tyler.durden
/
audk
mirror of https://github.com/acidanthera/audk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

MdeModulePkg/Partition: Use proper partition number for MBR 

UEFI Spec 2.3.1.D Section 9.3.5.1 says Partitions are numbered
according to their entry in their respective partition table,
starting with 1.
Update the code for MBR partition to follow this rule.

Ref: https://github.com/tianocore/edk2/issues/50

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
This commit is contained in:
Ruiyu Ni 2016-02-18 14:25:56 +08:00
parent cc260e629c
commit e665a69d9d
1 changed files with 4 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
MdeModulePkg/Universal/Disk/PartitionDxe/Mbr.c
View File

@ -12,7 +12,7 @@
the legacy boot strap code.
Copyright (c) 2014, Hewlett-Packard Development Company, L.P.<BR>
Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@ -136,7 +136,6 @@ PartitionInstallMbrChildHandles (
HARDDRIVE_DEVICE_PATH HdDev;
HARDDRIVE_DEVICE_PATH ParentHdDev;
EFI_STATUS Found;
UINT32 PartitionNumber;
EFI_DEVICE_PATH_PROTOCOL *DevicePathNode;
EFI_DEVICE_PATH_PROTOCOL *LastDevicePathNode;
UINT32 BlockSize;
@ -192,8 +191,6 @@ PartitionInstallMbrChildHandles (
}
}
PartitionNumber = 1;
ZeroMem (&HdDev, sizeof (HdDev));
HdDev.Header.Type = MEDIA_DEVICE_PATH;
HdDev.Header.SubType = MEDIA_HARDDRIVE_DP;
@ -223,7 +220,7 @@ PartitionInstallMbrChildHandles (
continue;
}
HdDev.PartitionNumber = PartitionNumber ++;
HdDev.PartitionNumber = Index + 1;
HdDev.PartitionStart = UNPACK_UINT32 (Mbr->Partition[Index].StartingLBA);
HdDev.PartitionSize = UNPACK_UINT32 (Mbr->Partition[Index].SizeInLBA);
CopyMem (HdDev.Signature, &(Mbr->UniqueMbrSignature[0]), sizeof (Mbr->UniqueMbrSignature));
@ -252,6 +249,7 @@ PartitionInstallMbrChildHandles (
// It's an extended partition. Follow the extended partition
// chain to get all the logical drives
//
Index = 0;
ExtMbrStartingLba = 0;
do {
@ -277,7 +275,7 @@ PartitionInstallMbrChildHandles (
ExtMbrStartingLba = UNPACK_UINT32 (Mbr->Partition[0].StartingLBA);
continue;
}
HdDev.PartitionNumber = PartitionNumber ++;
HdDev.PartitionNumber = ++Index;
HdDev.PartitionStart = UNPACK_UINT32 (Mbr->Partition[0].StartingLBA) + ExtMbrStartingLba + ParentHdDev.PartitionStart;
HdDev.PartitionSize = UNPACK_UINT32 (Mbr->Partition[0].SizeInLBA);
if ((HdDev.PartitionStart + HdDev.PartitionSize - 1 >= ParentHdDev.PartitionStart + ParentHdDev.PartitionSize) ||