[mirror_edk2.git] / RedfishPkg / RedfishConfigHandler / RedfishConfigHandlerDriver.c

/** @file\r
  The UEFI driver model driver which is responsible for locating the\r
  Redfish service through Redfish host interface and executing EDKII\r
  Redfish feature drivers.\r
\r
  Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>\r
  (C) Copyright 2021 Hewlett Packard Enterprise Development LP<BR>\r
\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include "RedfishConfigHandlerDriver.h"\r
\r
EFI_EVENT  gEfiRedfishDiscoverProtocolEvent = NULL;\r
\r
//\r
// Variables for using RFI Redfish Discover Protocol\r
//\r
VOID                           *gEfiRedfishDiscoverRegistration;\r
EFI_HANDLE                     gEfiRedfishDiscoverControllerHandle = NULL;\r
EFI_REDFISH_DISCOVER_PROTOCOL  *gEfiRedfishDiscoverProtocol        = NULL;\r
BOOLEAN                        gRedfishDiscoverActivated           = FALSE;\r
BOOLEAN                        gRedfishServiceDiscovered           = FALSE;\r
//\r
// Network interfaces discovered by EFI Redfish Discover Protocol.\r
//\r
UINTN                                   gNumberOfNetworkInterfaces;\r
EFI_REDFISH_DISCOVER_NETWORK_INTERFACE  *gNetworkInterfaceInstances = NULL;\r
EFI_REDFISH_DISCOVERED_TOKEN            *gRedfishDiscoveredToken    = NULL;\r
\r
///\r
/// Driver Binding Protocol instance\r
///\r
EFI_DRIVER_BINDING_PROTOCOL  gRedfishConfigDriverBinding = {\r
  RedfishConfigDriverBindingSupported,\r
  RedfishConfigDriverBindingStart,\r
  RedfishConfigDriverBindingStop,\r
  REDFISH_CONFIG_VERSION,\r
  NULL,\r
  NULL\r
};\r
\r
/**\r
  Stop acquiring Redfish service.\r
\r
**/\r
VOID\r
RedfishConfigStopRedfishDiscovery (\r
  VOID\r
  )\r
{\r
  if (gRedfishDiscoverActivated) {\r
    //\r
    // No more EFI Discover Protocol.\r
    //\r
    if (gEfiRedfishDiscoverProtocolEvent != NULL) {\r
      gBS->CloseEvent (gEfiRedfishDiscoverProtocolEvent);\r
    }\r
\r
    //\r
    // Stop Redfish service discovery.\r
    //\r
    gEfiRedfishDiscoverProtocol->AbortAcquireRedfishService (\r
                                   gEfiRedfishDiscoverProtocol,\r
                                   gNetworkInterfaceInstances\r
                                   );\r
    gEfiRedfishDiscoverControllerHandle = NULL;\r
    gEfiRedfishDiscoverProtocol         = NULL;\r
    gRedfishDiscoverActivated           = FALSE;\r
    gRedfishServiceDiscovered           = FALSE;\r
  }\r
}\r
\r
/**\r
  Callback function executed when a Redfish Config Handler Protocol is installed.\r
\r
  @param[in]  Event    Event whose notification function is being invoked.\r
  @param[in]  Context  Pointer to the REDFISH_CONFIG_DRIVER_DATA buffer.\r
\r
**/\r
VOID\r
EFIAPI\r
RedfishConfigHandlerInstalledCallback (\r
  IN EFI_EVENT  Event,\r
  IN VOID       *Context\r
  )\r
{\r
  if (!gRedfishDiscoverActivated) {\r
    //\r
    // No Redfish service is discovered yet.\r
    //\r
    return;\r
  }\r
\r
  RedfishConfigHandlerInitialization ();\r
}\r
\r
/**\r
  Tests to see if this driver supports a given controller. If a child device is provided,\r
  it further tests to see if this driver supports creating a handle for the specified child device.\r
\r
  This function checks to see if the driver specified by This supports the device specified by\r
  ControllerHandle. Drivers will typically use the device path attached to\r
  ControllerHandle and/or the services from the bus I/O abstraction attached to\r
  ControllerHandle to determine if the driver supports ControllerHandle. This function\r
  may be called many times during platform initialization. In order to reduce boot times, the tests\r
  performed by this function must be very small, and take as little time as possible to execute. This\r
  function must not change the state of any hardware devices, and this function must be aware that the\r
  device specified by ControllerHandle may already be managed by the same driver or a\r
  different driver. This function must match its calls to AllocatePages() with FreePages(),\r
