From: Jan Luebbe <[email protected]>
Signed-off-by: Jan Luebbe <[email protected]>
---
commands/crc.c | 23 ++++++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)
diff --git a/commands/crc.c b/commands/crc.c
index 9b6a3e2..58b750e 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)
--
2.1.4
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