blob: 7fb16e900c18a584d639e8e728cfd48993ca8be8 [file] [log] [blame]
Alex Deymo643cefa2018-05-28 17:19:35 +02001/* SPDX-License-Identifier: BSD-3-Clause */
2/*
3 * This is from the Android Project,
4 * Repository: https://android.googlesource.com/platform/system/libufdt
5 * File: utils/src/dt_table.h
6 * Commit: 2626d8b9e4d8e8c6cc67ceb1dc4e05a47779785c
7 * Copyright (C) 2017 The Android Open Source Project
8 */
9
10#ifndef DT_TABLE_H
11#define DT_TABLE_H
12
13#include <linux/types.h>
14
15#define DT_TABLE_MAGIC 0xd7b7ab1e
16#define DT_TABLE_DEFAULT_PAGE_SIZE 2048
17#define DT_TABLE_DEFAULT_VERSION 0
18
19struct dt_table_header {
20 u32 magic; /* DT_TABLE_MAGIC */
21 u32 total_size; /* includes dt_table_header + all dt_table_entry
22 * and all dtb/dtbo
23 */
24 u32 header_size; /* sizeof(dt_table_header) */
25
26 u32 dt_entry_size; /* sizeof(dt_table_entry) */
27 u32 dt_entry_count; /* number of dt_table_entry */
28 u32 dt_entries_offset; /* offset to the first dt_table_entry
29 * from head of dt_table_header.
30 * The value will be equal to header_size if
31 * no padding is appended
32 */
33 u32 page_size; /* flash page size we assume */
34 u32 version; /* DTBO image version, the current version is 0.
35 * The version will be incremented when the
36 * dt_table_header struct is updated.
37 */
38};
39
40struct dt_table_entry {
41 u32 dt_size;
42 u32 dt_offset; /* offset from head of dt_table_header */
43
44 u32 id; /* optional, must be zero if unused */
45 u32 rev; /* optional, must be zero if unused */
46 u32 custom[4]; /* optional, must be zero if unused */
47};
48
49#endif