1 /** @file 2 The device path protocol as defined in UEFI 2.0. 3 4 The device path represents a programatic path to a device. It's the view 5 from a software point of view. It also must persist from boot to boot, so 6 it can not contain things like PCI bus numbers that change from boot to boot. 7 8 Copyright (c) 2006 - 2008, Intel Corporation 9 All rights reserved. This program and the accompanying materials 10 are licensed and made available under the terms and conditions of the BSD License 11 which accompanies this distribution. The full text of the license may be found at 12 http://opensource.org/licenses/bsd-license.php 13 14 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 15 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 16 17 **/ 18 19 #ifndef __EFI_DEVICE_PATH_PROTOCOL_H__ 20 #define __EFI_DEVICE_PATH_PROTOCOL_H__ 21 22 #include <gpxe/efi/Guid/PcAnsi.h> 23 24 /// 25 /// Device Path protocol 26 /// 27 #define EFI_DEVICE_PATH_PROTOCOL_GUID \ 28 { \ 29 0x9576e91, 0x6d3f, 0x11d2, {0x8e, 0x39, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b } \ 30 } 31 32 // 33 // Protocol GUID defined in EFI1.1. 34 // 35 36 /// 37 /// Device Path information 38 /// 39 #define DEVICE_PATH_PROTOCOL EFI_DEVICE_PATH_PROTOCOL_GUID 40 41 #pragma pack(1) 42 43 /** 44 This protocol can be used on any device handle to obtain generic path/location 45 information concerning the physical device or logical device. If the handle does 46 not logically map to a physical device, the handle may not necessarily support 47 the device path protocol. The device path describes the location of the device 48 the handle is for. The size of the Device Path can be determined from the structures 49 that make up the Device Path. 50 **/ 51 typedef struct { 52 UINT8 Type; ///< 0x01 Hardware Device Path 53 ///< 0x02 ACPI Device Path 54 ///< 0x03 Messaging Device Path 55 ///< 0x04 Media Device Path 56 ///< 0x05 BIOS Boot Specification Device Path 57 ///< 0x7F End of Hardware Device Path 58 59 UINT8 SubType; ///< Varies by Type 60 ///< 0xFF End Entire Device Path, or 61 ///< 0x01 End This Instance of a Device Path and start a new 62 ///< Device Path 63 64 UINT8 Length[2]; ///< Specific Device Path data. Type and Sub-Type define 65 ///< type of data. Size of data is included in Length. 66 67 } EFI_DEVICE_PATH_PROTOCOL; 68 69 /// 70 /// For backward-compatible with EFI1.1. 