Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef _LINUX_EFI_H |
| 3 | #define _LINUX_EFI_H |
| 4 | |
| 5 | /* |
| 6 | * Extensible Firmware Interface |
| 7 | * Based on 'Extensible Firmware Interface Specification' version 0.9, April 30, 1999 |
| 8 | * |
| 9 | * Copyright (C) 1999 VA Linux Systems |
| 10 | * Copyright (C) 1999 Walt Drummond <drummond@valinux.com> |
| 11 | * Copyright (C) 1999, 2002-2003 Hewlett-Packard Co. |
| 12 | * David Mosberger-Tang <davidm@hpl.hp.com> |
| 13 | * Stephane Eranian <eranian@hpl.hp.com> |
| 14 | */ |
| 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))) |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 42 | #define EFI_TIMEOUT (18 | (1UL << (BITS_PER_LONG-1))) |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 43 | #define EFI_ABORTED (21 | (1UL << (BITS_PER_LONG-1))) |
| 44 | #define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1))) |
| 45 | |
| 46 | typedef unsigned long efi_status_t; |
| 47 | typedef u8 efi_bool_t; |
| 48 | typedef u16 efi_char16_t; /* UNICODE character */ |
| 49 | typedef u64 efi_physical_addr_t; |
| 50 | typedef void *efi_handle_t; |
| 51 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 52 | #if defined(CONFIG_X86_64) |
| 53 | #define __efiapi __attribute__((ms_abi)) |
| 54 | #elif defined(CONFIG_X86_32) |
| 55 | #define __efiapi __attribute__((regparm(0))) |
| 56 | #else |
| 57 | #define __efiapi |
| 58 | #endif |
| 59 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 60 | /* |
| 61 | * The UEFI spec and EDK2 reference implementation both define EFI_GUID as |
| 62 | * struct { u32 a; u16; b; u16 c; u8 d[8]; }; and so the implied alignment |
| 63 | * is 32 bits not 8 bits like our guid_t. In some cases (i.e., on 32-bit ARM), |
| 64 | * this means that firmware services invoked by the kernel may assume that |
| 65 | * efi_guid_t* arguments are 32-bit aligned, and use memory accessors that |
| 66 | * do not tolerate misalignment. So let's set the minimum alignment to 32 bits. |
| 67 | * |
| 68 | * Note that the UEFI spec as well as some comments in the EDK2 code base |
| 69 | * suggest that EFI_GUID should be 64-bit aligned, but this appears to be |
| 70 | * a mistake, given that no code seems to exist that actually enforces that |
| 71 | * or relies on it. |
| 72 | */ |
| 73 | typedef guid_t efi_guid_t __aligned(__alignof__(u32)); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 74 | |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 75 | #define EFI_GUID(a, b, c, d...) (efi_guid_t){ { \ |
| 76 | (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \ |
| 77 | (b) & 0xff, ((b) >> 8) & 0xff, \ |
| 78 | (c) & 0xff, ((c) >> 8) & 0xff, d } } |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 79 | |
| 80 | /* |
| 81 | * Generic EFI table header |
| 82 | */ |
| 83 | typedef struct { |
| 84 | u64 signature; |
| 85 | u32 revision; |
| 86 | u32 headersize; |
| 87 | u32 crc32; |
| 88 | u32 reserved; |
| 89 | } efi_table_hdr_t; |
| 90 | |
| 91 | /* |
| 92 | * Memory map descriptor: |
| 93 | */ |
| 94 | |
| 95 | /* Memory types: */ |
| 96 | #define EFI_RESERVED_TYPE 0 |
| 97 | #define EFI_LOADER_CODE 1 |
| 98 | #define EFI_LOADER_DATA 2 |
| 99 | #define EFI_BOOT_SERVICES_CODE 3 |
| 100 | #define EFI_BOOT_SERVICES_DATA 4 |
| 101 | #define EFI_RUNTIME_SERVICES_CODE 5 |
| 102 | #define EFI_RUNTIME_SERVICES_DATA 6 |
| 103 | #define EFI_CONVENTIONAL_MEMORY 7 |
| 104 | #define EFI_UNUSABLE_MEMORY 8 |
| 105 | #define EFI_ACPI_RECLAIM_MEMORY 9 |
| 106 | #define EFI_ACPI_MEMORY_NVS 10 |
| 107 | #define EFI_MEMORY_MAPPED_IO 11 |
| 108 | #define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12 |
| 109 | #define EFI_PAL_CODE 13 |
| 110 | #define EFI_PERSISTENT_MEMORY 14 |
| 111 | #define EFI_MAX_MEMORY_TYPE 15 |
| 112 | |
| 113 | /* Attribute values: */ |
| 114 | #define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */ |
| 115 | #define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */ |
| 116 | #define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */ |
| 117 | #define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */ |
| 118 | #define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */ |
| 119 | #define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */ |
| 120 | #define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */ |
| 121 | #define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */ |
| 122 | #define EFI_MEMORY_NV ((u64)0x0000000000008000ULL) /* non-volatile */ |
| 123 | #define EFI_MEMORY_MORE_RELIABLE \ |
| 124 | ((u64)0x0000000000010000ULL) /* higher reliability */ |
| 125 | #define EFI_MEMORY_RO ((u64)0x0000000000020000ULL) /* read-only */ |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 126 | #define EFI_MEMORY_SP ((u64)0x0000000000040000ULL) /* soft reserved */ |
| 127 | #define EFI_MEMORY_CPU_CRYPTO ((u64)0x0000000000080000ULL) /* supports encryption */ |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 128 | #define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */ |
| 129 | #define EFI_MEMORY_DESCRIPTOR_VERSION 1 |
| 130 | |
| 131 | #define EFI_PAGE_SHIFT 12 |
| 132 | #define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT) |
| 133 | #define EFI_PAGES_MAX (U64_MAX >> EFI_PAGE_SHIFT) |
| 134 | |
| 135 | typedef struct { |
| 136 | u32 type; |
| 137 | u32 pad; |
| 138 | u64 phys_addr; |
| 139 | u64 virt_addr; |
| 140 | u64 num_pages; |
| 141 | u64 attribute; |
| 142 | } efi_memory_desc_t; |
| 143 | |
| 144 | typedef struct { |
| 145 | efi_guid_t guid; |
| 146 | u32 headersize; |
| 147 | u32 flags; |
| 148 | u32 imagesize; |
| 149 | } efi_capsule_header_t; |
| 150 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 151 | /* |
| 152 | * EFI capsule flags |
| 153 | */ |
| 154 | #define EFI_CAPSULE_PERSIST_ACROSS_RESET 0x00010000 |
| 155 | #define EFI_CAPSULE_POPULATE_SYSTEM_TABLE 0x00020000 |
| 156 | #define EFI_CAPSULE_INITIATE_RESET 0x00040000 |
| 157 | |
| 158 | struct capsule_info { |
| 159 | efi_capsule_header_t header; |
| 160 | efi_capsule_header_t *capsule; |
| 161 | int reset_type; |
| 162 | long index; |
| 163 | size_t count; |
| 164 | size_t total_size; |
| 165 | struct page **pages; |
| 166 | phys_addr_t *phys; |
| 167 | size_t page_bytes_remain; |
| 168 | }; |
| 169 | |
Olivier Deprez | 92d4c21 | 2022-12-06 15:05:30 +0100 | [diff] [blame] | 170 | int efi_capsule_setup_info(struct capsule_info *cap_info, void *kbuff, |
| 171 | size_t hdr_bytes); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 172 | int __efi_capsule_setup_info(struct capsule_info *cap_info); |
| 173 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 174 | typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg); |
| 175 | |
| 176 | /* |
| 177 | * Types and defines for Time Services |
| 178 | */ |
| 179 | #define EFI_TIME_ADJUST_DAYLIGHT 0x1 |
| 180 | #define EFI_TIME_IN_DAYLIGHT 0x2 |
| 181 | #define EFI_UNSPECIFIED_TIMEZONE 0x07ff |
| 182 | |
| 183 | typedef struct { |
| 184 | u16 year; |
| 185 | u8 month; |
| 186 | u8 day; |
| 187 | u8 hour; |
| 188 | u8 minute; |
| 189 | u8 second; |
| 190 | u8 pad1; |
| 191 | u32 nanosecond; |
| 192 | s16 timezone; |
| 193 | u8 daylight; |
| 194 | u8 pad2; |
