Enabling UART and Network interface on boot

[Hariom-avin]

Hello,

I am using NVIDIA Xavier hardware and using doflash for flashing the image.

I am using meta-tegra for the build.

I am not able to enable the uart serial terminal and Ethernet interface on boot. To enable the Ethernet interface i need to give command to make the interface up.

I want this Ethernet interface to get enabled as soon as image boots up.

I request you all to please suggest me how I can do it.

Regards,
Hariom

[madisongh]

Can you be more specific about what you're doing and what the problem is?

• Which Xavier model is this, and is it a development kit, or custom hardware of some kind?
• What image are you building?
• What do you mean by the UART and the Ethernet interface being "not enabled"?
• Which UART?

[Hariom-avin]

Hi Madisongh,

I am verifying Yocto build on NVIDIA hardware and I want to observe the logs on booting the flashed image.

1. It is NVIDIA JETSON XAVIER hardware.
2. I am building core-image-minimal image.
3. My intention was to say that, i am not able to see the terminal output using UART as well i am not able to ping the hardware. Also if i am trying to get the interface details using ifconfig command i am getting blank output. I also verified the /etc/network/interfaces file it is having a valid IP configuration inside it.
   To make the network interface up user need to manually make it up by giving ifup command.
4. I want to see serial terminal output using micro USB which works as UART for terminal logs.

Regards,
Hariom

[Hariom-avin]

Hi Madisong,

Thanks for reply.

I tried above solution and I am able to login the terminal without password. But when i am trying to login from ssh I am getting the "Permission denied" message. I am using ssh [email protected] as the command.

Following are the changes done in local.conf fie:
EXTRA_IMAGE_FEATURES += "allow-empty-password"
EXTRA_IMAGE_FEATURES += "empty-root-password"

[madisongh]

I think you need allow-root-login as well

[Hariom-avin]

Hi Madisongh,

Thanks for your reply, I checked it and it is working fine for me.

I have one more question Madisongh. I want to share NVIDIA Xavier image present in my build folder with one of my colleague, then my college will be flashing this image to the target hardware.
So my doubt is, what are the various files i need to share so it can be flashed on target board using 'doflash' script.

Regards,
Hariom

[madisongh]

They only need the tegraflash package. It contains everything needed for flashing. There are other notes on that linked wiki page that you may want to share about the flashing process, too.

[Hariom-avin]

Hi Madisongh,

Thanks for your support. I was able to solve all technical difficulties. Thanks again.