71 /// 72 typedef EFI_DEVICE_PATH_PROTOCOL EFI_DEVICE_PATH; 73 74 /// 75 /// Hardware Device Paths 76 /// 77 #define HARDWARE_DEVICE_PATH 0x01 78 79 #define HW_PCI_DP 0x01 80 typedef struct { 81 EFI_DEVICE_PATH_PROTOCOL Header; 82 UINT8 Function; 83 UINT8 Device; 84 } PCI_DEVICE_PATH; 85 86 #define HW_PCCARD_DP 0x02 87 typedef struct { 88 EFI_DEVICE_PATH_PROTOCOL Header; 89 UINT8 FunctionNumber; 90 } PCCARD_DEVICE_PATH; 91 92 #define HW_MEMMAP_DP 0x03 93 typedef struct { 94 EFI_DEVICE_PATH_PROTOCOL Header; 95 UINT32 MemoryType; 96 EFI_PHYSICAL_ADDRESS StartingAddress; 97 EFI_PHYSICAL_ADDRESS EndingAddress; 98 } MEMMAP_DEVICE_PATH; 99 100 #define HW_VENDOR_DP 0x04 101 typedef struct { 102 EFI_DEVICE_PATH_PROTOCOL Header; 103 EFI_GUID Guid; 104 } VENDOR_DEVICE_PATH; 105 106 #define HW_CONTROLLER_DP 0x05 107 typedef struct { 108 EFI_DEVICE_PATH_PROTOCOL Header; 109 UINT32 ControllerNumber; 110 } CONTROLLER_DEVICE_PATH; 111 112 /// 113 /// ACPI Device Paths 114 /// 115 #define ACPI_DEVICE_PATH 0x02 116 117 #define ACPI_DP 0x01 118 typedef struct { 119 EFI_DEVICE_PATH_PROTOCOL Header; 120 UINT32 HID; 121 UINT32 UID; 122 } ACPI_HID_DEVICE_PATH; 123 124 #define ACPI_EXTENDED_DP 0x02 125 typedef struct { 126 EFI_DEVICE_PATH_PROTOCOL Header; 127 UINT32 HID; 128 UINT32 UID; 129 UINT32 CID; 130 /// 131 /// Optional variable length _HIDSTR 132 /// Optional variable length _UIDSTR 133 /// Optional variable length _CIDSTR 134 /// 135 } ACPI_EXTENDED_HID_DEVICE_PATH; 136 137 // 138 // EISA ID Macro 139 // EISA ID Definition 32-bits 140 // bits[15:0] - three character compressed ASCII EISA ID. 141 // bits[31:16] - binary number 142 // Compressed ASCII is 5 bits per character 0b00001 = 'A' 0b11010 = 'Z' 143 // 144 #define PNP_EISA_ID_CONST 0x41d0 145 #define EISA_ID(_Name, _Num) ((UINT32)((_Name) | (_Num) << 16)) 146 #define EISA_PNP_ID(_PNPId) (EISA_ID(PNP_EISA_ID_CONST, (_PNPId))) 147 #define EFI_PNP_ID(_PNPId) (EISA_ID(PNP_EISA_ID_CONST, (_PNPId))) 148 149 #define PNP_EISA_ID_MASK 0xffff 150 #define EISA_ID_TO_NUM(_Id) ((_Id) >> 16) 151 152 153 #define ACPI_ADR_DP 0x03 154 typedef struct { 155 EFI_DEVICE_PATH_PROTOCOL Header; 156 UINT32 ADR; 157 } ACPI_ADR_DEVICE_PATH; 158 159 #define ACPI_ADR_DISPLAY_TYPE_OTHER 0 160 #define ACPI_ADR_DISPLAY_TYPE_VGA 1 161 #define ACPI_ADR_DISPLAY_TYPE_TV 2 162 #define ACPI_ADR_DISPLAY_TYPE_EXTERNAL_DIGITAL 3 163 #define ACPI_ADR_DISPLAY_TYPE_INTERNAL_DIGITAL 4 164 165 #define