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/** @file
The device path protocol as defined in UEFI 2.0.
The device path represents a programatic path to a device. It's the view
from a software point of view. It also must persist from boot to boot, so
it can not contain things like PCI bus numbers that change from boot to boot.
Copyright (c) 2006 - 2008, Intel Corporation All rights reserved.
This program and the accompanying materials are licensed and made available
under the terms and conditions of the BSD License which accompanies this
distribution. The full text of the license may be found at:
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
File Name: DevicePath.h
**/
#ifndef __EFI_DEVICE_PATH_PROTOCOL_H__
#define __EFI_DEVICE_PATH_PROTOCOL_H__
#include <Guid/PcAnsi.h>
//
// Device Path protocol
//
#define EFI_DEVICE_PATH_PROTOCOL_GUID \
{ \
0x9576e91, 0x6d3f, 0x11d2, {0x8e, 0x39, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b } \
}
//
// Protocol GUID defined in EFI1.1.
//
//
// Device Path information
//
#define DEVICE_PATH_PROTOCOL EFI_DEVICE_PATH_PROTOCOL_GUID
#pragma pack(1)
typedef struct {
UINT8 Type;
UINT8 SubType;
UINT8 Length[2];
} EFI_DEVICE_PATH_PROTOCOL;
//
// For backward-compatible with EFI1.1.
//
typedef EFI_DEVICE_PATH_PROTOCOL EFI_DEVICE_PATH;
//
// Hardware Device Paths
//
#define HARDWARE_DEVICE_PATH 0x01
#define HW_PCI_DP 0x01
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT8 Function;
UINT8 Device;
} PCI_DEVICE_PATH;
#define HW_PCCARD_DP 0x02
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT8 FunctionNumber;
} PCCARD_DEVICE_PATH;
#define HW_MEMMAP_DP 0x03
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT32 MemoryType;
EFI_PHYSICAL_ADDRESS StartingAddress;
EFI_PHYSICAL_ADDRESS EndingAddress;
} MEMMAP_DEVICE_PATH;
#define HW_VENDOR_DP 0x04
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
EFI_GUID Guid;
} VENDOR_DEVICE_PATH;
#define HW_CONTROLLER_DP 0x05
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT32 ControllerNumber;
} CONTROLLER_DEVICE_PATH;
//
// ACPI Device Paths
//
#define ACPI_DEVICE_PATH 0x02
#define ACPI_DP 0x01
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT32 HID;
UINT32 UID;
} ACPI_HID_DEVICE_PATH;
#define ACPI_EXTENDED_DP 0x02
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT32 HID;
UINT32 UID;
UINT32 CID;
//
// Optional variable length _HIDSTR
// Optional variable length _UIDSTR
//
} ACPI_EXTENDED_HID_DEVICE_PATH;
//
// EISA ID Macro
// EISA ID Definition 32-bits
// bits[15:0] - three character compressed ASCII EISA ID.
// bits[31:16] - binary number
// Compressed ASCII is 5 bits per character 0b00001 = 'A' 0b11010 = 'Z'
//
#define PNP_EISA_ID_CONST 0x41d0
#define EISA_ID(_Name, _Num) ((UINT32) ((_Name) | (_Num) << 16))
#define EISA_PNP_ID(_PNPId) (EISA_ID(PNP_EISA_ID_CONST, (_PNPId)))
#define EFI_PNP_ID(_PNPId) (EISA_ID(PNP_EISA_ID_CONST, (_PNPId)))
#define PNP_EISA_ID_MASK 0xffff
#define EISA_ID_TO_NUM(_Id) ((_Id) >> 16)
#define ACPI_ADR_DP 0x03
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT32 ADR;
} ACPI_ADR_DEVICE_PATH;
//
// Messaging Device Paths
//
#define MESSAGING_DEVICE_PATH 0x03
#define MSG_ATAPI_DP 0x01
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT8 PrimarySecondary;
