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). > 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 _______________________________________________ Dev mailing list [email protected] https://lists.tizen.org/listinfo/dev
