blob: aace2863c145227c2a2f9f96cb0a2619819c15a2 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the Free
# Software Foundation; version 2 of the License
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
# for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc., 59
# Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# AUTHOR
# Adrian Freihofer <adrian.freihofer (at] neratec.com>
import re
from wic import msger
def serial_console_form_kargs(kernel_args):
"""
Create SERIAL... line from kernel parameters
syslinux needs a line SERIAL port [baudrate [flowcontrol]]
in the syslinux.cfg file. The config line is generated based
on kernel boot parameters. The the parameters of the first
ttyS console are considered for syslinux config.
@param kernel_args kernel command line
@return line for syslinux config file e.g. "SERIAL 0 115200"
"""
syslinux_conf = ""
for param in kernel_args.split():
param_match = re.match("console=ttyS([0-9]+),?([0-9]*)([noe]?)([0-9]?)(r?)", param)
if param_match:
syslinux_conf += "SERIAL " + param_match.group(1)
# baudrate
if param_match.group(2):
syslinux_conf += " " + param_match.group(2)
# parity
if param_match.group(3) and param_match.group(3) != 'n':
msger.warning("syslinux does not support parity for console. {} is ignored."
.format(param_match.group(3)))
# number of bits
if param_match.group(4) and param_match.group(4) != '8':
msger.warning("syslinux supports 8 bit console configuration only. {} is ignored."
.format(param_match.group(4)))
# flow control
if param_match.group(5) and param_match.group(5) != '':
msger.warning("syslinux console flowcontrol configuration. {} is ignored."
.format(param_match.group(5)))
break
return syslinux_conf
|
