Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Huang, Ying | 4a3575f | 2008-02-25 15:18:37 +0800 | [diff] [blame] | 21 | #include <linux/pfn.h> |
Matthew Garrett | 5ee9c19 | 2011-07-21 16:57:56 -0400 | [diff] [blame] | 22 | #include <linux/pstore.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | |
| 24 | #include <asm/page.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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))) |
Matthew Garrett | 5d9db88 | 2012-10-05 13:54:56 +0800 | [diff] [blame] | 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))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG-1))) |
Matthew Garrett | 5d9db88 | 2012-10-05 13:54:56 +0800 | [diff] [blame] | 37 | #define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | typedef struct { |
| 101 | u32 type; |
| 102 | u32 pad; |
| 103 | u64 phys_addr; |
| 104 | u64 virt_addr; |
| 105 | u64 num_pages; |
| 106 | u64 attribute; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | } efi_memory_desc_t; |
| 108 | |
Matthew Garrett | 3b37023 | 2011-06-06 15:36:25 -0400 | [diff] [blame] | 109 | typedef struct { |
| 110 | efi_guid_t guid; |
| 111 | u32 headersize; |
| 112 | u32 flags; |
| 113 | u32 imagesize; |
| 114 | } efi_capsule_header_t; |
| 115 | |
Matt Fleming | bb05e4b | 2011-11-15 12:57:03 +0000 | [diff] [blame] | 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 | |
Matthew Wilcox | e088a4a | 2009-05-22 13:49:49 -0700 | [diff] [blame] | 124 | typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | /* |
Matt Fleming | f30ca6b | 2011-11-15 12:56:32 +0000 | [diff] [blame] | 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 | |
Matthew Garrett | dd5fc85 | 2012-12-05 14:33:26 -0700 | [diff] [blame] | 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 | |
Matt Fleming | f30ca6b | 2011-11-15 12:56:32 +0000 | [diff] [blame] | 275 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | unsigned long get_time; |
| 291 | unsigned long set_time; |
| 292 | unsigned long get_wakeup_time; |
| 293 | unsigned long set_wakeup_time; |
| 294 | unsigned long set_virtual_address_map; |
| 295 | unsigned long convert_pointer; |
| 296 | unsigned long get_variable; |
| 297 | unsigned long get_next_variable; |
| 298 | unsigned long set_variable; |
| 299 | unsigned long get_next_high_mono_count; |
| 300 | unsigned long reset_system; |
Matthew Garrett | 3b37023 | 2011-06-06 15:36:25 -0400 | [diff] [blame] | 301 | unsigned long update_capsule; |
| 302 | unsigned long query_capsule_caps; |
| 303 | unsigned long query_variable_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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, |
Matthew Garrett | f7a2d73 | 2011-06-06 15:36:24 -0400 | [diff] [blame] | 316 | u32 attr, unsigned long data_size, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |
Matthew Garrett | 3b37023 | 2011-06-06 15:36:25 -0400 | [diff] [blame] | 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); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | |
| 337 | /* |
| 338 | * EFI Configuration Table and GUID definitions |
| 339 | */ |
| 340 | #define NULL_GUID \ |
| 341 | EFI_GUID( 0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 ) |
| 342 | |
| 343 | #define MPS_TABLE_GUID \ |
| 344 | EFI_GUID( 0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d ) |
| 345 | |
| 346 | #define ACPI_TABLE_GUID \ |
| 347 | EFI_GUID( 0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d ) |
| 348 | |
| 349 | #define ACPI_20_TABLE_GUID \ |
| 350 | EFI_GUID( 0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 ) |
| 351 | |
| 352 | #define SMBIOS_TABLE_GUID \ |
| 353 | EFI_GUID( 0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d ) |
| 354 | |
| 355 | #define SAL_SYSTEM_TABLE_GUID \ |
| 356 | EFI_GUID( 0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d ) |
