94 lines
3.4 KiB
C
94 lines
3.4 KiB
C
/** @file
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DXE Chipset Services Library.
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This file contains only one function that is LoadDefaultSetupMenu().
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The function LoadDefaultSetupMenu() use chipset services to delete setup
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relative variables and then let system to load variable default.
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;***************************************************************************
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;* Copyright (c) 2016, Insyde Software Corp. All Rights Reserved.
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;*
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;* You may not reproduce, distribute, publish, display, perform, modify, adapt,
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;* transmit, broadcast, present, recite, release, license or otherwise exploit
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;* any part of this publication in any form, by any means, without the prior
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;* written permission of Insyde Software Corporation.
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;*
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;******************************************************************************
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*/
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#include <Uefi.h>
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#include <Library/UefiRuntimeServicesTableLib.h>
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#include <SetupVariable.h>
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#pragma pack(1)
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typedef struct {
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CHAR16 VariableName[100];
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EFI_GUID VariableGuid;
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} RC_SETUP_VARIABLE_INFO;
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#pragma pack()
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/**
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Delete setup relative variables and then let system to load variable default.
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@param VOID
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@retval EFI_SUCCESS This function always return successfully.
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*/
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EFI_STATUS
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LoadDefaultSetupMenu (
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VOID
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)
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{
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EFI_STATUS Status;
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UINTN Index;
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UINTN MaxIndex;
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UINTN VariableSize;
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RC_SETUP_VARIABLE_INFO RcSetupVariableInfo[] = {
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{SA_SETUP_VARIABLE_NAME, SA_SETUP_GUID},
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{ME_SETUP_VARIABLE_NAME, ME_SETUP_GUID},
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{CPU_SETUP_VARIABLE_NAME, CPU_SETUP_GUID},
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{PCH_SETUP_VARIABLE_NAME, PCH_SETUP_GUID},
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{ME_SETUP_STORAGE_VARIABLE_NAME, ME_SETUP_GUID},
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{PLATFORM_SETUP_VARIABLE_NAME, SETUP_GUID},
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{L"SiSetup", SI_SETUP_GUID},
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{L"DebugConfigData", DEBUG_CONFIG_GUID}};
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MaxIndex = sizeof (RcSetupVariableInfo) / sizeof (RC_SETUP_VARIABLE_INFO);
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for (Index = 0; Index < MaxIndex; Index++) {
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//
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// Is variable existence?
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//
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VariableSize = 0;
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Status = gRT->GetVariable (
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RcSetupVariableInfo[Index].VariableName,
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&RcSetupVariableInfo[Index].VariableGuid,
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NULL,
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&VariableSize,
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NULL
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);
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if (Status != EFI_BUFFER_TOO_SMALL) {
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//
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// No variable found, so this variable is default now.
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// continue to handle next RC setup variable.
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//
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continue;
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}
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//
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// Delete "RC Setup" variable. It will load default in GetSystemConfigurationVar() of SetupUtility.c
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//
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VariableSize = 0;
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Status = gRT->SetVariable (
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RcSetupVariableInfo[Index].VariableName,
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&RcSetupVariableInfo[Index].VariableGuid,
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EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
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VariableSize,
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NULL
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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}
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return EFI_SUCCESS;
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}
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