Hey there

i'm make a project using Fonera 2100 to connect with my PIC16F chip
so i need to disable console at ttyS0 because i need that serial port to comunicate with the others chips
i searched tons of times at google about that serial console but i don't know how we can disable it

thanks in advance

any help?

Only way is probably disable it in inittab and remove it from kernel config in target/linux/architecture.
In inittab try remove:

ttyS0::askfirst:/bin/ash --login

In kernel config:

CONFIG_CMDLINE="rootfstype=squashfs,yaffs,jffs2 noinitrd console=ttyS0,115200"
replace with:
CONFIG_CMDLINE="rootfstype=squashfs,yaffs,jffs2 noinitrd"

how i disable it on kernel? i need to compile all again? thx

I don't know other way. You must recompile kernel again.

can you post all steps i need to do? because i'm new on linux and in this things :S sorry

This will be very dificult because you must know how to compile programs in linux.
I look for info about fonera and I found firmware use serial console to display info about boot process,
then maybe disabling serial console doesn't help.
Mayby only thing you will need is disable shell on /etc/inittab as I post in previous post.
info about fonera:
http://nuwiki.openwrt.org/toh/fon/fonera
http://wiki.cuwin.net/index.php?title=F … th_OpenWRT

(Last edited by jaro on 31 Mar 2010, 15:21)

i already tried that on inittab commenting ttyS0 line but when i need to run any program using serial port it says it is busy maybe i need to compile kernel with that 2 things

by the way i already know how to compile kernel, i already was at command: make menuconfig, but i didn't saw any option to disable console so i posted here how to disable serial console

(Last edited by pedrodv on 31 Mar 2010, 16:15)

Take a look here.

Ok, try edit file in build host
If fonera is Atheros AR231x/AR5312 architecture then edit trunk/target/linux/atheros/config-2.6.30 and change:

CONFIG_CMDLINE="console=ttyS0,9600 rootfstype=squashfs,jffs2"

to:

CONFIG_CMDLINE="rootfstype=squashfs,jffs2"

so for compiling that we need to download the source code, last time i tried i downloaded it from http://downloads.openwrt.org/kamikaze/8 … ce.tar.bz2 i downloaded it from the right place?

\8.09.2\target\linux\atheros\config-default:

CONFIG_CMDLINE="console=ttyS0,9600 rootfstype=squashfs,jffs2 init=/etc/preinit"

i need to change to:

CONFIG_CMDLINE="rootfstype=squashfs,jffs2 init=/etc/preinit" ? thx

(Last edited by pedrodv on 31 Mar 2010, 16:43)

Yes, try this. Kamikaze 8.09.2 is last stable version.
I use trunk  - development version from svn.
But I think disabling console doesn't help and problem is probably something else.

(Last edited by jaro on 31 Mar 2010, 17:28)

well i can give you the site for more information, i already compile some software with sdk but only with tutorials lol http://www.jbprojects.net/projects/wifirobot/
the use 2 serial ports, one for console and another for the program carserver so i though if we disable console on ttyS0 we can use ttyS0 to that program, i already have stty and setserial.
thanks for the help and sorry if i'm to novice in this tinhgs :S

what aditional packages i need to compile the same software as aheros? like with luci, all that options...

(Last edited by pedrodv on 31 Mar 2010, 17:59)

I look at source of carserver.c. It has hardcoded tts/1 serial device in it. Did you change it to /dev/ttyS0 or /dev/tts/0?

yes i already changed it but when i press FORWARD my forward testing LED doesnt work :S
thats why i thought i need to disable serial console maybe doing some conflicts

(Last edited by pedrodv on 1 Apr 2010, 01:30)

any news? thx

to compile kernel with extra packages we can just put xxx.ipk package on /packages and then select them on make menuconfig?

Maybe someone knows how to compile a unique busybox with setconsole enabled for Atheros based routers and run
$> mknod -m 622 /dev/tty0 c 4 0
$> ./busybox setconsole /dev/tty0

Check the following link. There's a working busybox with setconsole and stty enabled for Broadcom based routers.
DD-WRT Forum :: View topic - Turn off serial console, stty

And try these,
OpenWrt / Serial dev/tts/0
OpenWrt / Fonera I/O?
OpenWrt / Use of /dev/tts/0

And there's a good reason to do this,
OpenWrt / Serial port
to turn FON2200 into a cheap ethernet to RS232 converter.

Edit:
I just read that kernel messages are still sent out to serial console so re-compiling might be necessary.
OpenWrt / disable serial console completely

Or try the Firmware Modification Kit.

Note that even you can unbind /dev/ttyS0 from console, the Redboot/CFE messages are still sent out to console.

