blob: 89065524d37ab71477a3c26493dcba9a8307c833 [file] [log] [blame]
Simon Glassc8ca6b62020-11-04 09:57:16 -07001/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright 2020 Google LLC
4 */
5
6#ifndef __ASM_ACPI_VBNV_LAYOUT_H__
7#define __ASM_ACPI_VBNV_LAYOUT_H__
8
9#define VBOOT_VBNV_BLOCK_SIZE 16 /* Size of NV storage block in bytes */
10
11/* Constants for NV storage, for use with ACPI */
12#define HEADER_OFFSET 0
13#define HEADER_MASK 0xc0
14#define HEADER_SIGNATURE 0x40
15#define HEADER_FIRMWARE_SETTINGS_RESET 0x20
16#define HEADER_KERNEL_SETTINGS_RESET 0x10
17
18#define BOOT_OFFSET 1
19#define BOOT_DEBUG_RESET_MODE 0x80
20#define BOOT_DISABLE_DEV_REQUEST 0x40
21#define BOOT_DISPLAY_REQUEST 0x20
22#define BOOT_TRY_B_COUNT_MASK 0x0f
23
24#define RECOVERY_OFFSET 2
25#define LOCALIZATION_OFFSET 3
26
27#define DEV_FLAGS_OFFSET 4
28#define DEV_BOOT_USB_MASK 0x01
29#define DEV_BOOT_SIGNED_ONLY_MASK 0x02
30#define DEV_ENABLE_UDC 0x40
31
32#define MISC_FLAGS_OFFSET 8
33#define MISC_FLAGS_BATTERY_CUTOFF_MASK 0x08
34
35#define KERNEL_FIELD_OFFSET 11
36#define CRC_OFFSET 15
37
38#endif /* __ASM_ACPI_VBNV_LAYOUT_H__ */