1/* 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
50