| /* |
| * Copyright (C) 2016 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. |
| */ |
| |
| #include <stdlib.h> |
| #include <time.h> |
| |
| #include "libfdt.h" |
| #include "libufdt_sysdeps.h" |
| |
| #include "util.h" |
| |
| int apply_overlay_files(const char *out_filename, const char *base_filename, |
| const char *overlay_filename) { |
| int ret = 1; |
| char *base_buf = NULL; |
| char *overlay_buf = NULL; |
| char *merged_buf = NULL; |
| |
| size_t base_len; |
| base_buf = load_file(base_filename, &base_len); |
| if (!base_buf) { |
| fprintf(stderr, "Can not load base file: %s\n", base_filename); |
| goto end; |
| } |
| |
| size_t overlay_len; |
| overlay_buf = load_file(overlay_filename, &overlay_len); |
| if (!overlay_buf) { |
| fprintf(stderr, "Can not load overlay file: %s\n", overlay_filename); |
| goto end; |
| } |
| |
| size_t merged_buf_len = base_len + overlay_len; |
| merged_buf = dto_malloc(merged_buf_len); |
| fdt_open_into(base_buf, merged_buf, merged_buf_len); |
| |
| clock_t start = clock(); |
| fdt_overlay_apply(merged_buf, overlay_buf); |
| clock_t end = clock(); |
| |
| if (write_fdt_to_file(out_filename, merged_buf) != 0) { |
| fprintf(stderr, "Write file error: %s\n", out_filename); |
| goto end; |
| } |
| |
| // Outputs the used time. |
| double cpu_time_used = ((double)(end - start)) / CLOCKS_PER_SEC; |
| printf(" fdt_apply_overlay: took %.9f secs\n", cpu_time_used); |
| ret = 0; |
| |
| end: |
| if (merged_buf) dto_free(merged_buf); |
| if (overlay_buf) dto_free(overlay_buf); |
| if (base_buf) dto_free(base_buf); |
| |
| return ret; |
| } |
| |
| int main(int argc, char **argv) { |
| if (argc < 4) { |
| fprintf(stderr, "Usage: %s <base_file> <overlay_file> <out_file>\n", argv[0]); |
| return 1; |
| } |
| |
| const char *base_file = argv[1]; |
| const char *overlay_file = argv[2]; |
| const char *out_file = argv[3]; |
| int ret = apply_overlay_files(out_file, base_file, overlay_file); |
| |
| return ret; |
| } |