| 195 | } efi_time_t; |
| 196 | |
| 197 | typedef struct { |
| 198 | u32 resolution; |
| 199 | u32 accuracy; |
| 200 | u8 sets_to_zero; |
| 201 | } efi_time_cap_t; |
| 202 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 203 | typedef union efi_boot_services efi_boot_services_t; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 204 | |
| 205 | /* |
| 206 | * Types and defines for EFI ResetSystem |
| 207 | */ |
| 208 | #define EFI_RESET_COLD 0 |
| 209 | #define EFI_RESET_WARM 1 |
| 210 | #define EFI_RESET_SHUTDOWN 2 |
| 211 | |
| 212 | /* |
| 213 | * EFI Runtime Services table |
| 214 | */ |
| 215 | #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL) |
| 216 | #define EFI_RUNTIME_SERVICES_REVISION 0x00010000 |
| 217 | |
| 218 | typedef struct { |
| 219 | efi_table_hdr_t hdr; |
| 220 | u32 get_time; |
| 221 | u32 set_time; |
| 222 | u32 get_wakeup_time; |
| 223 | u32 set_wakeup_time; |
| 224 | u32 set_virtual_address_map; |
| 225 | u32 convert_pointer; |
| 226 | u32 get_variable; |
| 227 | u32 get_next_variable; |
| 228 | u32 set_variable; |
| 229 | u32 get_next_high_mono_count; |
| 230 | u32 reset_system; |
| 231 | u32 update_capsule; |
| 232 | u32 query_capsule_caps; |
| 233 | u32 query_variable_info; |
| 234 | } efi_runtime_services_32_t; |
| 235 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 236 | typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc); |
| 237 | typedef efi_status_t efi_set_time_t (efi_time_t *tm); |
| 238 | typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending, |
| 239 | efi_time_t *tm); |
| 240 | typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm); |
| 241 | typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr, |
| 242 | unsigned long *data_size, void *data); |
| 243 | typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name, |
| 244 | efi_guid_t *vendor); |
| 245 | typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor, |
| 246 | u32 attr, unsigned long data_size, |
| 247 | void *data); |
| 248 | typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count); |
| 249 | typedef void efi_reset_system_t (int reset_type, efi_status_t status, |
| 250 | unsigned long data_size, efi_char16_t *data); |
| 251 | typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size, |
| 252 | unsigned long descriptor_size, |
| 253 | u32 descriptor_version, |
| 254 | efi_memory_desc_t *virtual_map); |
| 255 | typedef efi_status_t efi_query_variable_info_t(u32 attr, |
| 256 | u64 *storage_space, |
| 257 | u64 *remaining_space, |
| 258 | u64 *max_variable_size); |
| 259 | typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules, |
| 260 | unsigned long count, |
| 261 | unsigned long sg_list); |
| 262 | typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules, |
| 263 | unsigned long count, |
| 264 | u64 *max_size, |
| 265 | int *reset_type); |
| 266 | typedef efi_status_t efi_query_variable_store_t(u32 attributes, |
| 267 | unsigned long size, |
| 268 | bool nonblocking); |
| 269 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 270 | typedef union { |
| 271 | struct { |
| 272 | efi_table_hdr_t hdr; |
| 273 | efi_get_time_t __efiapi *get_time; |
| 274 | efi_set_time_t __efiapi *set_time; |
| 275 | efi_get_wakeup_time_t __efiapi *get_wakeup_time; |
| 276 | efi_set_wakeup_time_t __efiapi *set_wakeup_time; |
| 277 | efi_set_virtual_address_map_t __efiapi *set_virtual_address_map; |
| 278 | void *convert_pointer; |
| 279 | efi_get_variable_t __efiapi *get_variable; |
| 280 | efi_get_next_variable_t __efiapi *get_next_variable; |
| 281 | efi_set_variable_t __efiapi *set_variable; |
| 282 | efi_get_next_high_mono_count_t __efiapi *get_next_high_mono_count; |
| 283 | efi_reset_system_t __efiapi *reset_system; |
| 284 | efi_update_capsule_t __efiapi *update_capsule; |
| 285 | efi_query_capsule_caps_t __efiapi *query_capsule_caps; |
| 286 | efi_query_variable_info_t __efiapi *query_variable_info; |
| 287 | }; |
| 288 | efi_runtime_services_32_t mixed_mode; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 289 | } efi_runtime_services_t; |
| 290 | |
| 291 | void efi_native_runtime_setup(void); |
| 292 | |
| 293 | /* |
| 294 | * EFI Configuration Table and GUID definitions |
| 295 | * |
| 296 | * These are all defined in a single line to make them easier to |
| 297 | * grep for and to see them at a glance - while still having a |
| 298 | * similar structure to the definitions in the spec. |
| 299 | * |
| 300 | * Here's how they are structured: |
| 301 | * |
| 302 | * GUID: 12345678-1234-1234-1234-123456789012 |
| 303 | * Spec: |
| 304 | * #define EFI_SOME_PROTOCOL_GUID \ |
| 305 | * {0x12345678,0x1234,0x1234,\ |
| 306 | * {0x12,0x34,0x12,0x34,0x56,0x78,0x90,0x12}} |
| 307 | * Here: |
| 308 | * #define SOME_PROTOCOL_GUID EFI_GUID(0x12345678, 0x1234, 0x1234, 0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12) |
| 309 | * ^ tabs ^extra space |
| 310 | * |
| 311 | * Note that the 'extra space' separates the values at the same place |
| 312 | * where the UEFI SPEC breaks the line. |
| 313 | */ |
| 314 | #define NULL_GUID EFI_GUID(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00) |
| 315 | #define MPS_TABLE_GUID EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) |
| 316 | #define ACPI_TABLE_GUID EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) |
| 317 | #define ACPI_20_TABLE_GUID EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81) |
| 318 | #define SMBIOS_TABLE_GUID EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) |
| 319 | #define SMBIOS3_TABLE_GUID EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c, 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94) |
| 320 | #define SAL_SYSTEM_TABLE_GUID EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) |
| 321 | #define HCDP_TABLE_GUID EFI_GUID(0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98) |
| 322 | #define UGA_IO_PROTOCOL_GUID EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2) |
| 323 | #define EFI_GLOBAL_VARIABLE_GUID EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c) |
| 324 | #define UV_SYSTEM_TABLE_GUID EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93) |
| 325 | #define LINUX_EFI_CRASH_GUID EFI_GUID(0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0) |
| 326 | #define LOADED_IMAGE_PROTOCOL_GUID EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) |
| 327 | #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a) |
| 328 | #define EFI_UGA_PROTOCOL_GUID EFI_GUID(0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39) |
| 329 | #define EFI_PCI_IO_PROTOCOL_GUID EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a) |
| 330 | #define EFI_FILE_INFO_ID EFI_GUID(0x09576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) |
| 331 | #define EFI_SYSTEM_RESOURCE_TABLE_GUID EFI_GUID(0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80) |
| 332 | #define EFI_FILE_SYSTEM_GUID EFI_GUID(0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) |
| 333 | #define DEVICE_TREE_GUID EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0) |
| 334 | #define EFI_PROPERTIES_TABLE_GUID EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5) |
