pad1;
185 u32 nanosecond;
186 s16 timezone;
187 u8 daylight;
188 u8 pad2;
189} efi_time_t;
190
191typedef struct {
192 u32 resolution;
193 u32 accuracy;
194 u8 sets_to_zero;
195} efi_time_cap_t;
196
197typedef union efi_boot_services efi_boot_services_t;
198
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201
202#define EFI_RESET_COLD 0
203#define EFI_RESET_WARM 1
204#define EFI_RESET_SHUTDOWN 2
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208
209#define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL)
210#define EFI_RUNTIME_SERVICES_REVISION 0x00010000
211
212typedef struct {
213 efi_table_hdr_t hdr;
214 u32 get_time;
215 u32 set_time;
216 u32 get_wakeup_time;
217 u32 set_wakeup_time;
218 u32 set_virtual_address_map;
219 u32 convert_pointer;
220 u32 get_variable;
221 u32 get_next_variable;
222 u32 set_variable;
223 u32 get_next_high_mono_count;
224 u32 reset_system;
225 u32 update_capsule;
226 u32 query_capsule_caps;
227 u32 query_variable_info;
228} efi_runtime_services_32_t;
229
230typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc);
231typedef efi_status_t efi_set_time_t (efi_time_t *tm);
232typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending,
233 efi_time_t *tm);
234typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm);
235typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr,
236 unsigned long *data_size, void *data);
237typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name,
238 efi_guid_t *vendor);
239typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor,
240 u32 attr, unsigned long data_size,
241 void *data);
242typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count);
243typedef void efi_reset_system_t (int reset_type, efi_status_t status,
244 unsigned long data_size, efi_char16_t *data);
245typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size,
246 unsigned long descriptor_size,
247 u32 descriptor_version,
248 efi_memory_desc_t *virtual_map);
249typedef efi_status_t efi_query_variable_info_t(u32 attr,
250 u64 *storage_space,
251 u64 *remaining_space,
252 u64 *max_variable_size);
253typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules,
254 unsigned long count,
255 unsigned long sg_list);
256typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules,
257 unsigned long count,
258 u64 *max_size,
259 int *reset_type);
260typedef efi_status_t efi_query_variable_store_t(u32 attributes,
261 unsigned long size,
262 bool nonblocking);
263
264typedef union {
265 struct {
266 efi_table_hdr_t hdr;
267 efi_get_time_t __efiapi *get_time;
268 efi_set_time_t __efiapi *set_time;
269 efi_get_wakeup_time_t __efiapi *get_wakeup_time;
270 efi_set_wakeup_time_t __efiapi *set_wakeup_time;
271 efi_set_virtual_address_map_t __efiapi *set_virtual_address_map;
272 void *convert_pointer;
273 efi_get_variable_t __efiapi *get_variable;
274 efi_get_next_variable_t __efiapi *get_next_variable;
275 efi_set_variable_t __efiapi *set_variable;
276 efi_get_next_high_mono_count_t __efiapi *get_next_high_mono_count;
277 efi_reset_system_t __efiapi *reset_system;
278 efi_update_capsule_t __efiapi *update_capsule;
279 efi_query_capsule_caps_t __efiapi *query_capsule_caps;
280 efi_query_variable_info_t __efiapi *query_variable_info;
281 };
282 efi_runtime_services_32_t mixed_mode;
283} efi_runtime_services_t;
284
285void efi_native_runtime_setup(void);
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308#define NULL_GUID EFI_GUID(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
309#define MPS_TABLE_GUID EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
310#define ACPI_TABLE_GUID EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
311#define ACPI_20_TABLE_GUID EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81)
312#define SMBIOS_TABLE_GUID EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
