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/** @file
UART Serial Port library functions.
Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Uefi.h>
extern BOOLEAN mBaseSerialPortLibHobAtRuntime;
/**
Set mSerialIoUartLibAtRuntime flag as TRUE after ExitBootServices.
@param[in] Event The Event that is being processed.
@param[in] Context The Event Context.
**/
STATIC
VOID
EFIAPI
BaseSerialPortLibHobExitBootServicesEvent (
IN EFI_EVENT Event,
IN VOID *Context
)
{
mBaseSerialPortLibHobAtRuntime = TRUE;
}
/**
The constructor function registers a callback for the ExitBootServices event.
@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.
@retval other Either the serial port failed to initialize or the
ExitBootServices event callback registration failed.
**/
EFI_STATUS
EFIAPI
DxeBaseSerialPortLibHobConstructor (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_EVENT SerialPortLibHobExitBootServicesEvent;
return SystemTable->BootServices->CreateEvent (
EVT_SIGNAL_EXIT_BOOT_SERVICES,
TPL_NOTIFY,
BaseSerialPortLibHobExitBootServicesEvent,
NULL,
&SerialPortLibHobExitBootServicesEvent
);
}
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