/** @file Partition driver that produces logical BlockIo devices from a physical BlockIo device. The logical BlockIo devices are based on the format of the raw block devices media. Currently "El Torito CD-ROM", UDF, Legacy MBR, and GPT partition schemes are supported. Copyright (c) 2018 Qualcomm Datacenter Technologies, Inc. Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent **/ #ifndef _PARTITION_H_ #define _PARTITION_H_ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include // // Partition private data // #define PARTITION_PRIVATE_DATA_SIGNATURE SIGNATURE_32 ('P', 'a', 'r', 't') typedef struct { UINT64 Signature; EFI_HANDLE Handle; EFI_DEVICE_PATH_PROTOCOL *DevicePath; EFI_BLOCK_IO_PROTOCOL BlockIo; EFI_BLOCK_IO2_PROTOCOL BlockIo2; EFI_BLOCK_IO_MEDIA Media; EFI_BLOCK_IO_MEDIA Media2;//For BlockIO2 EFI_PARTITION_INFO_PROTOCOL PartitionInfo; EFI_DISK_IO_PROTOCOL *DiskIo; EFI_DISK_IO2_PROTOCOL *DiskIo2; EFI_BLOCK_IO_PROTOCOL *ParentBlockIo; EFI_BLOCK_IO2_PROTOCOL *ParentBlockIo2; UINT64 Start; UINT64 End; UINT32 BlockSize; BOOLEAN InStop; EFI_GUID TypeGuid; } PARTITION_PRIVATE_DATA; typedef struct { EFI_DISK_IO2_TOKEN DiskIo2Token; EFI_BLOCK_IO2_TOKEN *BlockIo2Token; } PARTITION_ACCESS_TASK; #define PARTITION_DEVICE_FROM_BLOCK_IO_THIS(a) CR (a, PARTITION_PRIVATE_DATA, BlockIo, PARTITION_PRIVATE_DATA_SIGNATURE) #define PARTITION_DEVICE_FROM_BLOCK_IO2_THIS(a) CR (a, PARTITION_PRIVATE_DATA, BlockIo2, PARTITION_PRIVATE_DATA_SIGNATURE) // // Global Variables // extern EFI_DRIVER_BINDING_PROTOCOL gPartitionDriverBinding; extern EFI_COMPONENT_NAME_PROTOCOL gPartitionComponentName; extern EFI_COMPONENT_NAME2_PROTOCOL gPartitionComponentName2; // // Extract INT32 from char array // #define UNPACK_INT32(a) (INT32)( (((UINT8 *) a)[0] << 0) | \ (((UINT8 *) a)[1] << 8) | \ (((UINT8 *) a)[2] << 16) | \ (((UINT8 *) a)[3] << 24) ) // // Extract UINT32 from char array // #define UNPACK_UINT32(a) (UINT32)( (((UINT8 *) a)[0] << 0) | \ (((UINT8 *) a)[1] << 8) | \ (((UINT8 *) a)[2] << 16) | \ (((UINT8 *) a)[3] << 24) ) // // GPT Partition Entry Status // typedef struct { BOOLEAN OutOfRange; BOOLEAN Overlap; BOOLEAN OsSpecific; } EFI_PARTITION_ENTRY_STATUS; // // Function Prototypes // /** Test to see if this driver supports ControllerHandle. Any ControllerHandle than contains a BlockIo and DiskIo protocol can be supported. @param This Protocol instance pointer. @param ControllerHandle Handle of device to test @param 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 PartitionDriverBindingSupported ( IN EFI_DRIVER_BINDING_PROTOCOL *This, IN EFI_HANDLE ControllerHandle, IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath ); /** Start this driver on ControllerHandle by opening a Block IO and Disk IO protocol, reading Device Path, and creating a child handle with a Disk IO and device path protocol. @param This Protocol instance pointer. @param ControllerHandle Handle of device to bind driver to @param 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 PartitionDriverBindingStart ( IN EFI_DRIVER_BINDING_PROTOCOL *This, IN EFI_HANDLE ControllerHandle, IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath ); /** 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 PartitionDriverBindingStop ( IN EFI_DRIVER_BINDING_PROTOCOL *This, IN EFI_HANDLE ControllerHandle, IN UINTN NumberOfChildren, IN EFI_HANDLE *ChildHandleBuffer ); // // EFI Component Name Functions // /** Retrieves a Unicode string that is the user readable name of the driver. This function retrieves the user readable name of a driver in the form of a Unicode string. If the driver specified by This has a user readable name in the language specified by Language, then a pointer to the driver name is returned in DriverName, and EFI_SUCCESS is returned. If the driver specified by This does not support the language specified by Language, then EFI_UNSUPPORTED is returned. @param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or EFI_COMPONENT_NAME_PROTOCOL instance. @param Language[in] A pointer to a Null-terminated ASCII string array indicating the language. This is the language of the driver name that the caller is requesting, and it must match one of the languages specified in SupportedLanguages. The number of languages supported by a driver is up to the driver writer. Language is specified in RFC 4646 or ISO 639-2 language code format. @param DriverName[out] A pointer to the Unicode string to return. This Unicode string is the name of the driver specified by This in the language specified by Language. @retval EFI_SUCCESS The Unicode string for the Driver specified by This and the language specified by Language was returned in DriverName. @retval EFI_INVALID_PARAMETER Language is NULL. @retval EFI_INVALID_PARAMETER DriverName is NULL. @retval EFI_UNSUPPORTED The driver specified by This does not support the language specified by Language. **/ EFI_STATUS EFIAPI PartitionComponentNameGetDriverName ( IN EFI_COMPONENT_NAME_PROTOCOL *This, IN CHAR8 *Language, OUT CHAR16 **DriverName ); /** Retrieves a Unicode string that is the user readable name of the controller that is being managed by a driver. This function retrieves the user readable name of the controller specified by ControllerHandle and ChildHandle in the form of a Unicode string. If the driver specified by This has a user readable name in the language specified by