| 335 | #define EFI_RNG_PROTOCOL_GUID EFI_GUID(0x3152bca5, 0xeade, 0x433d, 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44) |
| 336 | #define EFI_RNG_ALGORITHM_RAW EFI_GUID(0xe43176d7, 0xb6e8, 0x4827, 0xb7, 0x84, 0x7f, 0xfd, 0xc4, 0xb6, 0x85, 0x61) |
| 337 | #define EFI_MEMORY_ATTRIBUTES_TABLE_GUID EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20) |
| 338 | #define EFI_CONSOLE_OUT_DEVICE_GUID EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4, 0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) |
| 339 | #define APPLE_PROPERTIES_PROTOCOL_GUID EFI_GUID(0x91bd12fe, 0xf6c3, 0x44fb, 0xa5, 0xb7, 0x51, 0x22, 0xab, 0x30, 0x3a, 0xe0) |
| 340 | #define EFI_TCG2_PROTOCOL_GUID EFI_GUID(0x607f766c, 0x7455, 0x42be, 0x93, 0x0b, 0xe4, 0xd7, 0x6d, 0xb2, 0x72, 0x0f) |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 341 | #define EFI_LOAD_FILE_PROTOCOL_GUID EFI_GUID(0x56ec3091, 0x954c, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) |
| 342 | #define EFI_LOAD_FILE2_PROTOCOL_GUID EFI_GUID(0x4006c0c1, 0xfcb3, 0x403e, 0x99, 0x6d, 0x4a, 0x6c, 0x87, 0x24, 0xe0, 0x6d) |
| 343 | #define EFI_RT_PROPERTIES_TABLE_GUID EFI_GUID(0xeb66918a, 0x7eef, 0x402a, 0x84, 0x2e, 0x93, 0x1d, 0x21, 0xc3, 0x8a, 0xe9) |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 344 | |
| 345 | #define EFI_IMAGE_SECURITY_DATABASE_GUID EFI_GUID(0xd719b2cb, 0x3d3a, 0x4596, 0xa3, 0xbc, 0xda, 0xd0, 0x0e, 0x67, 0x65, 0x6f) |
| 346 | #define EFI_SHIM_LOCK_GUID EFI_GUID(0x605dab50, 0xe046, 0x4300, 0xab, 0xb6, 0x3d, 0xd8, 0x10, 0xdd, 0x8b, 0x23) |
| 347 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 348 | #define EFI_CERT_SHA256_GUID EFI_GUID(0xc1c41626, 0x504c, 0x4092, 0xac, 0xa9, 0x41, 0xf9, 0x36, 0x93, 0x43, 0x28) |
| 349 | #define EFI_CERT_X509_GUID EFI_GUID(0xa5c059a1, 0x94e4, 0x4aa7, 0x87, 0xb5, 0xab, 0x15, 0x5c, 0x2b, 0xf0, 0x72) |
| 350 | #define EFI_CERT_X509_SHA256_GUID EFI_GUID(0x3bd2a492, 0x96c0, 0x4079, 0xb4, 0x20, 0xfc, 0xf9, 0x8e, 0xf1, 0x03, 0xed) |
| 351 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 352 | /* |
| 353 | * This GUID is used to pass to the kernel proper the struct screen_info |
| 354 | * structure that was populated by the stub based on the GOP protocol instance |
| 355 | * associated with ConOut |
| 356 | */ |
| 357 | #define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, 0xb9, 0x0e, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95) |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 358 | #define LINUX_EFI_ARM_CPU_STATE_TABLE_GUID EFI_GUID(0xef79e4aa, 0x3c3d, 0x4989, 0xb9, 0x02, 0x07, 0xa9, 0x43, 0xe5, 0x50, 0xd2) |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 359 | #define LINUX_EFI_LOADER_ENTRY_GUID EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f) |
| 360 | #define LINUX_EFI_RANDOM_SEED_TABLE_GUID EFI_GUID(0x1ce1e5bc, 0x7ceb, 0x42f2, 0x81, 0xe5, 0x8a, 0xad, 0xf1, 0x80, 0xf5, 0x7b) |
| 361 | #define LINUX_EFI_TPM_EVENT_LOG_GUID EFI_GUID(0xb7799cb0, 0xeca2, 0x4943, 0x96, 0x67, 0x1f, 0xae, 0x07, 0xb7, 0x47, 0xfa) |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 362 | #define LINUX_EFI_TPM_FINAL_LOG_GUID EFI_GUID(0x1e2ed096, 0x30e2, 0x4254, 0xbd, 0x89, 0x86, 0x3b, 0xbe, 0xf8, 0x23, 0x25) |
| 363 | #define LINUX_EFI_MEMRESERVE_TABLE_GUID EFI_GUID(0x888eb0c6, 0x8ede, 0x4ff5, 0xa8, 0xf0, 0x9a, 0xee, 0x5c, 0xb9, 0x77, 0xc2) |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 364 | #define LINUX_EFI_INITRD_MEDIA_GUID EFI_GUID(0x5568e427, 0x68fc, 0x4f3d, 0xac, 0x74, 0xca, 0x55, 0x52, 0x31, 0xcc, 0x68) |
| 365 | #define LINUX_EFI_MOK_VARIABLE_TABLE_GUID EFI_GUID(0xc451ed2b, 0x9694, 0x45d3, 0xba, 0xba, 0xed, 0x9f, 0x89, 0x88, 0xa3, 0x89) |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 366 | |
| 367 | /* OEM GUIDs */ |
| 368 | #define DELLEMC_EFI_RCI2_TABLE_GUID EFI_GUID(0x2d9f28a2, 0xa886, 0x456a, 0x97, 0xa8, 0xf1, 0x1e, 0xf2, 0x4f, 0xf4, 0x55) |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 369 | |
| 370 | typedef struct { |
| 371 | efi_guid_t guid; |
| 372 | u64 table; |
| 373 | } efi_config_table_64_t; |
| 374 | |
| 375 | typedef struct { |
| 376 | efi_guid_t guid; |
| 377 | u32 table; |
| 378 | } efi_config_table_32_t; |
| 379 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 380 | typedef union { |
| 381 | struct { |
| 382 | efi_guid_t guid; |
| 383 | void *table; |
| 384 | }; |
| 385 | efi_config_table_32_t mixed_mode; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 386 | } efi_config_table_t; |
| 387 | |
| 388 | typedef struct { |
| 389 | efi_guid_t guid; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 390 | unsigned long *ptr; |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 391 | const char name[16]; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 392 | } efi_config_table_type_t; |
| 393 | |
| 394 | #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL) |
| 395 | |
| 396 | #define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30)) |
| 397 | #define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20)) |
| 398 | #define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10)) |
| 399 | #define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00)) |
| 400 | #define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10)) |
| 401 | #define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02)) |
| 402 | |
| 403 | typedef struct { |
| 404 | efi_table_hdr_t hdr; |
| 405 | u64 fw_vendor; /* physical addr of CHAR16 vendor string */ |
| 406 | u32 fw_revision; |
| 407 | u32 __pad1; |
| 408 | u64 con_in_handle; |
| 409 | u64 con_in; |
| 410 | u64 con_out_handle; |
| 411 | u64 con_out; |
| 412 | u64 stderr_handle; |
| 413 | u64 stderr; |
| 414 | u64 runtime; |
| 415 | u64 boottime; |
| 416 | u32 nr_tables; |
| 417 | u32 __pad2; |
| 418 | u64 tables; |
| 419 | } efi_system_table_64_t; |
| 420 | |
| 421 | typedef struct { |
| 422 | efi_table_hdr_t hdr; |
| 423 | u32 fw_vendor; /* physical addr of CHAR16 vendor string */ |
| 424 | u32 fw_revision; |
| 425 | u32 con_in_handle; |
| 426 | u32 con_in; |
| 427 | u32 con_out_handle; |
| 428 | u32 con_out; |
| 429 | u32 stderr_handle; |
| 430 | u32 stderr; |
| 431 | u32 runtime; |
| 432 | u32 boottime; |
| 433 | u32 nr_tables; |
| 434 | u32 tables; |
| 435 | } efi_system_table_32_t; |
| 436 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 437 | typedef union efi_simple_text_input_protocol efi_simple_text_input_protocol_t; |
| 438 | typedef union efi_simple_text_output_protocol efi_simple_text_output_protocol_t; |
| 439 | |
| 440 | typedef union { |
| 441 | struct { |
| 442 | efi_table_hdr_t hdr; |
| 443 | unsigned long fw_vendor; /* physical addr of CHAR16 vendor string */ |
| 444 | u32 fw_revision; |
| 445 | unsigned long con_in_handle; |
| 446 | efi_simple_text_input_protocol_t *con_in; |
| 447 | unsigned long con_out_handle; |
| 448 | efi_simple_text_output_protocol_t *con_out; |
| 449 | unsigned long stderr_handle; |
| 450 | unsigned long stderr; |
| 451 | efi_runtime_services_t *runtime; |
| 452 | efi_boot_services_t *boottime; |
| 453 | unsigned long nr_tables; |
| 454 | unsigned long tables; |
| 455 | }; |
| 456 | efi_system_table_32_t mixed_mode; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 457 | } efi_system_table_t; |
| 458 | |
