diff options
Diffstat (limited to 'EdkModulePkg/Universal/Disk/Partition/Dxe/ElTorito.c')
| -rw-r--r-- | EdkModulePkg/Universal/Disk/Partition/Dxe/ElTorito.c | 285 |
1 files changed, 0 insertions, 285 deletions
diff --git a/EdkModulePkg/Universal/Disk/Partition/Dxe/ElTorito.c b/EdkModulePkg/Universal/Disk/Partition/Dxe/ElTorito.c deleted file mode 100644 index 5d2a07ef8c..0000000000 --- a/EdkModulePkg/Universal/Disk/Partition/Dxe/ElTorito.c +++ /dev/null @@ -1,285 +0,0 @@ -/*++
-
-Copyright (c) 2006, Intel Corporation
-All rights reserved. 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.
-
-Module Name:
-
- ElTorito.c
-
-Abstract:
-
- Decode an El Torito formatted CD-ROM
-
-Revision History
-
---*/
-
-#include "Partition.h"
-
-EFI_STATUS
-PartitionInstallElToritoChildHandles (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE Handle,
- IN EFI_DISK_IO_PROTOCOL *DiskIo,
- IN EFI_BLOCK_IO_PROTOCOL *BlockIo,
- IN EFI_DEVICE_PATH_PROTOCOL *DevicePath
- )
-/*++
-
-Routine Description:
- Install child handles if the Handle supports El Torito format.
-
-Arguments:
- This - Calling context.
- Handle - Parent Handle
- DiskIo - Parent DiskIo interface
- BlockIo - Parent BlockIo interface
- DevicePath - Parent Device Path
-
-Returns:
- EFI_SUCCESS - some child handle(s) was added
- EFI_MEDIA_CHANGED - Media changed Detected
- !EFI_SUCCESS - no child handle was added
-
---*/
-{
- EFI_STATUS Status;
- UINT32 VolDescriptorLba;
- UINT32 Lba;
- EFI_BLOCK_IO_MEDIA *Media;
- CDROM_VOLUME_DESCRIPTOR *VolDescriptor;
- ELTORITO_CATALOG *Catalog;
- UINTN Check;
- UINTN Index;
- UINTN BootEntry;
- UINTN MaxIndex;
- UINT16 *CheckBuffer;
- CDROM_DEVICE_PATH CdDev;
- UINT32 SubBlockSize;
- UINT32 SectorCount;
- EFI_STATUS Found;
- UINT32 VolSpaceSize;
-
- Found = EFI_NOT_FOUND;
- Media = BlockIo->Media;
- VolSpaceSize = 0;
-
- //
- // CD_ROM has the fixed block size as 2048 bytes
- //
- if (Media->BlockSize != 2048) {
- return EFI_NOT_FOUND;
- }
-
- VolDescriptor = AllocatePool ((UINTN) Media->BlockSize);
-
- if (VolDescriptor == NULL) {
- return EFI_NOT_FOUND;
- }
-
- Catalog = (ELTORITO_CATALOG *) VolDescriptor;
-
- //
- // the ISO-9660 volume descriptor starts at 32k on the media
- // and CD_ROM has the fixed block size as 2048 bytes, so...
- //
- //
- // ((16*2048) / Media->BlockSize) - 1;
- //
- VolDescriptorLba = 15;
- //
- // Loop: handle one volume descriptor per time
- //
- while (TRUE) {
-
- VolDescriptorLba += 1;
- if (VolDescriptorLba > Media->LastBlock) {
- //
- // We are pointing past the end of the device so exit
- //
- break;
- }
-
- Status = BlockIo->ReadBlocks (
- BlockIo,
- Media->MediaId,
- VolDescriptorLba,
- Media->BlockSize,
- VolDescriptor
- );
- if (EFI_ERROR (Status)) {
- Found = Status;
- break;
- }
- //
- // Check for valid volume descriptor signature
- //
- if (VolDescriptor->Type == CDVOL_TYPE_END ||
- CompareMem (VolDescriptor->Id, CDVOL_ID, sizeof (VolDescriptor->Id)) != 0
- ) {
- //
- // end of Volume descriptor list
- //
- break;
- }
- //
- // Read the Volume Space Size from Primary Volume Descriptor 81-88 byte,
- // the 32-bit numerical values is stored in Both-byte orders
- //
- if (VolDescriptor->Type == CDVOL_TYPE_CODED) {
- VolSpaceSize = VolDescriptor->VolSpaceSize[0];
- }
- //
- // Is it an El Torito volume descriptor?
