Boot device order

Autonomous Machines Jetson & Embedded Systems Jetson AGX Xavier
1

I would like to understand how to set default booting method to USB, and in case there was no bootable USB device detected, continue to run from eMMC.

Following l4t documentation, I have configured boot-order to “sd”, “usb”, “net”, “emmc” in cbo.dts, built DTB and flashed the board with -k CPUBL-CFG. But then, depending on the flash method it either boots always from eMMC (neglecting USB drive) or stops if no such USB device was found.

How to properly use boot-order property of cbo.dts file?

Thanks a lot!

2

I remember this feature only helps you to select which one is the external boot drive.
It does not have error tolerance mechanism.

I’ll check with internal team for more information.

3

Please refer to the cboot source-> bootloader/partner/common/lib/linuxboot/linux_load.c

Turns out it should support what you want.

4

I forgot to clarify one more thing.

What cbo can do is fetching kernel and kernel-dtb from either emmc or external storage.
This does not fetch the root file system.