Jetson-TX2 - updating device-tree

thanks for your reply!
We tried running the nv_update_engine. It didn’t update the device tree. But my understanding is that the devicetree is not part of the BUP?

If it helps we get the following entry_table in the /opt/ota_package directory after running nv_update_engine:
root@jetson-tx2:~# cat /opt/ota_package/entry_table
[2020-06-30 13:05:58] bpmp-fw,1368,533904,2,1,1
[2020-06-30 13:05:58] sce-fw,535272,125568,2,1,1
[2020-06-30 13:05:58] cpu-bootloader,660840,284128,2,1,1
[2020-06-30 13:05:58] mb2,944968,116816,2,0,1
[2020-06-30 13:05:58] spe-fw,1061784,95984,2,0,1
[2020-06-30 13:05:58] secure-os,1157768,313152,2,1,1
[2020-06-30 13:05:58] mb1,1470920,99664,2,2,1
[2020-06-30 13:05:58] mts-bootpack,1570584,2082144,2,1,1
[2020-06-30 13:05:58] mts-preboot,3652728,63104,2,0,1
[2020-06-30 13:05:58] sc7,3715832,23632,2,1,1
[2020-06-30 13:05:58] kernel,3739464,483728,2,1,1

Ok, then I am not sure how it works. So will defer to @dwalkes or @madisox who have primarily been involved in the tegra integrations…

Parts of the BUP payload, like the DTB, are specific to a version of the TX2 module you have in your device. Only if a copy in the payload matches the version of your module will nv_update_engine install it.

The version information it uses for matching is in /etc/nv_boot_control.conf on the TNSPEC line. Can you post that here?

Thanks for your help!
Here is the requested output

[2020-06-30 13:57:57] root@jetson-tx2:~# cat /etc/nv_boot_control.conf
[2020-06-30 13:57:59] TNSPEC 3310-D00-1000-F.0-1-0-jetson-tx2-mmcblk0p1
[2020-06-30 13:57:59] TEGRA_CHIPID 0x18
[2020-06-30 13:57:59] TEGRA_OTA_BOOT_DEVICE /dev/mmcblk0boot0
[2020-06-30 13:57:59] TEGRA_OTA_GPT_DEVICE /dev/mmcblk0boot1

and for what it’s worth I get this when I grep for 3310 in the bl_update_payload (not sure if it’s relevant):

root@jetson-tx2:~# strings /opt/ota_package/bl_update_payload | grep 3310
3310-1000-B00-A

Yes, that’s the problem, then. If you’re using the zeus branch in meta-tegra (based on L4T R32.2.3), BUP payloads built only support a single board revision. The zeus-l4t-r32.3.1 branch builds multi-spec BUP payloads, and it should be including the necessary artifacts for the revision D00 FAB.

We are on the zeus-l4t-r32.3.1 branch, actually. Is there a specific (recent) commit that we need to be aware of?
Is is possible to misconfigure/misuse this feature somehow on our end?
Can I check something in my build to verify the generation of the payload works as expected?

Thanks!

I tried to dig a bit deeper. But to be honst I don’t quite understand how the different bup payloads are getting build and deployed. I see multiple payloads being deployed in the images directory (e.g. u-boot-dtb.bin.bl_only.bup-payload) but they all contain only the 3310-1000-B00-A string.

But the generated generate_bup_payload.sh file looks like this and does contain the paramenters specified in jeston-tx2.conf:

