[meta-freescale] imx6q: Startup script output not shown on serial console

[Prasant J]

On Mon, Jun 8, 2015 at 7:44 PM, Prasant J <pj0585 at gmail.com> wrote:
> On Mon, Jun 8, 2015 at 5:40 PM, Daiane Angolini <daiane.list at gmail.com> wrote:
>> On Mon, Jun 8, 2015 at 5:57 AM, Prasant J <pj0585 at gmail.com> wrote:
>>> Hi,
>>>
>>> I have built the freescale linux image (for my custom board using
>>> iMX6Q) fsl_L.3.14.28-1.0.0_ga. While building I added few more
>>> packages like rpm, opkg, e2fsprogs, etc.
>>>
>>> The startup scripts do not show std output on the serial console
>>> (ttymxc0). The output is likely redirected to /dev/null. They only sow
>>> errors. Which setting (file) has to be modified to get the output on
>>> the serial console?
>>
>> http://git.yoctoproject.org/cgit/cgit.cgi/meta-fsl-arm/tree/conf/machine/include/imx6sabresd-common.inc#n6
>>
>> Take a look in the difference between file imx6sabresd-common.inc and
>> imx6sabreauto-common.inc
>>
>> Maybe it can help you
>>
>
> Thanks Daiane for your inputs!
>
> The link you pasted indicates that correct serial port must be specified.
>
> I have ensured that correct serial port is set (/etc/inittab) . I can
> see the errors but I cannot see the stdout.
> I think there is a setting for verbosity, which is set to quiet. I'm
> not sure though.
>
> FYI: I also have installed procps package.
>
> I modified the file /etc/init.d/bootmisc.sh:
> original line:  eval /sbin/sysctl -p "${SYSCTL_CONF}" $VERBOSE_REDIR
> edited line:    eval /sbin/sysctl -p "${SYSCTL_CONF}"
> (VERBOSE_REDIR is set to "1>/dev/null")
>
> After the above modification, I can see script stdout while system
> reboot or shutdown, but I cannot see the same during system startup.
>
>

I have built the yocto image again (fsl_L.3.14.28-1.0.0_ga) (framebuffer)


I verified the file:
fsl-L3.14.28-1.0.0_ga/fsl-release-bsp/sources/meta-fsl-arm/conf/machine/include/imx6sabresd-common.inc
correct console device and baud rate is selected (ttymxc0).


I have installed extra packages by adding the following line to conf/local.conf:
CORE_IMAGE_EXTRA_INSTALL += " rpm opkg freetype createrepo
libsocketcan ntp parted cairo curl python-pycurl expat harfbuzz htop
pixman tslib e2fsprogs fontconfig pango glib-2.0 opkg-utils sqlite3
python-pysqlite libcurl bzip2 dropbear python-smartpm tzdata
python-debugger python-difflib python-sqlite3 connman connman-client
e2fsprogs-tune2fs lsof msmtp iptables "


I do not see the init scripts log on the serial console (during
startup). There is no issue with console configuration as the init
scripts show log during shutdown/reboot.



If I run "ps eax", I see the following (partial output shown here):

 1424 ?        Ss     0:00 /lib/udev/udevd -d CONSOLE=/dev/null
display_lvds0= display_lvds1= SHELL=/bin/sh TERM=linux prevlevel=N
INIT_VERSION=sysvinit-2.88 PATH=/sbin:/bin:/usr/sbin:/usr/bin
ACTION=add runlevel=S RUNLEVEL=S PWD=/ VERBOSE=very TZ=/etc/localtime
PREVLEVEL=N previous=N SHLVL=2 HOME=/ _=/lib/udev/udevd
 1509 ?        S      0:00 /lib/udev/udevd -d CONSOLE=/dev/null
display_lvds0= display_lvds1= SHELL=/bin/sh TERM=linux prevlevel=N
INIT_VERSION=sysvinit-2.88 PATH=/sbin:/bin:/usr/sbin:/usr/bin
ACTION=add runlevel=S RUNLEVEL=S PWD=/ VERBOSE=very TZ=/etc/localtime
PREVLEVEL=N previous=N SHLVL=2 HOME=/ _=/lib/udev/udevd
 1510 ?        S      0:00 /lib/udev/udevd -d CONSOLE=/dev/null
display_lvds0= display_lvds1= SHELL=/bin/sh TERM=linux prevlevel=N
INIT_VERSION=sysvinit-2.88 PATH=/sbin:/bin:/usr/sbin:/usr/bin
ACTION=add runlevel=S RUNLEVEL=S PWD=/ VERBOSE=very TZ=/etc/localtime
PREVLEVEL=N previous=N SHLVL=2 HOME=/ _=/lib/udev/udevd
 1973 ?        Ss     0:00 /usr/bin/eGTouchD CONSOLE=/dev/null
display_lvds0= display_lvds1= TERM=linux SHELL=/bin/sh
INIT_VERSION=sysvinit-2.88
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
RUNLEVEL=5 runlevel=5 PWD=/ VERBOSE=very PREVLEVEL=N previous=N HOME=/
SHLVL=2 _=/usr/bin/eGTouchD
 1983 ?        Ss     0:00 /usr/bin/dbus-daemon --system
CONSOLE=/dev/null display_lvds0= display_lvds1= TERM=linux
SHELL=/bin/sh INIT_VERSION=sysvinit-2.88
PATH=/sbin:/usr/sbin:/bin:/usr/bin RUNLEVEL=5 runlevel=5 PWD=/
VERBOSE=very PREVLEVEL=N previous=N HOME=/ SHLVL=2
_=/sbin/start-stop-daemon
 1989 ?        Ss     0:00 /usr/sbin/connmand CONSOLE=/dev/null
display_lvds0= display_lvds1= TERM=linux SHELL=/bin/sh
INIT_VERSION=sysvinit-2.88 PATH=/sbin:/usr/sbin:/bin:/usr/bin
RUNLEVEL=5 runlevel=5 PWD=/ VERBOSE=very PREVLEVEL=N previous=N HOME=/
SHLVL=2 _=/usr/sbin/connmand



I edit the file: /etc/init.d/rc and exported CONSOLE=/dev/ttymxc0.
When I reboot the system and re-run "ps eax" I can see the CONSOLE env
getting correctly updated. But still no output on the serial log.


Any inputs what may be going wrong?

I'm kind of stuck here. Any information might be of help to me.


Regards, Pj