| 459 | /* |
| 460 | * Architecture independent structure for describing a memory map for the |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 461 | * benefit of efi_memmap_init_early(), and for passing context between |
| 462 | * efi_memmap_alloc() and efi_memmap_install(). |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 463 | */ |
| 464 | struct efi_memory_map_data { |
| 465 | phys_addr_t phys_map; |
| 466 | unsigned long size; |
| 467 | unsigned long desc_version; |
| 468 | unsigned long desc_size; |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 469 | unsigned long flags; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 470 | }; |
| 471 | |
| 472 | struct efi_memory_map { |
| 473 | phys_addr_t phys_map; |
| 474 | void *map; |
| 475 | void *map_end; |
| 476 | int nr_map; |
| 477 | unsigned long desc_version; |
| 478 | unsigned long desc_size; |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 479 | #define EFI_MEMMAP_LATE (1UL << 0) |
| 480 | #define EFI_MEMMAP_MEMBLOCK (1UL << 1) |
| 481 | #define EFI_MEMMAP_SLAB (1UL << 2) |
| 482 | unsigned long flags; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 483 | }; |
| 484 | |
| 485 | struct efi_mem_range { |
| 486 | struct range range; |
| 487 | u64 attribute; |
| 488 | }; |
| 489 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 490 | typedef struct { |
| 491 | u32 version; |
| 492 | u32 length; |
| 493 | u64 memory_protection_attribute; |
| 494 | } efi_properties_table_t; |
| 495 | |
| 496 | #define EFI_PROPERTIES_TABLE_VERSION 0x00010000 |
| 497 | #define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA 0x1 |
| 498 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 499 | typedef struct { |
| 500 | u16 version; |
| 501 | u16 length; |
| 502 | u32 runtime_services_supported; |
| 503 | } efi_rt_properties_table_t; |
| 504 | |
| 505 | #define EFI_RT_PROPERTIES_TABLE_VERSION 0x1 |
| 506 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 507 | #define EFI_INVALID_TABLE_ADDR (~0UL) |
| 508 | |
| 509 | typedef struct { |
| 510 | u32 version; |
| 511 | u32 num_entries; |
| 512 | u32 desc_size; |
| 513 | u32 reserved; |
| 514 | efi_memory_desc_t entry[0]; |
| 515 | } efi_memory_attributes_table_t; |
| 516 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 517 | typedef struct { |
| 518 | efi_guid_t signature_owner; |
| 519 | u8 signature_data[]; |
| 520 | } efi_signature_data_t; |
| 521 | |
| 522 | typedef struct { |
| 523 | efi_guid_t signature_type; |
| 524 | u32 signature_list_size; |
| 525 | u32 signature_header_size; |
| 526 | u32 signature_size; |
| 527 | u8 signature_header[]; |
| 528 | /* efi_signature_data_t signatures[][] */ |
| 529 | } efi_signature_list_t; |
| 530 | |
| 531 | typedef u8 efi_sha256_hash_t[32]; |
| 532 | |
| 533 | typedef struct { |
| 534 | efi_sha256_hash_t to_be_signed_hash; |
| 535 | efi_time_t time_of_revocation; |
| 536 | } efi_cert_x509_sha256_t; |
| 537 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 538 | extern unsigned long __ro_after_init efi_rng_seed; /* RNG Seed table */ |
| 539 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 540 | /* |
| 541 | * All runtime access to EFI goes through this structure: |
| 542 | */ |
| 543 | extern struct efi { |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 544 | const efi_runtime_services_t *runtime; /* EFI runtime services table */ |
| 545 | unsigned int runtime_version; /* Runtime services version */ |
| 546 | unsigned int runtime_supported_mask; |
| 547 | |
| 548 | unsigned long acpi; /* ACPI table (IA64 ext 0.71) */ |
| 549 | unsigned long acpi20; /* ACPI table (ACPI 2.0) */ |
| 550 | unsigned long smbios; /* SMBIOS table (32 bit entry point) */ |
| 551 | unsigned long smbios3; /* SMBIOS table (64 bit entry point) */ |
| 552 | unsigned long esrt; /* ESRT table */ |
| 553 | unsigned long tpm_log; /* TPM2 Event Log table */ |
| 554 | unsigned long tpm_final_log; /* TPM2 Final Events Log table */ |
| 555 | unsigned long mokvar_table; /* MOK variable config table */ |
| 556 | |
| 557 | efi_get_time_t *get_time; |
| 558 | efi_set_time_t *set_time; |
| 559 | efi_get_wakeup_time_t *get_wakeup_time; |
| 560 | efi_set_wakeup_time_t *set_wakeup_time; |
| 561 | efi_get_variable_t *get_variable; |
| 562 | efi_get_next_variable_t *get_next_variable; |
| 563 | efi_set_variable_t *set_variable; |
| 564 | efi_set_variable_t *set_variable_nonblocking; |
| 565 | efi_query_variable_info_t *query_variable_info; |
| 566 | efi_query_variable_info_t *query_variable_info_nonblocking; |
| 567 | efi_update_capsule_t *update_capsule; |
| 568 | efi_query_capsule_caps_t *query_capsule_caps; |
| 569 | efi_get_next_high_mono_count_t *get_next_high_mono_count; |
| 570 | efi_reset_system_t *reset_system; |
| 571 | |
| 572 | struct efi_memory_map memmap; |
| 573 | unsigned long flags; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 574 | } efi; |
| 575 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 576 | #define EFI_RT_SUPPORTED_GET_TIME 0x0001 |
| 577 | #define EFI_RT_SUPPORTED_SET_TIME 0x0002 |
| 578 | #define EFI_RT_SUPPORTED_GET_WAKEUP_TIME 0x0004 |
| 579 | #define EFI_RT_SUPPORTED_SET_WAKEUP_TIME 0x0008 |
| 580 | #define EFI_RT_SUPPORTED_GET_VARIABLE 0x0010 |
| 581 | #define EFI_RT_SUPPORTED_GET_NEXT_VARIABLE_NAME 0x0020 |
| 582 | #define EFI_RT_SUPPORTED_SET_VARIABLE 0x0040 |
| 583 | #define EFI_RT_SUPPORTED_SET_VIRTUAL_ADDRESS_MAP 0x0080 |
| 584 | #define EFI_RT_SUPPORTED_CONVERT_POINTER 0x0100 |
| 585 | #define EFI_RT_SUPPORTED_GET_NEXT_HIGH_MONOTONIC_COUNT 0x0200 |
| 586 | #define EFI_RT_SUPPORTED_RESET_SYSTEM 0x0400 |
| 587 | #define EFI_RT_SUPPORTED_UPDATE_CAPSULE 0x0800 |
| 588 | #define EFI_RT_SUPPORTED_QUERY_CAPSULE_CAPABILITIES 0x1000 |
| 589 | #define EFI_RT_SUPPORTED_QUERY_VARIABLE_INFO 0x2000 |
| 590 | |
| 591 | #define EFI_RT_SUPPORTED_ALL 0x3fff |
| 592 | |
| 593 | #define EFI_RT_SUPPORTED_TIME_SERVICES 0x000f |
| 594 | #define EFI_RT_SUPPORTED_VARIABLE_SERVICES 0x0070 |
| 595 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 596 | extern struct mm_struct efi_mm; |
| 597 | |
| 598 | static inline int |
| 599 | efi_guidcmp (efi_guid_t left, efi_guid_t right) |
| 600 | { |
| 601 | return memcmp(&left, &right, sizeof (efi_guid_t)); |
| 602 | } |
| 603 | |
| 604 | static inline char * |
| 605 | efi_guid_to_str(efi_guid_t *guid, char *out) |
| 606 | { |
| 607 | sprintf(out, "%pUl", guid->b); |
| 608 | return out; |
| 609 | } |
| 610 | |
| 611 | extern void efi_init (void); |
| 612 | extern void *efi_get_pal_addr (void); |
| 613 | extern void efi_map_pal_code (void); |
| 614 | extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg); |
| 615 | extern void efi_gettimeofday (struct timespec64 *ts); |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 616 | #ifdef CONFIG_EFI |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 617 | extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */ |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 618 | #else |
| 619 | static inline void efi_enter_virtual_mode (void) {} |
| 620 | #endif |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 621 | #ifdef CONFIG_X86 |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 622 | extern efi_status_t efi_query_variable_store(u32 attributes, |
