mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-27 12:15:19 +01:00
15dada20e6
Signed-off-by: Sergey Isakov <isakov-sl@bk.ru>
733 lines
21 KiB
C
733 lines
21 KiB
C
/** @file
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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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#include "Dhcp4Impl.h"
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#include "Dhcp4Driver.h"
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EFI_DRIVER_BINDING_PROTOCOL gDhcp4DriverBinding = {
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Dhcp4DriverBindingSupported,
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Dhcp4DriverBindingStart,
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Dhcp4DriverBindingStop,
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0xa,
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NULL,
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NULL
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};
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EFI_SERVICE_BINDING_PROTOCOL mDhcp4ServiceBindingTemplate = {
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Dhcp4ServiceBindingCreateChild,
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Dhcp4ServiceBindingDestroyChild
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};
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/**
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This is the declaration of an EFI image entry point. This entry point is
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the same for UEFI Applications, UEFI OS Loaders, and UEFI Drivers including
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both device drivers and bus drivers.
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Entry point of the DHCP driver to install various protocols.
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@param[in] ImageHandle The firmware allocated handle for the UEFI image.
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@param[in] SystemTable A pointer to the EFI System Table.
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@retval EFI_SUCCESS The operation completed successfully.
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@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
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**/
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EFI_STATUS
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EFIAPI
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Dhcp4DriverEntryPoint (
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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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return EfiLibInstallDriverBindingComponentName2 (
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ImageHandle,
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SystemTable,
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&gDhcp4DriverBinding,
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ImageHandle,
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&gDhcp4ComponentName,
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&gDhcp4ComponentName2
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);
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}
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/**
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Test to see if this driver supports ControllerHandle. This service
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is called by the EFI boot service ConnectController(). In
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order to make drivers as small as possible, there are a few calling
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restrictions for this service. ConnectController() must
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follow these calling restrictions. If any other agent wishes to call
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Supported() it must also follow these calling restrictions.
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@param[in] This Protocol instance pointer.
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@param[in] ControllerHandle Handle of device to test
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@param[in] RemainingDevicePath Optional parameter use to pick a specific child
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device to start.
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@retval EFI_SUCCESS This driver supports this device
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@retval EFI_ALREADY_STARTED This driver is already running on this device
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@retval other This driver does not support this device
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**/
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EFI_STATUS
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EFIAPI
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Dhcp4DriverBindingSupported (
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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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EFI_STATUS Status;
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Status = gBS->OpenProtocol (
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ControllerHandle,
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&gEfiUdp4ServiceBindingProtocolGuid,
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NULL,
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This->DriverBindingHandle,
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ControllerHandle,
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EFI_OPEN_PROTOCOL_TEST_PROTOCOL
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);
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return Status;
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}
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/**
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Configure the default UDP child to receive all the DHCP traffics
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on this network interface.
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@param[in] UdpIo The UDP IO to configure
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@param[in] Context The context to the function
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@retval EFI_SUCCESS The UDP IO is successfully configured.
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@retval Others Failed to configure the UDP child.
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**/
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EFI_STATUS
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EFIAPI
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DhcpConfigUdpIo (
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IN UDP_IO *UdpIo,
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IN VOID *Context
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)
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{
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EFI_UDP4_CONFIG_DATA UdpConfigData;
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UdpConfigData.AcceptBroadcast = TRUE;
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UdpConfigData.AcceptPromiscuous = FALSE;
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UdpConfigData.AcceptAnyPort = FALSE;
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UdpConfigData.AllowDuplicatePort = TRUE;
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UdpConfigData.TypeOfService = 0;
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UdpConfigData.TimeToLive = 64;
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UdpConfigData.DoNotFragment = FALSE;
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UdpConfigData.ReceiveTimeout = 0;
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UdpConfigData.TransmitTimeout = 0;
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UdpConfigData.UseDefaultAddress = FALSE;
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UdpConfigData.StationPort = DHCP_CLIENT_PORT;
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UdpConfigData.RemotePort = DHCP_SERVER_PORT;
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ZeroMem (&UdpConfigData.StationAddress, sizeof (EFI_IPv4_ADDRESS));
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ZeroMem (&UdpConfigData.SubnetMask, sizeof (EFI_IPv4_ADDRESS));
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ZeroMem (&UdpConfigData.RemoteAddress, sizeof (EFI_IPv4_ADDRESS));
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return UdpIo->Protocol.Udp4->Configure (UdpIo->Protocol.Udp4, &UdpConfigData);;
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}
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/**
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Destroy the DHCP service. The Dhcp4 service may be partly initialized,
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or partly destroyed. If a resource is destroyed, it is marked as so in
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case the destroy failed and being called again later.
