sys/boot/efi/include/efipart.h

   1 /*
   2  * $FreeBSD: src/sys/boot/efi/include/efipart.h,v 1.2 2002/05/19 03:17:20 marcel Exp $
   3  * $DragonFly: src/sys/boot/efi/include/efipart.h,v 1.1 2003/11/10 06:08:32 dillon Exp $
   4  */
   5 #ifndef _EFI_PART_H
   6 #define _EFI_PART_H
   7
   8 /*++
   9
  10 Copyright (c) 1998  Intel Corporation
  11
  12 Module Name:
  13
  14     efipart.h
  15
  16 Abstract:
  17     Info about disk partitions and Master Boot Records
  18
  19
  20
  21
  22 Revision History
  23
  24 --*/
  25
  26 #define EFI_PARTITION   0xef
  27 #define MBR_SIZE        512
  28
  29 #pragma pack(1)
  30
  31 typedef struct {
  32     UINT8       BootIndicator;
  33     UINT8       StartHead;
  34     UINT8       StartSector;
  35     UINT8       StartTrack;
  36     UINT8       OSIndicator;
  37     UINT8       EndHead;
  38     UINT8       EndSector;
  39     UINT8       EndTrack;
  40     UINT8       StartingLBA[4];
  41     UINT8       SizeInLBA[4];
  42 } MBR_PARTITION_RECORD;
  43
  44 #define EXTRACT_UINT32(D) (UINT32)(D[0] | (D[1] << 8) | (D[2] << 16) | (D[3] << 24))
  45
  46 #define MBR_SIGNATURE           0xaa55
  47 #define MIN_MBR_DEVICE_SIZE     0x80000
  48 #define MBR_ERRATA_PAD          0x40000 /* 128 MB */
  49
  50 #define MAX_MBR_PARTITIONS  4
  51 typedef struct {
  52     UINT8                   BootStrapCode[440];
  53     UINT8                   UniqueMbrSignature[4];
  54     UINT8                   Unknown[2];
  55     MBR_PARTITION_RECORD    Partition[MAX_MBR_PARTITIONS];
  56     UINT16                  Signature;
  57 } MASTER_BOOT_RECORD;
  58 #pragma pack()
  59
  60
  61 #endif