1 /* Copyright (c) 2012 The Chromium OS Authors. All rights reserved. 2 * Use of this source code is governed by a BSD-style license that can be 3 * found in the LICENSE file. 4 * 5 * Functions for querying, manipulating and locking rollback indices 6 * stored in the TPM NVRAM. 7 */ 8 9 #include "sysincludes.h" 10 #include "utility.h" 11 12 #include "rollback_index.h" 13 14 #include "tss_constants.h" 15 16 17 uint32_t SetVirtualDevMode(int val) { 18 return TPM_SUCCESS; 19 } 20 21 22 uint32_t TPMClearAndReenable(void) { 23 return TPM_SUCCESS; 24 } 25 26 27 uint32_t SetupTPM(int developer_mode, int disable_dev_request, 28 int clear_tpm_owner_request, RollbackSpaceFirmware* rsf) { 29 return TPM_SUCCESS; 30 } 31 32 33 uint32_t RollbackS3Resume(void) { 34 return TPM_SUCCESS; 35 } 36 37 38 uint32_t RollbackFirmwareSetup(int is_hw_dev, 39 int disable_dev_request, 40 int clear_tpm_owner_request, 41 int *is_virt_dev, uint32_t *version) { 42 *version = 0; 43 return TPM_SUCCESS; 44 } 45 46 47 uint32_t RollbackFirmwareWrite(uint32_t version) { 48 return TPM_SUCCESS; 49 } 50 51 52 uint32_t RollbackFirmwareLock(void) { 53 return TPM_SUCCESS; 54 } 55 56 57 uint32_t RollbackKernelRead(uint32_t* version) { 58 *version = 0; 59 return TPM_SUCCESS; 60 } 61 62 63 uint32_t RollbackKernelWrite(uint32_t version) { 64 return TPM_SUCCESS; 65 } 66 67 68 uint32_t RollbackKernelLock(int recovery_mode) { 69 return TPM_SUCCESS; 70 } 71 72 static uint8_t rollback_backup[BACKUP_NV_SIZE]; 73 74 uint32_t RollbackBackupRead(uint8_t *raw) 75 { 76 Memcpy(raw, rollback_backup, BACKUP_NV_SIZE); 77 return TPM_SUCCESS; 78 } 79 80 uint32_t RollbackBackupWrite(uint8_t *raw) 81 { 82 Memcpy(rollback_backup, raw, BACKUP_NV_SIZE); 83 return TPM_SUCCESS; 84 } 85
