mirror of https://github.com/acidanthera/audk.git
57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
/** @file
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UART Serial Port library functions.
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Copyright (c) 2023, 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 <Uefi.h>
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extern BOOLEAN mBaseSerialPortLibHobAtRuntime;
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/**
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Set mSerialIoUartLibAtRuntime flag as TRUE after ExitBootServices.
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@param[in] Event The Event that is being processed.
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@param[in] Context The Event Context.
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**/
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STATIC
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VOID
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EFIAPI
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BaseSerialPortLibHobExitBootServicesEvent (
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IN EFI_EVENT Event,
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IN VOID *Context
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)
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{
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mBaseSerialPortLibHobAtRuntime = TRUE;
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}
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/**
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The constructor function registers a callback for the ExitBootServices event.
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@param[in] ImageHandle The firmware allocated handle for the EFI 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 other Either the serial port failed to initialize or the
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ExitBootServices event callback registration failed.
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**/
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EFI_STATUS
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EFIAPI
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DxeBaseSerialPortLibHobConstructor (
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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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EFI_EVENT SerialPortLibHobExitBootServicesEvent;
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return SystemTable->BootServices->CreateEvent (
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EVT_SIGNAL_EXIT_BOOT_SERVICES,
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TPL_NOTIFY,
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BaseSerialPortLibHobExitBootServicesEvent,
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NULL,
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&SerialPortLibHobExitBootServicesEvent
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);
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}
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