- //
- if (CompareMem (VolDescriptor->SystemId, CDVOL_ELTORITO_ID, sizeof (CDVOL_ELTORITO_ID) - 1) != 0) {
- continue;
- }
- //
- // Read in the boot El Torito boot catalog
- //
- Lba = UNPACK_INT32 (VolDescriptor->EltCatalog);
- if (Lba > Media->LastBlock) {
- continue;
- }
-
- Status = BlockIo->ReadBlocks (
- BlockIo,
- Media->MediaId,
- Lba,
- Media->BlockSize,
- Catalog
- );
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_ERROR, "EltCheckDevice: error reading catalog %r\n", Status));
- continue;
- }
- //
- // We don't care too much about the Catalog header's contents, but we do want
- // to make sure it looks like a Catalog header
- //
- if (Catalog->Catalog.Indicator != ELTORITO_ID_CATALOG || Catalog->Catalog.Id55AA != 0xAA55) {
- DEBUG ((EFI_D_ERROR, "EltCheckBootCatalog: El Torito boot catalog header IDs not correct\n"));
- continue;
- }
-
- Check = 0;
- CheckBuffer = (UINT16 *) Catalog;
- for (Index = 0; Index < sizeof (ELTORITO_CATALOG) / sizeof (UINT16); Index += 1) {
- Check += CheckBuffer[Index];
- }
-
- if (Check & 0xFFFF) {
- DEBUG ((EFI_D_ERROR, "EltCheckBootCatalog: El Torito boot catalog header checksum failed\n"));
- continue;
- }
-
- MaxIndex = Media->BlockSize / sizeof (ELTORITO_CATALOG);
- for (Index = 1, BootEntry = 1; Index < MaxIndex; Index += 1) {
- //
- // Next entry
- //
- Catalog += 1;
-
- //
- // Check this entry
- //
- if (Catalog->Boot.Indicator != ELTORITO_ID_SECTION_BOOTABLE || Catalog->Boot.Lba == 0) {
- continue;
- }
-
- SubBlockSize = 512;
- SectorCount = Catalog->Boot.SectorCount;
-
- switch (Catalog->Boot.MediaType) {
-
- case ELTORITO_NO_EMULATION:
- SubBlockSize = Media->BlockSize;
- break;
-
- case ELTORITO_HARD_DISK:
- break;
-
- case ELTORITO_12_DISKETTE:
- SectorCount = 0x50 * 0x02 * 0x0F;
- break;
-
- case ELTORITO_14_DISKETTE:
- SectorCount = 0x50 * 0x02 * 0x12;
- break;
-
- case ELTORITO_28_DISKETTE:
- SectorCount = 0x50 * 0x02 * 0x24;
- break;
-
- default:
- DEBUG ((EFI_D_INIT, "EltCheckDevice: unsupported El Torito boot media type %x\n", Catalog->Boot.MediaType));
- SectorCount = 0;
- SubBlockSize = Media->BlockSize;
- break;
- }
- //
- // Create child device handle
- //
- CdDev.Header.Type = MEDIA_DEVICE_PATH;
- CdDev.Header.SubType = MEDIA_CDROM_DP;
- SetDevicePathNodeLength (&CdDev.Header, sizeof (CdDev));
-
- if (Index == 1) {
- //
- // This is the initial/default entry
- //
- BootEntry = 0;
- }
-
- CdDev.BootEntry = (UINT32) BootEntry;
- BootEntry++;
- CdDev.PartitionStart = Catalog->Boot.Lba;
- if (SectorCount < 2) {
- //
- // When the SectorCount < 2, set the Partition as the whole CD.
- //
- if (VolSpaceSize > (Media->LastBlock + 1)) {
- CdDev.PartitionSize = (UINT32)(Media->LastBlock - Catalog->Boot.Lba + 1);
- } else {
- CdDev.PartitionSize = (UINT32)(VolSpaceSize - Catalog->Boot.Lba);
- }
- } else {
- CdDev.PartitionSize = DivU64x32 (
- MultU64x32 (
- SectorCount,
- SubBlockSize
- ) + Media->BlockSize - 1,
- Media->BlockSize
- );
- }
-
- Status = PartitionInstallChildHandle (
- This,
- Handle,
- DiskIo,
- BlockIo,
- DevicePath,
- (EFI_DEVICE_PATH_PROTOCOL *) &CdDev,
- Catalog->Boot.Lba,
- Catalog->Boot.Lba + CdDev.PartitionSize - 1,
- SubBlockSize,
- FALSE
- );
- if (!EFI_ERROR (Status)) {
- Found = EFI_SUCCESS;
- }
- }
- }
-
- FreePool (VolDescriptor);
-
- return Found;
-}
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