diff options
Diffstat (limited to 'roms/edk2/MdeModulePkg/Universal/Disk/UdfDxe/Udf.c')
| -rw-r--r-- | roms/edk2/MdeModulePkg/Universal/Disk/UdfDxe/Udf.c | 331 |
1 files changed, 331 insertions, 0 deletions
diff --git a/roms/edk2/MdeModulePkg/Universal/Disk/UdfDxe/Udf.c b/roms/edk2/MdeModulePkg/Universal/Disk/UdfDxe/Udf.c new file mode 100644 index 000000000..d15f44971 --- /dev/null +++ b/roms/edk2/MdeModulePkg/Universal/Disk/UdfDxe/Udf.c @@ -0,0 +1,331 @@ +/** @file
+ UDF/ECMA-167 file system driver.
+
+ Copyright (C) 2014-2017 Paulo Alcantara <pcacjr@zytor.com>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include "Udf.h"
+
+//
+// UDF filesystem driver's Global Variables.
+//
+EFI_DRIVER_BINDING_PROTOCOL gUdfDriverBinding = {
+ UdfDriverBindingSupported,
+ UdfDriverBindingStart,
+ UdfDriverBindingStop,
+ 0x10,
+ NULL,
+ NULL
+};
+
+EFI_SIMPLE_FILE_SYSTEM_PROTOCOL gUdfSimpleFsTemplate = {
+ EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_REVISION,
+ UdfOpenVolume
+};
+
+/**
+ Test to see if this driver supports ControllerHandle. Any ControllerHandle
+ than contains a BlockIo and DiskIo protocol or a BlockIo2 protocol can be
+ supported.
+
+ @param[in] This Protocol instance pointer.
+ @param[in] ControllerHandle Handle of device to test.
+ @param[in] RemainingDevicePath Optional parameter use to pick a specific
+ child device to start.
+
+ @retval EFI_SUCCESS This driver supports this device.
+ @retval EFI_ALREADY_STARTED This driver is already running on this device.
+ @retval other This driver does not support this device.
+
+**/
+EFI_STATUS
+EFIAPI
+UdfDriverBindingSupported (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE ControllerHandle,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
+ )
+{
+ EFI_STATUS Status;
+ EFI_DISK_IO_PROTOCOL *DiskIo;
+
+ //
+ // Open DiskIo protocol on ControllerHandle
+ //
+ Status = gBS->OpenProtocol (
+ ControllerHandle,
+ &gEfiDiskIoProtocolGuid,
+ (VOID **)&DiskIo,
+ This->DriverBindingHandle,
+ ControllerHandle,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ //
+ // Close DiskIo protocol on ControllerHandle
+ //
+ gBS->CloseProtocol (
+ ControllerHandle,
+ &gEfiDiskIoProtocolGuid,
+ This->DriverBindingHandle,
+ ControllerHandle
+ );
+
+ //
+ // Test whether ControllerHandle supports BlockIo protocol
+ //
+ Status = gBS->OpenProtocol (
+ ControllerHandle,
+ &gEfiBlockIoProtocolGuid,
+ NULL,
+ This->DriverBindingHandle,
+ ControllerHandle,
+ EFI_OPEN_PROTOCOL_TEST_PROTOCOL
+ );
+
+ return Status;
+}
+
+/**
+ Start this driver on ControllerHandle by opening a Block IO or a Block IO2
+ or both, and Disk IO protocol, reading Device Path, and creating a child
+ handle with a Disk IO and device path protocol.
+
+ @param[in] This Protocol instance pointer.
+ @param[in] ControllerHandle Handle of device to bind driver to
+ @param[in] RemainingDevicePath Optional parameter use to pick a specific
+ child device to start.
+
+ @retval EFI_SUCCESS This driver is added to ControllerHandle.
+ @retval EFI_ALREADY_STARTED This driver is already running on
+ ControllerHandle.
+ @retval other This driver does not support this device.
