Error: null input file! in nvbootctrl

[albertbu]

HI, I'm trying to implement the AB boot on our custom board, based on Orin NX. I succeed to build the redundant partitions, but when I try to check the status of the boot slots I get

root@mach-jetson:ü# nvbootctrl verify
Info: variable BootChainFwStatus is not found.
Error: null input file!
Warning: Failed to get chip id from config

In my conf file I have

USE_REDUNDANT_FLASH_LAYOUT_DEFAULT = "1"
IMAGE_INSTALL:append = " tegra-uefi-capsules tegra-redundant-boot"
TNSPEC_BOOTDEV = "nvme0n1p1"

What am I doing wrong?
Thanks in advance

[dwalkes]

Which branch? Can you reproduce with https://github.com/OE4T/tegra-demo-distro and an Orin NX based MACHINE there with similar settings?

Based on the similar failures at #1531 my suspicion is that it has something to do with the MACHINE TEGRA_BUPGEN_SPECS but that's just a guess. I would try to compare my setup with a working similar tegra-demo-distro setup as a starting point.

[albertbu]

I'm using scartgath - latest tegra version
Is there a step-by-step guide to achieve this?
I am not touching TEGRA_BUPGEN_SPECS , it should come from the orin-nano.inc file

[dwalkes]

Is there a step-by-step guide to achieve this?

Do you mean to build tegra demo distro with scarthgap? If so it's at https://github.com/OE4T/tegra-demo-distro/tree/scarthgap?tab=readme-ov-file#setting-up

[albertbu]

No, about implementing AB boot correctly

[dwalkes]

What you've got should be sufficient. I suspect it will work on tegra-demo-distro on the scarthgap branch, I've used it there recently.

[albertbu]

HI
I tried just now to pull the latest tegra. Same result.
I'm on
commit caf164e (HEAD, origin/scarthgap)
What can be the cause?

[albertbu]

Hi,
where is the source code of nvbootctrl? Maybe I'll get more insights reading the code

[madisongh]

That tool is provided by NVIDIA in binary form only, unfortunately.

[albertbu]

Hi, At least can I know which files is trying to access? I built a terga demo distro and of course it looks fine, but I’d like to know the exact mechanism and files needed by all the AB switching process Thanks! Get Outlook for iOS<https://aka.ms/o0ukef>

…

________________________________ From: Matt Madison ***@***.***> Sent: Thursday, July 25, 2024 12:18:06 AM To: OE4T/meta-tegra ***@***.***> Cc: albertbu ***@***.***>; Author ***@***.***> Subject: Re: [OE4T/meta-tegra] Error: null input file! in nvbootctrl (Discussion #1634) You don't often get email from ***@***.*** Learn why this is important<https://aka.ms/LearnAboutSenderIdentification> That tool is provided by NVIDIA in binary form only, unfortunately. — Reply to this email directly, view it on GitHub<#1634 (reply in thread)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/ABRZY4AZOJKQYHTSFYKF263ZOAKY5AVCNFSM6AAAAABLI62QK2VHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTAMJUGI2DSMI>. You are receiving this because you authored the thread.Message ID: ***@***.***>

[dwalkes]

You can use strace for this.

[albertbu]

OK I found the root cause. Our build uses openrc instead of systemd, and some stuff is not in place

[dwalkes]

I just noticed this myself today, it can happen when /etc/nv_boot_control.conf is not present when nvbootctrl is invoked, which can happen when nvbootctrl is run before setup-nv-boot-control.service runs on systemd or the equivalent.