ACPI_DISPLAY_ADR(_DeviceIdScheme, _HeadId, _NonVgaOutput, _BiosCanDetect, _VendorInfo, _Type, _Port, _Index) \ 166 ((UINT32)( (((_DeviceIdScheme) & 0x1) << 31) | \ 167 (((_HeadId) & 0x7) << 18) | \ 168 (((_NonVgaOutput) & 0x1) << 17) | \ 169 (((_BiosCanDetect) & 0x1) << 16) | \ 170 (((_VendorInfo) & 0xf) << 12) | \ 171 (((_Type) & 0xf) << 8) | \ 172 (((_Port) & 0xf) << 4) | \ 173 ((_Index) & 0xf) )) 174 175 /// 176 /// Messaging Device Paths 177 /// 178 #define MESSAGING_DEVICE_PATH 0x03 179 180 #define MSG_ATAPI_DP 0x01 181 typedef struct { 182 EFI_DEVICE_PATH_PROTOCOL Header; 183 UINT8 PrimarySecondary; 184 UINT8 SlaveMaster; 185 UINT16 Lun; 186 } ATAPI_DEVICE_PATH; 187 188 #define MSG_SCSI_DP 0x02 189 typedef struct { 190 EFI_DEVICE_PATH_PROTOCOL Header; 191 UINT16 Pun; 192 UINT16 Lun; 193 } SCSI_DEVICE_PATH; 194 195 #define MSG_FIBRECHANNEL_DP 0x03 196 typedef struct { 197 EFI_DEVICE_PATH_PROTOCOL Header; 198 UINT32 Reserved; 199 UINT64 WWN; 200 UINT64 Lun; 201 } FIBRECHANNEL_DEVICE_PATH; 202 203 #define MSG_1394_DP 0x04 204 typedef struct { 205 EFI_DEVICE_PATH_PROTOCOL Header; 206 UINT32 Reserved; 207 UINT64 Guid; 208 } F1394_DEVICE_PATH; 209 210 #define MSG_USB_DP 0x05 211 typedef struct { 212 EFI_DEVICE_PATH_PROTOCOL Header; 213 UINT8 ParentPortNumber; 214 UINT8 InterfaceNumber; 215 } USB_DEVICE_PATH; 216 217 #define MSG_USB_CLASS_DP 0x0f 218 typedef struct { 219 EFI_DEVICE_PATH_PROTOCOL Header; 220 UINT16 VendorId; 221 UINT16 ProductId; 222 UINT8 DeviceClass; 223 UINT8 DeviceSubClass; 224 UINT8 DeviceProtocol; 225 } USB_CLASS_DEVICE_PATH; 226 227 #define MSG_USB_WWID_DP 0x10 228 typedef struct { 229 EFI_DEVICE_PATH_PROTOCOL Header; 230 UINT16 InterfaceNumber; 231 UINT16 VendorId; 232 UINT16 ProductId; 233 // CHAR16 SerialNumber[...]; 234 } USB_WWID_DEVICE_PATH; 235 236 237 #define MSG_DEVICE_LOGICAL_UNIT_DP 0x11 238 typedef struct { 239 EFI_DEVICE_PATH_PROTOCOL Header; 240 UINT8 Lun; 241 } DEVICE_LOGICAL_UNIT_DEVICE_PATH; 242 243 #define MSG_SATA_DP 0x12 244 typedef struct { 245 EFI_DEVICE_PATH_PROTOCOL Header; 246 UINT16 HBAPortNumber; 247 UINT16 PortMultiplierPortNumber; 248 UINT16 Lun; 249 } SATA_DEVICE_PATH; 250 251 #define MSG_I2O_DP 0x06 252 typedef struct { 253 EFI_DEVICE_PATH_PROTOCOL Header; 254 UINT32 Tid; 255 } I2O_DEVICE_PATH; 256 257 #define MSG_MAC_ADDR_DP 0x0b 258 typedef struct { 259 EFI_DEVICE_PATH_PROTOCOL Header; 260 EFI_MAC_ADDRESS MacAddress; 261 UINT8 IfType; 262 } MAC_ADDR_DEVICE_PATH; 263 264 #define MSG_IPv4_DP 0x0c 265 typedef struct { 266 EFI_DEVICE_PATH_PROTOCOL Header; 267 EFI_IPv4_ADDRESS LocalIpAddress; 268 EFI_IPv4_ADDRESS RemoteIpAddress; 269 UINT16 LocalPort; 270 UINT16 RemotePort; 271 UINT16 Protocol; 272 BOOLEAN StaticIpAddress; 273 } IPv4_DEVICE_PATH; 274 275 #define MSG_IPv6_DP 0x0d 276 typedef struct { 277 EFI_DEVICE_PATH_PROTOCOL Header; 278 EFI_IPv6_ADDRESS LocalIpAddress; 279 EFI_IPv6_ADDRESS RemoteIpAddress; 280 UINT16 LocalPort; 281 UINT16 RemotePort; 282 UINT16 Protocol; 283 BOOLEAN StaticIpAddress; 284 } IPv6_DEVICE_PATH; 285 286 #define MSG_INFINIBAND_DP 0x09 287 typedef struct { 288 EFI_DEVICE_PATH_PROTOCOL Header; 289 UINT32 ResourceFlags; 290 UINT8 PortGid[16]; 291 UINT64 ServiceId; 292 UINT64 TargetPortId; 293 UINT64 DeviceId; 294 } INFINIBAND_DEVICE_PATH; 295 296 #define INFINIBAND_RESOURCE_FLAG_IOC_SERVICE 0x01 297 #define INFINIBAND_RESOURCE_FLAG_EXTENDED_BOOT_ENVIRONMENT 0x02 298 #define INFINIBAND_RESOURCE_FLAG_CONSOLE_PROTOCOL 0x04 299 #define INFINIBAND_RESOURCE_FLAG_STORAGE_PROTOCOL 0x08 300 #define INFINIBAND_RESOURCE_FLAG_NETWORK_PROTOCOL 0x10 301 302 #define MSG_UART_DP 0x0e 303 typedef struct { 304 EFI_DEVICE_PATH_PROTOCOL Header; 305 UINT32 Reserved; 306 UINT64 BaudRate; 307 UINT8 DataBits; 308 UINT8 Parity; 309 UINT8 StopBits; 310 } UART_DEVICE_PATH; 311 312 // 313 // Use VENDOR_DEVICE_PATH struct 314 // 315 #define MSG_VENDOR_DP 0x0a 316 typedef VENDOR_DEVICE_PATH VENDOR_DEFINED_DEVICE_PATH; 317 318 #define DEVICE_PATH_MESSAGING_PC_ANSI EFI_PC_ANSI_GUID 319 #define DEVICE_PATH_MESSAGING_VT_100 EFI_VT_100_GUID 320 #define DEVICE_PATH_MESSAGING_VT_100_PLUS EFI_VT_100_PLUS_GUID 321 #define DEVICE_PATH_MESSAGING_VT_UTF8 EFI_VT_UTF8_GUID 322 323 #define DEVICE_PATH_MESSAGING_UART_FLOW_CONTROL EFI_UART_DEVICE_PATH_GUID 324 325 typedef struct { 326 EFI_DEVICE_PATH_PROTOCOL Header; 327 EFI_GUID Guid; 328 UINT32 FlowControlMap; 329 } UART_FLOW_CONTROL_DEVICE_PATH; 330 331 #define DEVICE_PATH_MESSAGING_SAS EFI_SAS_DEVICE_PATH_GUID 332 333 typedef struct { 334 EFI_DEVICE_PATH_PROTOCOL Header; 335 EFI_GUID Guid; 336 UINT32 Reserved; 337 UINT64 SasAddress; 338 UINT64 Lun; 339 UINT16 DeviceTopology; 340 UINT16 RelativeTargetPort; 341 } SAS_DEVICE_PATH; 342 343 #define MSG_ISCSI_DP 0x13 344 typedef struct { 345 EFI_DEVICE_PATH_PROTOCOL Header; 346 UINT16 NetworkProtocol; 347 UINT16 LoginOption; 348 UINT64 