Hey @Romain.Donze,
I talked with the R&D team and we investigated further on the boot script you provided, and experimented with our BSP image. Take a look at this section from the script you provided:
BASE_INIT="$(readlink -f "@base_sbindir@/init")"
INIT_SYSTEMD="@systemd_unitdir@/systemd"
It seems that these variables were not substituted during your Yocto build. Switching the toradex-mount-bootpart.sh file in our reference image for yours gave out the same output as you described, and the /boot also came out empty. Try substituting your file for this one: toradex-mount-bootpart.sh (2.3 KB)
About the device tree overlay, it is possible that some change in the device tree affected your overlay. Since this thread is focused more on the issue with the boot directory, can you open another one regarding your device tree overlay? I’m already investigating and I’ll try helping you further there.
Let me know if the script I sent you works.
Best regards,