projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 3eb9473e | 1 | /*++\r |
| 2 | \r | |
| f57387d5 HT |
3 | Copyright (c) 2004, Intel Corporation. All rights reserved.<BR>\r |
| 4 | This program and the accompanying materials \r | |
| 3eb9473e | 5 | are licensed and made available under the terms and conditions of the BSD License \r |
| 6 | which accompanies this distribution. The full text of the license may be found at \r | |
| 7 | http://opensource.org/licenses/bsd-license.php \r | |
| 8 | \r | |
| 9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
| 10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
| 11 | \r | |
| 12 | Module Name:\r | |
| 13 | \r | |
| 14 | DevicePath.h\r | |
| 15 | \r | |
| 16 | Abstract:\r | |
| 17 | \r | |
| 18 | The device path protocol as defined in EFI 1.0.\r | |
| 19 | \r | |
| 20 | The device path represents a programatic path to a device. It's the view\r | |
| 21 | from a software point of view. It also must persist from boot to boot, so \r | |
| 22 | it can not contain things like PCI bus numbers that change from boot to boot.\r | |
| 23 | \r | |
| 24 | \r | |
| 25 | --*/\r | |
| 26 | \r | |
| 27 | #ifndef _DEVICE_PATH_H_\r | |
| 28 | #define _DEVICE_PATH_H_\r | |
| 29 | \r | |
| 30 | //\r | |
| 31 | // Device Path protocol\r | |
| 32 | //\r | |
| 33 | #define EFI_DEVICE_PATH_PROTOCOL_GUID \\r | |
| 34 | { \\r | |
| 7ccf38a3 | 35 | 0x9576e91, 0x6d3f, 0x11d2, {0x8e, 0x39, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b} \\r |
| 3eb9473e | 36 | }\r |
| 37 | \r | |
| 88b6bcec | 38 | #pragma pack(1)\r |
| 3eb9473e | 39 | \r |
| 40 | typedef struct {\r | |
| 41 | UINT8 Type;\r | |
| 42 | UINT8 SubType;\r | |
| 43 | UINT8 Length[2];\r | |
| 44 | } EFI_DEVICE_PATH_PROTOCOL;\r | |
| 45 | \r | |
| 88b6bcec | 46 | #pragma pack()\r |
| 3eb9473e | 47 | \r |
| 48 | #define EFI_END_ENTIRE_DEVICE_PATH 0xff\r | |
| 49 | #define EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE 0xff\r | |
| 50 | #define EFI_END_INSTANCE_DEVICE_PATH 0x01\r | |
| 51 | #define EFI_END_DEVICE_PATH_LENGTH (sizeof (EFI_DEVICE_PATH_PROTOCOL))\r | |
| 52 | \r | |
| 53 | #define EfiDevicePathNodeLength(a) (((a)->Length[0]) | ((a)->Length[1] << 8))\r | |
| 54 | #define EfiNextDevicePathNode(a) ((EFI_DEVICE_PATH_PROTOCOL *) (((UINT8 *) (a)) + EfiDevicePathNodeLength (a)))\r | |
| 55 | \r | |
| 56 | #define EfiDevicePathType(a) (((a)->Type) & 0x7f)\r | |
| 57 | #define EfiIsDevicePathEndType(a) (EfiDevicePathType (a) == 0x7f)\r | |
| 58 | \r | |
| 59 | #define EfiIsDevicePathEndSubType(a) ((a)->SubType == EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE)\r | |
| 60 | #define EfiIsDevicePathEndInstanceSubType(a) ((a)->SubType == EFI_END_INSTANCE_DEVICE_PATH)\r | |
| 61 | \r | |
| 62 | #define EfiIsDevicePathEnd(a) (EfiIsDevicePathEndType (a) && EfiIsDevicePathEndSubType (a))\r | |
| 63 | #define EfiIsDevicePathEndInstance(a) (EfiIsDevicePathEndType (a) && EfiIsDevicePathEndInstanceSubType (a))\r | |
| 64 | \r | |
| 65 | extern EFI_GUID gEfiDevicePathProtocolGuid;\r | |
| 66 | \r | |
| 67 | #endif\r |