#!/bin/bash
rm -rf signed multi_signed rollback.bin payloads_t18x
export BOARDID=3310
export fuselevel=fuselevel_production
export localbootfile=boot.img
export CHIPREV=0
MACHINE=jetson-tx2 FAB=“B00” BOARDSKU="" BOARDREV="" ./tegra186-flash-helper.sh --bup ./flash.xml.in tegra186-quill-p3310-1000-c03-00-base.dtb jetson-tx2.cfg 0x7090000 “@" MACHINE=jetson-tx2 FAB="B02" BOARDSKU="" BOARDREV="" ./tegra186-flash-helper.sh --bup ./flash.xml.in tegra186-quill-p3310-1000-c03-00-base.dtb jetson-tx2.cfg 0x7090000 "@”
MACHINE=jetson-tx2 FAB=“C04” BOARDSKU="" BOARDREV="" ./tegra186-flash-helper.sh --bup ./flash.xml.in tegra186-quill-p3310-1000-c03-00-base.dtb jetson-tx2.cfg 0x7090000 “@" MACHINE=jetson-tx2 FAB="D00" BOARDSKU="" BOARDREV="" ./tegra186-flash-helper.sh --bup ./flash.xml.in tegra186-quill-p3310-1000-c03-00-base.dtb jetson-tx2.cfg 0x7090000 "@”
MACHINE=jetson-tx2 FAB=“D01” BOARDSKU="" BOARDREV="" ./tegra186-flash-helper.sh --bup ./flash.xml.in tegra186-quill-p3310-1000-c03-00-base.dtb jetson-tx2.cfg 0x7090000 “$@”

Should this build result in one BUP package that will work on all specified board revisions? Or do we need to explicitly set this information somewhere?

Should this build result in one BUP package that will work on all specified board revisions?

It should, yes, once it’s done. You can verify this with the BUP_generator.py script, which you can extract from the L4T BSP (in the Linux_for_Tegra/bootloader directory).

Example from one of my builds:

$ BUP_generator.py -c u-boot-dtb.bin.bup-payload 
BLOB PATH:
/build/madison/zeus-l4t-r32.3.1/build/tmp/deploy/images/jetson-tx2/u-boot-jetson-tx2.bin.bup-payload

BLOB HEADER:
       Magic: NVIDIA__BLOB__V2
     Version: 0x00020000
   Blob Size: 10,472,000 bytes
 Header Size: 48 bytes
 Entry Count: 36 partition(s)
        Type: 0 (0 for update, 1 for BMP)
Uncompressed
   Blob Size: 10,472,000 bytes
   Accessory: 0x0000000000000000