UINT8 SlaveMaster;
UINT16 Lun;
} ATAPI_DEVICE_PATH;
#define MSG_SCSI_DP 0x02
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT16 Pun;
UINT16 Lun;
} SCSI_DEVICE_PATH;
#define MSG_FIBRECHANNEL_DP 0x03
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT32 Reserved;
UINT64 WWN;
UINT64 Lun;
} FIBRECHANNEL_DEVICE_PATH;
#define MSG_1394_DP 0x04
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT32 Reserved;
UINT64 Guid;
} F1394_DEVICE_PATH;
#define MSG_USB_DP 0x05
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT8 ParentPortNumber;
UINT8 InterfaceNumber;
} USB_DEVICE_PATH;
#define MSG_USB_CLASS_DP 0x0f
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT16 VendorId;
UINT16 ProductId;
UINT8 DeviceClass;
UINT8 DeviceSubClass;
UINT8 DeviceProtocol;
} USB_CLASS_DEVICE_PATH;
#define MSG_USB_WWID_DP 0x10
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT16 InterfaceNumber;
UINT16 VendorId;
UINT16 ProductId;
// CHAR16 SerialNumber[...];
} USB_WWID_DEVICE_PATH;
#define MSG_DEVICE_LOGICAL_UNIT_DP 0x11
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT8 Lun;
} DEVICE_LOGICAL_UNIT_DEVICE_PATH;
#define MSG_SATA_DP 0x12
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT16 HBAPortNumber;
UINT16 PortMultiplierPortNumber;
UINT16 Lun;
} SATA_DEVICE_PATH;
#define MSG_I2O_DP 0x06
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT32 Tid;
} I2O_DEVICE_PATH;
#define MSG_MAC_ADDR_DP 0x0b
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
EFI_MAC_ADDRESS MacAddress;
UINT8 IfType;
} MAC_ADDR_DEVICE_PATH;
#define MSG_IPv4_DP 0x0c
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
EFI_IPv4_ADDRESS LocalIpAddress;
EFI_IPv4_ADDRESS RemoteIpAddress;
UINT16 LocalPort;
UINT16 RemotePort;
UINT16 Protocol;
BOOLEAN StaticIpAddress;
} IPv4_DEVICE_PATH;
#define MSG_IPv6_DP 0x0d
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
EFI_IPv6_ADDRESS LocalIpAddress;
EFI_IPv6_ADDRESS RemoteIpAddress;
UINT16 LocalPort;
UINT16 RemotePort;
UINT16 Protocol;
BOOLEAN StaticIpAddress;
} IPv6_DEVICE_PATH;
#define MSG_INFINIBAND_DP 0x09
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT32 ResourceFlags;
UINT8 PortGid[16];
UINT64 ServiceId;
UINT64 TargetPortId;
UINT64 DeviceId;
} INFINIBAND_DEVICE_PATH;
#define INFINIBAND_RESOURCE_FLAG_IOC_SERVICE 0x01
#define INFINIBAND_RESOURCE_FLAG_EXTENDED_BOOT_ENVIRONMENT 0x02
#define INFINIBAND_RESOURCE_FLAG_CONSOLE_PROTOCOL 0x04
#define INFINIBAND_RESOURCE_FLAG_STORAGE_PROTOCOL 0x08
#define INFINIBAND_RESOURCE_FLAG_NETWORK_PROTOCOL 0x10
#define MSG_UART_DP 0x0e
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT32 Reserved;
UINT64 BaudRate;
UINT8 DataBits;
UINT8 Parity;
UINT8 StopBits;
} UART_DEVICE_PATH;
//
// Use VENDOR_DEVICE_PATH struct
//
#define MSG_VENDOR_DP 0x0a
typedef VENDOR_DEVICE_PATH VENDOR_DEFINED_DEVICE_PATH;
#define DEVICE_PATH_MESSAGING_PC_ANSI EFI_PC_ANSI_GUID
#define DEVICE_PATH_MESSAGING_VT_100 EFI_VT_100_GUID
#define DEVICE_PATH_MESSAGING_VT_100_PLUS EFI_VT_100_PLUS_GUID
#define DEVICE_PATH_MESSAGING_VT_UTF8 EFI_VT_UTF8_GUID
#define DEVICE_PATH_MESSAGING_UART_FLOW_CONTROL EFI_UART_DEVICE_PATH_GUID
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
EFI_GUID Guid;
UINT32 FlowControlMap;
} UART_FLOW_CONTROL_DEVICE_PATH;
#define DEVICE_PATH_MESSAGING_SAS EFI_SAS_DEVICE_PATH_GUID