Language, then a pointer to the controller name is returned in ControllerName, and EFI_SUCCESS is returned. If the driver specified by This is not currently managing the controller specified by ControllerHandle and ChildHandle, then EFI_UNSUPPORTED is returned. If the driver specified by This does not support the language specified by Language, then EFI_UNSUPPORTED is returned. @param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or EFI_COMPONENT_NAME_PROTOCOL instance. @param ControllerHandle[in] The handle of a controller that the driver specified by This is managing. This handle specifies the controller whose name is to be returned. @param ChildHandle[in] The handle of the child controller to retrieve the name of. This is an optional parameter that may be NULL. It will be NULL for device drivers. It will also be NULL for a bus drivers that wish to retrieve the name of the bus controller. It will not be NULL for a bus driver that wishes to retrieve the name of a child controller. @param Language[in] A pointer to a Null-terminated ASCII string array indicating the language. This is the language of the driver name that the caller is requesting, and it must match one of the languages specified in SupportedLanguages. The number of languages supported by a driver is up to the driver writer. Language is specified in RFC 4646 or ISO 639-2 language code format. @param ControllerName[out] A pointer to the Unicode string to return. This Unicode string is the name of the controller specified by ControllerHandle and ChildHandle in the language specified by Language from the point of view of the driver specified by This. @retval EFI_SUCCESS The Unicode string for the user readable name in the language specified by Language for the driver specified by This was returned in DriverName. @retval EFI_INVALID_PARAMETER ControllerHandle is not a valid EFI_HANDLE. @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid EFI_HANDLE. @retval EFI_INVALID_PARAMETER Language is NULL. @retval EFI_INVALID_PARAMETER ControllerName is NULL. @retval EFI_UNSUPPORTED The driver specified by This is not currently managing the controller specified by ControllerHandle and ChildHandle. @retval EFI_UNSUPPORTED The driver specified by This does not support the language specified by Language. **/ EFI_STATUS EFIAPI PartitionComponentNameGetControllerName ( IN EFI_COMPONENT_NAME_PROTOCOL *This, IN EFI_HANDLE ControllerHandle, IN EFI_HANDLE ChildHandle OPTIONAL, IN CHAR8 *Language, OUT CHAR16 **ControllerName ); /** Create a child handle for a logical block device that represents the bytes Start to End of the Parent Block IO device. @param[in] This Protocol instance pointer. @param[in] ParentHandle Parent Handle for new child. @param[in] ParentDiskIo Parent DiskIo interface. @param[in] ParentDiskIo2 Parent DiskIo2 interface. @param[in] ParentBlockIo Parent BlockIo interface. @param[in] ParentBlockIo2 Parent BlockIo2 interface. @param[in] ParentDevicePath Parent Device Path. @param[in] DevicePathNode Child Device Path node. @param[in] PartitionInfo Child Partition Information interface. @param[in] Start Start Block. @param[in] End End Block. @param[in] BlockSize Child block size. @param[in] TypeGuid Parition Type Guid. @retval EFI_SUCCESS A child handle was added. @retval other A child handle was not added. **/ EFI_STATUS PartitionInstallChildHandle ( IN EFI_DRIVER_BINDING_PROTOCOL *This, IN EFI_HANDLE ParentHandle, IN EFI_DISK_IO_PROTOCOL *ParentDiskIo, IN EFI_DISK_IO2_PROTOCOL *ParentDiskIo2, IN EFI_BLOCK_IO_PROTOCOL *ParentBlockIo, IN EFI_BLOCK_IO2_PROTOCOL *ParentBlockIo2, IN EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath, IN EFI_DEVICE_PATH_PROTOCOL *DevicePathNode, IN EFI_PARTITION_INFO_PROTOCOL *PartitionInfo, IN EFI_LBA Start, IN EFI_LBA End, IN UINT32 BlockSize, IN EFI_GUID *TypeGuid ); /** Test to see if there is any child on ControllerHandle. @param[in] ControllerHandle Handle of device to test. @retval TRUE There are children on the ControllerHandle. @retval FALSE No child is on the ControllerHandle. **/ BOOLEAN HasChildren ( IN EFI_HANDLE ControllerHandle ); /** Install child handles if the Handle supports GPT partition structure. @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 Valid GPT disk. @retval EFI_MEDIA_CHANGED Media changed Detected. @retval EFI_INVALID_PARAMETER If both BlockIo and BlockIo2 are NULL; @retval other Not a valid GPT disk. **/ EFI_STATUS PartitionInstallGptChildHandles ( 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 ); /** Install child handles if the Handle supports El Torito 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 Child handle(s) was added. @retval EFI_MEDIA_CHANGED Media changed Detected. @retval other no child handle was added. **/ EFI_STATUS PartitionInstallElToritoChildHandles ( 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 ); /** 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 ); /** Install child handles if the Handle supports UDF/ECMA-167 volume 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 Child handle(s) was added. @retval EFI_MEDIA_CHANGED Media changed Detected. @retval other no child handle was added. **/ EFI_STATUS PartitionInstallUdfChildHandles ( 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 ); typedef EFI_STATUS (*PARTITION_DETECT_ROUTINE) ( 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 ); #endif