xref: /openbmc/u-boot/tools/netconsole (revision ea0364f1)
1#!/bin/sh
2
3usage() {
4	(
5	echo "Usage: $0 <board IP> [board port]"
6	echo ""
7	echo "If port is not specified, '6666' will be used"
8	[ -z "$*" ] && exit 0
9	echo ""
10	echo "ERROR: $*"
11	exit 1
12	) 1>&2
13	exit $?
14}
15
16while [ -n "$1" ] ; do
17	case $1 in
18		-h|--help) usage;;
19		--)        break;;
20		-*)        usage "Invalid option $1";;
21		*)         break;;
22	esac
23	shift
24done
25
26ip=$1
27port=${2:-6666}
28
29if [ -z "${ip}" ] || [ -n "$3" ] ; then
30	usage "Invalid number of arguments"
31fi
32
33for nc in netcat nc ; do
34	type ${nc} >/dev/null 2>&1 && break
35done
36
37trap "stty icanon echo intr ^C" 0 2 3 5 10 13 15
38echo "NOTE: the interrupt signal (normally ^C) has been remapped to ^T"
39
40stty -icanon -echo intr ^T
41(
42if type ncb 2>/dev/null ; then
43	# see if ncb is in $PATH
44	exec ncb ${port}
45
46elif [ -x ${0%/*}/ncb ] ; then
47	# maybe it's in the same dir as the netconsole script
48	exec ${0%/*}/ncb ${port}
49
50else
51	# blah, just use regular netcat
52	while ${nc} -u -l -p ${port} < /dev/null ; do
53		:
54	done
55fi
56) &
57pid=$!
58${nc} -u ${ip} ${port}
59kill ${pid} 2>/dev/null
60