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- /* Copyright 2015 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.
- *
- * Non-volatile storage bitfields
- */
- #ifndef VBOOT_REFERENCE_VBOOT_2NVSTORAGE_FIELDS_H_
- #define VBOOT_REFERENCE_VBOOT_2NVSTORAGE_FIELDS_H_
- /*
- * Constants for NV storage. We use this rather than structs and bitfields so
- * the data format is consistent across platforms and compilers. Total NV
- * storage size is VB2_NVDATA_SIZE = 16 bytes.
- *
- * These constants must match the equivalent constants in
- * lib/vboot_nvstorage.c. (We currently don't share a common header file
- * because we're tring to keep the two libs independent, and we hope to
- * deprecate that one.)
- */
- enum vb2_nv_offset {
- VB2_NV_OFFS_HEADER = 0,
- VB2_NV_OFFS_BOOT = 1,
- VB2_NV_OFFS_RECOVERY = 2,
- VB2_NV_OFFS_LOCALIZATION = 3,
- VB2_NV_OFFS_DEV = 4,
- VB2_NV_OFFS_TPM = 5,
- VB2_NV_OFFS_RECOVERY_SUBCODE = 6,
- VB2_NV_OFFS_BOOT2 = 7,
- VB2_NV_OFFS_MISC = 8,
- /* Offsets 9-10 are currently unused */
- VB2_NV_OFFS_KERNEL = 11, /* 11-14; field is 32 bits */
- /* CRC must be last field */
- VB2_NV_OFFS_CRC = 15
- };
- /* Fields in VB2_NV_OFFS_HEADER (unused = 0x07) */
- #define VB2_NV_HEADER_WIPEOUT 0x08
- #define VB2_NV_HEADER_KERNEL_SETTINGS_RESET 0x10
- #define VB2_NV_HEADER_FW_SETTINGS_RESET 0x20
- #define VB2_NV_HEADER_SIGNATURE 0x40
- #define VB2_NV_HEADER_MASK 0xc0
- /* Fields in VB2_NV_OFFS_BOOT */
- #define VB2_NV_BOOT_TRY_COUNT_MASK 0x0f
- #define VB2_NV_BOOT_BACKUP_NVRAM 0x10
- #define VB2_NV_BOOT_OPROM_NEEDED 0x20
- #define VB2_NV_BOOT_DISABLE_DEV 0x40
- #define VB2_NV_BOOT_DEBUG_RESET 0x80
- /* Fields in VB2_NV_OFFS_BOOT2 (unused = 0x80) */
- #define VB2_NV_BOOT2_RESULT_MASK 0x03
- #define VB2_NV_BOOT2_TRIED 0x04
- #define VB2_NV_BOOT2_TRY_NEXT 0x08
- #define VB2_NV_BOOT2_PREV_RESULT_MASK 0x30
- #define VB2_NV_BOOT2_PREV_RESULT_SHIFT 4 /* Number of bits to shift result */
- #define VB2_NV_BOOT2_PREV_TRIED 0x40
- /* Fields in VB2_NV_OFFS_DEV (unused = 0xc0) */
- #define VB2_NV_DEV_FLAG_USB 0x01
- #define VB2_NV_DEV_FLAG_SIGNED_ONLY 0x02
- #define VB2_NV_DEV_FLAG_LEGACY 0x04
- #define VB2_NV_DEV_FLAG_FASTBOOT_FULL_CAP 0x08
- #define VB2_NV_DEV_FLAG_DEFAULT_BOOT 0x30
- #define VB2_NV_DEV_DEFAULT_BOOT_SHIFT 4 /* Number of bits to shift */
- /* Fields in VB2_NV_OFFS_TPM (unused = 0xf8) */
- #define VB2_NV_TPM_CLEAR_OWNER_REQUEST 0x01
- #define VB2_NV_TPM_CLEAR_OWNER_DONE 0x02
- #define VB2_NV_TPM_REBOOTED 0x04
- /* Fields in VB2_NV_OFFS_MISC (unused = 0xf0) */
- #define VB2_NV_MISC_UNLOCK_FASTBOOT 0x01
- #define VB2_NV_MISC_BOOT_ON_AC_DETECT 0x02
- #define VB2_NV_MISC_TRY_RO_SYNC 0x04
- #define VB2_NV_MISC_BATTERY_CUTOFF 0x08
- #endif /* VBOOT_REFERENCE_VBOOT_2NVSTORAGE_FIELDS_H_ */
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