313#define SMBIOS3_TABLE_GUID EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c, 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94)
314#define SAL_SYSTEM_TABLE_GUID EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
315#define HCDP_TABLE_GUID EFI_GUID(0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98)
316#define UGA_IO_PROTOCOL_GUID EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2)
317#define EFI_GLOBAL_VARIABLE_GUID EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c)
318#define UV_SYSTEM_TABLE_GUID EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93)
319#define LINUX_EFI_CRASH_GUID EFI_GUID(0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0)
320#define LOADED_IMAGE_PROTOCOL_GUID EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
321#define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a)
322#define EFI_UGA_PROTOCOL_GUID EFI_GUID(0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39)
323#define EFI_PCI_IO_PROTOCOL_GUID EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a)
324#define EFI_FILE_INFO_ID EFI_GUID(0x09576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
325#define EFI_SYSTEM_RESOURCE_TABLE_GUID EFI_GUID(0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80)
326#define EFI_FILE_SYSTEM_GUID EFI_GUID(0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
327#define DEVICE_TREE_GUID EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0)
328#define EFI_PROPERTIES_TABLE_GUID EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5)
329#define EFI_RNG_PROTOCOL_GUID EFI_GUID(0x3152bca5, 0xeade, 0x433d, 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44)
330#define EFI_RNG_ALGORITHM_RAW EFI_GUID(0xe43176d7, 0xb6e8, 0x4827, 0xb7, 0x84, 0x7f, 0xfd, 0xc4, 0xb6, 0x85, 0x61)
331#define EFI_MEMORY_ATTRIBUTES_TABLE_GUID EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20)
332#define EFI_CONSOLE_OUT_DEVICE_GUID EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4, 0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
333#define APPLE_PROPERTIES_PROTOCOL_GUID EFI_GUID(0x91bd12fe, 0xf6c3, 0x44fb, 0xa5, 0xb7, 0x51, 0x22, 0xab, 0x30, 0x3a, 0xe0)
334#define EFI_TCG2_PROTOCOL_GUID EFI_GUID(0x607f766c, 0x7455, 0x42be, 0x93, 0x0b, 0xe4, 0xd7, 0x6d, 0xb2, 0x72, 0x0f)
335#define EFI_LOAD_FILE_PROTOCOL_GUID EFI_GUID(0x56ec3091, 0x954c, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
336#define EFI_LOAD_FILE2_PROTOCOL_GUID EFI_GUID(0x4006c0c1, 0xfcb3, 0x403e, 0x99, 0x6d, 0x4a, 0x6c, 0x87, 0x24, 0xe0, 0x6d)
337#define EFI_RT_PROPERTIES_TABLE_GUID EFI_GUID(0xeb66918a, 0x7eef, 0x402a, 0x84, 0x2e, 0x93, 0x1d, 0x21, 0xc3, 0x8a, 0xe9)
338
339#define EFI_IMAGE_SECURITY_DATABASE_GUID EFI_GUID(0xd719b2cb, 0x3d3a, 0x4596, 0xa3, 0xbc, 0xda, 0xd0, 0x0e, 0x67, 0x65, 0x6f)
340#define EFI_SHIM_LOCK_GUID EFI_GUID(0x605dab50, 0xe046, 0x4300, 0xab, 0xb6, 0x3d, 0xd8, 0x10, 0xdd, 0x8b, 0x23)
341
342#define EFI_CERT_SHA256_GUID EFI_GUID(0xc1c41626, 0x504c, 0x4092, 0xac, 0xa9, 0x41, 0xf9, 0x36, 0x93, 0x43, 0x28)
343#define EFI_CERT_X509_GUID EFI_GUID(0xa5c059a1, 0x94e4, 0x4aa7, 0x87, 0xb5, 0xab, 0x15, 0x5c, 0x2b, 0xf0, 0x72)
344#define EFI_CERT_X509_SHA256_GUID EFI_GUID(0x3bd2a492, 0x96c0, 0x4079, 0xb4, 0x20, 0xfc, 0xf9, 0x8e, 0xf1, 0x03, 0xed)
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351#define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, 0xb9, 0x0e, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95)
352#define LINUX_EFI_LOADER_ENTRY_GUID EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f)
353#define LINUX_EFI_RANDOM_SEED_TABLE_GUID EFI_GUID(0x1ce1e5bc, 0x7ceb, 0x42f2, 0x81, 0xe5, 0x8a, 0xad, 0xf1, 0x80, 0xf5, 0x7b)
354#define LINUX_EFI_TPM_EVENT_LOG_GUID EFI_GUID(0xb7799cb0, 0xeca2, 0x4943, 0x96, 0x67, 0x1f, 0xae, 0x07, 0xb7, 0x47, 0xfa)
355#define LINUX_EFI_TPM_FINAL_LOG_GUID EFI_GUID(0x1e2ed096, 0x30e2, 0x4254, 0xbd, 0x89, 0x86, 0x3b, 0xbe, 0xf8, 0x23, 0x25)
