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[mirror_edk2.git] / MdePkg / Include / IndustryStandard / ElTorito.h

/** @file\r
  ElTorito Partitions Format Definition. \r
  This file includes some defintions from \r
  1. "El Torito" Bootable CD-ROM Format Specification, Version 1.0.\r
  2. Volume and File Structure of CDROM for Information Interchange, \r
     Standard ECMA-119. (IS0 9660)\r
\r
Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials                          \r
are licensed and made available under the terms and conditions of the BSD License         \r
which accompanies this distribution.  The full text of the license may be found at        \r
http://opensource.org/licenses/bsd-license.php                                            \r
                                                                                          \r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     \r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             \r
\r
**/\r
\r
#ifndef _ELTORITO_H_\r
#define _ELTORITO_H_\r
\r
//\r
// CDROM_VOLUME_DESCRIPTOR.Types, defined in ISO 9660\r
//\r
#define CDVOL_TYPE_STANDARD 0x0\r
#define CDVOL_TYPE_CODED    0x1\r
#define CDVOL_TYPE_END      0xFF\r
\r
///\r
/// CDROM_VOLUME_DESCRIPTOR.Id\r
///\r
#define CDVOL_ID  "CD001"\r
\r
///\r
/// CDROM_VOLUME_DESCRIPTOR.SystemId\r
///\r
#define CDVOL_ELTORITO_ID "EL TORITO SPECIFICATION"\r
\r
//\r
// Indicator types\r
//\r
#define ELTORITO_ID_CATALOG               0x01\r
#define ELTORITO_ID_SECTION_BOOTABLE      0x88\r
#define ELTORITO_ID_SECTION_NOT_BOOTABLE  0x00\r
#define ELTORITO_ID_SECTION_HEADER        0x90\r
#define ELTORITO_ID_SECTION_HEADER_FINAL  0x91\r
\r
//\r
// ELTORITO_CATALOG.Boot.MediaTypes\r
//\r
#define ELTORITO_NO_EMULATION 0x00\r
#define ELTORITO_12_DISKETTE  0x01\r
#define ELTORITO_14_DISKETTE  0x02\r
#define ELTORITO_28_DISKETTE  0x03\r
#define ELTORITO_HARD_DISK    0x04\r
\r
\r
#pragma pack(1)\r
\r
/// \r
/// CD-ROM Volume Descriptor\r
/// \r
typedef union { \r
  struct {\r
    UINT8   Type;     \r
    CHAR8   Id[5];           ///< "CD001"    \r
    CHAR8   Reserved[82];\r
  } Unknown;\r
\r
  ///\r
  /// Boot Record Volume Descriptor, defined in "El Torito" Specification.\r
  ///\r
  struct {\r
    UINT8   Type;            ///< Must be 0\r
    CHAR8   Id[5];           ///< "CD001" \r
    UINT8   Version;         ///< Must be 1 \r
    CHAR8   SystemId[32];    ///< "EL TORITO SPECIFICATION" \r
    CHAR8   Unused[32];      ///< Must be 0 \r
    UINT8   EltCatalog[4];   ///< Absolute pointer to first sector of Boot Catalog\r
    CHAR8   Unused2[13];     ///< Must be 0\r
  } BootRecordVolume;\r
 \r
  ///\r
  /// Primary Volumn Descriptor, defined in ISO 9660.\r
  ///\r
  struct {\r
    UINT8   Type; \r
    CHAR8   Id[5];           ///< "CD001"\r
    UINT8   Version; \r
    UINT8   Unused;          ///< Must be 0\r
    CHAR8   SystemId[32];    \r
    CHAR8   VolumeId[32];    \r
    UINT8   Unused2[8];      ///< Must be 0 \r
    UINT32  VolSpaceSize[2]; ///< the number of Logical Blocks\r
  } PrimaryVolume;\r
\r
} CDROM_VOLUME_DESCRIPTOR; \r
\r
///\r
/// Catalog Entry\r
///\r
typedef union {\r
  struct {\r
    CHAR8       Reserved[0x20];\r
  } Unknown;\r
\r
  ///\r
  /// Catalog validation entry (Catalog header)\r
  ///\r
  struct {\r
    UINT8   Indicator;       ///< Must be 01\r
    UINT8   PlatformId;\r
    UINT16  Reserved;\r
    CHAR8   ManufacId[24];\r
    UINT16  Checksum;\r
    UINT16  Id55AA;\r
  } Catalog;\r
\r
  ///\r
  /// Initial/Default Entry or Section Entry\r
  ///\r
  struct {\r
    UINT8   Indicator;       ///< 88 = Bootable, 00 = Not Bootable\r
    UINT8   MediaType : 4;\r
    UINT8   Reserved1 : 4;   ///< Must be 0\r
    UINT16  LoadSegment;\r
    UINT8   SystemType;\r
    UINT8   Reserved2;       ///< Must be 0\r
    UINT16  SectorCount;\r
    UINT32  Lba;\r
  } Boot;\r
\r
  ///\r
  /// Section Header Entry\r
  ///\r
  struct {\r
    UINT8   Indicator;       ///< 90 - Header, more header follw, 91 - Final Header\r
    UINT8   PlatformId;\r
    UINT16  SectionEntries;  ///< Number of section entries following this header\r
    CHAR8   Id[28];\r
  } Section;\r
\r
} ELTORITO_CATALOG;\r
\r
#pragma pack()\r
\r
#endif\r