| 357 | |
| 358 | #define HCDP_TABLE_GUID \ |
| 359 | EFI_GUID( 0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98 ) |
| 360 | |
| 361 | #define UGA_IO_PROTOCOL_GUID \ |
| 362 | EFI_GUID( 0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0xb, 0x7, 0xa2 ) |
| 363 | |
| 364 | #define EFI_GLOBAL_VARIABLE_GUID \ |
| 365 | EFI_GUID( 0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c ) |
| 366 | |
Russ Anderson | a50f70b | 2008-10-03 11:58:54 -0500 | [diff] [blame] | 367 | #define UV_SYSTEM_TABLE_GUID \ |
| 368 | EFI_GUID( 0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93 ) |
| 369 | |
Matthew Garrett | 5ee9c19 | 2011-07-21 16:57:56 -0400 | [diff] [blame] | 370 | #define LINUX_EFI_CRASH_GUID \ |
| 371 | EFI_GUID( 0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0 ) |
| 372 | |
Matt Fleming | 8e84f34 | 2011-11-15 12:56:50 +0000 | [diff] [blame] | 373 | #define LOADED_IMAGE_PROTOCOL_GUID \ |
| 374 | EFI_GUID( 0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b ) |
| 375 | |
Matt Fleming | 0f7c5d4 | 2011-11-15 12:57:16 +0000 | [diff] [blame] | 376 | #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \ |
| 377 | EFI_GUID( 0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a ) |
| 378 | |
| 379 | #define EFI_UGA_PROTOCOL_GUID \ |
| 380 | EFI_GUID( 0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39 ) |
| 381 | |
| 382 | #define EFI_PCI_IO_PROTOCOL_GUID \ |
| 383 | EFI_GUID( 0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x2, 0x9a ) |
| 384 | |
Matt Fleming | 55839d5 | 2011-08-11 10:28:06 +0100 | [diff] [blame] | 385 | #define EFI_FILE_INFO_ID \ |
| 386 | EFI_GUID( 0x9576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b ) |
| 387 | |
| 388 | #define EFI_FILE_SYSTEM_GUID \ |
| 389 | EFI_GUID( 0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b ) |
| 390 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | typedef struct { |
| 392 | efi_guid_t guid; |
Olof Johansson | 1adbfa3 | 2012-02-12 13:24:29 -0800 | [diff] [blame] | 393 | u64 table; |
| 394 | } efi_config_table_64_t; |
| 395 | |
| 396 | typedef struct { |
| 397 | efi_guid_t guid; |
| 398 | u32 table; |
| 399 | } efi_config_table_32_t; |
| 400 | |
| 401 | typedef struct { |
| 402 | efi_guid_t guid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | unsigned long table; |
| 404 | } efi_config_table_t; |
| 405 | |
| 406 | #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | |
Matthew Garrett | 3b37023 | 2011-06-06 15:36:25 -0400 | [diff] [blame] | 408 | #define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30)) |
| 409 | #define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20)) |
| 410 | #define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10)) |
| 411 | #define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00)) |
| 412 | #define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10)) |
| 413 | #define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02)) |
| 414 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | typedef struct { |
| 416 | efi_table_hdr_t hdr; |
Olof Johansson | 1adbfa3 | 2012-02-12 13:24:29 -0800 | [diff] [blame] | 417 | u64 fw_vendor; /* physical addr of CHAR16 vendor string */ |
| 418 | u32 fw_revision; |
| 419 | u32 __pad1; |
| 420 | u64 con_in_handle; |
| 421 | u64 con_in; |
| 422 | u64 con_out_handle; |
| 423 | u64 con_out; |
| 424 | u64 stderr_handle; |
| 425 | u64 stderr; |
| 426 | u64 runtime; |
| 427 | u64 boottime; |
| 428 | u32 nr_tables; |
| 429 | u32 __pad2; |
| 430 | u64 tables; |
| 431 | } efi_system_table_64_t; |
| 432 | |
| 433 | typedef struct { |
| 434 | efi_table_hdr_t hdr; |
| 435 | u32 fw_vendor; /* physical addr of CHAR16 vendor string */ |
| 436 | u32 fw_revision; |
| 437 | u32 con_in_handle; |
| 438 | u32 con_in; |
| 439 | u32 con_out_handle; |
| 440 | u32 con_out; |