| 623 | unsigned long size, |
| 624 | bool nonblocking); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 625 | #else |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 626 | |
| 627 | static inline efi_status_t efi_query_variable_store(u32 attributes, |
| 628 | unsigned long size, |
| 629 | bool nonblocking) |
| 630 | { |
| 631 | return EFI_SUCCESS; |
| 632 | } |
| 633 | #endif |
| 634 | extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr); |
| 635 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 636 | extern int __init efi_memmap_alloc(unsigned int num_entries, |
| 637 | struct efi_memory_map_data *data); |
| 638 | extern void __efi_memmap_free(u64 phys, unsigned long size, |
| 639 | unsigned long flags); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 640 | extern int __init efi_memmap_init_early(struct efi_memory_map_data *data); |
| 641 | extern int __init efi_memmap_init_late(phys_addr_t addr, unsigned long size); |
| 642 | extern void __init efi_memmap_unmap(void); |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 643 | extern int __init efi_memmap_install(struct efi_memory_map_data *data); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 644 | extern int __init efi_memmap_split_count(efi_memory_desc_t *md, |
| 645 | struct range *range); |
| 646 | extern void __init efi_memmap_insert(struct efi_memory_map *old_memmap, |
| 647 | void *buf, struct efi_mem_range *mem); |
| 648 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 649 | #ifdef CONFIG_EFI_ESRT |
| 650 | extern void __init efi_esrt_init(void); |
| 651 | #else |
| 652 | static inline void efi_esrt_init(void) { } |
| 653 | #endif |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 654 | extern int efi_config_parse_tables(const efi_config_table_t *config_tables, |
| 655 | int count, |
| 656 | const efi_config_table_type_t *arch_tables); |
| 657 | extern int efi_systab_check_header(const efi_table_hdr_t *systab_hdr, |
| 658 | int min_major_version); |
| 659 | extern void efi_systab_report_header(const efi_table_hdr_t *systab_hdr, |
| 660 | unsigned long fw_vendor); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 661 | extern u64 efi_get_iobase (void); |
| 662 | extern int efi_mem_type(unsigned long phys_addr); |
| 663 | extern u64 efi_mem_attributes (unsigned long phys_addr); |
| 664 | extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size); |
| 665 | extern int __init efi_uart_console_only (void); |
| 666 | extern u64 efi_mem_desc_end(efi_memory_desc_t *md); |
| 667 | extern int efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md); |
| 668 | extern void efi_mem_reserve(phys_addr_t addr, u64 size); |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 669 | extern int efi_mem_reserve_persistent(phys_addr_t addr, u64 size); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 670 | extern void efi_initialize_iomem_resources(struct resource *code_resource, |
| 671 | struct resource *data_resource, struct resource *bss_resource); |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 672 | extern u64 efi_get_fdt_params(struct efi_memory_map_data *data); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 673 | extern struct kobject *efi_kobj; |
| 674 | |
| 675 | extern int efi_reboot_quirk_mode; |
| 676 | extern bool efi_poweroff_required(void); |
| 677 | |
| 678 | #ifdef CONFIG_EFI_FAKE_MEMMAP |
| 679 | extern void __init efi_fake_memmap(void); |
| 680 | #else |
| 681 | static inline void efi_fake_memmap(void) { } |
| 682 | #endif |
| 683 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 684 | extern unsigned long efi_mem_attr_table; |
| 685 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 686 | /* |
| 687 | * efi_memattr_perm_setter - arch specific callback function passed into |
| 688 | * efi_memattr_apply_permissions() that updates the |
| 689 | * mapping permissions described by the second |
| 690 | * argument in the page tables referred to by the |
| 691 | * first argument. |
| 692 | */ |
| 693 | typedef int (*efi_memattr_perm_setter)(struct mm_struct *, efi_memory_desc_t *); |
| 694 | |
| 695 | extern int efi_memattr_init(void); |
| 696 | extern int efi_memattr_apply_permissions(struct mm_struct *mm, |
| 697 | efi_memattr_perm_setter fn); |
| 698 | |
| 699 | /* |
| 700 | * efi_early_memdesc_ptr - get the n-th EFI memmap descriptor |
| 701 | * @map: the start of efi memmap |
| 702 | * @desc_size: the size of space for each EFI memmap descriptor |
| 703 | * @n: the index of efi memmap descriptor |
| 704 | * |
| 705 | * EFI boot service provides the GetMemoryMap() function to get a copy of the |
| 706 | * current memory map which is an array of memory descriptors, each of |
| 707 | * which describes a contiguous block of memory. It also gets the size of the |
| 708 | * map, and the size of each descriptor, etc. |
| 709 | * |
| 710 | * Note that per section 6.2 of UEFI Spec 2.6 Errata A, the returned size of |
| 711 | * each descriptor might not be equal to sizeof(efi_memory_memdesc_t), |
| 712 | * since efi_memory_memdesc_t may be extended in the future. Thus the OS |
| 713 | * MUST use the returned size of the descriptor to find the start of each |
| 714 | * efi_memory_memdesc_t in the memory map array. This should only be used |
| 715 | * during bootup since for_each_efi_memory_desc_xxx() is available after the |
| 716 | * kernel initializes the EFI subsystem to set up struct efi_memory_map. |
| 717 | */ |
| 718 | #define efi_early_memdesc_ptr(map, desc_size, n) \ |
| 719 | (efi_memory_desc_t *)((void *)(map) + ((n) * (desc_size))) |
| 720 | |
| 721 | /* Iterate through an efi_memory_map */ |
| 722 | #define for_each_efi_memory_desc_in_map(m, md) \ |
| 723 | for ((md) = (m)->map; \ |
| 724 | (md) && ((void *)(md) + (m)->desc_size) <= (m)->map_end; \ |
| 725 | (md) = (void *)(md) + (m)->desc_size) |
| 726 | |
| 727 | /** |
| 728 | * for_each_efi_memory_desc - iterate over descriptors in efi.memmap |
| 729 | * @md: the efi_memory_desc_t * iterator |
| 730 | * |
| 731 | * Once the loop finishes @md must not be accessed. |
| 732 | */ |
| 733 | #define for_each_efi_memory_desc(md) \ |
| 734 | for_each_efi_memory_desc_in_map(&efi.memmap, md) |
| 735 | |
| 736 | /* |
| 737 | * Format an EFI memory descriptor's type and attributes to a user-provided |
| 738 | * character buffer, as per snprintf(), and return the buffer. |
| 739 | */ |
| 740 | char * __init efi_md_typeattr_format(char *buf, size_t size, |
| 741 | const efi_memory_desc_t *md); |
| 742 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 743 | |
| 744 | typedef void (*efi_element_handler_t)(const char *source, |
| 745 | const void *element_data, |
| 746 | size_t element_size); |
| 747 | extern int __init parse_efi_signature_list( |
| 748 | const char *source, |
| 749 | const void *data, size_t size, |
| 750 | efi_element_handler_t (*get_handler_for_guid)(const efi_guid_t *)); |
| 751 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 752 | /** |
| 753 | * efi_range_is_wc - check the WC bit on an address range |
| 754 | * @start: starting kvirt address |
| 755 | * @len: length of range |
| 756 | * |
