diff options
Diffstat (limited to 'commands/crc.c')
| -rw-r--r-- | commands/crc.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/commands/crc.c b/commands/crc.c index 9b6a3e2a4b..58b750eb95 100644 --- a/commands/crc.c +++ b/commands/crc.c @@ -46,9 +46,10 @@ static int do_crc(int argc, char *argv[]) #ifdef CONFIG_CMD_CRC_CMP char *vfilename = NULL; #endif + char *crcvarname = NULL, *sizevarname = NULL; int opt, err = 0, filegiven = 0, verify = 0; - while((opt = getopt(argc, argv, "f:F:v:V:")) > 0) { + while((opt = getopt(argc, argv, "f:F:v:V:r:s:")) > 0) { switch(opt) { case 'f': filename = optarg; @@ -60,6 +61,12 @@ static int do_crc(int argc, char *argv[]) vfilename = optarg; break; #endif + case 'r': + crcvarname = optarg; + break; + case 's': + sizevarname = optarg; + break; case 'v': verify = 1; vcrc = simple_strtoul(optarg, NULL, 0); @@ -89,6 +96,18 @@ static int do_crc(int argc, char *argv[]) printf("CRC32 for %s 0x%08lx ... 0x%08lx ==> 0x%08lx", filename, (ulong)start, (ulong)start + total - 1, crc); + if (crcvarname) { + char *crcstr = asprintf("0x%lx", crc); + setenv(crcvarname, crcstr); + kfree(crcstr); + } + + if (sizevarname) { + char *sizestr = asprintf("0x%lx", total); + setenv(sizevarname, sizestr); + kfree(sizestr); + } + #ifdef CONFIG_CMD_CRC_CMP if (vfilename) { size = total; @@ -118,6 +137,8 @@ BAREBOX_CMD_HELP_OPT ("-F FILE", "Use file to compare.") #endif BAREBOX_CMD_HELP_OPT ("-v CRC", "Verify") BAREBOX_CMD_HELP_OPT ("-V FILE", "Verify with CRC read from FILE") +BAREBOX_CMD_HELP_OPT ("-r <var>", "Set <var> to the checksum result\n") +BAREBOX_CMD_HELP_OPT ("-s <var>", "Set <var> to the data size\n") BAREBOX_CMD_HELP_END BAREBOX_CMD_START(crc32) |