  AllocatePool() with FreePool(), and OpenProtocol() with CloseProtocol().\r
  Because ControllerHandle may have been previously started by the same driver, if a protocol is\r
  already in the opened state, then it must not be closed with CloseProtocol(). This is required\r
  to guarantee the state of ControllerHandle is not modified by this function.\r
\r
  @param[in]  This                 A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
  @param[in]  ControllerHandle     The handle of the controller to test. This handle\r
                                   must support a protocol interface that supplies\r
                                   an I/O abstraction to the driver.\r
  @param[in]  RemainingDevicePath  A pointer to the remaining portion of a device path.  This\r
                                   parameter is ignored by device drivers, and is optional for bus\r
                                   drivers. For bus drivers, if this parameter is not NULL, then\r
                                   the bus driver must determine if the bus controller specified\r
                                   by ControllerHandle and the child controller specified\r
                                   by RemainingDevicePath are both supported by this\r
                                   bus driver.\r
\r
  @retval EFI_SUCCESS              The device specified by ControllerHandle and\r
                                   RemainingDevicePath is supported by the driver specified by This.\r
  @retval EFI_UNSUPPORTED          The device specified by ControllerHandle and\r
                                   RemainingDevicePath is not supported by the driver specified by This.\r
**/\r
EFI_STATUS\r
EFIAPI\r
RedfishConfigDriverBindingSupported (\r
  IN EFI_DRIVER_BINDING_PROTOCOL  *This,\r
  IN EFI_HANDLE                   ControllerHandle,\r
  IN EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath OPTIONAL\r
  )\r
{\r
  EFI_REST_EX_PROTOCOL  *RestEx;\r
  EFI_STATUS            Status;\r
  EFI_HANDLE            ChildHandle;\r
\r
  ChildHandle = NULL;\r
\r
  //\r
  // Check if REST EX is ready. This just makes sure\r
  // the network stack is brought up.\r
  //\r
  Status = NetLibCreateServiceChild (\r
             ControllerHandle,\r
             This->ImageHandle,\r
             &gEfiRestExServiceBindingProtocolGuid,\r
             &ChildHandle\r
             );\r
  if (EFI_ERROR (Status)) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  //\r
  // Test if REST EX protocol is ready.\r
  //\r
  Status = gBS->OpenProtocol (\r
                  ChildHandle,\r
                  &gEfiRestExProtocolGuid,\r
                  (VOID **)&RestEx,\r
                  This->DriverBindingHandle,\r
                  ControllerHandle,\r
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
                  );\r
  if (EFI_ERROR (Status)) {\r
    Status = EFI_UNSUPPORTED;\r
  }\r
\r
  NetLibDestroyServiceChild (\r
    ControllerHandle,\r
    This->ImageHandle,\r
    &gEfiRestExServiceBindingProtocolGuid,\r
    ChildHandle\r
    );\r
  return Status;\r
}\r
\r
/**\r
  Starts a device controller or a bus controller.\r
\r
  The Start() function is designed to be invoked from the EFI boot service ConnectController().\r
  As a result, much of the error checking on the parameters to Start() has been moved into this\r
  common boot service. It is legal to call Start() from other locations,\r
  but the following calling restrictions must be followed, or the system behavior will not be deterministic.\r
  1. ControllerHandle must be a valid EFI_HANDLE.\r
  2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned\r
     EFI_DEVICE_PATH_PROTOCOL.\r
  3. Prior to calling Start(), the Supported() function for the driver specified by This must\r
     have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS.\r
\r
  @param[in]  This                 A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
  @param[in]  ControllerHandle     The handle of the controller to start. This handle\r