| 757 | * Consult the EFI memory map and make sure it's ok to set this range WC. |
| 758 | * Returns true or false. |
| 759 | */ |
| 760 | static inline int efi_range_is_wc(unsigned long start, unsigned long len) |
| 761 | { |
| 762 | unsigned long i; |
| 763 | |
| 764 | for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) { |
| 765 | unsigned long paddr = __pa(start + i); |
| 766 | if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC)) |
| 767 | return 0; |
| 768 | } |
| 769 | /* The range checked out */ |
| 770 | return 1; |
| 771 | } |
| 772 | |
| 773 | #ifdef CONFIG_EFI_PCDP |
| 774 | extern int __init efi_setup_pcdp_console(char *); |
| 775 | #endif |
| 776 | |
| 777 | /* |
| 778 | * We play games with efi_enabled so that the compiler will, if |
| 779 | * possible, remove EFI-related code altogether. |
| 780 | */ |
| 781 | #define EFI_BOOT 0 /* Were we booted from EFI? */ |
| 782 | #define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */ |
| 783 | #define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */ |
| 784 | #define EFI_MEMMAP 4 /* Can we use EFI memory map? */ |
| 785 | #define EFI_64BIT 5 /* Is the firmware 64-bit? */ |
| 786 | #define EFI_PARAVIRT 6 /* Access is via a paravirt interface */ |
| 787 | #define EFI_ARCH_1 7 /* First arch-specific bit */ |
| 788 | #define EFI_DBG 8 /* Print additional debug info at runtime */ |
| 789 | #define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */ |
| 790 | #define EFI_MEM_ATTR 10 /* Did firmware publish an EFI_MEMORY_ATTRIBUTES table? */ |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 791 | #define EFI_MEM_NO_SOFT_RESERVE 11 /* Is the kernel configured to ignore soft reservations? */ |
| 792 | #define EFI_PRESERVE_BS_REGIONS 12 /* Are EFI boot-services memory segments available? */ |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 793 | |
| 794 | #ifdef CONFIG_EFI |
| 795 | /* |
| 796 | * Test whether the above EFI_* bits are enabled. |
| 797 | */ |
| 798 | static inline bool efi_enabled(int feature) |
| 799 | { |
| 800 | return test_bit(feature, &efi.flags) != 0; |
| 801 | } |
| 802 | extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused); |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 803 | |
| 804 | bool __pure __efi_soft_reserve_enabled(void); |
| 805 | |
| 806 | static inline bool __pure efi_soft_reserve_enabled(void) |
| 807 | { |
| 808 | return IS_ENABLED(CONFIG_EFI_SOFT_RESERVE) |
| 809 | && __efi_soft_reserve_enabled(); |
| 810 | } |
| 811 | |
| 812 | static inline bool efi_rt_services_supported(unsigned int mask) |
| 813 | { |
| 814 | return (efi.runtime_supported_mask & mask) == mask; |
| 815 | } |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 816 | #else |
| 817 | static inline bool efi_enabled(int feature) |
| 818 | { |
| 819 | return false; |
| 820 | } |
| 821 | static inline void |
| 822 | efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {} |
| 823 | |
| 824 | static inline bool |
| 825 | efi_capsule_pending(int *reset_type) |
| 826 | { |
| 827 | return false; |
| 828 | } |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 829 | |
| 830 | static inline bool efi_soft_reserve_enabled(void) |
| 831 | { |
| 832 | return false; |
| 833 | } |
| 834 | |
| 835 | static inline bool efi_rt_services_supported(unsigned int mask) |
| 836 | { |
| 837 | return false; |
| 838 | } |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 839 | #endif |
| 840 | |
| 841 | extern int efi_status_to_err(efi_status_t status); |
| 842 | |
| 843 | /* |
| 844 | * Variable Attributes |
| 845 | */ |
| 846 | #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001 |
| 847 | #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002 |
| 848 | #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004 |
| 849 | #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008 |
| 850 | #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010 |
| 851 | #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020 |
| 852 | #define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040 |
| 853 | |
| 854 | #define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \ |
| 855 | EFI_VARIABLE_BOOTSERVICE_ACCESS | \ |
| 856 | EFI_VARIABLE_RUNTIME_ACCESS | \ |
| 857 | EFI_VARIABLE_HARDWARE_ERROR_RECORD | \ |
| 858 | EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \ |
| 859 | EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \ |
| 860 | EFI_VARIABLE_APPEND_WRITE) |
| 861 | /* |
| 862 | * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee")) |
| 863 | * not including trailing NUL |
| 864 | */ |
| 865 | #define EFI_VARIABLE_GUID_LEN UUID_STRING_LEN |
| 866 | |
| 867 | /* |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 868 | * EFI Device Path information |
| 869 | */ |
| 870 | #define EFI_DEV_HW 0x01 |
| 871 | #define EFI_DEV_PCI 1 |
| 872 | #define EFI_DEV_PCCARD 2 |
| 873 | #define EFI_DEV_MEM_MAPPED 3 |
| 874 | #define EFI_DEV_VENDOR 4 |
| 875 | #define EFI_DEV_CONTROLLER 5 |
| 876 | #define EFI_DEV_ACPI 0x02 |
| 877 | #define EFI_DEV_BASIC_ACPI 1 |
| 878 | #define EFI_DEV_EXPANDED_ACPI 2 |
| 879 | #define EFI_DEV_MSG 0x03 |
| 880 | #define EFI_DEV_MSG_ATAPI 1 |
| 881 | #define EFI_DEV_MSG_SCSI 2 |
| 882 | #define EFI_DEV_MSG_FC 3 |
| 883 | #define EFI_DEV_MSG_1394 4 |
| 884 | #define EFI_DEV_MSG_USB 5 |
| 885 | #define EFI_DEV_MSG_USB_CLASS 15 |
| 886 | #define EFI_DEV_MSG_I20 6 |
| 887 | #define EFI_DEV_MSG_MAC 11 |
| 888 | #define EFI_DEV_MSG_IPV4 12 |
| 889 | #define EFI_DEV_MSG_IPV6 13 |
| 890 | #define EFI_DEV_MSG_INFINIBAND 9 |
| 891 | #define EFI_DEV_MSG_UART 14 |
| 892 | #define EFI_DEV_MSG_VENDOR 10 |
| 893 | #define EFI_DEV_MEDIA 0x04 |
| 894 | #define EFI_DEV_MEDIA_HARD_DRIVE 1 |
| 895 | #define EFI_DEV_MEDIA_CDROM 2 |
| 896 | #define EFI_DEV_MEDIA_VENDOR 3 |
| 897 | #define EFI_DEV_MEDIA_FILE 4 |
| 898 | #define EFI_DEV_MEDIA_PROTOCOL 5 |
| 899 | #define EFI_DEV_BIOS_BOOT 0x05 |
| 900 | #define EFI_DEV_END_PATH 0x7F |
| 901 | #define EFI_DEV_END_PATH2 0xFF |
| 902 | #define EFI_DEV_END_INSTANCE 0x01 |
| 903 | #define EFI_DEV_END_ENTIRE 0xFF |
| 904 | |
| 905 | struct efi_generic_dev_path { |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 906 | u8 type; |
| 907 | u8 sub_type; |
| 908 | u16 length; |
| 909 | } __packed; |
| 910 | |
| 911 | struct efi_acpi_dev_path { |
| 912 | struct efi_generic_dev_path header; |
| 913 | u32 hid; |
| 914 | u32 uid; |
| 915 | } __packed; |
| 916 | |
| 917 | struct efi_pci_dev_path { |
| 918 | struct efi_generic_dev_path header; |
| 919 | u8 fn; |
| 920 | u8 dev; |
| 921 | } __packed; |
| 922 | |
| 923 | struct efi_vendor_dev_path { |
| 924 | struct efi_generic_dev_path header; |
| 925 | efi_guid_t vendorguid; |
| 926 | u8 vendordata[]; |
| 927 | } __packed; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 928 | |
| 929 | struct efi_dev_path { |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 930 | union { |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 931 | struct efi_generic_dev_path header; |
| 932 | struct efi_acpi_dev_path acpi; |
| 933 | struct efi_pci_dev_path pci; |
