2 Pei Core Reset System Support
4 Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
5 This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
19 Core version of the Reset System
22 @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.
24 @retval EFI_NOT_AVAILABLE_YET PPI not available yet.
25 @retval EFI_DEVICE_ERROR Did not reset system.
26 Otherwise, resets the system.
32 IN CONST EFI_PEI_SERVICES
**PeiServices
36 EFI_PEI_RESET_PPI
*ResetPpi
;
39 // Attempt to use newer ResetSystem2(). If this returns, then ResetSystem2()
42 PeiResetSystem2 (EfiResetCold
, EFI_SUCCESS
, 0, NULL
);
45 // Look for PEI Reset System PPI
47 Status
= PeiServicesLocatePpi (
53 if (!EFI_ERROR (Status
)) {
54 return ResetPpi
->ResetSystem (PeiServices
);
57 // Report Status Code that Reset PPI is not available
60 EFI_ERROR_CODE
| EFI_ERROR_MINOR
,
61 (EFI_SOFTWARE_PEI_CORE
| EFI_SW_PS_EC_RESET_NOT_AVAILABLE
)
65 // No reset PPIs are available yet.
67 return EFI_NOT_AVAILABLE_YET
;
71 Resets the entire platform.
73 @param[in] ResetType The type of reset to perform.
74 @param[in] ResetStatus The status code for the reset.
75 @param[in] DataSize The size, in bytes, of ResetData.
76 @param[in] ResetData For a ResetType of EfiResetCold, EfiResetWarm, or EfiResetShutdown
77 the data buffer starts with a Null-terminated string, optionally
78 followed by additional binary data. The string is a description
79 that the caller may use to further indicate the reason for the
80 system reset. ResetData is only valid if ResetStatus is something
81 other than EFI_SUCCESS unless the ResetType is EfiResetPlatformSpecific
82 where a minimum amount of ResetData is always required.
88 IN EFI_RESET_TYPE ResetType
,
89 IN EFI_STATUS ResetStatus
,
91 IN VOID
*ResetData OPTIONAL
95 EFI_PEI_RESET2_PPI
*Reset2Ppi
;
98 // Look for PEI Reset System 2 PPI
100 Status
= PeiServicesLocatePpi (
101 &gEfiPeiReset2PpiGuid
,
107 if (!EFI_ERROR (Status
)) {
108 Reset2Ppi
->ResetSystem (ResetType
, ResetStatus
, DataSize
, ResetData
);
113 // Report Status Code that Reset2 PPI is not available.
116 EFI_ERROR_CODE
| EFI_ERROR_MINOR
,
117 (EFI_SOFTWARE_PEI_CORE
| EFI_SW_PS_EC_RESET_NOT_AVAILABLE
)