sys/arch/ia64/stand/efi/include/efipart.h

   1 /*      $NetBSD: efipart.h,v 1.1 2006/04/07 14:21:29 cherry Exp $       */
   2 /* $FreeBSD: src/sys/boot/efi/include/efipart.h,v 1.2 2002/05/19 03:17:20 marcel Exp $ */
   3
   4 #ifndef _EFI_PART_H
   5 #define _EFI_PART_H
   6
   7 /*++
   8
   9 Copyright (c) 1998  Intel Corporation
  10
  11 Module Name:
  12
  13     efipart.h
  14
  15 Abstract:
  16     Info about disk partitions and Master Boot Records
  17
  18
  19
  20
  21 Revision History
  22
  23 --*/
  24
  25 #define EFI_PARTITION   0xef
  26 #define MBR_SIZE        512
  27
  28 #pragma pack(1)
  29
  30 typedef struct {
  31     UINT8       BootIndicator;
  32     UINT8       StartHead;
  33     UINT8       StartSector;
  34     UINT8       StartTrack;
  35     UINT8       OSIndicator;
  36     UINT8       EndHead;
  37     UINT8       EndSector;
  38     UINT8       EndTrack;
  39     UINT8       StartingLBA[4];
  40     UINT8       SizeInLBA[4];
  41 } MBR_PARTITION_RECORD;
  42
  43 #define EXTRACT_UINT32(D) (UINT32)(D[0] | (D[1] << 8) | (D[2] << 16) | (D[3] << 24))
  44
  45 #define MBR_SIGNATURE           0xaa55
  46 #define MIN_MBR_DEVICE_SIZE     0x80000
  47 #define MBR_ERRATA_PAD          0x40000 /* 128 MB */
  48
  49 #define MAX_MBR_PARTITIONS  4
  50 typedef struct {
  51     UINT8                   BootStrapCode[440];
  52     UINT8                   UniqueMbrSignature[4];
  53     UINT8                   Unknown[2];
  54     MBR_PARTITION_RECORD    Partition[MAX_MBR_PARTITIONS];
  55     UINT16                  Signature;
  56 } MASTER_BOOT_RECORD;
  57 #pragma pack()
  58
  59
  60 #endif