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
EFI_GUID Guid;
UINT32 Reserved;
UINT64 SasAddress;
UINT64 Lun;
UINT16 DeviceTopology;
UINT16 RelativeTargetPort;
} SAS_DEVICE_PATH;
#define MSG_ISCSI_DP 0x13
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT16 NetworkProtocol;
UINT16 LoginOption;
UINT64 Lun;
UINT16 TargetPortalGroupTag;
// CHAR8 iSCSI Target Name
} ISCSI_DEVICE_PATH;
#define ISCSI_LOGIN_OPTION_NO_HEADER_DIGEST 0x0000
#define ISCSI_LOGIN_OPTION_HEADER_DIGEST_USING_CRC32C 0x0002
#define ISCSI_LOGIN_OPTION_NO_DATA_DIGEST 0x0000
#define ISCSI_LOGIN_OPTION_DATA_DIGEST_USING_CRC32C 0x0008
#define ISCSI_LOGIN_OPTION_AUTHMETHOD_CHAP 0x0000
#define ISCSI_LOGIN_OPTION_AUTHMETHOD_NON 0x1000
#define ISCSI_LOGIN_OPTION_CHAP_BI 0x0000
#define ISCSI_LOGIN_OPTION_CHAP_UNI 0x2000
//
// Media Device Path
//
#define MEDIA_DEVICE_PATH 0x04
#define MEDIA_HARDDRIVE_DP 0x01
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT32 PartitionNumber;
UINT64 PartitionStart;
UINT64 PartitionSize;
UINT8 Signature[16];
UINT8 MBRType;
UINT8 SignatureType;
} HARDDRIVE_DEVICE_PATH;
#define MBR_TYPE_PCAT 0x01
#define MBR_TYPE_EFI_PARTITION_TABLE_HEADER 0x02
#define SIGNATURE_TYPE_MBR 0x01
#define SIGNATURE_TYPE_GUID 0x02
#define MEDIA_CDROM_DP 0x02
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT32 BootEntry;
UINT64 PartitionStart;
UINT64 PartitionSize;
} CDROM_DEVICE_PATH;
//
// Use VENDOR_DEVICE_PATH struct
//
#define MEDIA_VENDOR_DP 0x03
#define MEDIA_FILEPATH_DP 0x04
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
CHAR16 PathName[1];
} FILEPATH_DEVICE_PATH;
#define SIZE_OF_FILEPATH_DEVICE_PATH EFI_FIELD_OFFSET(FILEPATH_DEVICE_PATH,PathName)
#define MEDIA_PROTOCOL_DP 0x05
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
EFI_GUID Protocol;
} MEDIA_PROTOCOL_DEVICE_PATH;
#define MEDIA_PIWG_FW_VOL_DP 0x7
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
EFI_GUID FvName;
} MEDIA_FW_VOL_DEVICE_PATH;
#define MEDIA_PIWG_FW_FILE_DP 0x6
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
EFI_GUID FvFileName;
} MEDIA_FW_VOL_FILEPATH_DEVICE_PATH;
//
// BBS Device Path
//
#define BBS_DEVICE_PATH 0x05
#define BBS_BBS_DP 0x01
typedef struct {
EFI_DEVICE_PATH_PROTOCOL Header;
UINT16 DeviceType;
UINT16 StatusFlag;
CHAR8 String[1];
} BBS_BBS_DEVICE_PATH;
//
// DeviceType definitions - from BBS specification
//
#define BBS_TYPE_FLOPPY 0x01
#define BBS_TYPE_HARDDRIVE 0x02
#define BBS_TYPE_CDROM 0x03
#define BBS_TYPE_PCMCIA 0x04
#define BBS_TYPE_USB 0x05
#define BBS_TYPE_EMBEDDED_NETWORK 0x06
#define BBS_TYPE_BEV 0x80
#define BBS_TYPE_UNKNOWN 0xFF
//
// Union of all possible Device Paths and pointers to Device Paths
//
typedef union {
EFI_DEVICE_PATH_PROTOCOL DevPath;
PCI_DEVICE_PATH Pci;
PCCARD_DEVICE_PATH PcCard;
MEMMAP_DEVICE_PATH MemMap;
VENDOR_DEVICE_PATH Vendor;
CONTROLLER_DEVICE_PATH Controller;
ACPI_HID_DEVICE_PATH Acpi;
ATAPI_DEVICE_PATH Atapi;
SCSI_DEVICE_PATH Scsi;
ISCSI_DEVICE_PATH Iscsi;
FIBRECHANNEL_DEVICE_PATH FibreChannel;
F1394_DEVICE_PATH F1394;
USB_DEVICE_PATH Usb;
SATA_DEVICE_PATH Sata;
USB_CLASS_DEVICE_PATH UsbClass;
I2O_DEVICE_PATH I2O;
MAC_ADDR_DEVICE_PATH MacAddr;
IPv4_DEVICE_PATH Ipv4;
IPv6_DEVICE_PATH Ipv6;
INFINIBAND_DEVICE_PATH InfiniBand;
UART_DEVICE_PATH Uart;