ENTRY TABLE:
|   part_name    |  offset  | part_size | version | op_mode |                  tnspec                 |
|        bpmp-fw |     4368 |    533904 |    2    |    0    |                                         |
|         sce-fw |   538272 |    125568 |    2    |    0    |                                         |
| cpu-bootloader |   663840 |    284128 |    2    |    0    |                                         |
|            mb2 |   947968 |    116816 |    2    |    0    |                                         |
|         spe-fw |  1064784 |     95984 |    2    |    0    |                                         |
|      secure-os |  1160768 |    243520 |    2    |    0    |                                         |
|            mb1 |  1404288 |     99664 |    2    |    2    |                                         |
|   mts-bootpack |  1503952 |   2082144 |    2    |    2    |                                         |
|    mts-preboot |  3586096 |     63104 |    2    |    2    |                                         |
|            sc7 |  3649200 |     23632 |    2    |    2    |                                         |
|    bpmp-fw-dtb |  3672832 |    466240 |    2    |    0    | 3310-B00-1000--1-0-jetson-tx2-mmcblk0p1 |
|    bpmp-fw-dtb |  4139072 |    466240 |    2    |    0    | 3310-B02-1000--1-0-jetson-tx2-mmcblk0p1 |
|    bpmp-fw-dtb |  4605312 |    466240 |    2    |    0    | 3310-C04-1000--1-0-jetson-tx2-mmcblk0p1 |
|    bpmp-fw-dtb |  5071552 |    466240 |    2    |    0    | 3310-D00-1000--1-0-jetson-tx2-mmcblk0p1 |
|    bpmp-fw-dtb |  5537792 |    466240 |    2    |    0    | 3310-D01-1000--1-0-jetson-tx2-mmcblk0p1 |
| bootloader-dtb |  6004032 |    371584 |    2    |    0    | 3310-B00-1000--1-0-jetson-tx2-mmcblk0p1 |
| bootloader-dtb |  6375616 |    371584 |    2    |    0    | 3310-B02-1000--1-0-jetson-tx2-mmcblk0p1 |
| bootloader-dtb |  6747200 |    371584 |    2    |    0    | 3310-C04-1000--1-0-jetson-tx2-mmcblk0p1 |
| bootloader-dtb |  7118784 |    371584 |    2    |    0    | 3310-D00-1000--1-0-jetson-tx2-mmcblk0p1 |
| bootloader-dtb |  7490368 |    371584 |    2    |    0    | 3310-D01-1000--1-0-jetson-tx2-mmcblk0p1 |
|            BCT |  7861952 |      3584 |    2    |    2    | 3310-B00-1000--1-0-jetson-tx2-mmcblk0p1 |
|            BCT |  7865536 |      3584 |    2    |    2    | 3310-B02-1000--1-0-jetson-tx2-mmcblk0p1 |
|            BCT |  7869120 |      3584 |    2    |    2    | 3310-C04-1000--1-0-jetson-tx2-mmcblk0p1 |
|            BCT |  7872704 |      3584 |    2    |    2    | 3310-D00-1000--1-0-jetson-tx2-mmcblk0p1 |
|            BCT |  7876288 |      3584 |    2    |    2    | 3310-D01-1000--1-0-jetson-tx2-mmcblk0p1 |
|        MB1_BCT |  7879872 |     50096 |    2    |    0    | 3310-B00-1000--1-0-jetson-tx2-mmcblk0p1 |
|        MB1_BCT |  7929968 |     50096 |    2    |    0    | 3310-B02-1000--1-0-jetson-tx2-mmcblk0p1 |
|        MB1_BCT |  7980064 |     50096 |    2    |    0    | 3310-C04-1000--1-0-jetson-tx2-mmcblk0p1 |
|        MB1_BCT |  8030160 |     50096 |    2    |    0    | 3310-D00-1000--1-0-jetson-tx2-mmcblk0p1 |
|        MB1_BCT |  8080256 |     50096 |    2    |    0    | 3310-D01-1000--1-0-jetson-tx2-mmcblk0p1 |
|         kernel |  8130352 |    483728 |    2    |    0    |                                         |
|     kernel-dtb |  8614080 |    371584 |    2    |    0    | 3310-B00-1000--1-0-jetson-tx2-mmcblk0p1 |
|     kernel-dtb |  8985664 |    371584 |    2    |    0    | 3310-B02-1000--1-0-jetson-tx2-mmcblk0p1 |
|     kernel-dtb |  9357248 |    371584 |    2    |    0    | 3310-C04-1000--1-0-jetson-tx2-mmcblk0p1 |
|     kernel-dtb |  9728832 |    371584 |    2    |    0    | 3310-D00-1000--1-0-jetson-tx2-mmcblk0p1 |
|     kernel-dtb | 10100416 |    371584 |    2    |    0    | 3310-D01-1000--1-0-jetson-tx2-mmcblk0p1 |

Hi @madisox,

I have the feeling I am missing something very basic in my configuration.
This is the output for the same file on my build. There are no devicetrees included:

> naro@naro:~/drive_yocto/yocto_43/build/tmp/deploy/images/jetson-tx2$ ./BUP_generator.py -c u-boot-jetson-tx2.bin.bup-payload
> BLOB PATH:
> /home/naro/drive_yocto/yocto_43/build/tmp/deploy/images/jetson-tx2/u-boot-jetson-tx2.bin.bup-payload
> 
> BLOB HEADER:
>        Magic: NVIDIA__BLOB__V2
>      Version: 0x00020000
>    Blob Size: 4,223,192 bytes
>  Header Size: 48 bytes
>  Entry Count: 11 partition(s)
>         Type: 0 (0 for update, 1 for BMP)
> Uncompressed
>    Blob Size: 4,223,192 bytes
>    Accessory: 0x0000000000000000
> 
> ENTRY TABLE:
> |   part_name    |  offset | part_size | version | op_mode | tnspec |
> |        bpmp-fw |    1368 |    533904 |    2    |    0    |        |
> |         sce-fw |  535272 |    125568 |    2    |    0    |        |
> | cpu-bootloader |  660840 |    284128 |    2    |    0    |        |
> |            mb2 |  944968 |    116816 |    2    |    0    |        |
> |         spe-fw | 1061784 |     95984 |    2    |    0    |        |
> |      secure-os | 1157768 |    313152 |    2    |    0    |        |
> |            mb1 | 1470920 |     99664 |    2    |    2    |        |
> |   mts-bootpack | 1570584 |   2082144 |    2    |    2    |        |
> |    mts-preboot | 3652728 |     63104 |    2    |    2    |        |
> |            sc7 | 3715832 |     23632 |    2    |    2    |        |
> |         kernel | 3739464 |    483728 |    2    |    0    |        |

