| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef DT_TABLE_H |
| #define DT_TABLE_H |
| |
| #include <stdint.h> |
| |
| /* |
| * For the image layout, refer README.md for the detail |
| */ |
| |
| #define DT_TABLE_MAGIC 0xd7b7ab1e |
| #define DT_TABLE_DEFAULT_PAGE_SIZE 2048 |
| |
| struct dt_table_header { |
| uint32_t magic; /* DT_TABLE_MAGIC */ |
| uint32_t total_size; /* includes dt_table_header + all dt_table_entry |
| and all dtb/dtbo */ |
| uint32_t header_size; /* sizeof(dt_table_header) */ |
| |
| uint32_t dt_entry_size; /* sizeof(dt_table_entry) */ |
| uint32_t dt_entry_count; /* number of dt_table_entry */ |
| uint32_t dt_entries_offset; /* offset to the first dt_table_entry |
| from head of dt_table_header. |
| The value will be equal to header_size if |
| no padding is appended */ |
| |
| uint32_t page_size; /* flash page size we assume */ |
| uint32_t reserved[1]; /* must be zero */ |
| }; |
| |
| struct dt_table_entry { |
| uint32_t dt_size; |
| uint32_t dt_offset; /* offset from head of dt_table_header */ |
| |
| uint32_t id; /* optional, must be zero if unused */ |
| uint32_t rev; /* optional, must be zero if unused */ |
| uint32_t custom[4]; /* optional, must be zero if unused */ |
| }; |
| |
| void dt_table_header_init(struct dt_table_header *header); |
| |
| #endif |