UEFI support on Jetson Xavier NX

Autonomous Machines Jetson & Embedded Systems Jetson Xavier NX
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Hi,

It seems UEFI has been support Jetson Xavier NX as follows.
https://developer.download.nvidia.cn/embedded/L4T/UEFI_Readme_side_car.html?EUuOXwdz7VKbUX0pP7zotUA_gRwDhTAjqOYNDyElBKFK0j62BiADr1DCFEfBc7N7SdcVzfuVTBDcfbZZp2W-_IsET7owtN0drcg26pFNXFp5Fa8YFFcxmugqfJJCxoGXi-YXkF4

However, I have tried the step:
sudo ./flash.sh jetson-xavier-nx-uefi external

After flash run completed, system reboot and black screen. NO any display.
Could you confirm such feature support on Jetson Xavier NX platfrom?

Thanks,
weileng

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It’s supported but it’s still experimental and suitable for testing only.

  • You must be using a UEFI capable distribution like a standard release of Ubuntu for arm64, Fedora for aarch64, etc that has a 5.x linux kernel and grub2. Follow their instructions to create an sdcard image. You can’t use the existing JetPack/Linux for Tegra images based on the linux 4.9 kernel.
  • You must have a serial console connected to the UART pins on either the button header (J14) or the 40-pin header in order to interact with the bootloader and grub. The video console currently isn’t initialized until after the kernel is loaded.
  • Many things won’t work at this stage…
    • SPI
    • GPU acceleration of desktop
    • I2C on 40-pin header pins 3, 5.
    • Changing pin assignments on the 40-pin header.
  • Since you need a standard distribution, the nvidia libraries that get installed with JetPack/L4T aren’t available.
  • and more

Here’s a link to the thread I started with my first impressions…

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