356#define LINUX_EFI_MEMRESERVE_TABLE_GUID EFI_GUID(0x888eb0c6, 0x8ede, 0x4ff5, 0xa8, 0xf0, 0x9a, 0xee, 0x5c, 0xb9, 0x77, 0xc2)
357#define LINUX_EFI_INITRD_MEDIA_GUID EFI_GUID(0x5568e427, 0x68fc, 0x4f3d, 0xac, 0x74, 0xca, 0x55, 0x52, 0x31, 0xcc, 0x68)
358
359
360#define DELLEMC_EFI_RCI2_TABLE_GUID EFI_GUID(0x2d9f28a2, 0xa886, 0x456a, 0x97, 0xa8, 0xf1, 0x1e, 0xf2, 0x4f, 0xf4, 0x55)
361
362typedef struct {
363 efi_guid_t guid;
364 u64 table;
365} efi_config_table_64_t;
366
367typedef struct {
368 efi_guid_t guid;
369 u32 table;
370} efi_config_table_32_t;
371
372typedef union {
373 struct {
374 efi_guid_t guid;
375 void *table;
376 };
377 efi_config_table_32_t mixed_mode;
378} efi_config_table_t;
379
380typedef struct {
381 efi_guid_t guid;
382 const char *name;
383 unsigned long *ptr;
384} efi_config_table_type_t;
385
386#define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
387
388#define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30))
389#define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20))
390#define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10))
391#define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00))
392#define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10))
393#define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02))
394
395typedef struct {
396 efi_table_hdr_t hdr;
397 u64 fw_vendor;
398 u32 fw_revision;
399 u32 __pad1;
400 u64 con_in_handle;
401 u64 con_in;
402 u64 con_out_handle;
403 u64 con_out;
404 u64 stderr_handle;
405 u64 stderr;
406 u64 runtime;
407 u64 boottime;
408 u32 nr_tables;
409 u32 __pad2;
410 u64 tables;
411} efi_system_table_64_t;
412
413typedef struct {
414 efi_table_hdr_t hdr;
415 u32 fw_vendor;
416 u32 fw_revision;
417 u32 con_in_handle;
418 u32 con_in;
419 u32 con_out_handle;
420 u32 con_out;
421 u32 stderr_handle;
422 u32 stderr;
423 u32 runtime;
424 u32 boottime;
425 u32 nr_tables;
426 u32 tables;
427} efi_system_table_32_t;
428
429typedef union efi_simple_text_output_protocol efi_simple_text_output_protocol_t;
430
431typedef union {
432 struct {
433 efi_table_hdr_t hdr;
434 unsigned long fw_vendor;
435 u32 fw_revision;
436 unsigned long con_in_handle;
437 unsigned long con_in;
438 unsigned long con_out_handle;
439 efi_simple_text_output_protocol_t *con_out;
440 unsigned long stderr_handle;
441 unsigned long stderr;
442 efi_runtime_services_t *runtime;
443 efi_boot_services_t *boottime;
444 unsigned long nr_tables;
445 unsigned long tables;
446 };
447 efi_system_table_32_t mixed_mode;
448} efi_system_table_t;
449
450
451
452
453
454
455struct efi_memory_map_data {
456 phys_addr_t phys_map;
457 unsigned long size;
458 unsigned long desc_version;
459 unsigned long desc_size;
460 unsigned long flags;
461};
462
463struct efi_memory_map {
464 phys_addr_t phys_map;
465 void *map;
466 void *map_end;
467 int nr_map;
468 unsigned long desc_version;
469 unsigned long desc_size;
470#define EFI_MEMMAP_LATE (1UL << 0)
471#define EFI_MEMMAP_MEMBLOCK (1UL << 1)
472#define EFI_MEMMAP_SLAB (1UL << 2)
473 unsigned long flags;
474};
475
476struct efi_mem_range {
477 struct range range;
478 u64 attribute;
479};
480
481typedef struct {
482 u32 version;
483 u32 length;
484 u64 memory_protection_attribute;
485} efi_properties_table_t;
486
487#define EFI_PROPERTIES_TABLE_VERSION 0x00010000
488#define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA 0x1
489
490typedef struct {
491 u16 version;
492 u16 length;
493 u32 runtime_services_supported;
494} efi_rt_properties_table_t;
495
496#define EFI_RT_PROPERTIES_TABLE_VERSION 0x1
497
498#define EFI_INVALID_TABLE_ADDR (~0UL)
499
500typedef struct {
501 u32 version;
502 u32 num_entries;
503 u32 desc_size;
504 u32 reserved;
505 efi_memory_desc_t entry[0];
506} efi_memory_attributes_table_t;
507
508typedef struct {
509 efi_guid_t signature_owner;
510 u8 signature_data[];
511} efi_signature_data_t;
512
