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/** @file
Pei Core Reset System Support
Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#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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