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/** @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>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#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;
}
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