Hi Mauro,
On 21.04.2015 13:24, Mauro Carvalho Chehab wrote:
Em Tue, 21 Apr 2015 03:20:13 +0300
Leon Anavi <[email protected]> escreveu:
Hi Mauro,
Well done. Thank you for sharing this very useful tutorial!
Anytime!
I have Raspberry Pi 2 and tonight I tried the tutorial before going to
bed. Following the described steps I managed to build an image but it
fails to boot due to a kernel panic. Please have a look at my logs:
https://gist.github.com/leon-anavi/386e81df83b0b5b1d62d
I got the same result using two different microSD cards. I had a long
day so may be I am missing something simple. Have you experienced
something similar and could you please provide me hints how to solve it?
Here, everything is booting smoothly, but I didn't try to use a serial
console or to run it in kdbg mode. Perhaps it reached some race condition
at Kernel level. Yet, from this message:
PANIC: Attempted to kill init! exitcode=0x00007f00
I suspect that systemd died for some unknown reason.
That's said, before adding the init to use systemd at cmdline.txt,
I noticed that, when exiting from init via shutdown, a Kernel panic
was happening.
So, I suspect that there's a bug at the Raspberry PI 2 Kernel that
causes a panic at shutdown, depending on the exit condition (as I
didn't notice such bug when systemd is running on my system).
Yesterday I built Tizen:Common image for Raspberry Pi 2 from scratch and
it booted fine. Several days ago I tried it a pre-compiled image from
http://files.s-osg.org/tizen-on-rpi2/ It also booted successfully.
Thanks,
Leon
Btw some information that might be useful for other developers. The
procedure to enable serial debugging on Raspberry Pi 2 is the same as on
the old model of the board. File cmdline.txt from the boot partition
should be modified and instructions for serial console should be added
as in the example below:
dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200
console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4
init=/lib/systemd/systemd rw rootwait debug
USB to UART cable with serial output 3.3V voltage levels such as Olimex
USB-Serial-Cable-F should be connected to GPIO of RPI2 as follows:
* The RX line of the cable (GREEN wire if you are using Olimex
USB-Serial-Cable-F) should go to pin 8 (TX line) of HummingBoard,
* The TX line of the cable (RED wire if you are using Olimex
USB-Serial-Cable-F) should go to pin 10 (RX line),
* The BLUE wire if you are using Olimex USB-Serial-Cable-F should go to
pin 6 (GND).
Pay attention that the colours of the cable may vary depending on the
vendor. If you have USB console cable from Adafruit please have a look
at:
https://learn.adafruit.com/adafruits-raspberry-pi-lesson-5-using-a-console-cable/connect-the-lead
Thanks,
Leon
Thanks!
Mauro
--
Leon Anavi
Software Engineer
Mob : +359 88 527 7901
konsulko.com
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