e0759a83 |
1 | /** @file\r |
2 | ElTorito Partitions Format Definition.\r |
3 | \r |
4 | Copyright (c) 2006, Intel Corporation \r |
5 | All rights reserved. This program and the accompanying materials \r |
6 | are licensed and made available under the terms and conditions of the BSD License \r |
7 | which accompanies this distribution. The full text of the license may be found at \r |
8 | http://opensource.org/licenses/bsd-license.php \r |
9 | \r |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r |
12 | \r |
13 | --*/\r |
14 | \r |
15 | #ifndef _ELTORITO_H_\r |
16 | #define _ELTORITO_H_\r |
17 | \r |
18 | //\r |
19 | // CDROM_VOLUME_DESCRIPTOR.Types\r |
20 | //\r |
21 | #define CDVOL_TYPE_STANDARD 0x0\r |
22 | #define CDVOL_TYPE_CODED 0x1\r |
23 | #define CDVOL_TYPE_END 0xFF\r |
24 | \r |
25 | //\r |
26 | // CDROM_VOLUME_DESCRIPTOR.Id\r |
27 | //\r |
28 | #define CDVOL_ID "CD001"\r |
29 | \r |
30 | //\r |
31 | // CDROM_VOLUME_DESCRIPTOR.SystemId\r |
32 | //\r |
33 | #define CDVOL_ELTORITO_ID "EL TORITO SPECIFICATION"\r |
34 | \r |
35 | //\r |
36 | // Indicator types\r |
37 | //\r |
38 | #define ELTORITO_ID_CATALOG 0x01\r |
39 | #define ELTORITO_ID_SECTION_BOOTABLE 0x88\r |
40 | #define ELTORITO_ID_SECTION_NOT_BOOTABLE 0x00\r |
41 | #define ELTORITO_ID_SECTION_HEADER 0x90\r |
42 | #define ELTORITO_ID_SECTION_HEADER_FINAL 0x91\r |
43 | \r |
44 | //\r |
45 | // ELTORITO_CATALOG.Boot.MediaTypes\r |
46 | //\r |
47 | #define ELTORITO_NO_EMULATION 0x00\r |
48 | #define ELTORITO_12_DISKETTE 0x01\r |
49 | #define ELTORITO_14_DISKETTE 0x02\r |
50 | #define ELTORITO_28_DISKETTE 0x03\r |
51 | #define ELTORITO_HARD_DISK 0x04\r |
52 | \r |
53 | \r |
54 | #pragma pack(1)\r |
55 | \r |
56 | //\r |
57 | // El Torito Volume Descriptor\r |
58 | // Note that the CDROM_VOLUME_DESCRIPTOR does not match the ISO-9660\r |
59 | // descriptor. For some reason descriptor used by El Torito is\r |
60 | // different, but they start the same. The El Torito descriptor\r |
61 | // is left shifted 1 byte starting with the SystemId. (Note this\r |
62 | // causes the field to get unaligned)\r |
63 | //\r |
64 | typedef struct {\r |
65 | UINT8 Type;\r |
66 | CHAR8 Id[5]; // CD001\r |
67 | UINT8 Version;\r |
68 | CHAR8 SystemId[26];\r |
69 | CHAR8 Unused[38];\r |
70 | UINT8 EltCatalog[4];\r |
71 | CHAR8 Unused2[5];\r |
72 | UINT32 VolSpaceSize[2];\r |
73 | } CDROM_VOLUME_DESCRIPTOR;\r |
74 | \r |
75 | //\r |
76 | // Catalog Entry\r |
77 | //\r |
78 | typedef union {\r |
79 | struct {\r |
80 | CHAR8 Reserved[0x20];\r |
81 | } Unknown;\r |
82 | \r |
83 | //\r |
84 | // Catalog validation entry (Catalog header)\r |
85 | //\r |
86 | struct {\r |
87 | UINT8 Indicator;\r |
88 | UINT8 PlatformId;\r |
89 | UINT16 Reserved;\r |
90 | CHAR8 ManufacId[24];\r |
91 | UINT16 Checksum;\r |
92 | UINT16 Id55AA;\r |
93 | } Catalog;\r |
94 | \r |
95 | //\r |
96 | // Initial/Default Entry or Section Entry\r |
97 | //\r |
98 | struct {\r |
99 | UINT8 Indicator;\r |
100 | UINT8 MediaType : 4;\r |
101 | UINT8 Reserved1 : 4;\r |
102 | UINT16 LoadSegment;\r |
103 | UINT8 SystemType;\r |
104 | UINT8 Reserved2;\r |
105 | UINT16 SectorCount;\r |
106 | UINT32 Lba;\r |
107 | } Boot;\r |
108 | \r |
109 | //\r |
110 | // Section Header Entry\r |
111 | //\r |
112 | struct {\r |
113 | UINT8 Indicator;\r |
114 | UINT8 PlatformId;\r |
115 | UINT16 SectionEntries;\r |
116 | CHAR8 Id[28];\r |
117 | } Section;\r |
118 | \r |
119 | } ELTORITO_CATALOG;\r |
120 | \r |
121 | #pragma pack()\r |
122 | \r |
123 | #endif\r |