Flash Xavier NX JP4.4. on external USB drive

Robotics & Edge Computing Jetson & Embedded Systems Jetson Xavier NX
1

Hi,

I have a Xavier NX emmc modules with 8GB memory connected to our custom carrier board which has a 64GB usb external storage
I want to flash my kernel on USB of the board (JetPack 4.4)

the command i use is:
sudo ./flash.sh jetson-xavier-nx-devkit-emmc sda1

but the board does not boot up as expected.

4.4_flashlog.txt (51.1 KB)

boot log:
4.4_bootlog.txt (13.9 KB)

3

Hi,

Have you modified the eeprom value?
some examples like this docs mentioned
https://docs.nvidia.com/jetson/archives/r35.4.1/DeveloperGuide/text/HR/JetsonModuleAdaptationAndBringUp/JetsonOrinNxNanoSeries.html#eeprom-modifications

Thanks

4

@DavidDDD

which is the corresponding file for JetPack 4.4? I do a grep -nr “cvb_eeprom_read_size” but do not find it.
I am familiar with JP5.1 but i need it for JP4.4

5

Hi,

Sorry for mislead.
It’s fine with eeprom.

We need more info, so could you edit Linux_for_Tegra/bootloader/extlinux.conf to remove quiet and attach the flashing log again.

LABEL primary
      MENU LABEL primary kernel
      LINUX /boot/Image
      INITRD /boot/initrd
      APPEND ${cbootargs}

Also how do you prepare the rootfs?

Thanks

6

@DavidDDD

4.4_bootlog.txt (11.2 KB)
4.4_flashlog.txt (51.1 KB)

The board does not boot up as expected.
My use case is that i have a custom carrier board for xavier NX som
the carrier board has an onboard memory of 64 gb which acts as a USB drive and Xavier NX som is 8 gb emmc
i am trying to flash my kernel on 64 gb emmc on the board. from Linux_for_Tegra environment of JP4.4 downloaded from SDK manager

7

Hi,

It’s strange with your bootlog.txt.
Do you upload the right one?

Thanks

8

@DavidDDD

How to setup username and password for JP4.4 over flashing? The JP5 has a script create_default_user.sh in Linux_for_Tegra/tools/ .
what is the equivalent for JP4.4 i do not see any script

9

Hi,

create_default_user.sh supported in JP4.6.6
You could get the file from it.

Thanks

10

@DavidDDD

Does the Xavier NX SOM emmc’s data have to be erased in order to boot from external emmc connected to my carrier board?

11

Hi

Yes, You need backup your data before flashing.

Thanks

13

This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.