Lun; 349 UINT16 TargetPortalGroupTag; 350 // CHAR8 iSCSI Target Name 351 } ISCSI_DEVICE_PATH; 352 353 #define ISCSI_LOGIN_OPTION_NO_HEADER_DIGEST 0x0000 354 #define ISCSI_LOGIN_OPTION_HEADER_DIGEST_USING_CRC32C 0x0002 355 #define ISCSI_LOGIN_OPTION_NO_DATA_DIGEST 0x0000 356 #define ISCSI_LOGIN_OPTION_DATA_DIGEST_USING_CRC32C 0x0008 357 #define ISCSI_LOGIN_OPTION_AUTHMETHOD_CHAP 0x0000 358 #define ISCSI_LOGIN_OPTION_AUTHMETHOD_NON 0x1000 359 #define ISCSI_LOGIN_OPTION_CHAP_BI 0x0000 360 #define ISCSI_LOGIN_OPTION_CHAP_UNI 0x2000 361 362 // 363 // Media Device Path 364 // 365 #define MEDIA_DEVICE_PATH 0x04 366 367 #define MEDIA_HARDDRIVE_DP 0x01 368 typedef struct { 369 EFI_DEVICE_PATH_PROTOCOL Header; 370 UINT32 PartitionNumber; 371 UINT64 PartitionStart; 372 UINT64 PartitionSize; 373 UINT8 Signature[16]; 374 UINT8 MBRType; 375 UINT8 SignatureType; 376 } HARDDRIVE_DEVICE_PATH; 377 378 #define MBR_TYPE_PCAT 0x01 379 #define MBR_TYPE_EFI_PARTITION_TABLE_HEADER 0x02 380 381 #define SIGNATURE_TYPE_MBR 0x01 382 #define SIGNATURE_TYPE_GUID 0x02 383 384 #define MEDIA_CDROM_DP 0x02 385 typedef struct { 386 EFI_DEVICE_PATH_PROTOCOL Header; 387 UINT32 BootEntry; 388 UINT64 PartitionStart; 389 UINT64 PartitionSize; 390 } CDROM_DEVICE_PATH; 391 392 // 393 // Use VENDOR_DEVICE_PATH struct 394 // 395 #define MEDIA_VENDOR_DP 0x03 396 397 #define MEDIA_FILEPATH_DP 0x04 398 typedef struct { 399 EFI_DEVICE_PATH_PROTOCOL Header; 400 CHAR16 PathName[1]; 401 } FILEPATH_DEVICE_PATH; 402 403 #define SIZE_OF_FILEPATH_DEVICE_PATH EFI_FIELD_OFFSET(FILEPATH_DEVICE_PATH,PathName) 404 405 #define MEDIA_PROTOCOL_DP 0x05 406 typedef struct { 407 EFI_DEVICE_PATH_PROTOCOL Header; 408 EFI_GUID Protocol; 409 } MEDIA_PROTOCOL_DEVICE_PATH; 410 411 412 #define MEDIA_PIWG_FW_VOL_DP 0x7 413 typedef struct { 414 EFI_DEVICE_PATH_PROTOCOL Header; 415 EFI_GUID FvName; 416 } MEDIA_FW_VOL_DEVICE_PATH; 417 418 419 #define MEDIA_PIWG_FW_FILE_DP 0x6 420 typedef struct { 421 EFI_DEVICE_PATH_PROTOCOL Header; 422 EFI_GUID FvFileName; 423 } MEDIA_FW_VOL_FILEPATH_DEVICE_PATH; 424 425 // 426 // BBS Device Path 427 // 428 #define BBS_DEVICE_PATH 0x05 429 #define BBS_BBS_DP 0x01 430 typedef struct { 431 EFI_DEVICE_PATH_PROTOCOL Header; 432 UINT16 DeviceType; 433 UINT16 StatusFlag; 434 CHAR8 String[1]; 435 } BBS_BBS_DEVICE_PATH; 436 437 // 438 // DeviceType definitions - from BBS specification 439 // 440 #define BBS_TYPE_FLOPPY 0x01 441 #define BBS_TYPE_HARDDRIVE 0x02 442 #define BBS_TYPE_CDROM 0x03 443 #define BBS_TYPE_PCMCIA 0x04 444 #define BBS_TYPE_USB 0x05 445 #define BBS_TYPE_EMBEDDED_NETWORK 0x06 446 #define BBS_TYPE_BEV 0x80 447 #define BBS_TYPE_UNKNOWN 0xFF 448 449 450 /// 451 /// Union of all possible Device Paths and pointers to Device Paths 452 /// 453 454 typedef union { 455 EFI_DEVICE_PATH_PROTOCOL DevPath; 456 PCI_DEVICE_PATH Pci; 457 PCCARD_DEVICE_PATH PcCard; 458 MEMMAP_DEVICE_PATH MemMap; 459 VENDOR_DEVICE_PATH Vendor; 460 461 CONTROLLER_DEVICE_PATH Controller; 462 ACPI_HID_DEVICE_PATH Acpi; 463 464 ATAPI_DEVICE_PATH Atapi; 465 SCSI_DEVICE_PATH Scsi; 466 ISCSI_DEVICE_PATH Iscsi; 467 FIBRECHANNEL_DEVICE_PATH FibreChannel; 468 469 F1394_DEVICE_PATH F1394; 470 USB_DEVICE_PATH Usb; 471 SATA_DEVICE_PATH Sata; 472 USB_CLASS_DEVICE_PATH UsbClass; 473 I2O_DEVICE_PATH I2O; 474 MAC_ADDR_DEVICE_PATH MacAddr; 475 IPv4_DEVICE_PATH Ipv4; 476 IPv6_DEVICE_PATH Ipv6; 477 INFINIBAND_DEVICE_PATH InfiniBand; 478 UART_DEVICE_PATH Uart; 479 480 HARDDRIVE_DEVICE_PATH HardDrive; 481 CDROM_DEVICE_PATH CD; 482 483 FILEPATH_DEVICE_PATH FilePath; 484 MEDIA_PROTOCOL_DEVICE_PATH MediaProtocol; 485 486 BBS_BBS_DEVICE_PATH Bbs; 487 } EFI_DEV_PATH; 488 489 490 491 typedef union { 492 EFI_DEVICE_PATH_PROTOCOL *DevPath; 493 PCI_DEVICE_PATH *Pci; 494 PCCARD_DEVICE_PATH *PcCard; 495 MEMMAP_DEVICE_PATH *MemMap; 496 VENDOR_DEVICE_PATH *Vendor; 497 498 CONTROLLER_DEVICE_PATH *Controller; 499 ACPI_HID_DEVICE_PATH *Acpi; 500 ACPI_EXTENDED_HID_DEVICE_PATH *ExtendedAcpi; 501 502 ATAPI_DEVICE_PATH *Atapi; 503 SCSI_DEVICE_PATH *Scsi; 504 FIBRECHANNEL_DEVICE_PATH *FibreChannel; 505 506 F1394_DEVICE_PATH *F1394; 507 USB_DEVICE_PATH *Usb; 508 SATA_DEVICE_PATH *Sata; 509 USB_CLASS_DEVICE_PATH *UsbClass; 510 I2O_DEVICE_PATH *I2O; 511 MAC_ADDR_DEVICE_PATH *MacAddr; 512 IPv4_DEVICE_PATH *Ipv4; 513 IPv6_DEVICE_PATH *Ipv6; 514 INFINIBAND_DEVICE_PATH *InfiniBand; 515 UART_DEVICE_PATH *Uart; 516 517 HARDDRIVE_DEVICE_PATH *HardDrive; 518 CDROM_DEVICE_PATH *CD; 519 520 FILEPATH_DEVICE_PATH *FilePath; 521 MEDIA_PROTOCOL_DEVICE_PATH *MediaProtocol; 522 523 BBS_BBS_DEVICE_PATH *Bbs; 524 UINT8 *Raw; 525 } EFI_DEV_PATH_PTR; 526 527 #pragma pack() 528 529 #define END_DEVICE_PATH_TYPE 0x7f 530 #define END_ENTIRE_DEVICE_PATH_SUBTYPE 0xFF 531 #define END_INSTANCE_DEVICE_PATH_SUBTYPE 0x01 532 533 extern EFI_GUID gEfiDevicePathProtocolGuid; 534 535 #endif 536