| 441 | u32 stderr_handle; |
| 442 | u32 stderr; |
| 443 | u32 runtime; |
| 444 | u32 boottime; |
| 445 | u32 nr_tables; |
| 446 | u32 tables; |
| 447 | } efi_system_table_32_t; |
| 448 | |
| 449 | typedef struct { |
| 450 | efi_table_hdr_t hdr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | unsigned long fw_vendor; /* physical addr of CHAR16 vendor string */ |
| 452 | u32 fw_revision; |
| 453 | unsigned long con_in_handle; |
| 454 | unsigned long con_in; |
| 455 | unsigned long con_out_handle; |
| 456 | unsigned long con_out; |
| 457 | unsigned long stderr_handle; |
| 458 | unsigned long stderr; |
| 459 | efi_runtime_services_t *runtime; |
Matt Fleming | f30ca6b | 2011-11-15 12:56:32 +0000 | [diff] [blame] | 460 | efi_boot_services_t *boottime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | unsigned long nr_tables; |
| 462 | unsigned long tables; |
| 463 | } efi_system_table_t; |
| 464 | |
| 465 | struct efi_memory_map { |
Matt Tolentino | 7ae65fd | 2005-09-03 15:56:27 -0700 | [diff] [blame] | 466 | void *phys_map; |
| 467 | void *map; |
| 468 | void *map_end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | int nr_map; |
| 470 | unsigned long desc_version; |
Matt Tolentino | 7ae65fd | 2005-09-03 15:56:27 -0700 | [diff] [blame] | 471 | unsigned long desc_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | }; |
| 473 | |
Matt Fleming | 8e84f34 | 2011-11-15 12:56:50 +0000 | [diff] [blame] | 474 | typedef struct { |
| 475 | u32 revision; |
| 476 | void *parent_handle; |
| 477 | efi_system_table_t *system_table; |
| 478 | void *device_handle; |
| 479 | void *file_path; |
| 480 | void *reserved; |
| 481 | u32 load_options_size; |
| 482 | void *load_options; |
| 483 | void *image_base; |
| 484 | __aligned_u64 image_size; |
| 485 | unsigned int image_code_type; |
| 486 | unsigned int image_data_type; |
| 487 | unsigned long unload; |
| 488 | } efi_loaded_image_t; |
| 489 | |
Matt Fleming | 55839d5 | 2011-08-11 10:28:06 +0100 | [diff] [blame] | 490 | typedef struct { |
| 491 | u64 revision; |
| 492 | void *open_volume; |
| 493 | } efi_file_io_interface_t; |
| 494 | |
| 495 | typedef struct { |
| 496 | u64 size; |
| 497 | u64 file_size; |
| 498 | u64 phys_size; |
| 499 | efi_time_t create_time; |
| 500 | efi_time_t last_access_time; |
| 501 | efi_time_t modification_time; |
| 502 | __aligned_u64 attribute; |
| 503 | efi_char16_t filename[1]; |
| 504 | } efi_file_info_t; |
| 505 | |
| 506 | typedef struct { |
| 507 | u64 revision; |
| 508 | void *open; |
| 509 | void *close; |
| 510 | void *delete; |
| 511 | void *read; |
| 512 | void *write; |
| 513 | void *get_position; |
| 514 | void *set_position; |
| 515 | void *get_info; |
| 516 | void *set_info; |
| 517 | void *flush; |
| 518 | } efi_file_handle_t; |
| 519 | |
| 520 | #define EFI_FILE_MODE_READ 0x0000000000000001 |
| 521 | #define EFI_FILE_MODE_WRITE 0x0000000000000002 |
| 522 | #define EFI_FILE_MODE_CREATE 0x8000000000000000 |
| 523 | |
Bjorn Helgaas | b2c99e3 | 2006-03-26 01:37:08 -0800 | [diff] [blame] | 524 | #define EFI_INVALID_TABLE_ADDR (~0UL) |
| 525 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | /* |
| 527 | * All runtime access to EFI goes through this structure: |
| 528 | */ |
| 529 | extern struct efi { |
| 530 | efi_system_table_t *systab; /* EFI system table */ |
Matthew Garrett | 3b37023 | 2011-06-06 15:36:25 -0400 | [diff] [blame] | 531 | unsigned int runtime_version; /* Runtime services version */ |
Bjorn Helgaas | b2c99e3 | 2006-03-26 01:37:08 -0800 | [diff] [blame] | 532 | unsigned long mps; /* MPS table */ |
| 533 | unsigned long acpi; /* ACPI table (IA64 ext 0.71) */ |
| 534 | unsigned long acpi20; /* ACPI table (ACPI 2.0) */ |
| 535 | unsigned long smbios; /* SM BIOS table */ |
| 536 | unsigned long sal_systab; /* SAL system table */ |