HARDDRIVE_DEVICE_PATH HardDrive;
CDROM_DEVICE_PATH CD;
FILEPATH_DEVICE_PATH FilePath;
MEDIA_PROTOCOL_DEVICE_PATH MediaProtocol;
BBS_BBS_DEVICE_PATH Bbs;
} EFI_DEV_PATH;
typedef union {
EFI_DEVICE_PATH_PROTOCOL *DevPath;
PCI_DEVICE_PATH *Pci;
PCCARD_DEVICE_PATH *PcCard;
MEMMAP_DEVICE_PATH *MemMap;
VENDOR_DEVICE_PATH *Vendor;
CONTROLLER_DEVICE_PATH *Controller;
ACPI_HID_DEVICE_PATH *Acpi;
ACPI_EXTENDED_HID_DEVICE_PATH *ExtendedAcpi;
ATAPI_DEVICE_PATH *Atapi;
SCSI_DEVICE_PATH *Scsi;
FIBRECHANNEL_DEVICE_PATH *FibreChannel;
F1394_DEVICE_PATH *F1394;
USB_DEVICE_PATH *Usb;
SATA_DEVICE_PATH *Sata;
USB_CLASS_DEVICE_PATH *UsbClass;
I2O_DEVICE_PATH *I2O;
MAC_ADDR_DEVICE_PATH *MacAddr;
IPv4_DEVICE_PATH *Ipv4;
IPv6_DEVICE_PATH *Ipv6;
INFINIBAND_DEVICE_PATH *InfiniBand;
UART_DEVICE_PATH *Uart;
HARDDRIVE_DEVICE_PATH *HardDrive;
CDROM_DEVICE_PATH *CD;
FILEPATH_DEVICE_PATH *FilePath;
MEDIA_PROTOCOL_DEVICE_PATH *MediaProtocol;
BBS_BBS_DEVICE_PATH *Bbs;
UINT8 *Raw;
} EFI_DEV_PATH_PTR;
#pragma pack()
#define EFI_DP_TYPE_MASK 0x7F
#define EFI_DP_TYPE_UNPACKED 0x80
#define END_DEVICE_PATH_TYPE 0x7f
#define EFI_END_ENTIRE_DEVICE_PATH 0xff
#define EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE 0xff
#define EFI_END_INSTANCE_DEVICE_PATH 0x01
#define END_ENTIRE_DEVICE_PATH_SUBTYPE EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE
#define END_INSTANCE_DEVICE_PATH_SUBTYPE EFI_END_INSTANCE_DEVICE_PATH
#define EFI_END_DEVICE_PATH_LENGTH (sizeof (EFI_DEVICE_PATH_PROTOCOL))
#define END_DEVICE_PATH_LENGTH EFI_END_DEVICE_PATH_LENGTH
#define DP_IS_END_TYPE(a)
#define DP_IS_END_SUBTYPE(a) (((a)->SubType == END_ENTIRE_DEVICE_PATH_SUBTYPE)
#define DevicePathSubType(a) ((a)->SubType)
#define IsDevicePathUnpacked(a) ((a)->Type & EFI_DP_TYPE_UNPACKED)
#define EfiDevicePathNodeLength(a) (((a)->Length[0]) | ((a)->Length[1] << 8))
#define DevicePathNodeLength(a) (EfiDevicePathNodeLength(a))
#define EfiNextDevicePathNode(a) ((EFI_DEVICE_PATH_PROTOCOL *) (((UINT8 *) (a)) + EfiDevicePathNodeLength (a)))
#define NextDevicePathNode(a) (EfiNextDevicePathNode(a))
#define EfiDevicePathType(a) (((a)->Type) & EFI_DP_TYPE_MASK)
#define DevicePathType(a) (EfiDevicePathType(a))
#define EfiIsDevicePathEndType(a) (EfiDevicePathType (a) == END_DEVICE_PATH_TYPE)
#define IsDevicePathEndType(a) (EfiIsDevicePathEndType(a))
#define EfiIsDevicePathEndSubType(a) ((a)->SubType == EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE)
#define IsDevicePathEndSubType(a) (EfiIsDevicePathEndSubType(a))
#define EfiIsDevicePathEndInstanceSubType(a) ((a)->SubType == EFI_END_INSTANCE_DEVICE_PATH)
#define EfiIsDevicePathEnd(a) (EfiIsDevicePathEndType (a) && EfiIsDevicePathEndSubType (a))
#define IsDevicePathEnd(a) (EfiIsDevicePathEnd(a))
#define EfiIsDevicePathEndInstance(a) (EfiIsDevicePathEndType (a) && EfiIsDevicePathEndInstanceSubType (a))
#define SetDevicePathNodeLength(a,l) { \
(a)->Length[0] = (UINT8) (l); \
(a)->Length[1] = (UINT8) ((l) >> 8); \
}
#define SetDevicePathEndNode(a) { \
(a)->Type = END_DEVICE_PATH_TYPE; \
(a)->SubType = END_ENTIRE_DEVICE_PATH_SUBTYPE; \
(a)->Length[0] = sizeof(EFI_DEVICE_PATH_PROTOCOL); \
(a)->Length[1] = 0; \
}
extern EFI_GUID gEfiDevicePathProtocolGuid;
#endif
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