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