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commands: crc: support setting environment variables 

Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Jan Luebbe 2015-01-29 16:43:48 +01:00 committed by Sascha Hauer
parent 03dabc0fe4
commit 8ed32ae81b
1 changed files with 22 additions and 1 deletions
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23
commands/crc.c
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@ -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)