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/** @file
Status Code Handler Driver which produces datahub handler and hook it
onto the DXE status code router.
Copyright (c) 2010 - 2019, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "DatahubStatusCodeHandlerDxe.h"
static EFI_EVENT mExitBootServicesEvent = NULL;
EFI_RSC_HANDLER_PROTOCOL *mRscHandlerProtocol = NULL;
/**
Unregister status code callback functions only available at boot time from
report status code router when exiting boot services.
@param Event Event whose notification function is being invoked.
@param Context Pointer to the notification function's context, which is
always zero in current implementation.
**/
VOID
EFIAPI
UnregisterBootTimeHandlers (
IN EFI_EVENT Event,
IN VOID *Context
)
{
mRscHandlerProtocol->Unregister (DataHubStatusCodeReportWorker);
}
/**
Entry point of DXE Status Code Driver.
This function is the entry point of this DXE Status Code Driver.
It initializes registers status code handlers, and registers event for EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE.
@param ImageHandle The firmware allocated handle for the EFI image.
@param SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS The entry point is executed successfully.
**/
EFI_STATUS
EFIAPI
DatahubStatusCodeHandlerDxeEntry (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
if (FeaturePcdGet (PcdStatusCodeUseDataHub)) {
Status = gBS->LocateProtocol (
&gEfiRscHandlerProtocolGuid,
NULL,
(VOID **) &mRscHandlerProtocol
);
ASSERT_EFI_ERROR (Status);
//
// Dispatch initialization request to supported devices
//
DataHubStatusCodeInitializeWorker ();
mRscHandlerProtocol->Register (DataHubStatusCodeReportWorker, TPL_HIGH_LEVEL);
Status = gBS->CreateEventEx (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
UnregisterBootTimeHandlers,
NULL,
&gEfiEventExitBootServicesGuid,
&mExitBootServicesEvent
);
ASSERT_EFI_ERROR (Status);
}
return EFI_SUCCESS;
}
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