| 934 | struct efi_vendor_dev_path vendor; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 935 | }; |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 936 | } __packed; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 937 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 938 | struct device *efi_get_device_by_path(const struct efi_dev_path **node, |
| 939 | size_t *len); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 940 | |
| 941 | static inline void memrange_efi_to_native(u64 *addr, u64 *npages) |
| 942 | { |
| 943 | *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr); |
| 944 | *addr &= PAGE_MASK; |
| 945 | } |
| 946 | |
| 947 | /* |
| 948 | * EFI Variable support. |
| 949 | * |
| 950 | * Different firmware drivers can expose their EFI-like variables using |
| 951 | * the following. |
| 952 | */ |
| 953 | |
| 954 | struct efivar_operations { |
| 955 | efi_get_variable_t *get_variable; |
| 956 | efi_get_next_variable_t *get_next_variable; |
| 957 | efi_set_variable_t *set_variable; |
| 958 | efi_set_variable_t *set_variable_nonblocking; |
| 959 | efi_query_variable_store_t *query_variable_store; |
| 960 | }; |
| 961 | |
| 962 | struct efivars { |
| 963 | struct kset *kset; |
| 964 | struct kobject *kobject; |
| 965 | const struct efivar_operations *ops; |
| 966 | }; |
| 967 | |
| 968 | /* |
| 969 | * The maximum size of VariableName + Data = 1024 |
| 970 | * Therefore, it's reasonable to save that much |
| 971 | * space in each part of the structure, |
| 972 | * and we use a page for reading/writing. |
| 973 | */ |
| 974 | |
| 975 | #define EFI_VAR_NAME_LEN 1024 |
| 976 | |
| 977 | struct efi_variable { |
| 978 | efi_char16_t VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)]; |
| 979 | efi_guid_t VendorGuid; |
| 980 | unsigned long DataSize; |
| 981 | __u8 Data[1024]; |
| 982 | efi_status_t Status; |
| 983 | __u32 Attributes; |
| 984 | } __attribute__((packed)); |
| 985 | |
| 986 | struct efivar_entry { |
| 987 | struct efi_variable var; |
| 988 | struct list_head list; |
| 989 | struct kobject kobj; |
| 990 | bool scanning; |
| 991 | bool deleting; |
| 992 | }; |
| 993 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 994 | static inline void |
| 995 | efivar_unregister(struct efivar_entry *var) |
| 996 | { |
| 997 | kobject_put(&var->kobj); |
| 998 | } |
| 999 | |
| 1000 | int efivars_register(struct efivars *efivars, |
| 1001 | const struct efivar_operations *ops, |
| 1002 | struct kobject *kobject); |
| 1003 | int efivars_unregister(struct efivars *efivars); |
| 1004 | struct kobject *efivars_kobject(void); |
| 1005 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 1006 | int efivar_supports_writes(void); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1007 | int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *), |
| 1008 | void *data, bool duplicates, struct list_head *head); |
| 1009 | |
| 1010 | int efivar_entry_add(struct efivar_entry *entry, struct list_head *head); |
| 1011 | int efivar_entry_remove(struct efivar_entry *entry); |
| 1012 | |
| 1013 | int __efivar_entry_delete(struct efivar_entry *entry); |
| 1014 | int efivar_entry_delete(struct efivar_entry *entry); |
| 1015 | |
| 1016 | int efivar_entry_size(struct efivar_entry *entry, unsigned long *size); |
| 1017 | int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes, |
| 1018 | unsigned long *size, void *data); |
| 1019 | int efivar_entry_get(struct efivar_entry *entry, u32 *attributes, |
| 1020 | unsigned long *size, void *data); |
| 1021 | int efivar_entry_set(struct efivar_entry *entry, u32 attributes, |
| 1022 | unsigned long size, void *data, struct list_head *head); |
| 1023 | int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes, |
| 1024 | unsigned long *size, void *data, bool *set); |
| 1025 | int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes, |
| 1026 | bool block, unsigned long size, void *data); |
| 1027 | |
| 1028 | int efivar_entry_iter_begin(void); |
| 1029 | void efivar_entry_iter_end(void); |
| 1030 | |
| 1031 | int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *), |
| 1032 | struct list_head *head, void *data, |
| 1033 | struct efivar_entry **prev); |
| 1034 | int efivar_entry_iter(int (*func)(struct efivar_entry *, void *), |
| 1035 | struct list_head *head, void *data); |
| 1036 | |
| 1037 | struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid, |
| 1038 | struct list_head *head, bool remove); |
| 1039 | |
| 1040 | bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data, |
| 1041 | unsigned long data_size); |
| 1042 | bool efivar_variable_is_removable(efi_guid_t vendor, const char *name, |
| 1043 | size_t len); |
| 1044 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1045 | extern bool efi_capsule_pending(int *reset_type); |
| 1046 | |
| 1047 | extern int efi_capsule_supported(efi_guid_t guid, u32 flags, |
| 1048 | size_t size, int *reset); |
| 1049 | |
| 1050 | extern int efi_capsule_update(efi_capsule_header_t *capsule, |
| 1051 | phys_addr_t *pages); |
| 1052 | |
| 1053 | #ifdef CONFIG_EFI_RUNTIME_MAP |
| 1054 | int efi_runtime_map_init(struct kobject *); |
| 1055 | int efi_get_runtime_map_size(void); |
| 1056 | int efi_get_runtime_map_desc_size(void); |
| 1057 | int efi_runtime_map_copy(void *buf, size_t bufsz); |
| 1058 | #else |
| 1059 | static inline int efi_runtime_map_init(struct kobject *kobj) |
| 1060 | { |
| 1061 | return 0; |
| 1062 | } |
| 1063 | |
| 1064 | static inline int efi_get_runtime_map_size(void) |
| 1065 | { |
| 1066 | return 0; |
| 1067 | } |
| 1068 | |
| 1069 | static inline int efi_get_runtime_map_desc_size(void) |
| 1070 | { |
| 1071 | return 0; |
| 1072 | } |
| 1073 | |
| 1074 | static inline int efi_runtime_map_copy(void *buf, size_t bufsz) |
| 1075 | { |
| 1076 | return 0; |
| 1077 | } |
| 1078 | |
| 1079 | #endif |
| 1080 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 1081 | #ifdef CONFIG_EFI |
| 1082 | extern bool efi_runtime_disabled(void); |
| 1083 | #else |
| 1084 | static inline bool efi_runtime_disabled(void) { return true; } |
| 1085 | #endif |
| 1086 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1087 | extern void efi_call_virt_check_flags(unsigned long flags, const char *call); |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 1088 | extern unsigned long efi_call_virt_save_flags(void); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1089 | |
| 1090 | enum efi_secureboot_mode { |
| 1091 | efi_secureboot_mode_unset, |
| 1092 | efi_secureboot_mode_unknown, |
| 1093 | efi_secureboot_mode_disabled, |
| 1094 | efi_secureboot_mode_enabled, |
| 1095 | }; |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 1096 | enum efi_secureboot_mode efi_get_secureboot(void); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1097 | |
| 1098 | #ifdef CONFIG_RESET_ATTACK_MITIGATION |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 1099 | void efi_enable_reset_attack_mitigation(void); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1100 | #else |
| 1101 | static inline void |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 1102 | efi_enable_reset_attack_mitigation(void) { } |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1103 | #endif |
| 1104 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 1105 | #ifdef CONFIG_EFI_EMBEDDED_FIRMWARE |
