1 files changed, 112 insertions, 0 deletions
diff --git a/OvmfPkg/VirtioFsDxe/DriverBinding.c b/OvmfPkg/VirtioFsDxe/DriverBinding.c
new file mode 100644
index 0000000000..ac0a6330f0
--- /dev/null
+++ b/OvmfPkg/VirtioFsDxe/DriverBinding.c
@@ -0,0 +1,112 @@
+/** @file
+  Provide EFI_SIMPLE_FILE_SYSTEM_PROTOCOL instances on virtio-fs devices.
+
+  Copyright (C) 2020, Red Hat, Inc.
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include <Library/BaseLib.h>                  // AsciiStrCmp()
+#include <Library/UefiBootServicesTableLib.h> // gBS
+#include <Protocol/ComponentName2.h>          // EFI_COMPONENT_NAME2_PROTOCOL
+#include <Protocol/DriverBinding.h>           // EFI_DRIVER_BINDING_PROTOCOL
+
+//
+// UEFI Driver Model protocol instances.
+//
+STATIC EFI_DRIVER_BINDING_PROTOCOL  mDriverBinding;
+STATIC EFI_COMPONENT_NAME2_PROTOCOL mComponentName2;
+
+//
+// UEFI Driver Model protocol member functions.
+//
+EFI_STATUS
+EFIAPI
+VirtioFsBindingSupported (
+  IN EFI_DRIVER_BINDING_PROTOCOL *This,
+  IN EFI_HANDLE                  ControllerHandle,
+  IN EFI_DEVICE_PATH_PROTOCOL    *RemainingDevicePath OPTIONAL
+  )
+{
+  return EFI_UNSUPPORTED;
+}
+
+EFI_STATUS
+EFIAPI
+VirtioFsBindingStart (
+  IN EFI_DRIVER_BINDING_PROTOCOL *This,
+  IN EFI_HANDLE                  ControllerHandle,
+  IN EFI_DEVICE_PATH_PROTOCOL    *RemainingDevicePath OPTIONAL
+  )
+{
+  return EFI_DEVICE_ERROR;
+}
+
+EFI_STATUS
+EFIAPI
+VirtioFsBindingStop (
+  IN EFI_DRIVER_BINDING_PROTOCOL *This,
+  IN EFI_HANDLE                  ControllerHandle,
+  IN UINTN                       NumberOfChildren,
+  IN EFI_HANDLE                  *ChildHandleBuffer OPTIONAL
+  )
+{
+  return EFI_DEVICE_ERROR;
+}
+
+EFI_STATUS
+EFIAPI
+VirtioFsGetDriverName (
+  IN  EFI_COMPONENT_NAME2_PROTOCOL *This,
+  IN  CHAR8                        *Language,
+  OUT CHAR16                       **DriverName
+  )
+{
+  if (AsciiStrCmp (Language, "en") != 0) {
+    return EFI_UNSUPPORTED;
+  }
+  *DriverName = L"Virtio Filesystem Driver";
+  return EFI_SUCCESS;
+}
+
+EFI_STATUS
+EFIAPI
+VirtioFsGetControllerName (
+  IN  EFI_COMPONENT_NAME2_PROTOCOL *This,
+  IN  EFI_HANDLE                   ControllerHandle,
+  IN  EFI_HANDLE                   ChildHandle OPTIONAL,
+  IN  CHAR8                        *Language,
+  OUT CHAR16                       **ControllerName
+  )
+{
+  return EFI_UNSUPPORTED;
+}
+
+//
+// Entry point of this driver.
+//
+EFI_STATUS
+EFIAPI
+VirtioFsEntryPoint (
+  IN EFI_HANDLE       ImageHandle,
+  IN EFI_SYSTEM_TABLE *SystemTable
+  )
+{
+  EFI_STATUS Status;
+
+  mDriverBinding.Supported           = VirtioFsBindingSupported;
+  mDriverBinding.Start               = VirtioFsBindingStart;
+  mDriverBinding.Stop                = VirtioFsBindingStop;
+  mDriverBinding.Version             = 0x10;
+  mDriverBinding.ImageHandle         = ImageHandle;
+  mDriverBinding.DriverBindingHandle = ImageHandle;
+
+  mComponentName2.GetDriverName      = VirtioFsGetDriverName;
+  mComponentName2.GetControllerName  = VirtioFsGetControllerName;
+  mComponentName2.SupportedLanguages = "en";
+
+  Status = gBS->InstallMultipleProtocolInterfaces (&ImageHandle,
+                  &gEfiDriverBindingProtocolGuid, &mDriverBinding,
+                  &gEfiComponentName2ProtocolGuid, &mComponentName2, NULL);
+  return Status;
+}