513typedef struct {
514 efi_guid_t signature_type;
515 u32 signature_list_size;
516 u32 signature_header_size;
517 u32 signature_size;
518 u8 signature_header[];
519
520} efi_signature_list_t;
521
522typedef u8 efi_sha256_hash_t[32];
523
524typedef struct {
525 efi_sha256_hash_t to_be_signed_hash;
526 efi_time_t time_of_revocation;
527} efi_cert_x509_sha256_t;
528
529extern unsigned long __ro_after_init efi_rng_seed;
530
531
532
533
534extern struct efi {
535 const efi_runtime_services_t *runtime;
536 unsigned int runtime_version;
537 unsigned int runtime_supported_mask;
538
539 unsigned long acpi;
540 unsigned long acpi20;
541 unsigned long smbios;
542 unsigned long smbios3;
543 unsigned long esrt;
544 unsigned long tpm_log;
545 unsigned long tpm_final_log;
546
547 efi_get_time_t *get_time;
548 efi_set_time_t *set_time;
549 efi_get_wakeup_time_t *get_wakeup_time;
550 efi_set_wakeup_time_t *set_wakeup_time;
551 efi_get_variable_t *get_variable;
552 efi_get_next_variable_t *get_next_variable;
553 efi_set_variable_t *set_variable;
554 efi_set_variable_t *set_variable_nonblocking;
555 efi_query_variable_info_t *query_variable_info;
556 efi_query_variable_info_t *query_variable_info_nonblocking;
557 efi_update_capsule_t *update_capsule;
558 efi_query_capsule_caps_t *query_capsule_caps;
559 efi_get_next_high_mono_count_t *get_next_high_mono_count;
560 efi_reset_system_t *reset_system;
561
562 struct efi_memory_map memmap;
563 unsigned long flags;
564} efi;
565
566#define EFI_RT_SUPPORTED_GET_TIME 0x0001
567#define EFI_RT_SUPPORTED_SET_TIME 0x0002
568#define EFI_RT_SUPPORTED_GET_WAKEUP_TIME 0x0004
569#define EFI_RT_SUPPORTED_SET_WAKEUP_TIME 0x0008
570#define EFI_RT_SUPPORTED_GET_VARIABLE 0x0010
571#define EFI_RT_SUPPORTED_GET_NEXT_VARIABLE_NAME 0x0020
572#define EFI_RT_SUPPORTED_SET_VARIABLE 0x0040
573#define EFI_RT_SUPPORTED_SET_VIRTUAL_ADDRESS_MAP 0x0080
574#define EFI_RT_SUPPORTED_CONVERT_POINTER 0x0100
575#define EFI_RT_SUPPORTED_GET_NEXT_HIGH_MONOTONIC_COUNT 0x0200
576#define EFI_RT_SUPPORTED_RESET_SYSTEM 0x0400
577#define EFI_RT_SUPPORTED_UPDATE_CAPSULE 0x0800
578#define EFI_RT_SUPPORTED_QUERY_CAPSULE_CAPABILITIES 0x1000
579#define EFI_RT_SUPPORTED_QUERY_VARIABLE_INFO 0x2000
580
581#define EFI_RT_SUPPORTED_ALL 0x3fff
582
583#define EFI_RT_SUPPORTED_TIME_SERVICES 0x000f
584#define EFI_RT_SUPPORTED_VARIABLE_SERVICES 0x0070
585
586extern struct mm_struct efi_mm;
587
588static inline int
589efi_guidcmp (efi_guid_t left, efi_guid_t right)
590{
591 return memcmp(&left, &right, sizeof (efi_guid_t));
592}
593
594static inline char *
595efi_guid_to_str(efi_guid_t *guid, char *out)
596{
597 sprintf(out, "%pUl", guid->b);
598 return out;
599}
600
601extern void efi_init (void);
602extern void *efi_get_pal_addr (void);
603extern void efi_map_pal_code (void);
604extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg);
605extern void efi_gettimeofday (struct timespec64 *ts);
606extern void efi_enter_virtual_mode (void);
607#ifdef CONFIG_X86
608extern efi_status_t efi_query_variable_store(u32 attributes,
609 unsigned long size,
610 bool nonblocking);
611#else
612
613static inline efi_status_t efi_query_variable_store(u32 attributes,
614 unsigned long size,
615 bool nonblocking)
616{
617 return EFI_SUCCESS;
618}
619#endif
620extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr);
621
622extern int __init efi_memmap_alloc(unsigned int num_entries,
623 struct efi_memory_map_data *data);
624extern void __efi_memmap_free(u64 phys, unsigned long size,
625 unsigned long flags);
626extern int __init efi_memmap_init_early(struct efi_memory_map_data *data);
627extern int __init efi_memmap_init_late(phys_addr_t addr, unsigned long size);
628extern void __init efi_memmap_unmap(void);
629extern int __init efi_memmap_install(struct efi_memory_map_data *data);
630extern int __init efi_memmap_split_count(efi_memory_desc_t *md,
