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/** @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);
}
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