1#ifndef _EFI_PART_H
2#define _EFI_PART_H
3
4/*++
5
6Copyright (c)  1999 - 2002 Intel Corporation. All rights reserved
7This software and associated documentation (if any) is furnished
8under a license and may only be used or copied in accordance
9with the terms of the license. Except as permitted by such
10license, no part of this software or documentation may be
11reproduced, stored in a retrieval system, or transmitted in any
12form or by any means without the express written consent of
13Intel Corporation.
14
15Module Name:
16
17    efipart.h
18
19Abstract:
20    Info about disk partitions and Master Boot Records
21
22
23
24
25Revision History
26
27--*/
28
29//
30//
31//
32
33#define EFI_PARTITION   0xef
34#define MBR_SIZE        512
35
36#pragma pack(1)
37
38typedef struct {
39    UINT8       BootIndicator;
40    UINT8       StartHead;
41    UINT8       StartSector;
42    UINT8       StartTrack;
43    UINT8       OSIndicator;
44    UINT8       EndHead;
45    UINT8       EndSector;
46    UINT8       EndTrack;
47    UINT8       StartingLBA[4];
48    UINT8       SizeInLBA[4];
49} MBR_PARTITION_RECORD;
50
51#define EXTRACT_UINT32(D) (UINT32)(D[0] | (D[1] << 8) | (D[2] << 16) | (D[3] << 24))
52
53#define MBR_SIGNATURE           0xaa55
54#define MIN_MBR_DEVICE_SIZE     0x80000
55#define MBR_ERRATA_PAD          0x40000 // 128 MB
56
57#define MAX_MBR_PARTITIONS  4
58typedef struct {
59    UINT8                   BootStrapCode[440];
60    UINT8                   UniqueMbrSignature[4];
61    UINT8                   Unknown[2];
62    MBR_PARTITION_RECORD    Partition[MAX_MBR_PARTITIONS];
63    UINT16                  Signature;
64} MASTER_BOOT_RECORD;
65#pragma pack()
66
67
68#endif
69