Raspberry Pi 3 – SWUpdate Yocto image boots but no root terminal

[Suraj Sonawane]

Hi all,

I am trying to bring up SWUpdate on a Raspberry Pi 3 using using Yocto Kirkstone.
I followed this guide:
https://stackoverflow.com/questions/60724524/step-by-step-walk-through-on-how-to-use-swupdate-on-raspberry-pi-or-any-embedded

I built with:

MACHINE=raspberrypi3 bitbake update-image

The image boots, the kernel comes up fine, and I can see system services starting (network, sshd, nfs, etc.). However, I do not get a root terminal on the serial console or HDMI. The ACT LED keeps blinking at a fixed interval, and the system just stops after showing the last log lines.

Here are the final messages from the boot log:

udhcpc: broadcasting discover
udhcpc: no lease, forking to background
done.
Starting OpenBSD Secure Shell server: sshd
done.
Starting rpcbind daemon...done.
...
Starting system log daemon...0
Starting crond: OK
At this point, I don’t get a login prompt or shell.

I have attached the full boot logs for reference.

Can someone please help me:

• Do I need to add anything in local.conf or IMAGE_FEATURES?

• or this issue with any existing config.