| /* 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 |
| */ |
| |
| #pragma once |
| |
| /* |
| * 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 |
| |
