Clarification on AGX Orin devkit boot process - when is the internal eMMC touched?

[S-K]

Hello.

I noticed the high-level documentation about the AGX Orin boot flow:

> Jetson AGX Orin, Orin NX and Orin Nano Boot Flow — NVIDIA Jetson Linux Developer Guide

However, it does not explicitly state what storage (if any, some of the processes seem to be hard-coded, other than some user-modifiable EEPROM?) it needs to touch at what point.

I’m mostly interested in what way the boot process is affected if, say, a dog were to eat the eMMC storage or it breaks in some way.

UEFI enumerates the eligible boot devices, but does the Orin boot process need to touch the eMMC flash on the way in order to get to a UEFI boot (menu), where we would preferentially select an external boot medium, as supported by recent Jetson releases?

Thank you in advance.

[WayneWWW]

UEFI is on the QSPI flash of the module. So before using emmc, it is all on the QSPI.
Also have other processor out there like bpmp to handle the power configuration.

[S-K]

That was quick, thank you!