1 /*++ 2 3 Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR> 4 5 This program and the accompanying materials are licensed and made available under 7 the terms and conditions of the BSD License that accompanies this distribution. 9 The full text of the license may be found at 11 http://opensource.org/licenses/bsd-license.php. 13 15 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 17 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 19 21 23 24 Module Name: 25 26 TcoReset.h 27 28 Abstract: 29 30 Protocol to communicate with ICH TCO. 31 32 GUID Info: 33 {A6A79162-E325-4c30-BCC3-59373064EFB3} 34 0xa6a79162, 0xe325, 0x4c30, 0xbc, 0xc3, 0x59, 0x37, 0x30, 0x64, 0xef, 0xb3); 35 36 37 --*/ 38 39 #ifndef _TCO_RESET_H_ 40 #define _TCO_RESET_H_ 41 42 43 #define EFI_TCO_RESET_PROTOCOL_GUID \ 44 {0xa6a79162, 0xe325, 0x4c30, 0xbc, 0xc3, 0x59, 0x37, 0x30, 0x64, 0xef, 0xb3} 45 46 typedef struct _EFI_TCO_RESET_PROTOCOL EFI_TCO_RESET_PROTOCOL; 47 48 /** 49 Enables the TCO timer to reset the system in case of a system hang. This is 50 used when writing the clock registers. 51 52 @param[in] RcrbGcsSaveValue This is the value of the RCRB GCS register before it is 53 changed by this procedure. This will be used to restore 54 the settings of this register in PpiDisableTcoReset. 55 **/ 56 typedef 57 EFI_STATUS 58 (EFIAPI *EFI_TCO_RESET_PROTOCOL_ENABLE_TCO_RESET) ( 59 IN UINT32 *RcrbGcsSaveValue 60 ); 61 62 /** 63 Disables the TCO timer. This is used after writing the clock registers. 64 65 @param[in] RcrbGcsRestoreValue Value saved in PpiEnableTcoReset so that it can 66 restored. 67 **/ 68 typedef 69 EFI_STATUS 70 (EFIAPI *EFI_TCO_RESET_PROTOCOL_DISABLE_TCO_RESET) ( 71 OUT UINT32 RcrbGcsRestoreValue 72 ); 73 74 typedef struct _EFI_TCO_RESET_PROTOCOL { 75 EFI_TCO_RESET_PROTOCOL_ENABLE_TCO_RESET EnableTcoReset; 76 EFI_TCO_RESET_PROTOCOL_DISABLE_TCO_RESET DisableTcoReset; 77 } EFI_TCO_RESET_PROTOCOL; 78 79 extern EFI_GUID gEfiTcoResetProtocolGuid; 80 81 #endif 82
