/** @file | |
Template library implementation to support ResetSystem Runtime call. | |
Fill in the templates with what ever makes you system reset. | |
Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> | |
This program and the accompanying materials | |
are licensed and made available under the terms and conditions of the BSD License | |
which accompanies this distribution. The full text of the license may be found at | |
http://opensource.org/licenses/bsd-license.php | |
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
**/ | |
#include <PiDxe.h> | |
#include <Library/BaseLib.h> | |
#include <Library/IoLib.h> | |
#include <Library/EfiResetSystemLib.h> | |
/** | |
Resets the entire platform. | |
@param ResetType The type of reset to perform. | |
@param ResetStatus The status code for the reset. | |
@param DataSize The size, in bytes, of WatchdogData. | |
@param ResetData For a ResetType of EfiResetCold, EfiResetWarm, or | |
EfiResetShutdown the data buffer starts with a Null-terminated | |
Unicode string, optionally followed by additional binary data. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
LibResetSystem ( | |
IN EFI_RESET_TYPE ResetType, | |
IN EFI_STATUS ResetStatus, | |
IN UINTN DataSize, | |
IN CHAR16 *ResetData OPTIONAL | |
) | |
{ | |
UINTN Address; | |
UINT8 Data; | |
switch (ResetType) { | |
case EfiResetCold: | |
// system power cycle | |
// Example using IoLib functions to do IO. | |
Address = 0x12345678; | |
Data = MmioRead8 (Address); | |
MmioWrite8 (Address, Data | 0x01); | |
// Note this is a bad example asa MmioOr8 (Address, 0x01) does the same thing | |
break; | |
case EfiResetWarm: | |
// not a full power cycle, maybe memory stays around. | |
// if not support do the same thing as EfiResetCold. | |
break; | |
case EfiResetShutdown: | |
// turn off the system. | |
// if not support do the same thing as EfiResetCold. | |
break; | |
default: | |
return EFI_INVALID_PARAMETER; | |
} | |
// | |
// If we reset, we would not have returned... | |
// | |
return EFI_DEVICE_ERROR; | |
} | |
/** | |
Initialize any infrastructure required for LibResetSystem () to function. | |
@param ImageHandle The firmware allocated handle for the EFI image. | |
@param SystemTable A pointer to the EFI System Table. | |
@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
LibInitializeResetSystem ( | |
IN EFI_HANDLE ImageHandle, | |
IN EFI_SYSTEM_TABLE *SystemTable | |
) | |
{ | |
return EFI_SUCCESS; | |
} | |