MdeModulePkg: Move to new location

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Guo Mang <mang.guo@intel.com>

1 files changed, 0 insertions, 331 deletions

diff --git a/MdeModulePkg/Universal/Disk/PartitionDxe/Mbr.c b/MdeModulePkg/Universal/Disk/PartitionDxe/Mbr.c
deleted file mode 100644
index 4b0159c4fa..0000000000
--- a/MdeModulePkg/Universal/Disk/PartitionDxe/Mbr.c
+++ /dev/null
@@ -1,331 +0,0 @@
-/** @file

-  Decode a hard disk partitioned with the legacy MBR found on most PC's

-

-  MBR - Master Boot Record is in the first sector of a partitioned hard disk.

-        The MBR supports four partitions per disk. The MBR also contains legacy

-        code that is not run on an EFI system. The legacy code reads the 

-        first sector of the active partition into memory and 

-

-  BPB - BIOS Parameter Block is in the first sector of a FAT file system. 

-        The BPB contains information about the FAT file system. The BPB is 

-        always on the first sector of a media. The first sector also contains

-        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>

-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

-http://opensource.org/licenses/bsd-license.php

-

-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,

-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

-

-**/

-

-#include "Partition.h"

-

-/**

-  Test to see if the Mbr buffer is a valid MBR.

-

-  @param  Mbr         Parent Handle.

-  @param  LastLba     Last Lba address on the device.

-   

-  @retval TRUE        Mbr is a Valid MBR.

-  @retval FALSE       Mbr is not a Valid MBR.

-

-**/

-BOOLEAN

-PartitionValidMbr (

-  IN  MASTER_BOOT_RECORD      *Mbr,

-  IN  EFI_LBA                 LastLba

-  )

-{

-  UINT32  StartingLBA;

-  UINT32  EndingLBA;

-  UINT32  NewEndingLBA;

-  INTN    Index1;

-  INTN    Index2;

-  BOOLEAN MbrValid;

-

-  if (Mbr->Signature != MBR_SIGNATURE) {

-    return FALSE;

-  }

-  //

-  // The BPB also has this signature, so it can not be used alone.

-  //

-  MbrValid = FALSE;

-  for (Index1 = 0; Index1 < MAX_MBR_PARTITIONS; Index1++) {

-    if (Mbr->Partition[Index1].OSIndicator == 0x00 || UNPACK_UINT32 (Mbr->Partition[Index1].SizeInLBA) == 0) {

-      continue;

-    }

-

-    MbrValid    = TRUE;

-    StartingLBA = UNPACK_UINT32 (Mbr->Partition[Index1].StartingLBA);

-    EndingLBA   = StartingLBA + UNPACK_UINT32 (Mbr->Partition[Index1].SizeInLBA) - 1;

-    if (EndingLBA > LastLba) {

-      //

-      // Compatibility Errata:

-      //  Some systems try to hide drive space with their INT 13h driver

-      //  This does not hide space from the OS driver. This means the MBR

-      //  that gets created from DOS is smaller than the MBR created from

-      //  a real OS (NT & Win98). This leads to BlockIo->LastBlock being

-      //  wrong on some systems FDISKed by the OS.

-      //

-      // return FALSE since no block devices on a system are implemented

-      // with INT 13h

-      //

-    

-      DEBUG((EFI_D_INFO, "PartitionValidMbr: Bad MBR partition size EndingLBA(%1x) > LastLBA(%1x)\n", EndingLBA, LastLba));

-

-      return FALSE;

-    }

-

-    for (Index2 = Index1 + 1; Index2 < MAX_MBR_PARTITIONS; Index2++) {

-      if (Mbr->Partition[Index2].OSIndicator == 0x00 || UNPACK_UINT32 (Mbr->Partition[Index2].SizeInLBA) == 0) {

-        continue;

-      }

-

-      NewEndingLBA = UNPACK_UINT32 (Mbr->Partition[Index2].StartingLBA) + UNPACK_UINT32 (Mbr->Partition[Index2].SizeInLBA) - 1;

-      if (NewEndingLBA >= StartingLBA && UNPACK_UINT32 (Mbr->Partition[Index2].StartingLBA) <= EndingLBA) {

-        //

-        // This region overlaps with the Index1'th region

-        //

-        return FALSE;

-      }

-    }

-  }

-  //

-  // None of the regions overlapped so MBR is O.K.

