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