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@param[in] DhcpSb The DHCP service instance to destroy.
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@retval EFI_SUCCESS Always return success.
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**/
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EFI_STATUS
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Dhcp4CloseService (
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IN DHCP_SERVICE *DhcpSb
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)
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{
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DhcpCleanLease (DhcpSb);
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if (DhcpSb->UdpIo != NULL) {
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UdpIoFreeIo (DhcpSb->UdpIo);
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DhcpSb->UdpIo = NULL;
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}
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if (DhcpSb->Timer != NULL) {
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gBS->SetTimer (DhcpSb->Timer, TimerCancel, 0);
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gBS->CloseEvent (DhcpSb->Timer);
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DhcpSb->Timer = NULL;
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}
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return EFI_SUCCESS;
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}
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/**
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Create a new DHCP service binding instance for the controller.
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@param[in] Controller The controller to install DHCP service binding
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protocol onto
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@param[in] ImageHandle The driver's image handle
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@param[out] Service The variable to receive the created DHCP service
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instance.
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@retval EFI_OUT_OF_RESOURCES Failed to allocate resource .
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@retval EFI_SUCCESS The DHCP service instance is created.
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@retval other Other error occurs.
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**/
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EFI_STATUS
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Dhcp4CreateService (
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IN EFI_HANDLE Controller,
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IN EFI_HANDLE ImageHandle,
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OUT DHCP_SERVICE **Service
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)
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{
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DHCP_SERVICE *DhcpSb;
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EFI_STATUS Status;
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*Service = NULL;
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DhcpSb = AllocateZeroPool (sizeof (DHCP_SERVICE));
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if (DhcpSb == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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DhcpSb->Signature = DHCP_SERVICE_SIGNATURE;
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DhcpSb->ServiceState = DHCP_UNCONFIGED;
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DhcpSb->Controller = Controller;
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DhcpSb->Image = ImageHandle;
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InitializeListHead (&DhcpSb->Children);
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DhcpSb->DhcpState = Dhcp4Stopped;
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DhcpSb->Xid = NET_RANDOM (NetRandomInitSeed ());
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CopyMem (
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&DhcpSb->ServiceBinding,
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&mDhcp4ServiceBindingTemplate,
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sizeof (EFI_SERVICE_BINDING_PROTOCOL)
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);
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//
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// Create various resources, UdpIo, Timer, and get Mac address
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//
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Status = gBS->CreateEvent (
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EVT_NOTIFY_SIGNAL | EVT_TIMER,
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TPL_CALLBACK,
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DhcpOnTimerTick,
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DhcpSb,
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&DhcpSb->Timer
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);
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if (EFI_ERROR (Status)) {
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goto ON_ERROR;
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}
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DhcpSb->UdpIo = UdpIoCreateIo (
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Controller,
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ImageHandle,
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DhcpConfigUdpIo,
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UDP_IO_UDP4_VERSION,
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NULL
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);
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if (DhcpSb->UdpIo == NULL) {
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Status = EFI_OUT_OF_RESOURCES;
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goto ON_ERROR;
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}
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DhcpSb->HwLen = (UINT8) DhcpSb->UdpIo->SnpMode.HwAddressSize;
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DhcpSb->HwType = DhcpSb->UdpIo->SnpMode.IfType;
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CopyMem (&DhcpSb->Mac, &DhcpSb->UdpIo->SnpMode.CurrentAddress, sizeof (DhcpSb->Mac));
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*Service = DhcpSb;
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return EFI_SUCCESS;
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ON_ERROR:
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Dhcp4CloseService (DhcpSb);
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FreePool (DhcpSb);
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return Status;
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}
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/**
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Start this driver on ControllerHandle. This service is called by the
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EFI boot service ConnectController(). In order to make
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drivers as small as possible, there are a few calling restrictions for
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this service. ConnectController() must follow these
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calling restrictions. If any other agent wishes to call Start() it
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must also follow these calling restrictions.