631 struct range *range);
632extern void __init efi_memmap_insert(struct efi_memory_map *old_memmap,
633 void *buf, struct efi_mem_range *mem);
634
635#ifdef CONFIG_EFI_ESRT
636extern void __init efi_esrt_init(void);
637#else
638static inline void efi_esrt_init(void) { }
639#endif
640extern int efi_config_parse_tables(const efi_config_table_t *config_tables,
641 int count,
642 const efi_config_table_type_t *arch_tables);
643extern int efi_systab_check_header(const efi_table_hdr_t *systab_hdr,
644 int min_major_version);
645extern void efi_systab_report_header(const efi_table_hdr_t *systab_hdr,
646 unsigned long fw_vendor);
647extern u64 efi_get_iobase (void);
648extern int efi_mem_type(unsigned long phys_addr);
649extern u64 efi_mem_attributes (unsigned long phys_addr);
650extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size);
651extern int __init efi_uart_console_only (void);
652extern u64 efi_mem_desc_end(efi_memory_desc_t *md);
653extern int efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md);
654extern void efi_mem_reserve(phys_addr_t addr, u64 size);
655extern int efi_mem_reserve_persistent(phys_addr_t addr, u64 size);
656extern void efi_initialize_iomem_resources(struct resource *code_resource,
657 struct resource *data_resource, struct resource *bss_resource);
658extern u64 efi_get_fdt_params(struct efi_memory_map_data *data);
659extern struct kobject *efi_kobj;
660
661extern int efi_reboot_quirk_mode;
662extern bool efi_poweroff_required(void);
663
664#ifdef CONFIG_EFI_FAKE_MEMMAP
665extern void __init efi_fake_memmap(void);
666#else
667static inline void efi_fake_memmap(void) { }
668#endif
669
670extern unsigned long efi_mem_attr_table;
671
672
673
674
675
676
677
678
679typedef int (*efi_memattr_perm_setter)(struct mm_struct *, efi_memory_desc_t *);
680
681extern int efi_memattr_init(void);
682extern int efi_memattr_apply_permissions(struct mm_struct *mm,
683 efi_memattr_perm_setter fn);
684
685
686
687
688
689
690
691
692
693
694
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701
702
703
704#define efi_early_memdesc_ptr(map, desc_size, n) \
705 (efi_memory_desc_t *)((void *)(map) + ((n) * (desc_size)))
706
707
708#define for_each_efi_memory_desc_in_map(m, md) \
709 for ((md) = (m)->map; \
710 (md) && ((void *)(md) + (m)->desc_size) <= (m)->map_end; \
711 (md) = (void *)(md) + (m)->desc_size)
712
713
714
715
716
717
718
719#define for_each_efi_memory_desc(md) \
720 for_each_efi_memory_desc_in_map(&efi.memmap, md)
721
722
723
724
725
726char * __init efi_md_typeattr_format(char *buf, size_t size,
727 const efi_memory_desc_t *md);
728
729
730typedef void (*efi_element_handler_t)(const char *source,
731 const void *element_data,
732 size_t element_size);
733extern int __init parse_efi_signature_list(
734 const char *source,
735 const void *data, size_t size,
736 efi_element_handler_t (*get_handler_for_guid)(const efi_guid_t *));
737
738
739
740
741
742
743
744
745
746static inline int efi_range_is_wc(unsigned long start, unsigned long len)
747{
748 unsigned long i;
749
750 for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) {
751 unsigned long paddr = __pa(start + i);
752 if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC))
753 return 0;
754 }
755
756 return 1;
757}
758
759#ifdef CONFIG_EFI_PCDP
760extern int __init efi_setup_pcdp_console(char *);
761#endif
762
763
764
765
766
767#define EFI_BOOT 0
768#define EFI_CONFIG_TABLES 2
769#define EFI_RUNTIME_SERVICES 3
770#define EFI_MEMMAP 4
771#define EFI_64BIT 5
772#define EFI_PARAVIRT 6
773#define EFI_ARCH_1 7
774#define EFI_DBG 8
775#define EFI_NX_PE_DATA 9
776#define EFI_MEM_ATTR 10
777#define EFI_MEM_NO_SOFT_RESERVE 11
778#define EFI_PRESERVE_BS_REGIONS 12
779
780#ifdef CONFIG_EFI
781
782
783
784static inline bool efi_enabled(int feature)
785{
786 return test_bit(feature, &efi.flags) != 0;
787}
788extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused);
789
790bool __pure __efi_soft_reserve_enabled(void);
791
792static inline bool __pure efi_soft_reserve_enabled(void)
793{
794 return IS_ENABLED(CONFIG_EFI_SOFT_RESERVE)
795 && __efi_soft_reserve_enabled();
796}
797
798static inline bool efi_rt_services_supported(unsigned int mask)
799{
800 return (efi.runtime_supported_mask & mask) == mask;
801}
802#else
803static inline bool efi_enabled(int feature)
804{
805 return false;
806}
807static inline void
808efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {}
809
810static inline bool
811efi_capsule_pending(int *reset_type)
812{
813 return false;
814}
815
816static inline bool efi_soft_reserve_enabled(void)
817{
818 return false;
819}
820
821static inline bool efi_rt_services_supported(unsigned int mask)
822{
823 return false;
824}
825#endif
826
827extern int efi_status_to_err(efi_status_t status);
828
829
830
831
832#define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001
833#define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
834#define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004
835#define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008
836#define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010
837#define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
838#define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040
839
840#define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \
841 EFI_VARIABLE_BOOTSERVICE_ACCESS | \
842 EFI_VARIABLE_RUNTIME_ACCESS | \
843 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \
844 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \
845 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \
846 EFI_VARIABLE_APPEND_WRITE)
847
848
849
850
851#define EFI_VARIABLE_GUID_LEN UUID_STRING_LEN
852
853
854
855
856#define EFI_DEV_HW 0x01
857#define EFI_DEV_PCI 1
858#define EFI_DEV_PCCARD 2
859#define EFI_DEV_MEM_MAPPED 3
860#define EFI_DEV_VENDOR 4
861#define EFI_DEV_CONTROLLER 5
862#define EFI_DEV_ACPI 0x02
863#define EFI_DEV_BASIC_ACPI 1
864#define EFI_DEV_EXPANDED_ACPI 2
865#define EFI_DEV_MSG 0x03
866#define EFI_DEV_MSG_ATAPI 1
867#define EFI_DEV_MSG_SCSI 2
868#define EFI_DEV_MSG_FC 3
869#define EFI_DEV_MSG_1394 4
870#define EFI_DEV_MSG_USB 5
871#define EFI_DEV_MSG_USB_CLASS 15
872#define EFI_DEV_MSG_I20 6
873#define EFI_DEV_MSG_MAC 11
874#define EFI_DEV_MSG_IPV4 12
875#define EFI_DEV_MSG_IPV6 13
876#define EFI_DEV_MSG_INFINIBAND 9
877#define EFI_DEV_MSG_UART 14
878#define EFI_DEV_MSG_VENDOR 10
879#define EFI_DEV_MEDIA 0x04
880#define EFI_DEV_MEDIA_HARD_DRIVE 1
881#define EFI_DEV_MEDIA_CDROM 2
882#define EFI_DEV_MEDIA_VENDOR 3
883#define EFI_DEV_MEDIA_FILE 4
884#define EFI_DEV_MEDIA_PROTOCOL 5
885#define EFI_DEV_BIOS_BOOT 0x05
886#define EFI_DEV_END_PATH 0x7F
887#define EFI_DEV_END_PATH2 0xFF
888#define EFI_DEV_END_INSTANCE 0x01
889#define EFI_DEV_END_ENTIRE 0xFF
890
891struct efi_generic_dev_path {
892 u8 type;
893 u8 sub_type;
894 u16 length;
895} __packed;
896
897struct efi_acpi_dev_path {
898 struct efi_generic_dev_path header;
899 u32 hid;
900 u32 uid;
901} __packed;
902
903struct efi_pci_dev_path {
904 struct efi_generic_dev_path header;
905 u8 fn;
906 u8 dev;
907} __packed;
908
909struct efi_vendor_dev_path {
910 struct efi_generic_dev_path header;
911 efi_guid_t vendorguid;
912 u8 vendordata[];
913} __packed;
914
915struct efi_dev_path {
916 union {
917 struct efi_generic_dev_path header;
918 struct efi_acpi_dev_path acpi;
919 struct efi_pci_dev_path pci;
920 struct efi_vendor_dev_path vendor;
921 };
922} __packed;
923
924struct device *efi_get_device_by_path(const struct efi_dev_path **node,
925 size_t *len);
926
927static inline void memrange_efi_to_native(u64 *addr, u64 *npages)
928{
929 *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr);
930 *addr &= PAGE_MASK;
931}
932
933
934
935
936
937
938
939
940struct efivar_operations {
