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1 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved. | 1 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved. |
2 * Use of this source code is governed by a BSD-style license that can be | 2 * Use of this source code is governed by a BSD-style license that can be |
3 * found in the LICENSE file. | 3 * found in the LICENSE file. |
4 * | 4 * |
5 * Functions for querying, manipulating and locking rollback indices | 5 * Functions for querying, manipulating and locking rollback indices |
6 * stored in the TPM NVRAM. | 6 * stored in the TPM NVRAM. |
7 */ | 7 */ |
8 | 8 |
9 #ifndef VBOOT_REFERENCE_ROLLBACK_INDEX_H_ | 9 #ifndef VBOOT_REFERENCE_ROLLBACK_INDEX_H_ |
10 #define VBOOT_REFERENCE_ROLLBACK_INDEX_H_ | 10 #define VBOOT_REFERENCE_ROLLBACK_INDEX_H_ |
11 | 11 |
12 #include <stdint.h> | 12 #include "sysincludes.h" |
13 | 13 |
| 14 /* TODO: global variables won't work in the boot stub, since it runs |
| 15 directly out of ROM. */ |
14 extern uint16_t g_firmware_key_version; | 16 extern uint16_t g_firmware_key_version; |
15 extern uint16_t g_firmware_version; | 17 extern uint16_t g_firmware_version; |
16 extern uint16_t g_kernel_key_version; | 18 extern uint16_t g_kernel_key_version; |
17 extern uint16_t g_kernel_version; | 19 extern uint16_t g_kernel_version; |
18 | 20 |
19 /* Rollback version types. */ | 21 /* Rollback version types. */ |
20 #define FIRMWARE_VERSIONS 0 | 22 #define FIRMWARE_VERSIONS 0 |
21 #define KERNEL_VERSIONS 1 | 23 #define KERNEL_VERSIONS 1 |
22 | 24 |
23 /* Initialization mode */ | 25 /* Initialization mode */ |
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55 * returning. In all other cases, the caller is responsible for locking the | 57 * returning. In all other cases, the caller is responsible for locking the |
56 * firmware versions once it decides it doesn't need to update them. | 58 * firmware versions once it decides it doesn't need to update them. |
57 */ | 59 */ |
58 uint32_t SetupTPM(int mode, int developer_flag); | 60 uint32_t SetupTPM(int mode, int developer_flag); |
59 uint32_t GetStoredVersions(int type, uint16_t* key_version, uint16_t* version); | 61 uint32_t GetStoredVersions(int type, uint16_t* key_version, uint16_t* version); |
60 uint32_t WriteStoredVersions(int type, uint16_t key_version, uint16_t version); | 62 uint32_t WriteStoredVersions(int type, uint16_t key_version, uint16_t version); |
61 uint32_t LockFirmwareVersions(void); | 63 uint32_t LockFirmwareVersions(void); |
62 uint32_t LockKernelVersionsByLockingPP(void); | 64 uint32_t LockKernelVersionsByLockingPP(void); |
63 | 65 |
64 #endif /* VBOOT_REFERENCE_ROLLBACK_INDEX_H_ */ | 66 #endif /* VBOOT_REFERENCE_ROLLBACK_INDEX_H_ */ |
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