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350 lines
17 KiB
C
350 lines
17 KiB
C
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/** @file
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UEFI Platform to Driver Configuration Protocol is defined in UEFI specification.
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This is a protocol that is optionally produced by the platform and optionally consumed
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by a UEFI Driver in its Start() function. This protocol allows the driver to receive
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configuration information as part of being started.
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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 __PLATFORM_TO_DRIVER_CONFIGUARTION_H__
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#define __PLATFORM_TO_DRIVER_CONFIGUARTION_H__
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#define EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOCOL_GUID \
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{ 0x642cd590, 0x8059, 0x4c0a, { 0xa9, 0x58, 0xc5, 0xec, 0x7, 0xd2, 0x3c, 0x4b } }
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typedef struct _EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOCOL EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOCOL;
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/**
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The UEFI driver must call Query early in the Start() function
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before any time consuming operations are performed. If
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ChildHandle is NULL the driver is requesting information from
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the platform about the ControllerHandle that is being started.
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Information returned from Query may lead to the drivers Start()
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function failing.
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If the UEFI driver is a bus driver and producing a ChildHandle,
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the driver must call Query after the child handle has been created
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and an EFI_DEVICE_PATH_PROTOCOL has been placed on that handle,
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but before any time consuming operation is performed. If information
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return by Query may lead the driver to decide to not create the
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ChildHandle. The driver must then cleanup and remove the ChildHandle
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from the system.
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The UEFI driver repeatedly calls Query, processes the information
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returned by the platform, and calls Response passing in the
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arguments returned from Query. The Instance value passed into
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Response must be the same value passed into the corresponding
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call to Query. The UEFI driver must continuously call Query and
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Response until EFI_NOT_FOUND is returned by Query.
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If the UEFI driver does not recognize the ParameterTypeGuid, it
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calls Response with a ConfigurationAction of
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EfiPlatformConfigurationActionUnsupportedGuid. The UEFI driver
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must then continue calling Query and Response until EFI_NOT_FOUND
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is returned by Query. This gives the platform an opportunity to
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pass additional configuration settings using a different
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ParameterTypeGuid that may be supported by the driver.
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An Instance value of zero means return the first ParameterBlock
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in the set of unprocessed parameter blocks. The driver should
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increment the Instance value by one for each successive call to Query.
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@param This A pointer to the EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOCOL instance.
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@param ControllerHandle The handle the platform will return
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configuration information about.
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@param ChildHandle The handle of the child controller to
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return information on. This is an optional
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parameter that may be NULL. It will be
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NULL for device drivers and for bus
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drivers that attempt to get options for
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the bus controller. It will not be NULL
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for a bus driver that attempts to get
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options for one of its child controllers.
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@param Instance Pointer to the Instance value. Zero means
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return the first query data. The caller should
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increment this value by one each time to retrieve
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successive data.
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@param ParameterTypeGuid An EFI_GUID that defines the contents
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of ParameterBlock. UEFI drivers must
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use the ParameterTypeGuid to determine
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how to parse the ParameterBlock. The caller
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should not attempt to free ParameterTypeGuid.
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@param ParameterBlock The platform returns a pointer to the
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ParameterBlock structure which
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contains details about the
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configuration parameters specific to
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the ParameterTypeGuid. This structure
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is defined based on the protocol and
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may be different for different
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protocols. UEFI driver decodes this
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structure and its contents based on
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ParameterTypeGuid. ParameterBlock is
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allocated by the platform and the
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platform is responsible for freeing
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the ParameterBlock after Result is
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called.
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@param ParameterBlockSize The platform returns the size of
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the ParameterBlock in bytes.
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@retval EFI_SUCCESS The platform return parameter
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information for ControllerHandle.
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@retval EFI_NOT_FOUND No more unread Instance exists.
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@retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
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@retval EFI_INVALID_PARAMETER Instance is NULL.
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@retval EFI_DEVICE_ERROR A device error occurred while
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attempting to return parameter block
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information for the controller
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specified by ControllerHandle and
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ChildHandle.
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@retval EFI_OUT_RESOURCES There are not enough resources
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available to set the configuration
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options for the controller specified
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by ControllerHandle and ChildHandle.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PLATFORM_TO_DRIVER_CONFIGURATION_QUERY)(
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IN CONST EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOCOL *This,
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IN CONST EFI_HANDLE ControllerHandle,
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IN CONST EFI_HANDLE ChildHandle OPTIONAL,
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IN CONST UINTN *Instance,
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OUT EFI_GUID **ParameterTypeGuid,
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OUT VOID **ParameterBlock,
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OUT UINTN *ParameterBlockSize
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);
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typedef enum {
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///
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/// The controller specified by ControllerHandle is still
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/// in a usable state, and its configuration has been updated
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/// via parsing the ParameterBlock. If required by the
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/// parameter block, and the module supports an NVRAM store,
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/// the configuration information from PB was successfully
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/// saved to the NVRAM. No actions are required before
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/// this controller can be used again with the updated
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/// configuration settings.
