127 lines
3.1 KiB
C
127 lines
3.1 KiB
C
/* tools/mkbootimg/mkdtbimg.c
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**
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** Copyright 2016-2017, The LineageOS 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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** December 2016, Christopher N. Hesse
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** Separate dt creation from mkbootimg program.
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**
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** January 2017, Christopher N. Hesse
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** Adjust to dtbToolCM call syntax.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <limits.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <arpa/inet.h>
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#include <assert.h>
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#include <dirent.h>
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#include <err.h>
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#include <stdint.h>
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#include <dtbimg.h>
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int usage(void)
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{
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fprintf(stderr,"usage: mkdtimg\n"
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" --dt_dir <dtb path>\n"
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" -o|--output <filename>\n"
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);
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return 1;
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}
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int main(int argc, char **argv)
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{
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char *dtimg = 0;
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char *dt_dir = 0;
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void *dt_data = 0;
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unsigned pagesize = 0;
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unsigned default_pagesize = 2048;
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uint32_t dt_size;
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int fd;
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struct stat sbuf;
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argc--;
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argv++;
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while(argc > 0){
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char *arg = argv[0];
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char *val = argv[1];
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if(argc < 1) {
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return usage();
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}
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argc -= 2;
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argv += 2;
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if(!strcmp(arg, "--output") || !strcmp(arg, "-o")) {
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dtimg = val;
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} else if (!strcmp(arg, "--dt_dir")) {
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dt_dir = val;
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} else if (!strcmp(arg, "-p")) {
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// Ignore this parameter
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} else if (!strcmp(arg, "-s")) {
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pagesize = strtol(val, NULL, 10);
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if (pagesize == 0)
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pagesize = default_pagesize;
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} else {
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// Check if this is the dtb path
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int err = stat(arg, &sbuf);
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if (err != 0 || !S_ISDIR(sbuf.st_mode))
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return usage();
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dt_dir = arg;
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}
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}
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if(dtimg == 0) {
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fprintf(stderr,"error: no output filename specified\n");
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return usage();
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}
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if(dt_dir == 0) {
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fprintf(stderr,"error: no dtb path specified\n");
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return usage();
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}
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dt_data = load_dtbh_block(dt_dir, pagesize, &dt_size);
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if (dt_data == 0) {
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fprintf(stderr, "error: could not load device tree blobs '%s'\n", dt_dir);
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return 1;
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}
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fd = open(dtimg, O_CREAT | O_TRUNC | O_WRONLY, 0644);
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if(fd < 0) {
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fprintf(stderr,"error: could not create '%s'\n", dtimg);
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return 1;
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}
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if(write(fd, dt_data, dt_size) != dt_size) goto fail;
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return 0;
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fail:
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unlink(dtimg);
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close(fd);
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fprintf(stderr,"error: failed writing '%s': %s\n", dtimg,
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strerror(errno));
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return 1;
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}
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