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@param[in] This Protocol instance pointer.
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@param[in] ControllerHandle Handle of device to bind driver to
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@param[in] RemainingDevicePath Optional parameter use to pick a specific child
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device to start.
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@retval EFI_SUCCESS This driver is added to ControllerHandle
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@retval EFI_ALREADY_STARTED This driver is already running on ControllerHandle
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@retval other This driver does not support this device
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**/
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EFI_STATUS
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EFIAPI
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Dhcp4DriverBindingStart (
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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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DHCP_SERVICE *DhcpSb;
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EFI_STATUS Status;
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//
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// First: test for the DHCP4 Protocol
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//
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Status = gBS->OpenProtocol (
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ControllerHandle,
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&gEfiDhcp4ServiceBindingProtocolGuid,
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NULL,
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This->DriverBindingHandle,
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ControllerHandle,
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EFI_OPEN_PROTOCOL_TEST_PROTOCOL
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);
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if (Status == EFI_SUCCESS) {
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return EFI_ALREADY_STARTED;
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}
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Status = Dhcp4CreateService (ControllerHandle, This->DriverBindingHandle, &DhcpSb);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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ASSERT (DhcpSb != NULL);
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//
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// Start the receiving
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//
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Status = UdpIoRecvDatagram (DhcpSb->UdpIo, DhcpInput, DhcpSb, 0);
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if (EFI_ERROR (Status)) {
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goto ON_ERROR;
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}
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Status = gBS->SetTimer (DhcpSb->Timer, TimerPeriodic, TICKS_PER_SECOND);
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if (EFI_ERROR (Status)) {
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goto ON_ERROR;
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}
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//
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// Install the Dhcp4ServiceBinding Protocol onto ControlerHandle
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//
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Status = gBS->InstallMultipleProtocolInterfaces (
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&ControllerHandle,
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&gEfiDhcp4ServiceBindingProtocolGuid,
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&DhcpSb->ServiceBinding,
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NULL
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);
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if (EFI_ERROR (Status)) {
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goto ON_ERROR;
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}
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return Status;
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ON_ERROR:
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Dhcp4CloseService (DhcpSb);
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FreePool (DhcpSb);
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return Status;
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}
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/**
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Callback function which provided by user to remove one node in NetDestroyLinkList process.
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@param[in] Entry The entry to be removed.
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@param[in] Context Pointer to the callback context corresponds to the Context in NetDestroyLinkList.
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@retval EFI_SUCCESS The entry has been removed successfully.
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@retval Others Fail to remove the entry.
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**/
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EFI_STATUS
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EFIAPI
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Dhcp4DestroyChildEntry (
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IN LIST_ENTRY *Entry,
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IN VOID *Context
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)
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{
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DHCP_PROTOCOL *Instance;
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EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding;
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if (Entry == NULL || Context == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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Instance = NET_LIST_USER_STRUCT_S (Entry, DHCP_PROTOCOL, Link, DHCP_PROTOCOL_SIGNATURE);
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ServiceBinding = (EFI_SERVICE_BINDING_PROTOCOL *) Context;
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return ServiceBinding->DestroyChild (ServiceBinding, Instance->Handle);
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}
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/**
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Stop this driver on ControllerHandle. This service is called by the
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EFI boot service DisconnectController(). In order to
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make drivers as small as possible, there are a few calling
|
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restrictions for this service. DisconnectController()
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must follow these calling restrictions. If any other agent wishes
|
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to call Stop() it must also follow these calling restrictions.