941 efi_get_variable_t *get_variable;
942 efi_get_next_variable_t *get_next_variable;
943 efi_set_variable_t *set_variable;
944 efi_set_variable_t *set_variable_nonblocking;
945 efi_query_variable_store_t *query_variable_store;
946};
947
948struct efivars {
949 struct kset *kset;
950 struct kobject *kobject;
951 const struct efivar_operations *ops;
952};
953
954
955
956
957
958
959
960
961#define EFI_VAR_NAME_LEN 1024
962
963struct efi_variable {
964 efi_char16_t VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)];
965 efi_guid_t VendorGuid;
966 unsigned long DataSize;
967 __u8 Data[1024];
968 efi_status_t Status;
969 __u32 Attributes;
970} __attribute__((packed));
971
972struct efivar_entry {
973 struct efi_variable var;
974 struct list_head list;
975 struct kobject kobj;
976 bool scanning;
977 bool deleting;
978};
979
980extern struct list_head efivar_sysfs_list;
981
982static inline void
983efivar_unregister(struct efivar_entry *var)
984{
985 kobject_put(&var->kobj);
986}
987
988int efivars_register(struct efivars *efivars,
989 const struct efivar_operations *ops,
990 struct kobject *kobject);
991int efivars_unregister(struct efivars *efivars);
992struct kobject *efivars_kobject(void);
993
994int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *),
995 void *data, bool duplicates, struct list_head *head);
996
997int efivar_entry_add(struct efivar_entry *entry, struct list_head *head);
998int efivar_entry_remove(struct efivar_entry *entry);
999
1000int __efivar_entry_delete(struct efivar_entry *entry);
1001int efivar_entry_delete(struct efivar_entry *entry);
1002
1003int efivar_entry_size(struct efivar_entry *entry, unsigned long *size);
1004int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
1005 unsigned long *size, void *data);
1006int efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
1007 unsigned long *size, void *data);
1008int efivar_entry_set(struct efivar_entry *entry, u32 attributes,
1009 unsigned long size, void *data, struct list_head *head);
1010int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes,
1011 unsigned long *size, void *data, bool *set);
1012int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes,
1013 bool block, unsigned long size, void *data);
1014
1015int efivar_entry_iter_begin(void);
1016void efivar_entry_iter_end(void);
1017
1018int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
1019 struct list_head *head, void *data,
1020 struct efivar_entry **prev);
1021int efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
1022 struct list_head *head, void *data);
1023
1024struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid,
1025 struct list_head *head, bool remove);
1026
1027bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data,
1028 unsigned long data_size);
1029bool efivar_variable_is_removable(efi_guid_t vendor, const char *name,
1030 size_t len);
1031
1032extern struct work_struct efivar_work;
1033void efivar_run_worker(void);
1034
1035#if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE)
1036int efivars_sysfs_init(void);
1037
1038#define EFIVARS_DATA_SIZE_MAX 1024
1039
1040#endif
1041extern bool efi_capsule_pending(int *reset_type);
1042
1043extern int efi_capsule_supported(efi_guid_t guid, u32 flags,
1044 size_t size, int *reset);
1045
1046extern int efi_capsule_update(efi_capsule_header_t *capsule,
1047 phys_addr_t *pages);
1048
1049#ifdef CONFIG_EFI_RUNTIME_MAP
1050int efi_runtime_map_init(struct kobject *);
1051int efi_get_runtime_map_size(void);
1052int efi_get_runtime_map_desc_size(void);
1053int efi_runtime_map_copy(void *buf, size_t bufsz);
1054#else
1055static inline int efi_runtime_map_init(struct kobject *kobj)
1056{
1057 return 0;
1058}
1059
1060static inline int efi_get_runtime_map_size(void)
1061{
1062 return 0;
1063}
1064
1065static inline int efi_get_runtime_map_desc_size(void)
1066{
1067 return 0;
