blob: 7fb16e900c18a584d639e8e728cfd48993ca8be8
| 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 | |
| 19 | struct 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 | |
| 40 | struct 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 |