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@param[in] This Protocol instance pointer.
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@param[in] ControllerHandle Handle of device to stop driver on
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@param[in] NumberOfChildren Number of Handles in ChildHandleBuffer. If number of
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children is zero stop the entire bus driver.
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@param[in] ChildHandleBuffer List of Child Handles to Stop.
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@retval EFI_SUCCESS This driver is removed ControllerHandle
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@retval other This driver was not removed from this device
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**/
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EFI_STATUS
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EFIAPI
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Dhcp4DriverBindingStop (
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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
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)
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{
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EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding;
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DHCP_SERVICE *DhcpSb;
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EFI_HANDLE NicHandle;
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EFI_STATUS Status;
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LIST_ENTRY *List;
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UINTN ListLength;
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//
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// DHCP driver opens UDP child, So, the ControllerHandle is the
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// UDP child handle. locate the Nic handle first.
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//
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NicHandle = NetLibGetNicHandle (ControllerHandle, &gEfiUdp4ProtocolGuid);
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if (NicHandle == NULL) {
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return EFI_SUCCESS;
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}
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Status = gBS->OpenProtocol (
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NicHandle,
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&gEfiDhcp4ServiceBindingProtocolGuid,
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(VOID **) &ServiceBinding,
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This->DriverBindingHandle,
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NicHandle,
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EFI_OPEN_PROTOCOL_GET_PROTOCOL
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);
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if (EFI_ERROR (Status)) {
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return EFI_DEVICE_ERROR;
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}
|
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DhcpSb = DHCP_SERVICE_FROM_THIS (ServiceBinding);
|
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if (!IsListEmpty (&DhcpSb->Children)) {
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//
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// Destroy all the children instances before destory the service.
|
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//
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List = &DhcpSb->Children;
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Status = NetDestroyLinkList (
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List,
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Dhcp4DestroyChildEntry,
|
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ServiceBinding,
|
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&ListLength
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);
|
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if (EFI_ERROR (Status) || ListLength != 0) {
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Status = EFI_DEVICE_ERROR;
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}
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}
|
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|
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if (NumberOfChildren == 0 && !IsListEmpty (&DhcpSb->Children)) {
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Status = EFI_DEVICE_ERROR;
|
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}
|
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|
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if (NumberOfChildren == 0 && IsListEmpty (&DhcpSb->Children)) {
|
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//
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// Destroy the service itself if no child instance left.
|
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//
|
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DhcpSb->ServiceState = DHCP_DESTROY;
|
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|
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gBS->UninstallProtocolInterface (
|
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NicHandle,
|
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&gEfiDhcp4ServiceBindingProtocolGuid,
|
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ServiceBinding
|
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);
|
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|
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Dhcp4CloseService (DhcpSb);
|
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|
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if (gDhcpControllerNameTable != NULL) {
|
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FreeUnicodeStringTable (gDhcpControllerNameTable);
|
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gDhcpControllerNameTable = NULL;
|
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}
|
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FreePool (DhcpSb);
|
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|
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Status = EFI_SUCCESS;
|
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}
|
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|
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return Status;
|
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}
|
|
|
|
|
|
/**
|
|
Initialize a new DHCP instance.
|
|
|
|
@param DhcpSb The dhcp service instance
|
|
@param Instance The dhcp instance to initialize
|
|
|
|
**/
|
|
VOID
|
|
DhcpInitProtocol (
|
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IN DHCP_SERVICE *DhcpSb,
|
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IN OUT DHCP_PROTOCOL *Instance
|
|
)
|
|
{
|
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Instance->Signature = DHCP_PROTOCOL_SIGNATURE;
|
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CopyMem (&Instance->Dhcp4Protocol, &mDhcp4ProtocolTemplate, sizeof (Instance->Dhcp4Protocol));
|
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InitializeListHead (&Instance->Link);
|
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Instance->Handle = NULL;
|
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Instance->Service = DhcpSb;
|
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Instance->InDestroy = FALSE;
|
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Instance->CompletionEvent = NULL;
|
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Instance->RenewRebindEvent = NULL;
|
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Instance->Token = NULL;
|
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Instance->UdpIo = NULL;
|
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Instance->ElaspedTime = 0;
|
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NetbufQueInit (&Instance->ResponseQueue);
|
|
}
|
|
|
|
|
|
/**
|
|
Creates a child handle and installs a protocol.
