1*4882a593Smuzhiyun /* SPDX-License-Identifier: BSD-3-Clause */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * This is from the Android Project, 4*4882a593Smuzhiyun * Repository: https://android.googlesource.com/platform/system/libufdt 5*4882a593Smuzhiyun * File: utils/src/dt_table.h 6*4882a593Smuzhiyun * Commit: 2626d8b9e4d8e8c6cc67ceb1dc4e05a47779785c 7*4882a593Smuzhiyun * Copyright (C) 2017 The Android Open Source Project 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #ifndef DT_TABLE_H 11*4882a593Smuzhiyun #define DT_TABLE_H 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #include <linux/types.h> 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun #define DT_TABLE_MAGIC 0xd7b7ab1e 16*4882a593Smuzhiyun #define DT_TABLE_DEFAULT_PAGE_SIZE 2048 17*4882a593Smuzhiyun #define DT_TABLE_DEFAULT_VERSION 0 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun struct dt_table_header { 20*4882a593Smuzhiyun u32 magic; /* DT_TABLE_MAGIC */ 21*4882a593Smuzhiyun u32 total_size; /* includes dt_table_header + all dt_table_entry 22*4882a593Smuzhiyun * and all dtb/dtbo 23*4882a593Smuzhiyun */ 24*4882a593Smuzhiyun u32 header_size; /* sizeof(dt_table_header) */ 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun u32 dt_entry_size; /* sizeof(dt_table_entry) */ 27*4882a593Smuzhiyun u32 dt_entry_count; /* number of dt_table_entry */ 28*4882a593Smuzhiyun u32 dt_entries_offset; /* offset to the first dt_table_entry 29*4882a593Smuzhiyun * from head of dt_table_header. 30*4882a593Smuzhiyun * The value will be equal to header_size if 31*4882a593Smuzhiyun * no padding is appended 32*4882a593Smuzhiyun */ 33*4882a593Smuzhiyun u32 page_size; /* flash page size we assume */ 34*4882a593Smuzhiyun u32 version; /* DTBO image version, the current version is 0. 35*4882a593Smuzhiyun * The version will be incremented when the 36*4882a593Smuzhiyun * dt_table_header struct is updated. 37*4882a593Smuzhiyun */ 38*4882a593Smuzhiyun }; 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun struct dt_table_entry { 41*4882a593Smuzhiyun u32 dt_size; 42*4882a593Smuzhiyun u32 dt_offset; /* offset from head of dt_table_header */ 43*4882a593Smuzhiyun 44*4882a593Smuzhiyun u32 id; /* optional, must be zero if unused */ 45*4882a593Smuzhiyun u32 rev; /* optional, must be zero if unused */ 46*4882a593Smuzhiyun u32 custom[4]; /* optional, must be zero if unused */ 47*4882a593Smuzhiyun }; 48*4882a593Smuzhiyun 49*4882a593Smuzhiyun #endif 50