Boot Logo Customization on NVIDIA Jetson Modules

Updated: Feb 15

In this tutorial we used NVIDIA Jetson Xavier (8GB) module on MILBOARD-XV, but you can use all types of Jetson module.


Prerequisities

  • 24 bit BMP images (x3) (640x480, 1280x720, 1920x1080)

  • PNG image (1920x1080)

  • JetPack installer host PC

  • Jetson module with carrier board

In our host PC, SDK Manager creates nvidia folder in HOME directory (~). After booting image, SDK Manager saves flashing files. Your blob file generator's full path is:

  • ~/nvidia/nvidia_sdk/<JetPack_Version>_Linux_<Jetson_Module>/Linux_for_Tegra/tools/bmp-splash


Our Xavier (8GB) boards full path is (for JetPack 4.5):

~/nvidia/nvidia_sdk/JetPack_4.5_Linux_JETSON_AGX_XAVIER_8GB/Linux_for_Tegra/tools/bmp-splash


Generate bmp.blob File

We copied bmp-splash folder into ~/Desktop. (It's up to you.)

(Hint: All details are in bmp-blob-README.txt file)


First of all, add 24 bit BMP images into bmp-splash folder.


Secondly, change config_file.example's name to config_file and change inside like that:


Install liblz4-tool and get its full path.


Next, learn Jetson module's chip in this table:


Now, open terminal and generate bmp.blob file with one of these commands:

For Xavier NX or Xavier series:

  • OUT=$PWD ./genbmpblob_L4T.sh t194 ./config_file ./BMP_generator_L4T.py /usr/bin/lz4c bmp.blob

For Nano or TX1:

  • OUT=$PWD ./genbmpblob_L4T.sh t210 ./config_file ./BMP_generator_L4T.py /usr/bin/lz4c bmp.blob

For TX2 series:

  • OUT=$PWD ./genbmpblob_L4T.sh t186 ./config_file ./BMP_generator_L4T.py /usr/bin/lz4c bmp.blob


Flash bmp.blob File

Change original bmp.blob file with your custom file. The full path of this file is:

  • ~/nvidia/nvidia_sdk/<JetPack_Version>_Linux_<Jetson_Module>/Linux_for_Tegra/bootloader/bmp.blob


Open your module in Recovery Mode. Change current directory and flash BMP file:

  • ~/nvidia/nvidia_sdk/<JetPack_Version>_Linux_<Jetson_Module>/Linux_for_Tegra

  • sudo ./flash.sh -r -k BMP --image ./bootloader/bmp.blob <your_board_config> <your_target_flash>


Change Login Logo

Copy 1080p PNG login logo into module and move into /usr/share/backgrounds. Then, change two xsessionrc files with sed command:

  • sudo mv FORECR_Login_Logo.png /usr/share/backgrounds/FORECR_Login_Logo.png

  • sed -i 's/NVIDIA_Login_Logo/FORECR_Login_Logo/g' ~/.xsessionrc

  • sudo sed -i 's/NVIDIA_Login_Logo/FORECR_Login_Logo/g' /etc/skel/.xsessionrc

  • cat ~/.xsessionrc | grep logo_path

  • cat /etc/skel/.xsessionrc | grep logo_path


[Optional] Disable Blinking Text Cursor

Open /boot/extlinux/extlinux.conf file. Remove "console=tty0" and add "vt.global_cursor_default=0"



Thanks for reading.


forecr_custom_boot
.zip
Download ZIP • 587KB

This file contains 3 types of blob files and boot logo.

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