diff options
| -rw-r--r-- | tools/firmware-utils/Makefile | 1 | ||||
| -rw-r--r-- | tools/firmware-utils/src/mkdcs932.c | 39 |
2 files changed, 40 insertions, 0 deletions
diff --git a/tools/firmware-utils/Makefile b/tools/firmware-utils/Makefile index 45690f5949..770fcf5fd4 100644 --- a/tools/firmware-utils/Makefile +++ b/tools/firmware-utils/Makefile @@ -65,6 +65,7 @@ define Host/Compile $(call cc,fix-u-media-header cyg_crc32,-Wall) $(call cc,hcsmakeimage bcmalgo) $(call cc,mkporayfw, -Wall) + $(call cc,mkdcs932, -Wall) endef define Host/Install diff --git a/tools/firmware-utils/src/mkdcs932.c b/tools/firmware-utils/src/mkdcs932.c new file mode 100644 index 0000000000..28c67aa3b3 --- /dev/null +++ b/tools/firmware-utils/src/mkdcs932.c @@ -0,0 +1,39 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License, + * version 2 as published by the Free Software Foundation. + * + * (C) John Crispin <blogic@openwrt.org> + */ + +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <stdio.h> +#include <stdint.h> +#include <unistd.h> +#include <errno.h> + +int main(int argc, char **argv) +{ + uint32_t t = 0, sum = 0x55aa55aa; + int fd; + + if ((argc != 2) || ((fd = open(argv[1], O_RDWR)) == -1)) { + fprintf(stderr, "Usage: %s input_file\n", *argv); + return -EINVAL; + } + + lseek(fd, -4, SEEK_END); + write(fd, &t, 4); + lseek(fd, 0, SEEK_SET); + + while (read(fd, &t, 4) > 0) + sum -= t; + + lseek(fd, -4, SEEK_END); + write(fd, &sum, 4); + close(fd); + + return 0; +} |