|
|
|
|
The CreateChild() function installs a protocol on ChildHandle.
|
|
If ChildHandle is a pointer to NULL, then a new handle is created and returned in ChildHandle.
|
|
If ChildHandle is not a pointer to NULL, then the protocol installs on the existing ChildHandle.
|
|
|
|
@param This Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance.
|
|
@param ChildHandle Pointer to the handle of the child to create. If it is NULL,
|
|
then a new handle is created. If it is a pointer to an existing UEFI handle,
|
|
then the protocol is added to the existing UEFI handle.
|
|
|
|
@retval EFI_SUCCES The protocol was added to ChildHandle.
|
|
@retval EFI_INVALID_PARAMETER ChildHandle is NULL.
|
|
@retval EFI_OUT_OF_RESOURCES There are not enough resources available to create
|
|
the child
|
|
@retval other The child handle was not created
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
Dhcp4ServiceBindingCreateChild (
|
|
IN EFI_SERVICE_BINDING_PROTOCOL *This,
|
|
IN EFI_HANDLE *ChildHandle
|
|
)
|
|
{
|
|
DHCP_SERVICE *DhcpSb;
|
|
DHCP_PROTOCOL *Instance;
|
|
EFI_STATUS Status;
|
|
EFI_TPL OldTpl;
|
|
VOID *Udp4;
|
|
|
|
if ((This == NULL) || (ChildHandle == NULL)) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
Instance = AllocatePool (sizeof (*Instance));
|
|
|
|
if (Instance == NULL) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
|
|
DhcpSb = DHCP_SERVICE_FROM_THIS (This);
|
|
DhcpInitProtocol (DhcpSb, Instance);
|
|
|
|
//
|
|
// Install DHCP4 onto ChildHandle
|
|
//
|
|
Status = gBS->InstallMultipleProtocolInterfaces (
|
|
ChildHandle,
|
|
&gEfiDhcp4ProtocolGuid,
|
|
&Instance->Dhcp4Protocol,
|
|
NULL
|
|
);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
FreePool (Instance);
|
|
return Status;
|
|
}
|
|
|
|
Instance->Handle = *ChildHandle;
|
|
|
|
//
|
|
// Open the Udp4 protocol BY_CHILD.
|
|
//
|
|
Status = gBS->OpenProtocol (
|
|
DhcpSb->UdpIo->UdpHandle,
|
|
&gEfiUdp4ProtocolGuid,
|
|
(VOID **) &Udp4,
|
|
gDhcp4DriverBinding.DriverBindingHandle,
|
|
Instance->Handle,
|
|
EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
gBS->UninstallMultipleProtocolInterfaces (
|
|
Instance->Handle,
|
|
&gEfiDhcp4ProtocolGuid,
|
|
&Instance->Dhcp4Protocol,
|
|
NULL
|
|
);
|
|
|
|
FreePool (Instance);
|
|
return Status;
|
|
}
|
|
|
|
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
|
|
|
|
InsertTailList (&DhcpSb->Children, &Instance->Link);
|
|
DhcpSb->NumChildren++;
|
|
|
|
gBS->RestoreTPL (OldTpl);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
|
|
/**
|
|
Destroys a child handle with a protocol installed on it.
|
|
|
|
The DestroyChild() function does the opposite of CreateChild(). It removes a protocol
|
|
that was installed by CreateChild() from ChildHandle. If the removed protocol is the
|
|
last protocol on ChildHandle, then ChildHandle is destroyed.
|
|
|
|
@param This Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance.
