/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include "ufdt_overlay.h"
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#include "libufdt_sysdeps.h"
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#include "util.h"
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int apply_overlay_files(const char *out_filename, const char *base_filename,
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const char *overlay_filename) {
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int ret = 1;
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char *base_buf = NULL;
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char *overlay_buf = NULL;
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struct fdt_header *new_blob = NULL;
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size_t blob_len;
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base_buf = load_file(base_filename, &blob_len);
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if (!base_buf) {
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fprintf(stderr, "Can not load base file: %s\n", base_filename);
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goto end;
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}
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size_t overlay_len;
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overlay_buf = load_file(overlay_filename, &overlay_len);
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if (!overlay_buf) {
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fprintf(stderr, "Can not load overlay file: %s\n", overlay_filename);
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goto end;
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}
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struct fdt_header *blob = ufdt_install_blob(base_buf, blob_len);
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if (!blob) {
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fprintf(stderr, "ufdt_install_blob() returns null\n");
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goto end;
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}
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clock_t start = clock();
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new_blob = ufdt_apply_overlay(blob, blob_len, overlay_buf, overlay_len);
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clock_t end = clock();
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if (write_fdt_to_file(out_filename, new_blob) != 0) {
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fprintf(stderr, "Write file error: %s\n", out_filename);
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goto end;
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}
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// Outputs the used time.
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double cpu_time_used = ((double)(end - start)) / CLOCKS_PER_SEC;
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printf("ufdt_apply_overlay: took %.9f secs\n", cpu_time_used);
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ret = 0;
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end:
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// Do not dto_free(blob) - it's the same as base_buf.
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if (new_blob) dto_free(new_blob);
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if (overlay_buf) dto_free(overlay_buf);
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if (base_buf) dto_free(base_buf);
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return ret;
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}
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int main(int argc, char **argv) {
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if (argc < 4) {
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fprintf(stderr, "Usage: %s <base_file> <overlay_file> <out_file>\n", argv[0]);
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return 1;
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}
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const char *base_file = argv[1];
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const char *overlay_file = argv[2];
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const char *out_file = argv[3];
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int ret = apply_overlay_files(out_file, base_file, overlay_file);
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return ret;
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}
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