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///
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EfiPlatformConfigurationActionNone = 0,
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///
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/// The driver has detected that the controller specified
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/// by ControllerHandle is not in a usable state and
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/// needs to be stopped. The calling agent can use the
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/// DisconnectControservice to perform this operation, and
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/// it should be performed as soon as possible.
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///
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EfiPlatformConfigurationActionStopController = 1,
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///
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/// This controller specified by ControllerHandle needs to
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/// be stopped and restarted before it can be used again.
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/// The calling agent can use the DisconnectController()
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/// and ConnectController() services to perform this
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/// operation. The restart operation can be delayed until
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/// all of the configuration options have been set.
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///
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EfiPlatformConfigurationActionRestartController = 2,
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///
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/// A configuration change has been made that requires the
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/// platform to be restarted before the controller
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/// specified by ControllerHandle can be used again. The
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/// calling agent can use the ResetSystem() services to
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/// perform this operation. The restart operation can be
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/// delayed until all of the configuration options have
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/// been set.
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///
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EfiPlatformConfigurationActionRestartPlatform = 3,
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///
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/// The controller specified by ControllerHandle is still
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/// in a usable state; its configuration has been updated
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/// via parsing the ParameterBlock. The driver tried to
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/// update the driver's private NVRAM store with
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/// information from ParameterBlock and failed. No actions
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/// are required before this controller can be used again
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/// with the updated configuration settings, but these
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/// configuration settings are not guaranteed to persist
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/// after ControllerHandle is stopped.
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///
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EfiPlatformConfigurationActionNvramFailed = 4,
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///
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/// The controller specified by ControllerHandle is still
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/// in a usable state; its configuration has not been updated
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/// via parsing the ParameterBlock. The driver did not support
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/// the ParameterBlock format identified by ParameterTypeGuid.
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/// No actions are required before this controller can be used
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/// again. On additional Query calls from this ControllerHandle,
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/// the platform should stop returning a ParameterBlock
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/// qualified by this same ParameterTypeGuid. If no other
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/// ParameterTypeGuid is supported by the platform, Query
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/// should return EFI_NOT_FOUND.
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///
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EfiPlatformConfigurationActionUnsupportedGuid = 5,
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EfiPlatformConfigurationActionMaximum
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} EFI_PLATFORM_CONFIGURATION_ACTION;
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/**
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The UEFI driver repeatedly calls Query, processes the
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information returned by the platform, and calls Response passing
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in the arguments returned from Query. The UEFI driver must
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continuously call Query until EFI_NOT_FOUND is returned. For
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every call to Query that returns EFI_SUCCESS a corrisponding
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call to Response is required passing in the same
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ContollerHandle, ChildHandle, Instance, ParameterTypeGuid,
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ParameterBlock, and ParameterBlockSize. The UEFI driver may
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update values in ParameterBlock based on rules defined by
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ParameterTypeGuid. The platform is responsible for freeing
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ParameterBlock and the UEFI driver must not try to free it.
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@param This A pointer to the EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOCOL instance.
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@param ControllerHandle The handle the driver is returning
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configuration information about.
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@param ChildHandle The handle of the child controller to
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return information on. This is an optional
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parameter that may be NULL. It will be
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NULL for device drivers, and for bus
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drivers that attempt to get options for
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the bus controller. It will not be NULL
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for a bus driver that attempts to get
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options for one of its child controllers.
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Instance Instance data returned from
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Query().
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@param Instance Instance data passed to Query().
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@param ParameterTypeGuid ParameterTypeGuid returned from Query.
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@param ParameterBlock ParameterBlock returned from Query.
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@param ParameterBlockSize The ParameterBlock size returned from Query.
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@param ConfigurationAction The driver tells the platform what
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action is required for ParameterBlock to
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take effect.
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@retval EFI_SUCCESS The platform return parameter information
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for ControllerHandle.
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@retval EFI_NOT_FOUND Instance was not found.
