60274ccab8
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10446 6f19259b-4bc3-4df7-8a09-765794883524
104 lines
2.7 KiB
C
104 lines
2.7 KiB
C
/** @file
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Template library implementation to support ResetSystem Runtime call.
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Fill in the templates with what ever makes you system reset.
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Copyright (c) 2008 - 2009, Apple Inc. 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 <Library/BaseLib.h>
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#include <Library/IoLib.h>
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#include <Library/EfiResetSystemLib.h>
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/**
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Resets the entire platform.
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@param ResetType The type of reset to perform.
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@param ResetStatus The status code for the reset.
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@param DataSize The size, in bytes, of WatchdogData.
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@param ResetData For a ResetType of EfiResetCold, EfiResetWarm, or
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EfiResetShutdown the data buffer starts with a Null-terminated
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Unicode string, optionally followed by additional binary data.
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**/
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EFI_STATUS
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EFIAPI
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LibResetSystem (
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IN EFI_RESET_TYPE ResetType,
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IN EFI_STATUS ResetStatus,
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IN UINTN DataSize,
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IN CHAR16 *ResetData OPTIONAL
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)
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{
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UINTN Address;
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UINT8 Data;
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switch (ResetType) {
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case EfiResetCold:
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// system power cycle
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// Example using IoLib functions to do IO.
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Address = 0x12345678;
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Data = MmioRead8 (Address);
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MmioWrite8 (Address, Data | 0x01);
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// Note this is a bad example asa MmioOr8 (Address, 0x01) does the same thing
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break;
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case EfiResetWarm:
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// not a full power cycle, maybe memory stays around.
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// if not support do the same thing as EfiResetCold.
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break;
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case EfiResetShutdown:
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// turn off the system.
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// if not support do the same thing as EfiResetCold.
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break;
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default:
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return EFI_INVALID_PARAMETER;
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}
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//
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// If we reset, we would not have returned...
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//
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return EFI_DEVICE_ERROR;
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}
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/**
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Initialize any infrastructure required for LibResetSystem () to function.
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@param ImageHandle The firmware allocated handle for the EFI image.
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@param SystemTable A pointer to the EFI System Table.
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@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
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**/
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EFI_STATUS
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EFIAPI
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LibInitializeResetSystem (
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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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return EFI_SUCCESS;
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}
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