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Diffstat (limited to 'common/include/rollback_index.h')
| -rw-r--r-- | common/include/rollback_index.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/common/include/rollback_index.h b/common/include/rollback_index.h new file mode 100644 index 00000000..d4e47ac8 --- /dev/null +++ b/common/include/rollback_index.h @@ -0,0 +1,36 @@ +/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + * + * Functions for querying, manipulating and locking rollback indices + * stored in the TPM NVRAM. + */ + +#ifndef VBOOT_REFERENCE_ROLLBACK_INDEX_H_ +#define VBOOT_REFERENCE_ROLLBACK_INDEX_H_ + +#include <stdint.h> + +extern uint16_t g_firmware_key_version; +extern uint16_t g_firmware_version; +extern uint16_t g_kernel_key_version; +extern uint16_t g_kernel_version; + +/* Rollback version types. */ +#define FIRMWARE_KEY_VERSION 0 +#define FIRMWARE_VERSION 1 +#define KERNEL_KEY_VERSION 2 +#define KERNEL_VERSION 3 + +/* TPM NVRAM location indices. */ +#define FIRMWARE_KEY_VERSION_NV_INDEX 0x1001 +#define FIRMWARE_VERSION_NV_INDEX 0x1002 +#define KERNEL_KEY_VERSION_NV_INDEX 0x1003 +#define KERNEL_VERSION_NV_INDEX 0x1004 + +void SetupTPM(void); +uint16_t GetStoredVersion(int type); +int WriteStoredVersion(int type, uint16_t version); +void LockStoredVersion(int type); + +#endif /* VBOOT_REFERENCE_ROLLBACK_INDEX_H_ */ |