/** @file | |
Permanently disable the library instance in DXE_RUNTIME_DRIVER modules when | |
exiting boot services. | |
Copyright (C) Red Hat | |
Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR> | |
Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR> | |
SPDX-License-Identifier: BSD-2-Clause-Patent | |
**/ | |
#include <Uefi/UefiSpec.h> | |
#include "Ram.h" | |
STATIC EFI_EVENT mExitBootServicesEvent; | |
/** | |
Notification function that is triggered when the boot service | |
ExitBootServices() is called. | |
@param[in] Event Event whose notification function is being invoked. Here, | |
unused. | |
@param[in] Context The pointer to the notification function's context, which | |
is implementation-dependent. Here, unused. | |
**/ | |
STATIC | |
VOID | |
EFIAPI | |
ExitBootServicesNotify ( | |
IN EFI_EVENT Event, | |
IN VOID *Context | |
) | |
{ | |
mDebugLibFdtPL011UartAddress = 0; | |
mDebugLibFdtPL011UartPermanentStatus = RETURN_ABORTED; | |
} | |
/** | |
Library instance constructor, registering ExitBootServicesNotify(). | |
@param[in] ImageHandle The firmware-allocated handle for the EFI image. | |
@param[in] SystemTable A pointer to the EFI System Table. | |
@retval EFI_SUCCESS The operation completed successfully. | |
@return Error codes propagated from CreateEvent(); the | |
registration of ExitBootServicesNotify() failed. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
DxeRuntimeDebugLibFdtPL011UartConstructor ( | |
IN EFI_HANDLE ImageHandle, | |
IN EFI_SYSTEM_TABLE *SystemTable | |
) | |
{ | |
return SystemTable->BootServices->CreateEvent ( | |
EVT_SIGNAL_EXIT_BOOT_SERVICES, | |
TPL_CALLBACK, | |
ExitBootServicesNotify, | |
NULL /* NotifyContext */, | |
&mExitBootServicesEvent | |
); | |
} | |
/** | |
Library instance destructor, deregistering ExitBootServicesNotify(). | |
@param[in] ImageHandle The firmware-allocated handle for the EFI image. | |
@param[in] SystemTable A pointer to the EFI System Table. | |
@retval EFI_SUCCESS Library instance tear-down complete. | |
@return Error codes propagated from CloseEvent(); the | |
deregistration of ExitBootServicesNotify() failed. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
DxeRuntimeDebugLibFdtPL011UartDestructor ( | |
IN EFI_HANDLE ImageHandle, | |
IN EFI_SYSTEM_TABLE *SystemTable | |
) | |
{ | |
return SystemTable->BootServices->CloseEvent (mExitBootServicesEvent); | |
} |