                                   must support a protocol interface that supplies\r
                                   an I/O abstraction to the driver.\r
  @param[in]  RemainingDevicePath  A pointer to the remaining portion of a device path.  This\r
                                   parameter is ignored by device drivers, and is optional for bus\r
                                   drivers. For a bus driver, if this parameter is NULL, then handles\r
                                   for all the children of Controller are created by this driver.\r
                                   If this parameter is not NULL and the first Device Path Node is\r
                                   not the End of Device Path Node, then only the handle for the\r
                                   child device specified by the first Device Path Node of\r
                                   RemainingDevicePath is created by this driver.\r
                                   If the first Device Path Node of RemainingDevicePath is\r
                                   the End of Device Path Node, no child handle is created by this\r
                                   driver.\r
\r
  @retval EFI_SUCCESS              The driver is started.\r
  @retval EFI_ALREADY_STARTED      The driver was already started.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
RedfishConfigDriverBindingStart (\r
  IN EFI_DRIVER_BINDING_PROTOCOL  *This,\r
  IN EFI_HANDLE                   ControllerHandle,\r
  IN EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath OPTIONAL\r
  )\r
{\r
  VOID  *ConfigHandlerRegistration;\r
\r
  if (gRedfishConfigData.Event != NULL) {\r
    return EFI_ALREADY_STARTED;\r
  }\r
\r
  gRedfishConfigData.Event = EfiCreateProtocolNotifyEvent (\r
                               &gEdkIIRedfishConfigHandlerProtocolGuid,\r
                               TPL_CALLBACK,\r
                               RedfishConfigHandlerInstalledCallback,\r
                               (VOID *)&gRedfishConfigData,\r
                               &ConfigHandlerRegistration\r
                               );\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  Stops a device controller or a bus controller.\r
\r
  The Stop() function is designed to be invoked from the EFI boot service DisconnectController().\r
  As a result, much of the error checking on the parameters to Stop() has been moved\r
  into this common boot service. It is legal to call Stop() from other locations,\r
  but the following calling restrictions must be followed, or the system behavior will not be deterministic.\r
  1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this\r
     same driver's Start() function.\r
  2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid\r
     EFI_HANDLE. In addition, all of these handles must have been created in this driver's\r
     Start() function, and the Start() function must have called OpenProtocol() on\r
     ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.\r
\r
  @param[in]  This              A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
  @param[in]  ControllerHandle  A handle to the device being stopped. The handle must\r
                                support a bus specific I/O protocol for the driver\r
                                to use to stop the device.\r
  @param[in]  NumberOfChildren  The number of child device handles in ChildHandleBuffer.\r
  @param[in]  ChildHandleBuffer An array of child handles to be freed. May be NULL\r
                                if NumberOfChildren is 0.\r
\r
  @retval EFI_SUCCESS           The device was stopped.\r
  @retval EFI_DEVICE_ERROR      The device could not be stopped due to a device error.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
RedfishConfigDriverBindingStop (\r
  IN EFI_DRIVER_BINDING_PROTOCOL  *This,\r
  IN EFI_HANDLE                   ControllerHandle,\r
  IN UINTN                        NumberOfChildren,\r
  IN EFI_HANDLE                   *ChildHandleBuffer OPTIONAL\r
