1#ifndef _LINUX_EFI_H
2#define _LINUX_EFI_H
3
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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
23#include <asm/page.h>
24#include <asm/system.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_FOUND (14 | (1UL << (BITS_PER_LONG-1)))
33
34typedef unsigned long efi_status_t;
35typedef u8 efi_bool_t;
36typedef u16 efi_char16_t;
37
38
39typedef struct {
40 u8 b[16];
41} efi_guid_t;
42
43#define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
44((efi_guid_t) \
45{{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
46 (b) & 0xff, ((b) >> 8) & 0xff, \
47 (c) & 0xff, ((c) >> 8) & 0xff, \
48 (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
49
50
51
52
53typedef struct {
54 u64 signature;
55 u32 revision;
56 u32 headersize;
57 u32 crc32;
58 u32 reserved;
59} efi_table_hdr_t;
60
61
62
63
64
65
66#define EFI_RESERVED_TYPE 0
67#define EFI_LOADER_CODE 1
68#define EFI_LOADER_DATA 2
69#define EFI_BOOT_SERVICES_CODE 3
70#define EFI_BOOT_SERVICES_DATA 4
71#define EFI_RUNTIME_SERVICES_CODE 5
72#define EFI_RUNTIME_SERVICES_DATA 6
73#define EFI_CONVENTIONAL_MEMORY 7
74#define EFI_UNUSABLE_MEMORY 8
75#define EFI_ACPI_RECLAIM_MEMORY 9
76#define EFI_ACPI_MEMORY_NVS 10
77#define EFI_MEMORY_MAPPED_IO 11
78#define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12
79#define EFI_PAL_CODE 13
80#define EFI_MAX_MEMORY_TYPE 14
81
82
83#define EFI_MEMORY_UC ((u64)0x0000000000000001ULL)
84#define EFI_MEMORY_WC ((u64)0x0000000000000002ULL)
85#define EFI_MEMORY_WT ((u64)0x0000000000000004ULL)
86#define EFI_MEMORY_WB ((u64)0x0000000000000008ULL)
87#define EFI_MEMORY_WP ((u64)0x0000000000001000ULL)
88#define EFI_MEMORY_RP ((u64)0x0000000000002000ULL)
89#define EFI_MEMORY_XP ((u64)0x0000000000004000ULL)
90#define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL)
91#define EFI_MEMORY_DESCRIPTOR_VERSION 1
92
93#define EFI_PAGE_SHIFT 12
94
95typedef struct {
96 u32 type;
97 u32 pad;
98 u64 phys_addr;
99 u64 virt_addr;
100 u64 num_pages;
101 u64 attribute;
102} efi_memory_desc_t;
103
104typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg);
105
106
107
108
109#define EFI_TIME_ADJUST_DAYLIGHT 0x1
110#define EFI_TIME_IN_DAYLIGHT 0x2
111#define EFI_UNSPECIFIED_TIMEZONE 0x07ff
112
113typedef struct {
114 u16 year;
115 u8 month;
116 u8 day;
117 u8 hour;
118 u8 minute;
119 u8 second;
120 u8 pad1;
121 u32 nanosecond;
122 s16 timezone;
123 u8 daylight;
124 u8 pad2;
125} efi_time_t;
126
127typedef struct {
128 u32 resolution;
129 u32 accuracy;
130 u8 sets_to_zero;
131} efi_time_cap_t;
132
133
134
135
136#define EFI_RESET_COLD 0
137#define EFI_RESET_WARM 1
138#define EFI_RESET_SHUTDOWN 2
139
140
141
142
143#define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL)
144#define EFI_RUNTIME_SERVICES_REVISION 0x00010000
145
146typedef struct {
147 efi_table_hdr_t hdr;
148 unsigned long get_time;
149 unsigned long set_time;
150 unsigned long get_wakeup_time;
151 unsigned long set_wakeup_time;
152 unsigned long set_virtual_address_map;
153 unsigned long convert_pointer;
154 unsigned long get_variable;
155 unsigned long get_next_variable;
156 unsigned long set_variable;
157 unsigned long get_next_high_mono_count;
158 unsigned long reset_system;
159} efi_runtime_services_t;
160
161typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc);
162typedef efi_status_t efi_set_time_t (efi_time_t *tm);
163typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending,
164 efi_time_t *tm);
165typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm);
166typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr,
167 unsigned long *data_size, void *data);
168typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name,
169 efi_guid_t *vendor);
170typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor,
171 unsigned long attr, unsigned long data_size,
172 void *data);
173typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count);
174typedef void efi_reset_system_t (int reset_type, efi_status_t status,
175 unsigned long data_size, efi_char16_t *data);
176typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size,
177 unsigned long descriptor_size,
178 u32 descriptor_version,
179 efi_memory_desc_t *virtual_map);
180
181
182
183
184#define NULL_GUID \
185 EFI_GUID( 0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 )
186
187#define MPS_TABLE_GUID \
188 EFI_GUID( 0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
189
190#define ACPI_TABLE_GUID \
191 EFI_GUID( 0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
192
193#define ACPI_20_TABLE_GUID \
194 EFI_GUID( 0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 )
195
196#define SMBIOS_TABLE_GUID \
197 EFI_GUID( 0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
198
199#define SAL_SYSTEM_TABLE_GUID \
200 EFI_GUID( 0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
201
202#define HCDP_TABLE_GUID \
203 EFI_GUID( 0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98 )
204
205#define UGA_IO_PROTOCOL_GUID \
206 EFI_GUID( 0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0xb, 0x7, 0xa2 )
207
208#define EFI_GLOBAL_VARIABLE_GUID \
209 EFI_GUID( 0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c )
210
211#define UV_SYSTEM_TABLE_GUID \
212 EFI_GUID( 0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93 )
213
214typedef struct {
215 efi_guid_t guid;
216 unsigned long table;
217} efi_config_table_t;
218
219#define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
220
221typedef struct {
222 efi_table_hdr_t hdr;
223 unsigned long fw_vendor;
224 u32 fw_revision;
225 unsigned long con_in_handle;
226 unsigned long con_in;
227 unsigned long con_out_handle;
228 unsigned long con_out;
229 unsigned long stderr_handle;
230 unsigned long stderr;
231 efi_runtime_services_t *runtime;
232 unsigned long boottime;
233 unsigned long nr_tables;
234 unsigned long tables;
235} efi_system_table_t;
236
237struct efi_memory_map {
238 void *phys_map;
239 void *map;
240 void *map_end;
241 int nr_map;
242 unsigned long desc_version;
243 unsigned long desc_size;
244};
245
246#define EFI_INVALID_TABLE_ADDR (~0UL)
247
248
249
250
251extern struct efi {
252 efi_system_table_t *systab;
253 unsigned long mps;
254 unsigned long acpi;
255 unsigned long acpi20;
256 unsigned long smbios;
257 unsigned long sal_systab;
258 unsigned long boot_info;
259 unsigned long hcdp;
260 unsigned long uga;
261 unsigned long uv_systab;
262 efi_get_time_t *get_time;
263 efi_set_time_t *set_time;
264 efi_get_wakeup_time_t *get_wakeup_time;
265 efi_set_wakeup_time_t *set_wakeup_time;
266 efi_get_variable_t *get_variable;
267 efi_get_next_variable_t *get_next_variable;
268 efi_set_variable_t *set_variable;
269 efi_get_next_high_mono_count_t *get_next_high_mono_count;
270 efi_reset_system_t *reset_system;
271 efi_set_virtual_address_map_t *set_virtual_address_map;
272} efi;
273
274static inline int
275efi_guidcmp (efi_guid_t left, efi_guid_t right)
276{
277 return memcmp(&left, &right, sizeof (efi_guid_t));
278}
279