/src/linux/danube/linux-2.6.23/Documentation/serial-console.txt - DD-WRT - Trac
/src/linux/danube/linux-2.6.23/Documentation/networking/netconsole.txt - DD-WRT - Trac

(Last edited by fyi on 12 Apr 2010, 10:54)

hum, what do you think about this
compile and change this:

\8.09.2\target\linux\atheros\config-default:

CONFIG_CMDLINE="console=ttyS0,9600 rootfstype=squashfs,jffs2 init=/etc/preinit"

i need to change to:

CONFIG_CMDLINE="rootfstype=squashfs,jffs2 init=/etc/preinit" ?

and that thing on inittab

i used image builder from atheros openwrt, tomorrow i will try with the new kernel

(Last edited by pedrodv on 13 Apr 2010, 23:33)

hey again, i decidec to compile kamikaze but i had one error and dunno what do to :S
i downloaded http://downloads.openwrt.org/kamikaze/8 … ce.tar.bz2
1. changed /target/linux/atheros/config-default
1.1: CONFIG_CMDLINE="console=ttyS0,9600 rootfstype=squashfs,jffs2 init=/etc/preinit" to CONFIG_CMDLINE="rootfstype=squashfs,jffs2 init=/etc/preinit"

2.  ./scripts/feeds update -a
    ./scripts/feeds install webif

3. make menuconfig
3.1 changed target system to atheros 231x/5312
3.2 select all packages by default (y)
3.3 busybox added setconsole and stty

4. make

and after 2 hours (aprox.) i got this error:

make -r world: build failed. Please re-run make with V=99 to see what's going on make: *** [world] Error 1

can any1 help me? :S what i'm doing wrong?

btw i think i got that error after or during compiling iptables, i'm not sure but could be something wrong with iptables thx

(Last edited by pedrodv on 19 Apr 2010, 23:34)

make[1] world
make[2] target/compile
make[3] -C target/linux compile
make[2] package/cleanup
make[2] package/compile
make[3] -C package/base-files compile
make[3] -C package/bridge-utils compile
make[3] -C package/busybox compile
make[3] -C package/dnsmasq compile
make[3] -C package/dropbear compile
make[3] -C package/e2fsprogs compile
make[3] -C package/lua compile
make[3] -C feeds/luci/bitlib compile
make[3] -C feeds/luci/luaposix compile
make[3] -C feeds/packages/libs/libnotimpl compile
make[3] -C package/uci compile
make[3] -C feeds/luci/luci-addons compile
make[3] -C feeds/luci/luasocket compile
make[3] -C feeds/packages/net/olsrd compile
make[3] -C package/iproute2 compile
make[3] -C package/iptables compile
make[3] -C package/firewall compile
make[3] -C package/qos-scripts compile
make[3] -C package/libtool compile
make[3] -C package/libpcap compile
make[3] -C package/zlib compile
make[3] -C feeds/packages/libs/rrdtool-1.0.x compile
make[3] -C feeds/packages/utils/collectd compile
make[3] -C feeds/packages/net/miniupnpd compile
make[3] -C feeds/packages/net/ntpclient compile
make[3] -C feeds/packages/net/ddns-scripts compile
make[3] -C feeds/luci/luci compile
make[3] -C package/ncurses compile
make[3] -C feeds/packages/utils/nano compile
make[3] -C package/openssl compile
make[3] -C package/wireless-tools compile
make[3] -C package/madwifi compile
make[3] -C package/mac80211 compile
make[3] -C package/libnl compile
make[3] -C package/hostapd compile
make[3] -C package/hotplug2 compile
make[3] -C package/kernel compile
make[3] -C package/mmc_over_gpio compile
make[3] -C package/mtd compile
make[3] -C package/linux-atm compile
make[3] -C package/ppp compile
make[3] -C package/udev compile
make[3] -C package/util-linux-ng compile
make[2] package/install
make[3] -C package/base-files install
make[3] -C package/bridge-utils install
make[3] -C package/busybox install
make[3] -C package/dnsmasq install
make[3] -C package/dropbear install
make[3] -C package/e2fsprogs install
make[3] -C feeds/luci/bitlib install
make[3] -C feeds/luci/luaposix install
make[3] -C feeds/luci/luci install
make[3] -C feeds/luci/luci-addons install
make[3] -C feeds/packages/net/ddns-scripts install
make[3] -C feeds/packages/utils/nano install
make[3] -C feeds/packages/net/ntpclient install
make[3] -C package/firewall install
make[3] -C package/hostapd install
make[3] -C package/hotplug2 install
make[3] -C package/iproute2 install
make[3] -C package/iptables install

make -r world: build failed. Please re-run make with V=99 to see what's going on make: *** [world] Error 1

i got this

by the way i'm compiling with make V=99 to see more detailed error, can any1 help me in this problem?

(Last edited by pedrodv on 20 Apr 2010, 13:08)

ok i compiled it successfully.
When i tested it serial port was (again) busy :S

i dont know what to do now :S

Karosium: Fonera 1-wire MicroLAN extension

giving up on DD-WRT « Manifest Density

You should also modify /etc/inittab.

(Last edited by fyi on 20 Apr 2010, 23:13)

how he decompressed lzma file to chage console= null?

Do you mean "LZMA SDK from 7zip?"

(Last edited by fyi on 20 Apr 2010, 23:17)