  )\r
{\r
  EFI_STATUS  Status;\r
\r
  if (ControllerHandle == gEfiRedfishDiscoverControllerHandle) {\r
    RedfishConfigStopRedfishDiscovery ();\r
  }\r
\r
  gBS->CloseProtocol (\r
         ControllerHandle,\r
         &gEfiRedfishDiscoverProtocolGuid,\r
         gRedfishConfigData.Image,\r
         gRedfishConfigData.Image\r
         );\r
\r
  Status = RedfishConfigCommonStop ();\r
  if (EFI_ERROR (Status)) {\r
    return EFI_DEVICE_ERROR;\r
  }\r
\r
  if (gRedfishConfigData.Event != NULL) {\r
    gBS->CloseEvent (gRedfishConfigData.Event);\r
    gRedfishConfigData.Event = NULL;\r
  }\r
\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  Callback function when Redfish service is discovered.\r
\r
  @param[in]   Event    Event whose notification function is being invoked.\r
  @param[out]  Context  Pointer to the Context buffer\r
\r
**/\r
VOID\r
EFIAPI\r
RedfishServiceDiscoveredCallback (\r
  IN  EFI_EVENT  Event,\r
  OUT VOID       *Context\r
  )\r
{\r
  EFI_REDFISH_DISCOVERED_TOKEN     *RedfishDiscoveredToken;\r
  EFI_REDFISH_DISCOVERED_INSTANCE  *RedfishInstance;\r
\r
  if (gRedfishServiceDiscovered) {\r
    //\r
    // Only support one Redfish service on platform.\r
    //\r
    return;\r
  }\r
\r
  RedfishDiscoveredToken = (EFI_REDFISH_DISCOVERED_TOKEN *)Context;\r
  RedfishInstance        = RedfishDiscoveredToken->DiscoverList.RedfishInstances;\r
  //\r
  // Only pick up the first found Redfish service.\r
  //\r
  if (RedfishInstance->Status == EFI_SUCCESS) {\r
    gRedfishConfigData.RedfishServiceInfo.RedfishServiceRestExHandle = RedfishInstance->Information.RedfishRestExHandle;\r
    gRedfishConfigData.RedfishServiceInfo.RedfishServiceVersion      = RedfishInstance->Information.RedfishVersion;\r
    gRedfishConfigData.RedfishServiceInfo.RedfishServiceLocation     = RedfishInstance->Information.Location;\r
    gRedfishConfigData.RedfishServiceInfo.RedfishServiceUuid         = RedfishInstance->Information.Uuid;\r
    gRedfishConfigData.RedfishServiceInfo.RedfishServiceOs           = RedfishInstance->Information.Os;\r
    gRedfishConfigData.RedfishServiceInfo.RedfishServiceOsVersion    = RedfishInstance->Information.OsVersion;\r
    gRedfishConfigData.RedfishServiceInfo.RedfishServiceProduct      = RedfishInstance->Information.Product;\r
    gRedfishConfigData.RedfishServiceInfo.RedfishServiceProductVer   = RedfishInstance->Information.ProductVer;\r
    gRedfishConfigData.RedfishServiceInfo.RedfishServiceUseHttps     = RedfishInstance->Information.UseHttps;\r
    gRedfishServiceDiscovered                                        = TRUE;\r
  }\r
\r
  //\r
  // Invoke RedfishConfigHandlerInstalledCallback to execute\r
  // the initialization of Redfish Configure Handler instance.\r
  //\r
  RedfishConfigHandlerInstalledCallback (gRedfishConfigData.Event, &gRedfishConfigData);\r
}\r
\r
/**\r
  Callback function executed when the EFI_REDFISH_DISCOVER_PROTOCOL\r
  protocol interface is installed.\r
\r
  @param[in]   Event    Event whose notification function is being invoked.\r
  @param[out]  Context  Pointer to the Context buffer\r
\r
**/\r
VOID\r
EFIAPI\r
RedfishDiscoverProtocolInstalled (\r
  IN  EFI_EVENT  Event,\r
  OUT VOID       *Context\r
  )\r
{\r
  EFI_STATUS                              Status;\r
  UINTN                                   BufferSize;\r
  EFI_HANDLE                              HandleBuffer;\r
  UINTN                                   NetworkInterfaceIndex;\r
  EFI_REDFISH_DISCOVER_NETWORK_INTERFACE  *ThisNetworkInterface;\r
  EFI_REDFISH_DISCOVERED_TOKEN            *ThisRedfishDiscoveredToken;\r
\r
  DEBUG ((DEBUG_INFO, "%a: New network interface is installed on system by EFI Redfish discover driver.\n", __FUNCTION__));\r
\r
  BufferSize = sizeof (EFI_HANDLE);\r
  Status     = gBS->LocateHandle (\r
                      ByRegisterNotify,\r
                      NULL,\r
                      gEfiRedfishDiscoverRegistration,\r
                      &BufferSize,\r
                      &HandleBuffer\r