| 1106 | void efi_check_for_embedded_firmwares(void); |
| 1107 | #else |
| 1108 | static inline void efi_check_for_embedded_firmwares(void) { } |
| 1109 | #endif |
| 1110 | |
| 1111 | efi_status_t efi_random_get_seed(void); |
| 1112 | |
| 1113 | void efi_retrieve_tpm2_eventlog(void); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1114 | |
| 1115 | /* |
| 1116 | * Arch code can implement the following three template macros, avoiding |
| 1117 | * reptition for the void/non-void return cases of {__,}efi_call_virt(): |
| 1118 | * |
| 1119 | * * arch_efi_call_virt_setup() |
| 1120 | * |
| 1121 | * Sets up the environment for the call (e.g. switching page tables, |
| 1122 | * allowing kernel-mode use of floating point, if required). |
| 1123 | * |
| 1124 | * * arch_efi_call_virt() |
| 1125 | * |
| 1126 | * Performs the call. The last expression in the macro must be the call |
| 1127 | * itself, allowing the logic to be shared by the void and non-void |
| 1128 | * cases. |
| 1129 | * |
| 1130 | * * arch_efi_call_virt_teardown() |
| 1131 | * |
| 1132 | * Restores the usual kernel environment once the call has returned. |
| 1133 | */ |
| 1134 | |
| 1135 | #define efi_call_virt_pointer(p, f, args...) \ |
| 1136 | ({ \ |
| 1137 | efi_status_t __s; \ |
| 1138 | unsigned long __flags; \ |
| 1139 | \ |
| 1140 | arch_efi_call_virt_setup(); \ |
| 1141 | \ |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 1142 | __flags = efi_call_virt_save_flags(); \ |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1143 | __s = arch_efi_call_virt(p, f, args); \ |
| 1144 | efi_call_virt_check_flags(__flags, __stringify(f)); \ |
| 1145 | \ |
| 1146 | arch_efi_call_virt_teardown(); \ |
| 1147 | \ |
| 1148 | __s; \ |
| 1149 | }) |
| 1150 | |
| 1151 | #define __efi_call_virt_pointer(p, f, args...) \ |
| 1152 | ({ \ |
| 1153 | unsigned long __flags; \ |
| 1154 | \ |
| 1155 | arch_efi_call_virt_setup(); \ |
| 1156 | \ |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 1157 | __flags = efi_call_virt_save_flags(); \ |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1158 | arch_efi_call_virt(p, f, args); \ |
| 1159 | efi_call_virt_check_flags(__flags, __stringify(f)); \ |
| 1160 | \ |
| 1161 | arch_efi_call_virt_teardown(); \ |
| 1162 | }) |
| 1163 | |
Olivier Deprez | 92d4c21 | 2022-12-06 15:05:30 +0100 | [diff] [blame] | 1164 | #define EFI_RANDOM_SEED_SIZE 32U // BLAKE2S_HASH_SIZE |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1165 | |
| 1166 | struct linux_efi_random_seed { |
| 1167 | u32 size; |
| 1168 | u8 bits[]; |
| 1169 | }; |
| 1170 | |
| 1171 | struct linux_efi_tpm_eventlog { |
| 1172 | u32 size; |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 1173 | u32 final_events_preboot_size; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1174 | u8 version; |
| 1175 | u8 log[]; |
| 1176 | }; |
| 1177 | |
| 1178 | extern int efi_tpm_eventlog_init(void); |
| 1179 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 1180 | struct efi_tcg2_final_events_table { |
| 1181 | u64 version; |
| 1182 | u64 nr_events; |
| 1183 | u8 events[]; |
| 1184 | }; |
| 1185 | extern int efi_tpm_final_log_size; |
| 1186 | |
| 1187 | extern unsigned long rci2_table_phys; |
| 1188 | |
| 1189 | /* |
| 1190 | * efi_runtime_service() function identifiers. |
| 1191 | * "NONE" is used by efi_recover_from_page_fault() to check if the page |
| 1192 | * fault happened while executing an efi runtime service. |
| 1193 | */ |
| 1194 | enum efi_rts_ids { |
| 1195 | EFI_NONE, |
| 1196 | EFI_GET_TIME, |
| 1197 | EFI_SET_TIME, |
| 1198 | EFI_GET_WAKEUP_TIME, |
| 1199 | EFI_SET_WAKEUP_TIME, |
| 1200 | EFI_GET_VARIABLE, |
| 1201 | EFI_GET_NEXT_VARIABLE, |
| 1202 | EFI_SET_VARIABLE, |
| 1203 | EFI_QUERY_VARIABLE_INFO, |
| 1204 | EFI_GET_NEXT_HIGH_MONO_COUNT, |
| 1205 | EFI_RESET_SYSTEM, |
| 1206 | EFI_UPDATE_CAPSULE, |
| 1207 | EFI_QUERY_CAPSULE_CAPS, |
| 1208 | }; |
| 1209 | |
| 1210 | /* |
| 1211 | * efi_runtime_work: Details of EFI Runtime Service work |
| 1212 | * @arg<1-5>: EFI Runtime Service function arguments |
| 1213 | * @status: Status of executing EFI Runtime Service |
| 1214 | * @efi_rts_id: EFI Runtime Service function identifier |
| 1215 | * @efi_rts_comp: Struct used for handling completions |
| 1216 | */ |
| 1217 | struct efi_runtime_work { |
| 1218 | void *arg1; |
| 1219 | void *arg2; |
| 1220 | void *arg3; |
| 1221 | void *arg4; |
| 1222 | void *arg5; |
| 1223 | efi_status_t status; |
| 1224 | struct work_struct work; |
| 1225 | enum efi_rts_ids efi_rts_id; |
| 1226 | struct completion efi_rts_comp; |
| 1227 | }; |
| 1228 | |
| 1229 | extern struct efi_runtime_work efi_rts_work; |
| 1230 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1231 | /* Workqueue to queue EFI Runtime Services */ |
| 1232 | extern struct workqueue_struct *efi_rts_wq; |
| 1233 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 1234 | struct linux_efi_memreserve { |
| 1235 | int size; // allocated size of the array |
| 1236 | atomic_t count; // number of entries used |
| 1237 | phys_addr_t next; // pa of next struct instance |
| 1238 | struct { |
| 1239 | phys_addr_t base; |
| 1240 | phys_addr_t size; |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 1241 | } entry[]; |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 1242 | }; |
| 1243 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 1244 | #define EFI_MEMRESERVE_COUNT(size) (((size) - sizeof(struct linux_efi_memreserve)) \ |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 1245 | / sizeof_field(struct linux_efi_memreserve, entry[0])) |
| 1246 | |
| 1247 | void __init efi_arch_mem_reserve(phys_addr_t addr, u64 size); |
| 1248 | |
| 1249 | char *efi_systab_show_arch(char *str); |
| 1250 | |
| 1251 | /* |
| 1252 | * The LINUX_EFI_MOK_VARIABLE_TABLE_GUID config table can be provided |
| 1253 | * to the kernel by an EFI boot loader. The table contains a packed |
| 1254 | * sequence of these entries, one for each named MOK variable. |
| 1255 | * The sequence is terminated by an entry with a completely NULL |
| 1256 | * name and 0 data size. |
| 1257 | */ |
| 1258 | struct efi_mokvar_table_entry { |
| 1259 | char name[256]; |
| 1260 | u64 data_size; |
| 1261 | u8 data[]; |
| 1262 | } __attribute((packed)); |
| 1263 | |
| 1264 | #ifdef CONFIG_LOAD_UEFI_KEYS |
| 1265 | extern void __init efi_mokvar_table_init(void); |
| 1266 | extern struct efi_mokvar_table_entry *efi_mokvar_entry_next( |
| 1267 | struct efi_mokvar_table_entry **mokvar_entry); |
| 1268 | extern struct efi_mokvar_table_entry *efi_mokvar_entry_find(const char *name); |
| 1269 | #else |
| 1270 | static inline void efi_mokvar_table_init(void) { } |
| 1271 | static inline struct efi_mokvar_table_entry *efi_mokvar_entry_next( |
| 1272 | struct efi_mokvar_table_entry **mokvar_entry) |
| 1273 | { |
| 1274 | return NULL; |
| 1275 | } |
| 1276 | static inline struct efi_mokvar_table_entry *efi_mokvar_entry_find( |
| 1277 | const char *name) |
| 1278 | { |
| 1279 | return NULL; |
| 1280 | } |
| 1281 | #endif |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 1282 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1283 | #endif /* _LINUX_EFI_H */ |