1*7ec0ac2bSAlex Deymo /* SPDX-License-Identifier: BSD-3-Clause */ 2*7ec0ac2bSAlex Deymo /* 3*7ec0ac2bSAlex Deymo * This is from the Android Project, 4*7ec0ac2bSAlex Deymo * Repository: https://android.googlesource.com/platform/system/libufdt 5*7ec0ac2bSAlex Deymo * File: utils/src/dt_table.h 6*7ec0ac2bSAlex Deymo * Commit: 2626d8b9e4d8e8c6cc67ceb1dc4e05a47779785c 7*7ec0ac2bSAlex Deymo * Copyright (C) 2017 The Android Open Source Project 8*7ec0ac2bSAlex Deymo */ 9*7ec0ac2bSAlex Deymo 10*7ec0ac2bSAlex Deymo #ifndef DT_TABLE_H 11*7ec0ac2bSAlex Deymo #define DT_TABLE_H 12*7ec0ac2bSAlex Deymo 13*7ec0ac2bSAlex Deymo #include <linux/types.h> 14*7ec0ac2bSAlex Deymo 15*7ec0ac2bSAlex Deymo #define DT_TABLE_MAGIC 0xd7b7ab1e 16*7ec0ac2bSAlex Deymo #define DT_TABLE_DEFAULT_PAGE_SIZE 2048 17*7ec0ac2bSAlex Deymo #define DT_TABLE_DEFAULT_VERSION 0 18*7ec0ac2bSAlex Deymo 19*7ec0ac2bSAlex Deymo struct dt_table_header { 20*7ec0ac2bSAlex Deymo u32 magic; /* DT_TABLE_MAGIC */ 21*7ec0ac2bSAlex Deymo u32 total_size; /* includes dt_table_header + all dt_table_entry 22*7ec0ac2bSAlex Deymo * and all dtb/dtbo 23*7ec0ac2bSAlex Deymo */ 24*7ec0ac2bSAlex Deymo u32 header_size; /* sizeof(dt_table_header) */ 25*7ec0ac2bSAlex Deymo 26*7ec0ac2bSAlex Deymo u32 dt_entry_size; /* sizeof(dt_table_entry) */ 27*7ec0ac2bSAlex Deymo u32 dt_entry_count; /* number of dt_table_entry */ 28*7ec0ac2bSAlex Deymo u32 dt_entries_offset; /* offset to the first dt_table_entry 29*7ec0ac2bSAlex Deymo * from head of dt_table_header. 30*7ec0ac2bSAlex Deymo * The value will be equal to header_size if 31*7ec0ac2bSAlex Deymo * no padding is appended 32*7ec0ac2bSAlex Deymo */ 33*7ec0ac2bSAlex Deymo u32 page_size; /* flash page size we assume */ 34*7ec0ac2bSAlex Deymo u32 version; /* DTBO image version, the current version is 0. 35*7ec0ac2bSAlex Deymo * The version will be incremented when the 36*7ec0ac2bSAlex Deymo * dt_table_header struct is updated. 37*7ec0ac2bSAlex Deymo */ 38*7ec0ac2bSAlex Deymo }; 39*7ec0ac2bSAlex Deymo 40*7ec0ac2bSAlex Deymo struct dt_table_entry { 41*7ec0ac2bSAlex Deymo u32 dt_size; 42*7ec0ac2bSAlex Deymo u32 dt_offset; /* offset from head of dt_table_header */ 43*7ec0ac2bSAlex Deymo 44*7ec0ac2bSAlex Deymo u32 id; /* optional, must be zero if unused */ 45*7ec0ac2bSAlex Deymo u32 rev; /* optional, must be zero if unused */ 46*7ec0ac2bSAlex Deymo u32 custom[4]; /* optional, must be zero if unused */ 47*7ec0ac2bSAlex Deymo }; 48*7ec0ac2bSAlex Deymo 49*7ec0ac2bSAlex Deymo #endif 50