Yes, that’s definitely incomplete. Check the log file for the u-boot-bup-payload do_deploy task, which should be at $BUILDDIR/tmp/work/jetson_tx2-poky-linux/u-boot-bup-payload/1.0/temp/log.do_deploy (or something similar, depending on your distro configuration). I have seen cases where the BUP generator script encounters (and logs) errors but doesn’t fail out the execution of the task. That could be happening here.

Ok, some of the sections look suspicious. It seems the script can’t find relevant files. Do I interpret that correctly? Is there a dependency missing?

[   7.0670 ] Copying signed file in /home/naro/drive_yocto/yocto_43/build/tmp/work/jetson_tx2-poky-linux/u-boot-bup-payload/1.0-r0/bup-payload/signed
[  13.0453 ] tegraparser_v2 --pt flash.xml.bin --generateflashindex /home/naro/drive_yocto/yocto_43/build/tmp/work/jetson_tx2-poky-linux/u-boot-bup-payload/1.0-r0/bup-payload/signed/flash.xm
l.tmp flash.idx
[  13.0504 ] File u-boot-bup-payload-jetson-tx2.dataimg open failed
[  13.1515 ]
Error: Return value 19
Command tegraparser_v2 --pt flash.xml.bin --generateflashindex /home/naro/drive_yocto/yocto_43/build/tmp/work/jetson_tx2-poky-linux/u-boot-bup-payload/1.0-r0/bup-payload/signed/flash.xml.tmp
 flash.idx

signing images failed


Creating update payloads for Jetson-3310-D00-1000--1-0-jetson-tx2-mmcblk0p1 board ...
ls: cannot access 'multi_signed/*/tegra186*bpmp*_sigheader.dtb.encrypt': No such file or directory
WARNING: Failed to find image for bpmp-fw-dtb
ls: cannot access 'multi_signed/*/tegra186-quill*_sigheader.dtb.encrypt': No such file or directory
WARNING: Failed to find image for bootloader-dtb
ls: cannot access 'multi_signed/*/tegra186-quill*_sigheader.dtb.encrypt': No such file or directory
WARNING: Failed to find image for kernel-dtb
ls: cannot access 'multi_signed/*/br_bct*.bct': No such file or directory
WARNING: Failed to find image for BCT
ls: cannot access 'multi_signed/*/mb1_cold_boot*.bct.encrypt': No such file or directory
WARNING: Failed to find image for MB1_BCT
creating bl_and_kernel payload

Thanks a lot for your help on this! I really appreciate it!

Yep, that’s the problem. I think this is due to some recent commits in meta-tegra that need some corresponding changes in the meta-mender-community/meta-mender-tegra layer.

I have some changes on a branch in my fork of that repository that should fix this. In particular, this commit.

1 Like

Awesome! Your patches fixed it for me, the payload contains the devicetrees now!
Many thanks again for your quick help with this issue!

@mirzak, do you have a timeframe when those patches will make it into mender?

I thought @dwalkes had already picked up those patches to upstream to meta-mender-community… I’ll work with him to get them there.

I can confirm that these patches enabled me to update the dtb using nv_update_engine.

Thank you @madisox and @naro

There was a big update merged from @dwalkes (link) but I can not see that the mentioned change-set was part of that PR.

@madisox looks like it didn’t make it into https://github.com/mendersoftware/meta-mender-community/pull/147/commits. I just opened a PR here with the changes that didn’t make it in.

Thanks, @dwalkes!

Was it intentionally targeting your own fork of meta-mender-community?