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/** @file
Pei Core Reset System Support
Copyright (c) 2006 - 2017, Intel Corporation. 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 "PeiMain.h"
/**
Core version of the Reset System
@param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.
@retval EFI_NOT_AVAILABLE_YET PPI not available yet.
@retval EFI_DEVICE_ERROR Did not reset system.
Otherwise, resets the system.
**/
EFI_STATUS
EFIAPI
PeiResetSystem (
IN CONST EFI_PEI_SERVICES **PeiServices
)
{
EFI_STATUS Status;
EFI_PEI_RESET_PPI *ResetPpi;
//
// Attempt to use newer ResetSystem2(). If this returns, then ResetSystem2()
// is not available.
//
PeiResetSystem2 (EfiResetCold, EFI_SUCCESS, 0, NULL);
//
// Look for PEI Reset System PPI
//
Status = PeiServicesLocatePpi (
&gEfiPeiResetPpiGuid,
0,
NULL,
(VOID **)&ResetPpi
);
if (!EFI_ERROR (Status)) {
return ResetPpi->ResetSystem (PeiServices);
}
//
// Report Status Code that Reset PPI is not available.
//
REPORT_STATUS_CODE (
EFI_ERROR_CODE | EFI_ERROR_MINOR,
(EFI_SOFTWARE_PEI_CORE | EFI_SW_PS_EC_RESET_NOT_AVAILABLE)
);
//
// No reset PPIs are available yet.
//
return EFI_NOT_AVAILABLE_YET;
}
/**
Resets the entire platform.
@param[in] ResetType The type of reset to perform.
@param[in] ResetStatus The status code for the reset.
@param[in] DataSize The size, in bytes, of ResetData.
@param[in] ResetData For a ResetType of EfiResetCold, EfiResetWarm, or EfiResetShutdown
the data buffer starts with a Null-terminated string, optionally
followed by additional binary data. The string is a description
that the caller may use to further indicate the reason for the
system reset. ResetData is only valid if ResetStatus is something
other than EFI_SUCCESS unless the ResetType is EfiResetPlatformSpecific
where a minimum amount of ResetData is always required.
**/
VOID
EFIAPI
PeiResetSystem2 (
IN EFI_RESET_TYPE ResetType,
IN EFI_STATUS ResetStatus,
IN UINTN DataSize,
IN VOID *ResetData OPTIONAL
)
{
EFI_STATUS Status;
EFI_PEI_RESET2_PPI *Reset2Ppi;
//
// Look for PEI Reset System 2 PPI
//
Status = PeiServicesLocatePpi (
&gEfiPeiReset2PpiGuid,
0,
NULL,
(VOID **)&Reset2Ppi
);
if (!EFI_ERROR (Status)) {
Reset2Ppi->ResetSystem (ResetType, ResetStatus, DataSize, ResetData);
return;
}
//
// Report Status Code that Reset2 PPI is not available.
//
REPORT_STATUS_CODE (
EFI_ERROR_CODE | EFI_ERROR_MINOR,
(EFI_SOFTWARE_PEI_CORE | EFI_SW_PS_EC_RESET_NOT_AVAILABLE)
);
}
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