1068}
1069
1070static inline int efi_runtime_map_copy(void *buf, size_t bufsz)
1071{
1072 return 0;
1073}
1074
1075#endif
1076
1077#ifdef CONFIG_EFI
1078extern bool efi_runtime_disabled(void);
1079#else
1080static inline bool efi_runtime_disabled(void) { return true; }
1081#endif
1082
1083extern void efi_call_virt_check_flags(unsigned long flags, const char *call);
1084extern unsigned long efi_call_virt_save_flags(void);
1085
1086enum efi_secureboot_mode {
1087 efi_secureboot_mode_unset,
1088 efi_secureboot_mode_unknown,
1089 efi_secureboot_mode_disabled,
1090 efi_secureboot_mode_enabled,
1091};
1092enum efi_secureboot_mode efi_get_secureboot(void);
1093
1094#ifdef CONFIG_RESET_ATTACK_MITIGATION
1095void efi_enable_reset_attack_mitigation(void);
1096#else
1097static inline void
1098efi_enable_reset_attack_mitigation(void) { }
1099#endif
1100
1101#ifdef CONFIG_EFI_EMBEDDED_FIRMWARE
1102void efi_check_for_embedded_firmwares(void);
1103#else
1104static inline void efi_check_for_embedded_firmwares(void) { }
1105#endif
1106
1107efi_status_t efi_random_get_seed(void);
1108
1109void efi_retrieve_tpm2_eventlog(void);
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
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1129
1130
1131#define efi_call_virt_pointer(p, f, args...) \
1132({ \
1133 efi_status_t __s; \
1134 unsigned long __flags; \
1135 \
1136 arch_efi_call_virt_setup(); \
1137 \
1138 __flags = efi_call_virt_save_flags(); \
1139 __s = arch_efi_call_virt(p, f, args); \
1140 efi_call_virt_check_flags(__flags, __stringify(f)); \
1141 \
1142 arch_efi_call_virt_teardown(); \
1143 \
1144 __s; \
1145})
1146
1147#define __efi_call_virt_pointer(p, f, args...) \
1148({ \
1149 unsigned long __flags; \
1150 \
1151 arch_efi_call_virt_setup(); \
1152 \
1153 __flags = efi_call_virt_save_flags(); \
1154 arch_efi_call_virt(p, f, args); \
1155 efi_call_virt_check_flags(__flags, __stringify(f)); \
1156 \
1157 arch_efi_call_virt_teardown(); \
1158})
1159
1160#define EFI_RANDOM_SEED_SIZE 64U
1161
1162struct linux_efi_random_seed {
1163 u32 size;
1164 u8 bits[];
1165};
1166
1167struct linux_efi_tpm_eventlog {
1168 u32 size;
1169 u32 final_events_preboot_size;
1170 u8 version;
1171 u8 log[];
1172};
1173
1174extern int efi_tpm_eventlog_init(void);
1175
1176struct efi_tcg2_final_events_table {
1177 u64 version;
1178 u64 nr_events;
1179 u8 events[];
1180};
1181extern int efi_tpm_final_log_size;
1182
1183extern unsigned long rci2_table_phys;
1184
1185
1186
1187
1188
1189
1190enum efi_rts_ids {
1191 EFI_NONE,
1192 EFI_GET_TIME,
1193 EFI_SET_TIME,
1194 EFI_GET_WAKEUP_TIME,
1195 EFI_SET_WAKEUP_TIME,
1196 EFI_GET_VARIABLE,
1197 EFI_GET_NEXT_VARIABLE,
1198 EFI_SET_VARIABLE,
1199 EFI_QUERY_VARIABLE_INFO,
1200 EFI_GET_NEXT_HIGH_MONO_COUNT,
1201 EFI_RESET_SYSTEM,
1202 EFI_UPDATE_CAPSULE,
1203 EFI_QUERY_CAPSULE_CAPS,
1204};
1205
1206
1207
1208
1209
1210
1211
1212
1213struct efi_runtime_work {
1214 void *arg1;
1215 void *arg2;
1216 void *arg3;
1217 void *arg4;
1218 void *arg5;
1219 efi_status_t status;
1220 struct work_struct work;
1221 enum efi_rts_ids efi_rts_id;
1222 struct completion efi_rts_comp;
1223};
1224
1225extern struct efi_runtime_work efi_rts_work;
1226
1227
1228extern struct workqueue_struct *efi_rts_wq;
1229
1230struct linux_efi_memreserve {
1231 int size;
1232 atomic_t count;
1233 phys_addr_t next;
1234 struct {
1235 phys_addr_t base;
1236 phys_addr_t size;
1237 } entry[0];
1238};
1239
1240#define EFI_MEMRESERVE_SIZE(count) (sizeof(struct linux_efi_memreserve) + \
1241 (count) * sizeof(((struct linux_efi_memreserve *)0)->entry[0]))
1242
1243#define EFI_MEMRESERVE_COUNT(size) (((size) - sizeof(struct linux_efi_memreserve)) \
1244 / sizeof(((struct linux_efi_memreserve *)0)->entry[0]))
1245
1246void __init efi_arch_mem_reserve(phys_addr_t addr, u64 size);
1247
1248char *efi_systab_show_arch(char *str);
1249
1250#endif
1251