Hi all,
I would like to know is there any command could let Xavier NX reboot and load recovery image?
So that Xaveir NX can boot in recovery mode.
$ sudo reboot forced-recovery
Hi JerryChang,
I don’t mean let Xavier NX enter RCM mode. I mean that let Xavier NX load recovery.img and boot in recovery mode. So that it will find the /ota_work and start ota process.
hello FrankPCP,
please access developer guide, Over-the-Air Update.
please install JetPack release to your local host, there’re script files for OTA tools,
for example, ~/nvidia/nvidia_sdk/JetPack_<version>_Linux_<platform>/Linux_for_Tegra/tools/ota_tools/version_upgrade/
you may see-also the workflow for the steps performed on the host/target to trigger the OTA process.
thanks
Hi JerryChang,
I read the tools/ota_tools/version_upgrade/nv_ota_common.func and see the function write_kernel_bootctrl(). It write kernel_bootctrl.bin into kernel-bootctrl partition for rebooting the Xavier NX to recovery mode. The question is I cannot find the kernel-bootctrl partition on Xavier NX with L4T r35.1.0.
What partition should I write the kernel_bootctrl.bin to on L4T r35.1.0?
pcp@pcp-desktop:/dev/disk$ ls
by-id by-partlabel by-partuuid by-path by-uuid
pcp@pcp-desktop:/dev/disk$ cd by-part
by-partlabel/ by-partuuid/
pcp@pcp-desktop:/dev/disk$ cd by-part
by-partlabel/ by-partuuid/
pcp@pcp-desktop:/dev/disk$ cd by-partlabel/
pcp@pcp-desktop:/dev/disk/by-partlabel$ ls
adsp-fw_b eks_b kernel-dtb recovery-dtb sce-fw_b
APP esp kernel-dtb_b RECROOTFS secure-os_b
bpmp-fw_b kernel rce-fw_b reserved_for_chain_A_user UDA
bpmp-fw-dtb_b kernel_b recovery reserved_for_chain_B_user
pcp@pcp-desktop:/dev/disk/by-partlabel$ sudo gdisk /dev/mmcblk0
[sudo] password for pcp:
GPT fdisk (gdisk) version 1.0.5
The protective MBR's 0xEE partition is oversized! Auto-repairing.
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present
Found valid GPT with protective MBR; using GPT.
Command (? for help): p
Disk /dev/mmcblk0: 30777344 sectors, 14.7 GiB
Sector size (logical/physical): 512/512 bytes
Disk identifier (GUID): 140DA1AB-7DD5-4F92-A4A7-9B4FFF274B3D
Partition table holds up to 128 entries
Main partition table begins at sector 2 and ends at sector 33
First usable sector is 40, last usable sector is 30777311
Partitions will be aligned on 8-sector boundaries
Total free space is 1 sectors (512 bytes)
Number Start (sector) End (sector) Size Code Name
1 40 29360167 14.0 GiB 0700 APP
2 29360168 29491239 64.0 MiB 0700 kernel
3 29491240 29492135 448.0 KiB 0700 kernel-dtb
4 29492136 29558783 32.5 MiB 0700 reserved_for_chain_...
5 29558784 29563903 2.5 MiB 0700 secure-os_b
6 29563904 29564031 64.0 KiB 0700 eks_b
7 29564032 29566079 1024.0 KiB 0700 adsp-fw_b
8 29566080 29568127 1024.0 KiB 0700 rce-fw_b
9 29568128 29570175 1024.0 KiB 0700 sce-fw_b
10 29570176 29573247 1.5 MiB 0700 bpmp-fw_b
11 29573248 29575295 1024.0 KiB 0700 bpmp-fw-dtb_b
12 29575296 29706367 64.0 MiB 0700 kernel_b
13 29706368 29707263 448.0 KiB 0700 kernel-dtb_b
14 29707264 29773823 32.5 MiB 0700 reserved_for_chain_...
15 29773824 29937663 80.0 MiB 0700 recovery
16 29937664 29938687 512.0 KiB 0700 recovery-dtb
17 29938688 30143487 100.0 MiB 0700 RECROOTFS
18 30143488 30274559 64.0 MiB EF00 esp
19 30274560 30777310 245.5 MiB 0700 UDA
Command (? for help):
hello FrankPCP,
may I know what’s the actual use-case?
please also see the footnote in r35.1 developer guide, Preparing the OTA Payload Package
The ability to only update Bootloader or only update the rootfs is not supported in this release.
Hi JerryChang,
The ability to only update Bootloader or only update the rootfs is not supported in this release.
I think this is for OTA from R32.7.2 to R35.1.0. I would like to implement OTA by myself and want to know how to reboot Xavier NX to recovery mode on R35.1.0. Is it possible to do that?
hello FrankPCP,
you may enable AB Redundancy, and using nvbootctrl to set the active SLOTs.
please see-also Topic 224162, which also show the commands to update the RootFS info variable.
I think his issue is another one. He does not want to use a second rootFS, instead he’d like to tell the system to use a certain image for an update on the existing rootFS from the recoveryFS.
hello FrankPCP,
usually, we have A/B partitions for binary updates. I don’t know the ways for Xavier NX load recovery.img and boot in recovery mode.
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