| 537 | unsigned long boot_info; /* boot info table */ |
| 538 | unsigned long hcdp; /* HCDP table */ |
| 539 | unsigned long uga; /* UGA table */ |
Russ Anderson | a50f70b | 2008-10-03 11:58:54 -0500 | [diff] [blame] | 540 | unsigned long uv_systab; /* UV system table */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | efi_get_time_t *get_time; |
| 542 | efi_set_time_t *set_time; |
| 543 | efi_get_wakeup_time_t *get_wakeup_time; |
| 544 | efi_set_wakeup_time_t *set_wakeup_time; |
| 545 | efi_get_variable_t *get_variable; |
| 546 | efi_get_next_variable_t *get_next_variable; |
| 547 | efi_set_variable_t *set_variable; |
Matthew Garrett | 3b37023 | 2011-06-06 15:36:25 -0400 | [diff] [blame] | 548 | efi_query_variable_info_t *query_variable_info; |
| 549 | efi_update_capsule_t *update_capsule; |
| 550 | efi_query_capsule_caps_t *query_capsule_caps; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | efi_get_next_high_mono_count_t *get_next_high_mono_count; |
| 552 | efi_reset_system_t *reset_system; |
| 553 | efi_set_virtual_address_map_t *set_virtual_address_map; |
| 554 | } efi; |
| 555 | |
| 556 | static inline int |
| 557 | efi_guidcmp (efi_guid_t left, efi_guid_t right) |
| 558 | { |
| 559 | return memcmp(&left, &right, sizeof (efi_guid_t)); |
| 560 | } |
| 561 | |
| 562 | static inline char * |
| 563 | efi_guid_unparse(efi_guid_t *guid, char *out) |
| 564 | { |
Joe Perches | 925ede0bf | 2009-12-14 18:01:14 -0800 | [diff] [blame] | 565 | sprintf(out, "%pUl", guid->b); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | return out; |
| 567 | } |
| 568 | |
| 569 | extern void efi_init (void); |
| 570 | extern void *efi_get_pal_addr (void); |
| 571 | extern void efi_map_pal_code (void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg); |
| 573 | extern void efi_gettimeofday (struct timespec *ts); |
| 574 | extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */ |
Josh Triplett | 7851079 | 2012-09-28 17:55:44 -0700 | [diff] [blame] | 575 | #ifdef CONFIG_X86 |
Josh Triplett | 2223af3 | 2012-09-28 17:57:05 -0700 | [diff] [blame] | 576 | extern void efi_late_init(void); |
Josh Triplett | 7851079 | 2012-09-28 17:55:44 -0700 | [diff] [blame] | 577 | extern void efi_free_boot_services(void); |
| 578 | #else |
Josh Triplett | 2223af3 | 2012-09-28 17:57:05 -0700 | [diff] [blame] | 579 | static inline void efi_late_init(void) {} |
Josh Triplett | 7851079 | 2012-09-28 17:55:44 -0700 | [diff] [blame] | 580 | static inline void efi_free_boot_services(void) {} |
| 581 | #endif |
Josh Triplett | 7bc90e0 | 2012-09-28 17:56:08 -0700 | [diff] [blame] | 582 | extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | extern u64 efi_get_iobase (void); |
| 584 | extern u32 efi_mem_type (unsigned long phys_addr); |
| 585 | extern u64 efi_mem_attributes (unsigned long phys_addr); |
Bjorn Helgaas | 32e62c6 | 2006-05-05 17:19:50 -0600 | [diff] [blame] | 586 | extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | extern int __init efi_uart_console_only (void); |
| 588 | extern void efi_initialize_iomem_resources(struct resource *code_resource, |
Bernhard Walle | 00bf409 | 2007-10-21 16:42:01 -0700 | [diff] [blame] | 589 | struct resource *data_resource, struct resource *bss_resource); |
Linus Torvalds | 11520e5 | 2012-12-15 15:15:24 -0800 | [diff] [blame] | 590 | extern unsigned long efi_get_time(void); |
| 591 | extern int efi_set_rtc_mmss(unsigned long nowtime); |
Matthew Garrett | 916f676 | 2011-05-25 09:53:13 -0400 | [diff] [blame] | 592 | extern void efi_reserve_boot_services(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | extern struct efi_memory_map memmap; |
| 594 | |
| 595 | /** |
| 596 | * efi_range_is_wc - check the WC bit on an address range |
| 597 | * @start: starting kvirt address |
| 598 | * @len: length of range |
| 599 | * |