-  //

-  return MbrValid;

-}

-

-

-/**

-  Install child handles if the Handle supports MBR format.

-

-  @param[in]  This              Calling context.

-  @param[in]  Handle            Parent Handle.

-  @param[in]  DiskIo            Parent DiskIo interface.

-  @param[in]  DiskIo2           Parent DiskIo2 interface.

-  @param[in]  BlockIo           Parent BlockIo interface.

-  @param[in]  BlockIo2          Parent BlockIo2 interface.

-  @param[in]  DevicePath        Parent Device Path.

-   

-  @retval EFI_SUCCESS       A child handle was added.

-  @retval EFI_MEDIA_CHANGED Media change was detected.

-  @retval Others            MBR partition was not found.

-

-**/

-EFI_STATUS

-PartitionInstallMbrChildHandles (

-  IN  EFI_DRIVER_BINDING_PROTOCOL  *This,

-  IN  EFI_HANDLE                   Handle,

-  IN  EFI_DISK_IO_PROTOCOL         *DiskIo,

-  IN  EFI_DISK_IO2_PROTOCOL        *DiskIo2,

-  IN  EFI_BLOCK_IO_PROTOCOL        *BlockIo,

-  IN  EFI_BLOCK_IO2_PROTOCOL       *BlockIo2,

-  IN  EFI_DEVICE_PATH_PROTOCOL     *DevicePath

-  )

-{

-  EFI_STATUS                Status;

-  MASTER_BOOT_RECORD        *Mbr;

-  UINT32                    ExtMbrStartingLba;

-  UINTN                     Index;

-  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;

-  UINT32                    MediaId;

-  EFI_LBA                   LastBlock;

-

-  Found           = EFI_NOT_FOUND;

-

-  BlockSize = BlockIo->Media->BlockSize;

-  MediaId   = BlockIo->Media->MediaId;

-  LastBlock = BlockIo->Media->LastBlock;

-

-  Mbr = AllocatePool (BlockSize);

-  if (Mbr == NULL) {

-    return Found;

-  }

-

-  Status = DiskIo->ReadDisk (

-                     DiskIo,

-                     MediaId,

-                     0,

-                     BlockSize,

-                     Mbr

-                     );

-  if (EFI_ERROR (Status)) {

-    Found = Status;

-    goto Done;

-  }

-  if (!PartitionValidMbr (Mbr, LastBlock)) {

-    goto Done;

-  }

-  //

-  // We have a valid mbr - add each partition

-  //

-  //

-  // Get starting and ending LBA of the parent block device.

-  //

-  LastDevicePathNode = NULL;

-  ZeroMem (&ParentHdDev, sizeof (ParentHdDev));

-  DevicePathNode = DevicePath;

-  while (!IsDevicePathEnd (DevicePathNode)) {

-    LastDevicePathNode  = DevicePathNode;

-    DevicePathNode      = NextDevicePathNode (DevicePathNode);

-  }

-

-  if (LastDevicePathNode != NULL) {

-    if (DevicePathType (LastDevicePathNode) == MEDIA_DEVICE_PATH &&

-        DevicePathSubType (LastDevicePathNode) == MEDIA_HARDDRIVE_DP

-        ) {

-      CopyMem (&ParentHdDev, LastDevicePathNode, sizeof (ParentHdDev));

-    } else {

-      LastDevicePathNode = NULL;

-    }

-  }

-

-  PartitionNumber = 1;

-

-  ZeroMem (&HdDev, sizeof (HdDev));

-  HdDev.Header.Type     = MEDIA_DEVICE_PATH;

-  HdDev.Header.SubType  = MEDIA_HARDDRIVE_DP;

-  SetDevicePathNodeLength (&HdDev.Header, sizeof (HdDev));

-  HdDev.MBRType         = MBR_TYPE_PCAT;

-  HdDev.SignatureType   = SIGNATURE_TYPE_MBR;

-

-  if (LastDevicePathNode == NULL) {

-    //

-    // This is a MBR, add each partition

-    //

-    for (Index = 0; Index < MAX_MBR_PARTITIONS; Index++) {

-      if (Mbr->Partition[Index].OSIndicator == 0x00 || UNPACK_UINT32 (Mbr->Partition[Index].SizeInLBA) == 0) {

-        //

-        // Don't use null MBR entries

-        //

-        continue;

-      }

-

-      if (Mbr->Partition[Index].OSIndicator == PMBR_GPT_PARTITION) {

-        //

-        // This is the guard MBR for the GPT. If you ever see a GPT disk with zero partitions you can get here.

