/** @file
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This is the driver that initializes the Intel System Agent.
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Copyright (c) 2017, 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 "SaInitDxe.h"
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#include "SaInit.h"
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#include <Library/MmPciLib.h>
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#include <MemInfoHob.h>
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/**
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SystemAgent Dxe Initialization.
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@param[in] ImageHandle Handle for the image of this driver
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@param[in] SystemTable Pointer to the EFI System Table
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@retval EFI_SUCCESS The function completed successfully
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@retval EFI_OUT_OF_RESOURCES No enough buffer to allocate
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**/
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EFI_STATUS
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EFIAPI
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SaInitEntryPointDxe (
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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_STATUS Status;
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VOID *Registration;
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DEBUG ((DEBUG_INFO, "SaInitDxe Start\n"));
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Status = SaAcpiInit (ImageHandle);
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///
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/// Create PCI Enumeration Completed callback for SA
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///
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EfiCreateProtocolNotifyEvent (
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&gEfiPciEnumerationCompleteProtocolGuid,
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TPL_CALLBACK,
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SaPciEnumCompleteCallback,
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NULL,
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&Registration
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);
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DEBUG ((DEBUG_INFO, "SaInitDxe End\n"));
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return EFI_SUCCESS;
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}
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/**
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This function gets registered as a callback to perform SA initialization before EndOfDxe
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@param[in] Event - A pointer to the Event that triggered the callback.
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@param[in] Context - A pointer to private data registered with the callback function.
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**/
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VOID
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EFIAPI
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SaPciEnumCompleteCallback (
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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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EFI_STATUS Status;
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VOID *ProtocolPointer;
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DEBUG ((DEBUG_INFO, "SaPciEnumCompleteCallback Start\n"));
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///
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/// Check if this is first time called by EfiCreateProtocolNotifyEvent() or not,
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/// if it is, we will skip it until real event is triggered
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///
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Status = gBS->LocateProtocol (&gEfiPciEnumerationCompleteProtocolGuid, NULL, (VOID **) &ProtocolPointer);
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if (EFI_SUCCESS != Status) {
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return;
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}
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gBS->CloseEvent (Event);
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UpdateDmarEndOfDxe ();
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return;
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}
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