tools/kwboot: Add parameters to set delay and timeout via cmdline

To support the Armada 38x, new values for the request-delay and the
response-timeout are needed. As the values already implemented in
this tool (for Kirkwood and Armada XP) don't seem to work here.
To make this more flexible, lets add make those 2 parameters
configurable via the cmdline. Here the new parameters:

-q <req-delay>:  use specific request-delay
-s <resp-timeo>: use specific response-timeout

For the Marvell DB-88F6820 these values are known to work:

One board:
-q 2 -s 1

2nd board:
-q 5 -s 5

So this seems to be even board specific. But with this patch now
those values can be specified and tested via the cmdline.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Kevin Smith <kevin.smith@elecsyscorp.com>
Cc: Dirk Eibach <dirk.eibach@gdsys.cc>
Cc: Luka Perkov <luka.perkov@sartura.hr>

tools/kwboot.c

@@ -657,7 +657,7 @@ static void
 kwboot_usage(FILE *stream, char *progname)
 {
 	fprintf(stream,
-		"Usage: %s [-d | -a | -b <image> | -D <image> ] [ -t ] [-B <baud> ] <TTY>\n",
+		"Usage: %s [-d | -a | -q <req-delay> | -s <resp-timeo> | -b <image> | -D <image> ] [ -t ] [-B <baud> ] <TTY>\n",
 		progname);
 	fprintf(stream, "\n");
 	fprintf(stream,
@@ -667,6 +667,8 @@ kwboot_usage(FILE *stream, char *progname)
 		"  -D <image>: boot <image> without preamble (Dove)\n");
 	fprintf(stream, "  -d: enter debug mode\n");
 	fprintf(stream, "  -a: use timings for Armada XP\n");
+	fprintf(stream, "  -q <req-delay>:  use specific request-delay\n");
+	fprintf(stream, "  -s <resp-timeo>: use specific response-timeout\n");
 	fprintf(stream, "\n");
 	fprintf(stream, "  -t: mini terminal\n");
 	fprintf(stream, "\n");
@@ -699,7 +701,7 @@ main(int argc, char **argv)
 	kwboot_verbose = isatty(STDOUT_FILENO);
 
 	do {
-		int c = getopt(argc, argv, "hb:ptaB:dD:");
+		int c = getopt(argc, argv, "hb:ptaB:dD:q:s:");
 		if (c < 0)
 			break;
 
@@ -731,6 +733,14 @@ main(int argc, char **argv)
 			msg_rsp_timeo = KWBOOT_MSG_RSP_TIMEO_AXP;
 			break;
 
+		case 'q':
+			msg_req_delay = atoi(optarg);
+			break;
+
+		case 's':
+			msg_rsp_timeo = atoi(optarg);
+			break;
+
 		case 'B':
 			speed = kwboot_tty_speed(atoi(optarg));
 			if (speed == -1)