Capsule Update Failure on Secure Boot Enabled Jetson Orin Nano

Issue Overview

Users are experiencing issues when attempting to generate and apply firmware updates via capsule on a Secure Boot enabled Jetson Orin Nano. The symptoms include a failure to successfully complete the update process, leading to a boot failure. Specifically, users report that after creating a capsule and rebooting the device, the update operation does not succeed, suggesting that the capsule is being rejected by the UEFI firmware.

The context of the problem arises during the update process using the script l4t_generate_soc_capsule.sh, which requires specific certificate files for signing. Users have noted that while the documentation mentions three types of certificates (signer private certificate, public certificate, and trusted public certificate), it lacks clarity on which specific keys or certificates should be used for devices with Secure Boot enabled.

Hardware specifications include:

  • Jetson Orin Nano Dev Kit
  • UEFI Secure Boot enabled
  • Various fused keys such as PKC, SBK, and others as specified in XML configurations.

The issue appears to be consistently reproducible among users who have followed the documented procedures for capsule generation and update application.

Possible Causes

  1. Hardware Incompatibilities or Defects: Inadequate or incorrect fuse settings may lead to capsule rejection.
  2. Software Bugs or Conflicts: Potential bugs in the UEFI firmware or the scripts used for capsule generation could cause failures.
  3. Configuration Errors: Incorrect configurations in the signing process or missing parameters in the script may result in invalid capsules.
  4. Driver Issues: Outdated or incompatible drivers might interfere with the update process.
  5. Environmental Factors: Power supply issues or temperature extremes could affect device performance during updates.
  6. User Errors or Misconfigurations: Incorrectly specified paths or parameters when generating capsules could lead to failures.

Troubleshooting Steps, Solutions & Fixes

  1. Verify Fuse Settings:

    • Confirm that all required fuses are correctly set using the XML configuration provided.
    • Example fuse settings include:
      <fuse name="PublicKeyHash" size="64" value="0x..."/>
      <fuse name="SecureBootKey" size="32" value="0x..."/>
      
  2. Check Certificate Files:

    • Ensure that you are using the correct certificates for your Secure Boot setup. The default test keys may not be appropriate.
    • Recommended command for generating capsules:
      sudo ./l4t_generate_soc_bup.sh -u PKC.key -v SBK.key -e t23x_3767_bl_spec t23x
      ./generate_capsule/l4t_generate_soc_capsule.sh -i bootloader/payloads_t23x/bl_only_payload -o ./TEGRA_BL.Cap t234
      
  3. Review Documentation:

    • Refer to NVIDIA’s official documentation for detailed instructions on Secure Boot configurations and capsule generation.
  4. Test Different Configurations:

    • Attempt to use different combinations of certificate files to see if any successfully pass UEFI checks.
    • Example command to mount and prepare for update:
      sudo mount /dev/nvme0n1p11 /mnt/
      cd /mnt/EFI
      sudo su
      mkdir UpdateCapsule
      cp /home/nvidia/TEGRA_BL.Cap ./UpdateCapsule/
      
  5. Monitor Boot Logs:

    • Use serial console logs to capture boot messages that may indicate where the failure occurs.
    • Commands like nvbootctrl dump-slots-info can help verify boot slot statuses.
  6. Use Correct SDK Versions:

    • Ensure you are using compatible versions of Jetpack and SDK Manager as issues have been reported with certain versions leading to instability.
  7. Seek Community Support:

    • If issues persist, consider posting detailed logs and steps taken on NVIDIA forums for community support.
  8. Reflash Device if Necessary:

    • As a last resort, reflashing the device with a stable version of Jetpack may resolve underlying issues.

By following these troubleshooting steps, users can systematically identify and resolve issues related to capsule updates on their Secure Boot enabled Jetson Orin Nano devices.

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