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135 lines
6.4 KiB
C
135 lines
6.4 KiB
C
/** @file
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Platform Driver Override protocol as defined in the UEFI 2.1 specification.
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Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL_H__
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#define __EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL_H__
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///
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/// Global ID for the Platform Driver Override Protocol
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///
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#define EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL_GUID \
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{ \
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0x6b30c738, 0xa391, 0x11d4, {0x9a, 0x3b, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d } \
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}
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typedef struct _EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL;
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//
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// Prototypes for the Platform Driver Override Protocol
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//
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/**
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Retrieves the image handle of the platform override driver for a controller in the system.
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@param This A pointer to the EFI_PLATFORM_DRIVER_OVERRIDE_
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PROTOCOL instance.
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@param ControllerHandle The device handle of the controller to check if a driver override
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exists.
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@param DriverImageHandle On input, a pointer to the previous driver image handle returned
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by GetDriver(). On output, a pointer to the next driver
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image handle.
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@retval EFI_SUCCESS The driver override for ControllerHandle was returned in
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DriverImageHandle.
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@retval EFI_NOT_FOUND A driver override for ControllerHandle was not found.
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@retval EFI_INVALID_PARAMETER The handle specified by ControllerHandle is NULL.
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@retval EFI_INVALID_PARAMETER DriverImageHandle is not a handle that was returned on a
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previous call to GetDriver().
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PLATFORM_DRIVER_OVERRIDE_GET_DRIVER)(
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IN EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN OUT EFI_HANDLE *DriverImageHandle
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);
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/**
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Retrieves the device path of the platform override driver for a controller in the system.
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@param This A pointer to the EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL instance.
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@param ControllerHandle The device handle of the controller to check if a driver override
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exists.
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@param DriverImagePath On input, a pointer to the previous driver device path returned by
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GetDriverPath(). On output, a pointer to the next driver
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device path. Passing in a pointer to NULL will return the first
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driver device path for ControllerHandle.
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@retval EFI_SUCCESS The driver override for ControllerHandle was returned in
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DriverImageHandle.
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@retval EFI_UNSUPPORTED The operation is not supported.
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@retval EFI_NOT_FOUND A driver override for ControllerHandle was not found.
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@retval EFI_INVALID_PARAMETER The handle specified by ControllerHandle is NULL.
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@retval EFI_INVALID_PARAMETER DriverImagePath is not a device path that was returned on a
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previous call to GetDriverPath().
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PLATFORM_DRIVER_OVERRIDE_GET_DRIVER_PATH)(
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IN EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN OUT EFI_DEVICE_PATH_PROTOCOL **DriverImagePath
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);
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/**
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Used to associate a driver image handle with a device path that was returned on a prior call to the
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GetDriverPath() service. This driver image handle will then be available through the
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GetDriver() service.
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@param This A pointer to the EFI_PLATFORM_DRIVER_OVERRIDE_
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PROTOCOL instance.
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@param ControllerHandle The device handle of the controller.
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@param DriverImagePath A pointer to the driver device path that was returned in a prior
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call to GetDriverPath().
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@param DriverImageHandle The driver image handle that was returned by LoadImage()
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when the driver specified by DriverImagePath was loaded
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into memory.
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@retval EFI_SUCCESS The association between DriverImagePath and
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DriverImageHandle was established for the controller specified
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by ControllerHandle.
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@retval EFI_UNSUPPORTED The operation is not supported.
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@retval EFI_NOT_FOUND DriverImagePath is not a device path that was returned on a prior
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call to GetDriverPath() for the controller specified by
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ControllerHandle.
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@retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
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@retval EFI_INVALID_PARAMETER DriverImagePath is not a valid device path.
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@retval EFI_INVALID_PARAMETER DriverImageHandle is not a valid image handle.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PLATFORM_DRIVER_OVERRIDE_DRIVER_LOADED)(
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IN EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_DEVICE_PATH_PROTOCOL *DriverImagePath,
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IN EFI_HANDLE DriverImageHandle
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);
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///
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/// This protocol matches one or more drivers to a controller. A platform driver
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/// produces this protocol, and it is installed on a separate handle. This protocol
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/// is used by the ConnectController() boot service to select the best driver
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/// for a controller. All of the drivers returned by this protocol have a higher
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/// precedence than drivers found from an EFI Bus Specific Driver Override Protocol
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/// or drivers found from the general UEFI driver Binding search algorithm. If more
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/// than one driver is returned by this protocol, then the drivers are returned in
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/// order from highest precedence to lowest precedence.
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///
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struct _EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL {
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EFI_PLATFORM_DRIVER_OVERRIDE_GET_DRIVER GetDriver;
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EFI_PLATFORM_DRIVER_OVERRIDE_GET_DRIVER_PATH GetDriverPath;
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EFI_PLATFORM_DRIVER_OVERRIDE_DRIVER_LOADED DriverLoaded;
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};
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extern EFI_GUID gEfiPlatformDriverOverrideProtocolGuid;
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#endif
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