mirror of https://github.com/acidanthera/audk.git
113 lines
3.0 KiB
C
113 lines
3.0 KiB
C
/** @file
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Provide EFI_SIMPLE_FILE_SYSTEM_PROTOCOL instances on virtio-fs devices.
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Copyright (C) 2020, Red Hat, Inc.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Library/BaseLib.h> // AsciiStrCmp()
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#include <Library/UefiBootServicesTableLib.h> // gBS
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#include <Protocol/ComponentName2.h> // EFI_COMPONENT_NAME2_PROTOCOL
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#include <Protocol/DriverBinding.h> // EFI_DRIVER_BINDING_PROTOCOL
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//
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// UEFI Driver Model protocol instances.
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//
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STATIC EFI_DRIVER_BINDING_PROTOCOL mDriverBinding;
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STATIC EFI_COMPONENT_NAME2_PROTOCOL mComponentName2;
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//
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// UEFI Driver Model protocol member functions.
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//
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EFI_STATUS
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EFIAPI
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VirtioFsBindingSupported (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
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)
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{
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return EFI_UNSUPPORTED;
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}
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EFI_STATUS
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EFIAPI
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VirtioFsBindingStart (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
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)
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{
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return EFI_DEVICE_ERROR;
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}
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EFI_STATUS
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EFIAPI
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VirtioFsBindingStop (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN UINTN NumberOfChildren,
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IN EFI_HANDLE *ChildHandleBuffer OPTIONAL
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)
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{
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return EFI_DEVICE_ERROR;
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}
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EFI_STATUS
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EFIAPI
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VirtioFsGetDriverName (
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IN EFI_COMPONENT_NAME2_PROTOCOL *This,
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IN CHAR8 *Language,
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OUT CHAR16 **DriverName
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)
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{
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if (AsciiStrCmp (Language, "en") != 0) {
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return EFI_UNSUPPORTED;
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}
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*DriverName = L"Virtio Filesystem Driver";
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return EFI_SUCCESS;
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}
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EFI_STATUS
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EFIAPI
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VirtioFsGetControllerName (
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IN EFI_COMPONENT_NAME2_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_HANDLE ChildHandle OPTIONAL,
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IN CHAR8 *Language,
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OUT CHAR16 **ControllerName
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)
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{
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return EFI_UNSUPPORTED;
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}
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//
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// Entry point of this driver.
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//
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EFI_STATUS
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EFIAPI
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VirtioFsEntryPoint (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_STATUS Status;
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mDriverBinding.Supported = VirtioFsBindingSupported;
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mDriverBinding.Start = VirtioFsBindingStart;
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mDriverBinding.Stop = VirtioFsBindingStop;
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mDriverBinding.Version = 0x10;
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mDriverBinding.ImageHandle = ImageHandle;
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mDriverBinding.DriverBindingHandle = ImageHandle;
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mComponentName2.GetDriverName = VirtioFsGetDriverName;
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mComponentName2.GetControllerName = VirtioFsGetControllerName;
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mComponentName2.SupportedLanguages = "en";
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Status = gBS->InstallMultipleProtocolInterfaces (&ImageHandle,
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&gEfiDriverBindingProtocolGuid, &mDriverBinding,
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&gEfiComponentName2ProtocolGuid, &mComponentName2, NULL);
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return Status;
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}
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