-        //  We can not produce an MBR BlockIo for this device as the MBR spans the GPT headers. So formating 

-        //  this BlockIo would corrupt the GPT structures and require a recovery that would corrupt the format

-        //  that corrupted the GPT partition. 

-        //

-        continue;

-      }

-

-      HdDev.PartitionNumber = PartitionNumber ++;

-      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));

-

-      Status = PartitionInstallChildHandle (

-                This,

-                Handle,

-                DiskIo,

-                DiskIo2,

-                BlockIo,

-                BlockIo2,

-                DevicePath,

-                (EFI_DEVICE_PATH_PROTOCOL *) &HdDev,

-                HdDev.PartitionStart,

-                HdDev.PartitionStart + HdDev.PartitionSize - 1,

-                MBR_SIZE,

-                (BOOLEAN) (Mbr->Partition[Index].OSIndicator == EFI_PARTITION)

-                );

-

-      if (!EFI_ERROR (Status)) {

-        Found = EFI_SUCCESS;

-      }

-    }

-  } else {

-    //

-    // It's an extended partition. Follow the extended partition

-    // chain to get all the logical drives

-    //

-    ExtMbrStartingLba = 0;

-

-    do {

-

-      Status = DiskIo->ReadDisk (

-                         DiskIo,

-                         MediaId,

-                         MultU64x32 (ExtMbrStartingLba, BlockSize),

-                         BlockSize,

-                         Mbr

-                         );

-      if (EFI_ERROR (Status)) {

-        Found = Status;

-        goto Done;

-      }

-

-      if (UNPACK_UINT32 (Mbr->Partition[0].SizeInLBA) == 0) {

-        break;

-      }

-

-      if ((Mbr->Partition[0].OSIndicator == EXTENDED_DOS_PARTITION) ||

-          (Mbr->Partition[0].OSIndicator == EXTENDED_WINDOWS_PARTITION)) {

-        ExtMbrStartingLba = UNPACK_UINT32 (Mbr->Partition[0].StartingLBA);

-        continue;

-      }

-      HdDev.PartitionNumber = PartitionNumber ++;

-      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) ||

-          (HdDev.PartitionStart <= ParentHdDev.PartitionStart)) {

-        break;

-      }

-

-      //

-      // The signature in EBR(Extended Boot Record) should always be 0.

-      //

-      *((UINT32 *) &HdDev.Signature[0]) = 0;

-

-      Status = PartitionInstallChildHandle (

-                 This,

-                 Handle,

-                 DiskIo,

-                 DiskIo2,

-                 BlockIo,

-                 BlockIo2,

-                 DevicePath,

-                 (EFI_DEVICE_PATH_PROTOCOL *) &HdDev,

-                 HdDev.PartitionStart - ParentHdDev.PartitionStart,

-                 HdDev.PartitionStart - ParentHdDev.PartitionStart + HdDev.PartitionSize - 1,

-                 MBR_SIZE,

-                 (BOOLEAN) (Mbr->Partition[0].OSIndicator == EFI_PARTITION)

-                 );

-      if (!EFI_ERROR (Status)) {

-        Found = EFI_SUCCESS;

-      }

-

-      if ((Mbr->Partition[1].OSIndicator != EXTENDED_DOS_PARTITION) &&

-          (Mbr->Partition[1].OSIndicator != EXTENDED_WINDOWS_PARTITION)

-          ) {

-        break;

-      }

-

-      ExtMbrStartingLba = UNPACK_UINT32 (Mbr->Partition[1].StartingLBA);

-      //

-      // Don't allow partition to be self referencing

-      //

-      if (ExtMbrStartingLba == 0) {

-        break;

-      }

-    } while (ExtMbrStartingLba  < ParentHdDev.PartitionSize);

-  }

-

-Done:

-  FreePool (Mbr);

-

-  return Found;

-}