                      );\r
  if (EFI_ERROR (Status)) {\r
    DEBUG ((DEBUG_ERROR, "%a: Can't locate handle with EFI_REDFISH_DISCOVER_PROTOCOL installed.\n", __FUNCTION__));\r
  }\r
\r
  gRedfishDiscoverActivated = TRUE;\r
  if (gEfiRedfishDiscoverProtocol == NULL) {\r
    gEfiRedfishDiscoverControllerHandle = HandleBuffer;\r
    //\r
    // First time to open EFI_REDFISH_DISCOVER_PROTOCOL.\r
    //\r
    Status = gBS->OpenProtocol (\r
                    gEfiRedfishDiscoverControllerHandle,\r
                    &gEfiRedfishDiscoverProtocolGuid,\r
                    (VOID **)&gEfiRedfishDiscoverProtocol,\r
                    gRedfishConfigData.Image,\r
                    gRedfishConfigData.Image,\r
                    EFI_OPEN_PROTOCOL_BY_DRIVER\r
                    );\r
    if (EFI_ERROR (Status)) {\r
      gEfiRedfishDiscoverProtocol = NULL;\r
      gRedfishDiscoverActivated   = FALSE;\r
      DEBUG ((DEBUG_ERROR, "%a: Can't locate EFI_REDFISH_DISCOVER_PROTOCOL.\n", __FUNCTION__));\r
      return;\r
    }\r
  }\r
\r
  //\r
  // Check the new found network interface.\r
  //\r
  if (gNetworkInterfaceInstances != NULL) {\r
    FreePool (gNetworkInterfaceInstances);\r
  }\r
\r
  Status = gEfiRedfishDiscoverProtocol->GetNetworkInterfaceList (\r
                                          gEfiRedfishDiscoverProtocol,\r
                                          gRedfishConfigData.Image,\r
                                          &gNumberOfNetworkInterfaces,\r
                                          &gNetworkInterfaceInstances\r
                                          );\r
  if (EFI_ERROR (Status) || (gNumberOfNetworkInterfaces == 0)) {\r
    DEBUG ((DEBUG_ERROR, "%a: No network interfaces found on the handle.\n", __FUNCTION__));\r
    return;\r
  }\r
\r
  gRedfishDiscoveredToken = AllocateZeroPool (gNumberOfNetworkInterfaces * sizeof (EFI_REDFISH_DISCOVERED_TOKEN));\r
  if (gRedfishDiscoveredToken == NULL) {\r
    DEBUG ((DEBUG_ERROR, "%a: Not enough memory for EFI_REDFISH_DISCOVERED_TOKEN.\n", __FUNCTION__));\r
    return;\r
  }\r
\r
  ThisNetworkInterface       = gNetworkInterfaceInstances;\r
  ThisRedfishDiscoveredToken = gRedfishDiscoveredToken;\r
  //\r
  // Loop to discover Redfish service on each network interface.\r
  //\r
  for (NetworkInterfaceIndex = 0; NetworkInterfaceIndex < gNumberOfNetworkInterfaces; NetworkInterfaceIndex++) {\r
    //\r
    // Initial this Redfish Discovered Token\r
    //\r
    Status = gBS->CreateEvent (\r
                    EVT_NOTIFY_SIGNAL,\r
                    TPL_CALLBACK,\r
                    RedfishServiceDiscoveredCallback,\r
                    (VOID *)ThisRedfishDiscoveredToken,\r
                    &ThisRedfishDiscoveredToken->Event\r
                    );\r
    if (EFI_ERROR (Status)) {\r
      DEBUG ((DEBUG_ERROR, "%a: Failed to create event for Redfish discovered token.\n", __FUNCTION__));\r
      goto ErrorReturn;\r
    }\r
\r
    ThisRedfishDiscoveredToken->Signature                         = REDFISH_DISCOVER_TOKEN_SIGNATURE;\r
    ThisRedfishDiscoveredToken->DiscoverList.NumberOfServiceFound = 0;\r
    ThisRedfishDiscoveredToken->DiscoverList.RedfishInstances     = NULL;\r
    //\r
    // Acquire for Redfish service which is reported by\r
    // Redfish Host Interface.\r
    //\r
    Status = gEfiRedfishDiscoverProtocol->AcquireRedfishService (\r
                                            gEfiRedfishDiscoverProtocol,\r
                                            gRedfishConfigData.Image,\r
                                            ThisNetworkInterface,\r
                                            EFI_REDFISH_DISCOVER_HOST_INTERFACE,\r
                                            ThisRedfishDiscoveredToken\r
                                            );\r
    ThisNetworkInterface++;\r
    ThisRedfishDiscoveredToken++;\r
  }\r
\r
  if (EFI_ERROR (Status)) {\r
    DEBUG ((DEBUG_ERROR, "%a: Acquire Redfish service fail.\n", __FUNCTION__));\r
    goto ErrorReturn;\r