+
+**/
+EFI_STATUS
+EFIAPI
+UdfDriverBindingStart (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE ControllerHandle,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
+ )
+{
+ EFI_TPL OldTpl;
+ EFI_STATUS Status;
+ EFI_BLOCK_IO_PROTOCOL *BlockIo;
+ EFI_DISK_IO_PROTOCOL *DiskIo;
+ PRIVATE_UDF_SIMPLE_FS_DATA *PrivFsData;
+
+ OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
+
+ //
+ // Open BlockIo protocol on ControllerHandle
+ //
+ Status = gBS->OpenProtocol (
+ ControllerHandle,
+ &gEfiBlockIoProtocolGuid,
+ (VOID **)&BlockIo,
+ This->DriverBindingHandle,
+ ControllerHandle,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Open DiskIo protocol on ControllerHandle
+ //
+ Status = gBS->OpenProtocol (
+ ControllerHandle,
+ &gEfiDiskIoProtocolGuid,
+ (VOID **)&DiskIo,
+ This->DriverBindingHandle,
+ ControllerHandle,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Check if ControllerHandle supports an UDF file system
+ //
+ Status = SupportUdfFileSystem (This, ControllerHandle);
+ if (EFI_ERROR (Status)) {
+ goto Exit;
+ }
+
+ //
+ // Initialize private file system structure
+ //
+ PrivFsData =
+ (PRIVATE_UDF_SIMPLE_FS_DATA *)
+ AllocateZeroPool (sizeof (PRIVATE_UDF_SIMPLE_FS_DATA));
+ if (PrivFsData == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto Exit;
+ }
+
+ //
+ // Create new child handle
+ //
+ PrivFsData->Signature = PRIVATE_UDF_SIMPLE_FS_DATA_SIGNATURE;
+ PrivFsData->BlockIo = BlockIo;
+ PrivFsData->DiskIo = DiskIo;
+ PrivFsData->Handle = ControllerHandle;
+
+ //
+ // Set up SimpleFs protocol
+ //
+ CopyMem ((VOID *)&PrivFsData->SimpleFs, (VOID *)&gUdfSimpleFsTemplate,
+ sizeof (EFI_SIMPLE_FILE_SYSTEM_PROTOCOL));
+
+ //
+ // Install child handle
+ //
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &PrivFsData->Handle,
+ &gEfiSimpleFileSystemProtocolGuid,
+ &PrivFsData->SimpleFs,
+ NULL
+ );
+
+Exit:
+ if (EFI_ERROR (Status)) {
+ //
+ // Close DiskIo protocol on ControllerHandle
+ //
+ gBS->CloseProtocol (
+ ControllerHandle,
+ &gEfiDiskIoProtocolGuid,
+ This->DriverBindingHandle,
+ ControllerHandle
+ );
+ //
+ // Close BlockIo protocol on ControllerHandle
+ //
+ gBS->CloseProtocol (
+ ControllerHandle,
+ &gEfiBlockIoProtocolGuid,
+ This->DriverBindingHandle,
+ ControllerHandle
+ );
+ }
+
+ gBS->RestoreTPL (OldTpl);
+
+ return Status;
+}
+
+/**
+ Stop this driver on ControllerHandle. Support stopping any child handles
+ created by this driver.
+
+ @param This Protocol instance pointer.
+ @param ControllerHandle Handle of device to stop driver on
+ @param NumberOfChildren Number of Handles in ChildHandleBuffer. If number of
+ children is zero stop the entire bus driver.
+ @param ChildHandleBuffer List of Child Handles to Stop.
+
+ @retval EFI_SUCCESS This driver is removed ControllerHandle
+ @retval other This driver was not removed from this device
+
+**/
+EFI_STATUS
+EFIAPI
+UdfDriverBindingStop (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE ControllerHandle,
+ IN UINTN NumberOfChildren,
+ IN EFI_HANDLE *ChildHandleBuffer
+ )
+{
+ PRIVATE_UDF_SIMPLE_FS_DATA *PrivFsData;
+ EFI_STATUS Status;
+ EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *SimpleFs;
+
+ //
+ // Open SimpleFs protocol on ControllerHandle
+ //
+ Status = gBS->OpenProtocol (
+ ControllerHandle,
+ &gEfiSimpleFileSystemProtocolGuid,
+ (VOID **)&SimpleFs,
+ This->DriverBindingHandle,
+ ControllerHandle,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
+ );
+ if (!EFI_ERROR (Status)) {
+ PrivFsData = PRIVATE_UDF_SIMPLE_FS_DATA_FROM_THIS (SimpleFs);
+
+ //
+ // Uninstall child handle
+ //
+ Status = gBS->UninstallMultipleProtocolInterfaces (
+ PrivFsData->Handle,
+ &gEfiSimpleFileSystemProtocolGuid,
+ &PrivFsData->SimpleFs,
+ NULL
+ );
+
+ FreePool ((VOID *)PrivFsData);
+ }
+
+ if (!EFI_ERROR (Status)) {
+ //
+ // Close DiskIo protocol on ControllerHandle
+ //
+ gBS->CloseProtocol (
+ ControllerHandle,
+ &gEfiDiskIoProtocolGuid,
+ This->DriverBindingHandle,
+ ControllerHandle
+ );
+ //
+ // Close BlockIo protocol on ControllerHandle
+ //
+ gBS->CloseProtocol (
+ ControllerHandle,
+ &gEfiBlockIoProtocolGuid,
+ This->DriverBindingHandle,
+ ControllerHandle
+ );
+ }
+
+ return Status;
+}
+
+/**
+ The user Entry Point for UDF file system driver. The user code starts with
+ this function.
+
+ @param[in] ImageHandle The firmware allocated handle for the EFI image.
+ @param[in] SystemTable A pointer to the EFI System Table.
+
+ @retval EFI_SUCCESS The entry point is executed successfully.
+ @retval other Some error occurs when executing this entry point.
+
+**/
+EFI_STATUS
+EFIAPI
+InitializeUdf (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+
+ Status = EfiLibInstallDriverBindingComponentName2 (
+ ImageHandle,
+ SystemTable,
+ &gUdfDriverBinding,
+ ImageHandle,
+ &gUdfComponentName,
+ &gUdfComponentName2
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ return Status;
+}
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