280static inline char *
281efi_guid_unparse(efi_guid_t *guid, char *out)
282{
283 sprintf(out, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
284 guid->b[3], guid->b[2], guid->b[1], guid->b[0],
285 guid->b[5], guid->b[4], guid->b[7], guid->b[6],
286 guid->b[8], guid->b[9], guid->b[10], guid->b[11],
287 guid->b[12], guid->b[13], guid->b[14], guid->b[15]);
288 return out;
289}
290
291extern void efi_init (void);
292extern void *efi_get_pal_addr (void);
293extern void efi_map_pal_code (void);
294extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg);
295extern void efi_gettimeofday (struct timespec *ts);
296extern void efi_enter_virtual_mode (void);
297extern u64 efi_get_iobase (void);
298extern u32 efi_mem_type (unsigned long phys_addr);
299extern u64 efi_mem_attributes (unsigned long phys_addr);
300extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size);
301extern int __init efi_uart_console_only (void);
302extern void efi_initialize_iomem_resources(struct resource *code_resource,
303 struct resource *data_resource, struct resource *bss_resource);
304extern unsigned long efi_get_time(void);
305extern int efi_set_rtc_mmss(unsigned long nowtime);
306extern struct efi_memory_map memmap;
307
308
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310
311
312
313
314
315
316static inline int efi_range_is_wc(unsigned long start, unsigned long len)
317{
318 unsigned long i;
319
320 for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) {
321 unsigned long paddr = __pa(start + i);
322 if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC))
323 return 0;
324 }
325
326 return 1;
327}
328
329#ifdef CONFIG_EFI_PCDP
330extern int __init efi_setup_pcdp_console(char *);
331#endif
332
333
334
335
336
337#ifdef CONFIG_EFI
338# ifdef CONFIG_X86
339 extern int efi_enabled;
340# else
341# define efi_enabled 1
342# endif
343#else
344# define efi_enabled 0
345#endif
346
347
348
349
350#define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001
351#define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
352#define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004
353
354
355
356
357#define EFI_DEV_HW 0x01
358#define EFI_DEV_PCI 1
359#define EFI_DEV_PCCARD 2
360#define EFI_DEV_MEM_MAPPED 3
361#define EFI_DEV_VENDOR 4
362#define EFI_DEV_CONTROLLER 5
363#define EFI_DEV_ACPI 0x02
364#define EFI_DEV_BASIC_ACPI 1
365#define EFI_DEV_EXPANDED_ACPI 2
366#define EFI_DEV_MSG 0x03
367#define EFI_DEV_MSG_ATAPI 1
368#define EFI_DEV_MSG_SCSI 2
369#define EFI_DEV_MSG_FC 3
370#define EFI_DEV_MSG_1394 4
371#define EFI_DEV_MSG_USB 5
372#define EFI_DEV_MSG_USB_CLASS 15
373#define EFI_DEV_MSG_I20 6
374#define EFI_DEV_MSG_MAC 11
375#define EFI_DEV_MSG_IPV4 12
376#define EFI_DEV_MSG_IPV6 13
377#define EFI_DEV_MSG_INFINIBAND 9
378#define EFI_DEV_MSG_UART 14
379#define EFI_DEV_MSG_VENDOR 10
380#define EFI_DEV_MEDIA 0x04
381#define EFI_DEV_MEDIA_HARD_DRIVE 1
382#define EFI_DEV_MEDIA_CDROM 2
383#define EFI_DEV_MEDIA_VENDOR 3
384#define EFI_DEV_MEDIA_FILE 4
385#define EFI_DEV_MEDIA_PROTOCOL 5
386#define EFI_DEV_BIOS_BOOT 0x05
387#define EFI_DEV_END_PATH 0x7F
388#define EFI_DEV_END_PATH2 0xFF
389#define EFI_DEV_END_INSTANCE 0x01
390#define EFI_DEV_END_ENTIRE 0xFF
391
392struct efi_generic_dev_path {
393 u8 type;
394 u8 sub_type;
395 u16 length;
396} __attribute ((packed));
397
398static inline void memrange_efi_to_native(u64 *addr, u64 *npages)
399{
400 *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr);
401 *addr &= PAGE_MASK;
402}
403
404#endif
405