|
|
@param ChildHandle Handle of the child to destroy
|
|
|
|
@retval EFI_SUCCES The protocol was removed from ChildHandle.
|
|
@retval EFI_UNSUPPORTED ChildHandle does not support the protocol that is being removed.
|
|
@retval EFI_INVALID_PARAMETER Child handle is NULL.
|
|
@retval EFI_ACCESS_DENIED The protocol could not be removed from the ChildHandle
|
|
because its services are being used.
|
|
@retval other The child handle was not destroyed
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
Dhcp4ServiceBindingDestroyChild (
|
|
IN EFI_SERVICE_BINDING_PROTOCOL *This,
|
|
IN EFI_HANDLE ChildHandle
|
|
)
|
|
{
|
|
DHCP_SERVICE *DhcpSb;
|
|
DHCP_PROTOCOL *Instance;
|
|
EFI_DHCP4_PROTOCOL *Dhcp;
|
|
EFI_TPL OldTpl;
|
|
EFI_STATUS Status;
|
|
|
|
if ((This == NULL) || (ChildHandle == NULL)) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
//
|
|
// Retrieve the private context data structures
|
|
//
|
|
Status = gBS->OpenProtocol (
|
|
ChildHandle,
|
|
&gEfiDhcp4ProtocolGuid,
|
|
(VOID **) &Dhcp,
|
|
gDhcp4DriverBinding.DriverBindingHandle,
|
|
ChildHandle,
|
|
EFI_OPEN_PROTOCOL_GET_PROTOCOL
|
|
);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
Instance = DHCP_INSTANCE_FROM_THIS (Dhcp);
|
|
DhcpSb = DHCP_SERVICE_FROM_THIS (This);
|
|
|
|
if (Instance->Service != DhcpSb) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
//
|
|
// A child can be destroyed more than once. For example,
|
|
// Dhcp4DriverBindingStop will destroy all of its children.
|
|
// when caller driver is being stopped, it will destroy the
|
|
// dhcp child it opens.
|
|
//
|
|
if (Instance->InDestroy) {
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
|
|
Instance->InDestroy = TRUE;
|
|
|
|
//
|
|
// Close the Udp4 protocol.
|
|
//
|
|
gBS->CloseProtocol (
|
|
DhcpSb->UdpIo->UdpHandle,
|
|
&gEfiUdp4ProtocolGuid,
|
|
gDhcp4DriverBinding.DriverBindingHandle,
|
|
ChildHandle
|
|
);
|
|
|
|
//
|
|
// Uninstall the DHCP4 protocol first to enable a top down destruction.
|
|
//
|
|
gBS->RestoreTPL (OldTpl);
|
|
Status = gBS->UninstallProtocolInterface (
|
|
ChildHandle,
|
|
&gEfiDhcp4ProtocolGuid,
|
|
Dhcp
|
|
);
|
|
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
|
|
if (EFI_ERROR (Status)) {
|
|
Instance->InDestroy = FALSE;
|
|
|
|
gBS->RestoreTPL (OldTpl);
|
|
return Status;
|
|
}
|
|
|
|
if (DhcpSb->ActiveChild == Instance) {
|
|
DhcpYieldControl (DhcpSb);
|
|
}
|
|
|
|
RemoveEntryList (&Instance->Link);
|
|
DhcpSb->NumChildren--;
|
|
|
|
if (Instance->UdpIo != NULL) {
|
|
UdpIoCleanIo (Instance->UdpIo);
|
|
gBS->CloseProtocol (
|
|
Instance->UdpIo->UdpHandle,
|
|
&gEfiUdp4ProtocolGuid,
|
|
Instance->Service->Image,
|
|
Instance->Handle
|
|
);
|
|
UdpIoFreeIo (Instance->UdpIo);
|
|
Instance->UdpIo = NULL;
|
|
Instance->Token = NULL;
|
|
}
|
|
|
|
gBS->RestoreTPL (OldTpl);
|
|
|
|
FreePool (Instance);
|
|
return EFI_SUCCESS;
|
|
}
|