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//**********************************************************************
//**********************************************************************
//** **
//** (C)Copyright 1985-2009, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//**********************************************************************
//**********************************************************************
//**********************************************************************
// $Header: /Alaska/SOURCE/Core/CORE_DXE/Partition/Mbr.h 7 7/09/09 5:01p Oleksiyy $
//
// $Revision: 7 $
//
// $Date: 7/09/09 5:01p $
//**********************************************************************
// Revision History
// ----------------
// $Log: /Alaska/SOURCE/Core/CORE_DXE/Partition/Mbr.h $
//
// 7 7/09/09 5:01p Oleksiyy
// Files clean-up
//
// 6 1/08/08 3:10p Robert
//
// 5 1/08/08 3:08p Robert
//
// 4 1/07/08 4:21p Robert
// Updated for coding standard
//
// 3 4/25/07 11:53a Robert
// Updated for CHM and Coding Standard Compliance
//
// 2 4/24/05 12:45a Felixp
// Definitions of SIGNATURE_TYPE_xxx macroses removed since they are
// already defined in DevicePath.h
//
//**********************************************************************
//<AMI_FHDR_START>
//
// Name: <Mbr.h>
//
// Description: EFI Mbr Partition Generic Driver Header. This header
// contains Data structures and Definitions needed to recognize
// partitions in an MBR
//
//<AMI_FHDR_END>
//**********************************************************************
#ifndef _MBR_H
#define _MBR_H
#define MBR_SIGNATURE 0xaa55
#define NUM_MBR_PARTITIONS 4
// Type definitions for the Hard drive device path
#define MBR_TYPE_MASTER_BOOT_RECORD 0x01
#define MBR_TYPE_EFI_PARTITION_TABLE_HEADER 0x02
// Needed Partition Type definitions for MBR
#define NO_PARTITION 0x0
#define EXTENDED_PARTITION 0x05
#define WIN95_EXTENDED_PARTITION 0x0f
//<AMI_GHDR_START>
//------------------------------------------------------------------
// Name: Data_Structures
//
// Description:
// Data Structures needed for MBR
//
// MASTER_BOOT_RECORD - Data Structure definition of the
// MBR located in the first block on an MBR drive
//
// MBR_PARTITION - Data Structure definition for each
// partition in the MBR
//
//------------------------------------------------------------------
//<AMI_GHDR_END>
#pragma pack(1)
//<AMI_STHDR_START>
//============================================================================
// Structure: MBR_PARTITION
//
// Description: Data Structure that defines a partition within the MBR
//
// Fields:
// BootIndicator - UINT8 - indicates whether this partition is bootable
// StartHead - UINT8 - unused in EFI
// StartSector - UINT8 - unused in EFI
// StartTrack - UINT8 - unused in EFI
// OSType - UINT8 - defines type of the partition
// EndHead - UINT8 - unused in EFI
// EndSector - UINT8 - unused in EFI
// EndTrack - UINT8 - unused in EFI
// StartingLba - UINT32 - LBA where the partiton starts on the hard drive
// SizeInLba - UINT32 - LBA where the partiton ends on the hard drive
//
// Referral:
// None
//============================================================================
//<AMI_STHDR_END>
typedef struct _MBR_PARTITION
{
UINT8 BootIndicator;
UINT8 StartHead;
UINT8 StartSector;
UINT8 StartTrack;
UINT8 OSType;
UINT8 EndHead;
UINT8 EndSector;
UINT8 EndTrack;
UINT32 StartingLba;
UINT32 SizeInLba;
} MBR_PARTITION;
// MBR Partition table
//============================================================================
// Structure: MASTER_BOOT_RECORD
//
// Description: Data Structure that mimicks the structure of a Master Boot
// Record on a hard drive
//
// Fields:
// BootCode[440] - UINT8 - executable code in the first 440 bytes of a
// hard drive
// UniqueMbrSig - UINT32 - Uniques signature associated with the hard
// drive
// Unknown - UINT16 - an unknown portion of the data structure
// PartRec[4] - MBR_PARTITION - an array of partition entries that
// define the partitions that exist on the hard drive
// Sig - UINT16 - 0xaa55 - value that indicates this is an MBR
//
// Referral:
// MBR_PARTITION
//============================================================================
//<AMI_STHDR_END>
typedef struct _MASTER_BOOT_RECORD
{
UINT8 BootCode[440];
UINT32 UniqueMbrSig;
UINT16 Unknown;
MBR_PARTITION PartRec[4];
UINT16 Sig;
} MASTER_BOOT_RECORD;
#pragma pack()
#endif
//**********************************************************************
//**********************************************************************
//** **
//** (C)Copyright 1985-2009, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//**********************************************************************
//**********************************************************************
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