diff options
Diffstat (limited to 'tools/firmware-utils/src/wndr3700.c')
| -rw-r--r-- | tools/firmware-utils/src/wndr3700.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/tools/firmware-utils/src/wndr3700.c b/tools/firmware-utils/src/wndr3700.c index 51e5352..97b5f1d 100644 --- a/tools/firmware-utils/src/wndr3700.c +++ b/tools/firmware-utils/src/wndr3700.c @@ -37,7 +37,10 @@ #define BPB 8 /* bits/byte */ +#define WNDR3700_MAGIC_LEN 4 + static uint32_t crc32[1<<BPB]; +static char *magic = "3700"; static void init_crc32() { @@ -64,7 +67,7 @@ static uint32_t crc32buf(unsigned char *buf, size_t len) } struct header { - uint32_t magic; + unsigned char magic[WNDR3700_MAGIC_LEN]; uint32_t crc; unsigned char stuff[56]; }; @@ -74,7 +77,7 @@ static void usage(const char *) __attribute__ (( __noreturn__ )); static void usage(const char *mess) { fprintf(stderr, "Error: %s\n", mess); - fprintf(stderr, "Usage: wndr3700 input_file output_file\n"); + fprintf(stderr, "Usage: wndr3700 input_file output_file [magic]\n"); fprintf(stderr, "\n"); exit(1); } @@ -90,9 +93,17 @@ int main(int argc, char **argv) // verify parameters - if (argc != 3) + if (argc < 3) usage("wrong number of arguments"); + if (argc > 3) + magic = argv[3]; + + if (strlen(magic) != WNDR3700_MAGIC_LEN) { + fprintf(stderr, "Invalid magic: '%s'\n", magic); + exit(1); + } + // mmap input_file if ((fd = open(argv[1], O_RDONLY)) < 0 || (len = lseek(fd, 0, SEEK_END)) < 0 @@ -110,7 +121,7 @@ int main(int argc, char **argv) // preload header memcpy(&header, input_file, sizeof(header)); - header.magic = htonl(0x33373030); /* 3700 in ascii */ + memcpy(header.magic, magic, WNDR3700_MAGIC_LEN); header.crc = 0; // create a firmware image in memory and copy the input_file to it |