1/* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include <stdlib.h> 18#include <time.h> 19 20#include "libfdt.h" 21#include "libufdt_sysdeps.h" 22 23#include "util.h" 24 25 26int apply_ovleray_files(const char *out_filename, 27 const char *base_filename, 28 const char *overlay_filename) { 29 int ret = 1; 30 char *base_buf = NULL; 31 char *overlay_buf = NULL; 32 char *merged_buf = NULL; 33 34 size_t base_len; 35 base_buf = load_file(base_filename, &base_len); 36 if (!base_buf) { 37 fprintf(stderr, "Can not load base file: %s\n", base_filename); 38 goto end; 39 } 40 41 size_t overlay_len; 42 overlay_buf = load_file(overlay_filename, &overlay_len); 43 if (!overlay_buf) { 44 fprintf(stderr, "Can not load overlay file: %s\n", overlay_filename); 45 goto end; 46 } 47 48 size_t merged_buf_len = base_len + overlay_len; 49 merged_buf = dto_malloc(merged_buf_len); 50 fdt_open_into(base_buf, merged_buf, merged_buf_len); 51 52 clock_t start = clock(); 53 fdt_overlay_apply(merged_buf, overlay_buf); 54 clock_t end = clock(); 55 56 if (write_fdt_to_file(out_filename, merged_buf) != 0) { 57 fprintf(stderr, "Write file error: %s\n", out_filename); 58 goto end; 59 } 60 61 // Outputs the used time. 62 double cpu_time_used = ((double)(end - start)) / CLOCKS_PER_SEC; 63 printf(" fdt_apply_overlay: took %.9f secs\n", cpu_time_used); 64 ret = 0; 65 66end: 67 if (merged_buf) dto_free(merged_buf); 68 if (overlay_buf) dto_free(overlay_buf); 69 if (base_buf) dto_free(base_buf); 70 71 return ret; 72} 73 74int main(int argc, char **argv) { 75 if (argc < 4) { 76 fprintf(stderr, "Usage: %s <base_file> <overlay_file> <out_file>\n", argv[0]); 77 return 1; 78 } 79 80 const char *base_file = argv[1]; 81 const char *overlay_file = argv[2]; 82 const char *out_file = argv[3]; 83 int ret = apply_ovleray_files(out_file, base_file, overlay_file); 84 85 return ret; 86} 87