mirror of https://github.com/acidanthera/audk.git
149 lines
4.4 KiB
C
149 lines
4.4 KiB
C
/** @file
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This driver will register two callbacks to call fsp's notifies.
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Copyright (c) 2014 - 2015, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <PiDxe.h>
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#include <Protocol/PciEnumerationComplete.h>
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#include <Library/UefiDriverEntryPoint.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/DebugLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/UefiLib.h>
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#include <Library/FspApiLib.h>
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FSP_INFO_HEADER *mFspHeader = NULL;
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/**
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PciEnumerationComplete Protocol notification event handler.
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@param[in] Event Event whose notification function is being invoked.
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@param[in] Context Pointer to the notification function's context.
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**/
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VOID
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EFIAPI
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OnPciEnumerationComplete (
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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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NOTIFY_PHASE_PARAMS NotifyPhaseParams;
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EFI_STATUS Status;
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VOID *Interface;
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//
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// Try to locate it because gEfiPciEnumerationCompleteProtocolGuid will trigger it once when registration.
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// Just return if it is not found.
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//
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Status = gBS->LocateProtocol (
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&gEfiPciEnumerationCompleteProtocolGuid,
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NULL,
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&Interface
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);
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if (EFI_ERROR (Status)) {
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return ;
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}
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NotifyPhaseParams.Phase = EnumInitPhaseAfterPciEnumeration;
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Status = CallFspNotifyPhase (mFspHeader, &NotifyPhaseParams);
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if (Status != EFI_SUCCESS) {
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DEBUG((DEBUG_ERROR, "FSP NotifyPhase AfterPciEnumeration failed, status: 0x%x\n", Status));
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} else {
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DEBUG((DEBUG_INFO, "FSP NotifyPhase AfterPciEnumeration Success.\n"));
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}
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}
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/**
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Notification function of EVT_GROUP_READY_TO_BOOT event group.
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This is a notification function registered on EVT_GROUP_READY_TO_BOOT event group.
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When the Boot Manager is about to load and execute a boot option, it reclaims variable
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storage if free size is below the threshold.
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@param[in] Event Event whose notification function is being invoked.
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@param[in] Context Pointer to the notification function's context.
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**/
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VOID
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EFIAPI
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OnReadyToBoot (
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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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NOTIFY_PHASE_PARAMS NotifyPhaseParams;
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EFI_STATUS Status;
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gBS->CloseEvent (Event);
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NotifyPhaseParams.Phase = EnumInitPhaseReadyToBoot;
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Status = CallFspNotifyPhase (mFspHeader, &NotifyPhaseParams);
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if (Status != EFI_SUCCESS) {
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DEBUG((DEBUG_ERROR, "FSP NotifyPhase ReadyToBoot failed, status: 0x%x\n", Status));
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} else {
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DEBUG((DEBUG_INFO, "FSP NotifyPhase ReadyToBoot Success.\n"));
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}
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}
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/**
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Main entry for the FSP DXE module.
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This routine registers two callbacks to call fsp's notifies.
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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 entry point is executed successfully.
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@retval other Some error occurs when executing this entry point.
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**/
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EFI_STATUS
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EFIAPI
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FspDxeEntryPoint (
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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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EFI_EVENT ReadyToBootEvent;
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VOID *Registration;
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EFI_EVENT ProtocolNotifyEvent;
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mFspHeader = FspFindFspHeader (PcdGet32 (PcdFlashFvFspBase));
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DEBUG ((DEBUG_INFO, "FspHeader - 0x%x\n", mFspHeader));
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if (mFspHeader == NULL) {
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return EFI_DEVICE_ERROR;
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}
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ProtocolNotifyEvent = EfiCreateProtocolNotifyEvent (
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&gEfiPciEnumerationCompleteProtocolGuid,
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TPL_CALLBACK,
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OnPciEnumerationComplete,
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NULL,
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&Registration
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);
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ASSERT (ProtocolNotifyEvent != NULL);
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Status = EfiCreateEventReadyToBootEx (
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TPL_CALLBACK,
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OnReadyToBoot,
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NULL,
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&ReadyToBootEvent
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);
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ASSERT_EFI_ERROR (Status);
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return EFI_SUCCESS;
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}
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