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@retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
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@retval EFI_INVALID_PARAMETER Instance is zero.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PLATFORM_TO_DRIVER_CONFIGURATION_RESPONSE)(
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IN CONST EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOCOL *This,
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IN CONST EFI_HANDLE ControllerHandle,
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IN CONST EFI_HANDLE ChildHandle OPTIONAL,
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IN CONST UINTN *Instance,
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IN CONST EFI_GUID *ParameterTypeGuid,
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IN CONST VOID *ParameterBlock,
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IN CONST UINTN ParameterBlockSize ,
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IN CONST EFI_PLATFORM_CONFIGURATION_ACTION ConfigurationAction
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);
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///
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/// The EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOCOL is used by the
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/// UEFI driver to query the platform for configuration information.
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/// The UEFI driver calls Query() multiple times to get
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/// configuration information from the platform. For every call to
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/// Query() there must be a matching call to Response() so the
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/// UEFI driver can inform the platform how it used the
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/// information passed in from Query(). It's legal for a UEFI
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/// driver to use Response() to inform the platform it does not
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/// understand the data returned via Query() and thus no action was
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/// taken.
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///
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struct _EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOCOL {
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EFI_PLATFORM_TO_DRIVER_CONFIGURATION_QUERY Query;
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EFI_PLATFORM_TO_DRIVER_CONFIGURATION_RESPONSE Response;
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};
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#define EFI_PLATFORM_TO_DRIVER_CONFIGURATION_CLP_GUID \
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{0x345ecc0e, 0xcb6, 0x4b75, { 0xbb, 0x57, 0x1b, 0x12, 0x9c, 0x47, 0x33,0x3e } }
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/**
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ParameterTypeGuid provides the support for parameters
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communicated through the DMTF SM CLP Specification 1.0 Final
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Standard to be used to configure the UEFI driver. In this
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section the producer of the
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EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOCOL is platform
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firmware and the consumer is the UEFI driver. Note: if future
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versions of the DMTF SM CLP Specification require changes to the
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parameter block definition, a newer ParameterTypeGuid will be
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used.
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**/
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typedef struct {
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CHAR8 *CLPCommand; ///< A pointer to the null-terminated UTF-8 string that specifies the DMTF SM CLP command
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///< line that the driver is required to parse and process when this function is called.
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///< See the DMTF SM CLP Specification 1.0 Final Standard for details on the
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///< format and syntax of the CLP command line string. CLPCommand buffer
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///< is allocated by the producer of the EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOOL.
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UINT32 CLPCommandLength; ///< The length of the CLP Command in bytes.
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CHAR8 *CLPReturnString; ///< A pointer to the null-terminated UTF-8 string that indicates the CLP return status
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///< that the driver is required to provide to the calling agent.
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///< The calling agent may parse and/ or pass
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///< this for processing and user feedback. The SM CLP Command Response string
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///< buffer is filled in by the UEFI driver in the "keyword=value" format
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///< described in the SM CLP Specification, unless otherwise requested via the SM
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///< CLP Coutput option in the Command Line string buffer. UEFI driver's support
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///< for this default "keyword=value" output format is required if the UEFI
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///< driver supports this protocol, while support for other SM CLP output
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///< formats is optional (the UEFI Driver should return an EFI_UNSUPPORTED if
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///< the SM CLP Coutput option requested by the caller is not supported by the
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///< UEFI Driver). CLPReturnString buffer is allocated by the consumer of the
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///< EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOC OL and undefined prior to the call to
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///< Response().
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UINT32 CLPReturnStringLength; ///< The length of the CLP return status string in bytes.
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UINT8 CLPCmdStatus; ///< SM CLP Command Status (see DMTF SM CLP Specification 1.0 Final Standard -
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///< Table 4) CLPErrorValue SM CLP Processing Error Value (see DMTF SM
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///< CLP Specification 1.0 Final Standard - Table 6). This field is filled in by
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///< the consumer of the EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOC
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///< OL and undefined prior to the call to Response().
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UINT8 CLPErrorValue; ///< SM CLP Processing Error Value (see DMTF SM CLP Specification 1.0 Final Standard - Table 6).
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///< This field is filled in by the consumer of the EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOCOL and undefined prior to the call to Response().
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UINT16 CLPMsgCode; ///< Bit 15: OEM Message Code Flag 0 = Message Code is an SM CLP Probable
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///< Cause Value. (see SM CLP Specification Table 11) 1 = Message Code is OEM
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///< Specific Bits 14-0: Message Code This field is filled in by the consumer of
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///< the EFI_PLATFORM_TO_DRIVER_CONFIGURATION_PROTOC OL and undefined prior to the call to
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///< Response().
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} EFI_CONFIGURE_CLP_PARAMETER_BLK;
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extern EFI_GUID gEfiPlatformToDriverConfigurationClpGuid;
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extern EFI_GUID gEfiPlatformToDriverConfigurationProtocolGuid;
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#endif
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