  }\r
\r
  return;\r
\r
ErrorReturn:\r
  if (gRedfishDiscoveredToken != NULL) {\r
    FreePool (gRedfishDiscoveredToken);\r
  }\r
}\r
\r
/**\r
  Unloads an image.\r
\r
  @param[in]  ImageHandle       Handle that identifies the image to be unloaded.\r
\r
  @retval EFI_SUCCESS           The image has been unloaded.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
RedfishConfigHandlerDriverUnload (\r
  IN EFI_HANDLE  ImageHandle\r
  )\r
{\r
  EFI_REDFISH_DISCOVERED_TOKEN  *ThisRedfishDiscoveredToken;\r
  UINTN                         NumberOfNetworkInterfacesIndex;\r
\r
  RedfishConfigDriverCommonUnload (ImageHandle);\r
\r
  RedfishConfigStopRedfishDiscovery ();\r
  if (gRedfishDiscoveredToken != NULL) {\r
    ThisRedfishDiscoveredToken = gRedfishDiscoveredToken;\r
    for (NumberOfNetworkInterfacesIndex = 0; NumberOfNetworkInterfacesIndex < gNumberOfNetworkInterfaces; NumberOfNetworkInterfacesIndex++) {\r
      if (ThisRedfishDiscoveredToken->Event != NULL) {\r
        gBS->CloseEvent (ThisRedfishDiscoveredToken->Event);\r
      }\r
\r
      FreePool (ThisRedfishDiscoveredToken);\r
      ThisRedfishDiscoveredToken++;\r
    }\r
\r
    gRedfishDiscoveredToken = NULL;\r
  }\r
\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  This is the declaration of an EFI image entry point. This entry point is\r
  the same for UEFI Applications, UEFI OS Loaders, and UEFI Drivers including\r
  both device drivers and bus drivers.\r
\r
  @param[in]  ImageHandle       The firmware allocated handle for the UEFI image.\r
  @param[in]  SystemTable       A pointer to the EFI System Table.\r
\r
  @retval EFI_SUCCESS           The operation completed successfully.\r
  @retval Others                An unexpected error occurred.\r
**/\r
EFI_STATUS\r
EFIAPI\r
RedfishConfigHandlerDriverEntryPoint (\r
  IN EFI_HANDLE        ImageHandle,\r
  IN EFI_SYSTEM_TABLE  *SystemTable\r
  )\r
{\r
  EFI_STATUS  Status;\r
\r
  ZeroMem ((VOID *)&gRedfishConfigData, sizeof (REDFISH_CONFIG_DRIVER_DATA));\r
  gRedfishConfigData.Image = ImageHandle;\r
  //\r
  // Register event for EFI_REDFISH_DISCOVER_PROTOCOL protocol install\r
  // notification.\r
  //\r
  Status = gBS->CreateEventEx (\r
                  EVT_NOTIFY_SIGNAL,\r
                  TPL_CALLBACK,\r
                  RedfishDiscoverProtocolInstalled,\r
                  NULL,\r
                  &gEfiRedfishDiscoverProtocolGuid,\r
                  &gEfiRedfishDiscoverProtocolEvent\r
                  );\r
  if (EFI_ERROR (Status)) {\r
    DEBUG ((DEBUG_ERROR, "%a: Fail to create event for the installation of EFI_REDFISH_DISCOVER_PROTOCOL.", __FUNCTION__));\r
    return Status;\r
  }\r
\r
  Status = gBS->RegisterProtocolNotify (\r
                  &gEfiRedfishDiscoverProtocolGuid,\r
                  gEfiRedfishDiscoverProtocolEvent,\r
                  &gEfiRedfishDiscoverRegistration\r
                  );\r
  if (EFI_ERROR (Status)) {\r
    DEBUG ((DEBUG_ERROR, "%a: Fail to register event for the installation of EFI_REDFISH_DISCOVER_PROTOCOL.", __FUNCTION__));\r
    return Status;\r
  }\r
\r
  Status = RedfishConfigCommonInit (ImageHandle, SystemTable);\r
  if (EFI_ERROR (Status)) {\r
    gBS->CloseEvent (gEfiRedfishDiscoverProtocolEvent);\r
    gEfiRedfishDiscoverProtocolEvent = NULL;\r
    return Status;\r
  }\r
\r
  //\r
  // Install UEFI Driver Model protocol(s).\r
  //\r
  Status = EfiLibInstallDriverBinding (\r
             ImageHandle,\r
             SystemTable,\r
             &gRedfishConfigDriverBinding,\r
             ImageHandle\r
             );\r
  if (EFI_ERROR (Status)) {\r
    gBS->CloseEvent (gEndOfDxeEvent);\r
    gEndOfDxeEvent = NULL;\r
    gBS->CloseEvent (gExitBootServiceEvent);\r
    gExitBootServiceEvent = NULL;\r
    gBS->CloseEvent (gEfiRedfishDiscoverProtocolEvent);\r
    gEfiRedfishDiscoverProtocolEvent = NULL;\r
    DEBUG ((DEBUG_ERROR, "%a: Fail to install EFI Binding Protocol of EFI Redfish Config driver.", __FUNCTION__));\r
    return Status;\r
  }\r
\r
  return Status;\r
}\r