| 600 | * Consult the EFI memory map and make sure it's ok to set this range WC. |
| 601 | * Returns true or false. |
| 602 | */ |
| 603 | static inline int efi_range_is_wc(unsigned long start, unsigned long len) |
| 604 | { |
Jesper Juhl | 986a80d | 2005-06-16 15:14:00 -0700 | [diff] [blame] | 605 | unsigned long i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | |
| 607 | for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) { |
| 608 | unsigned long paddr = __pa(start + i); |
| 609 | if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC)) |
| 610 | return 0; |
| 611 | } |
| 612 | /* The range checked out */ |
| 613 | return 1; |
| 614 | } |
| 615 | |
| 616 | #ifdef CONFIG_EFI_PCDP |
| 617 | extern int __init efi_setup_pcdp_console(char *); |
| 618 | #endif |
| 619 | |
| 620 | /* |
Matt Fleming | 83e6818 | 2012-11-14 09:42:35 +0000 | [diff] [blame] | 621 | * We play games with efi_enabled so that the compiler will, if |
| 622 | * possible, remove EFI-related code altogether. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | */ |
Matt Fleming | 83e6818 | 2012-11-14 09:42:35 +0000 | [diff] [blame] | 624 | #define EFI_BOOT 0 /* Were we booted from EFI? */ |
| 625 | #define EFI_SYSTEM_TABLES 1 /* Can we use EFI system tables? */ |
| 626 | #define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */ |
| 627 | #define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */ |
| 628 | #define EFI_MEMMAP 4 /* Can we use EFI memory map? */ |
| 629 | #define EFI_64BIT 5 /* Is the firmware 64-bit? */ |
| 630 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | #ifdef CONFIG_EFI |
| 632 | # ifdef CONFIG_X86 |
Matt Fleming | 83e6818 | 2012-11-14 09:42:35 +0000 | [diff] [blame] | 633 | extern int efi_enabled(int facility); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | # else |
Matt Fleming | 83e6818 | 2012-11-14 09:42:35 +0000 | [diff] [blame] | 635 | static inline int efi_enabled(int facility) |
| 636 | { |
| 637 | return 1; |
| 638 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | # endif |
| 640 | #else |
Matt Fleming | 83e6818 | 2012-11-14 09:42:35 +0000 | [diff] [blame] | 641 | static inline int efi_enabled(int facility) |
| 642 | { |
| 643 | return 0; |
| 644 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | #endif |
| 646 | |
| 647 | /* |
| 648 | * Variable Attributes |
| 649 | */ |
| 650 | #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001 |
| 651 | #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002 |
| 652 | #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004 |
Matthew Garrett | 41b3254 | 2012-04-30 16:11:29 -0400 | [diff] [blame] | 653 | #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008 |
| 654 | #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010 |
| 655 | #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020 |
| 656 | #define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 657 | |
Matthew Garrett | 41b3254 | 2012-04-30 16:11:29 -0400 | [diff] [blame] | 658 | #define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \ |
| 659 | EFI_VARIABLE_BOOTSERVICE_ACCESS | \ |
| 660 | EFI_VARIABLE_RUNTIME_ACCESS | \ |
| 661 | EFI_VARIABLE_HARDWARE_ERROR_RECORD | \ |
| 662 | EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \ |
| 663 | EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \ |
| 664 | EFI_VARIABLE_APPEND_WRITE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | /* |
Matt Fleming | e2527a7 | 2011-11-15 12:57:26 +0000 | [diff] [blame] | 666 | * The type of search to perform when calling boottime->locate_handle |
| 667 | */ |
| 668 | #define EFI_LOCATE_ALL_HANDLES 0 |
| 669 | #define EFI_LOCATE_BY_REGISTER_NOTIFY 1 |
| 670 | #define EFI_LOCATE_BY_PROTOCOL 2 |
| 671 | |
| 672 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | * EFI Device Path information |
| 674 | */ |
| 675 | #define EFI_DEV_HW 0x01 |
