Whether the arm trust firmware is used on NVIDIA AGX Orin platform

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Orin
1

Hi Experts,

I download Jetson_Linux_r36.4.3_aarch64.tbz2 from link https://developer.nvidia.com/downloads/embedded/l4t/r36_release_v4.3/release/Jetson_Linux_r36.4.3_aarch64.tbz2
and then uncompress it. In directory Linux_for_Tegra/bootloader, I don’t find out the bl31.bin.
But in below link, It mentions that there is ATF loaded during boot flow.
Jetson AGX Orin, Orin NX and Orin Nano Boot Flow — NVIDIA Jetson Linux Developer Guide

So, I am a little confused, could you please help to explain that, and where I can get the ATF binary file?

thanks,
LImeng

2

you need to download public sources tar file and inside that you can find sources for ATF etc.

Op-tee sources are available in nvidia-jetson-optee-source.tbz2

Atf_src.tbz2

4

hello meng.li,

in general, we’ll extract atf_src.tbz2 and nvidia-jetson-optee-source.tbz2 to the same folder, such as.. atf_and_optee/
there’s readme file, atf_and_optee_README.txt, as you can see, bl31.bin is used to generate the TOS image.

5

Thanks for all of your reply.

Regards,
Limeng

7

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