| 676 | #define EFI_DEV_PCI 1 |
| 677 | #define EFI_DEV_PCCARD 2 |
| 678 | #define EFI_DEV_MEM_MAPPED 3 |
| 679 | #define EFI_DEV_VENDOR 4 |
| 680 | #define EFI_DEV_CONTROLLER 5 |
| 681 | #define EFI_DEV_ACPI 0x02 |
| 682 | #define EFI_DEV_BASIC_ACPI 1 |
| 683 | #define EFI_DEV_EXPANDED_ACPI 2 |
| 684 | #define EFI_DEV_MSG 0x03 |
| 685 | #define EFI_DEV_MSG_ATAPI 1 |
| 686 | #define EFI_DEV_MSG_SCSI 2 |
| 687 | #define EFI_DEV_MSG_FC 3 |
| 688 | #define EFI_DEV_MSG_1394 4 |
| 689 | #define EFI_DEV_MSG_USB 5 |
| 690 | #define EFI_DEV_MSG_USB_CLASS 15 |
| 691 | #define EFI_DEV_MSG_I20 6 |
| 692 | #define EFI_DEV_MSG_MAC 11 |
| 693 | #define EFI_DEV_MSG_IPV4 12 |
| 694 | #define EFI_DEV_MSG_IPV6 13 |
| 695 | #define EFI_DEV_MSG_INFINIBAND 9 |
| 696 | #define EFI_DEV_MSG_UART 14 |
| 697 | #define EFI_DEV_MSG_VENDOR 10 |
| 698 | #define EFI_DEV_MEDIA 0x04 |
| 699 | #define EFI_DEV_MEDIA_HARD_DRIVE 1 |
| 700 | #define EFI_DEV_MEDIA_CDROM 2 |
| 701 | #define EFI_DEV_MEDIA_VENDOR 3 |
| 702 | #define EFI_DEV_MEDIA_FILE 4 |
| 703 | #define EFI_DEV_MEDIA_PROTOCOL 5 |
| 704 | #define EFI_DEV_BIOS_BOOT 0x05 |
| 705 | #define EFI_DEV_END_PATH 0x7F |
| 706 | #define EFI_DEV_END_PATH2 0xFF |
| 707 | #define EFI_DEV_END_INSTANCE 0x01 |
| 708 | #define EFI_DEV_END_ENTIRE 0xFF |
| 709 | |
| 710 | struct efi_generic_dev_path { |
| 711 | u8 type; |
| 712 | u8 sub_type; |
| 713 | u16 length; |
| 714 | } __attribute ((packed)); |
| 715 | |
Huang, Ying | 4a3575f | 2008-02-25 15:18:37 +0800 | [diff] [blame] | 716 | static inline void memrange_efi_to_native(u64 *addr, u64 *npages) |
| 717 | { |
| 718 | *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr); |
| 719 | *addr &= PAGE_MASK; |
| 720 | } |
| 721 | |
Mike Waychison | 4fc756bd | 2011-03-11 17:43:27 -0800 | [diff] [blame] | 722 | #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE) |
| 723 | /* |
| 724 | * EFI Variable support. |
| 725 | * |
| 726 | * Different firmware drivers can expose their EFI-like variables using |
| 727 | * the following. |
| 728 | */ |
| 729 | |
| 730 | struct efivar_operations { |
| 731 | efi_get_variable_t *get_variable; |
| 732 | efi_get_next_variable_t *get_next_variable; |
| 733 | efi_set_variable_t *set_variable; |
Seiji Aguchi | d80a361 | 2012-11-14 20:25:37 +0000 | [diff] [blame] | 734 | efi_query_variable_info_t *query_variable_info; |
Mike Waychison | 4fc756bd | 2011-03-11 17:43:27 -0800 | [diff] [blame] | 735 | }; |
| 736 | |
| 737 | struct efivars { |
| 738 | /* |
| 739 | * ->lock protects two things: |
| 740 | * 1) ->list - adds, removals, reads, writes |
| 741 | * 2) ops.[gs]et_variable() calls. |
| 742 | * It must not be held when creating sysfs entries or calling kmalloc. |
| 743 | * ops.get_next_variable() is only called from register_efivars(), |
| 744 | * which is protected by the BKL, so that path is safe. |
| 745 | */ |
| 746 | spinlock_t lock; |
| 747 | struct list_head list; |
| 748 | struct kset *kset; |
Lee, Chun-Yi | 605e70c | 2012-10-05 13:54:56 +0800 | [diff] [blame] | 749 | struct kobject *kobject; |
Mike Waychison | 4fc756bd | 2011-03-11 17:43:27 -0800 | [diff] [blame] | 750 | struct bin_attribute *new_var, *del_var; |
| 751 | const struct efivar_operations *ops; |
Matthew Garrett | 5ee9c19 | 2011-07-21 16:57:56 -0400 | [diff] [blame] | 752 | struct efivar_entry *walk_entry; |
| 753 | struct pstore_info efi_pstore_info; |
Mike Waychison | 4fc756bd | 2011-03-11 17:43:27 -0800 | [diff] [blame] | 754 | }; |
| 755 | |
| 756 | int register_efivars(struct efivars *efivars, |
| 757 | const struct efivar_operations *ops, |
| 758 | struct kobject *parent_kobj); |
| 759 | void unregister_efivars(struct efivars *efivars); |
| 760 | |
| 761 | #endif /* CONFIG_EFI_VARS */ |
| 762 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | #endif /* _LINUX_EFI_H */ |