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I’ll address your questions regarding the chipsku value for Jetson Orin NX and Orin Nano modules.
- Is the
chipsku parameter in jetsonboardspec.cfg a fixed unique value for each variant?
The chipsku value is a unique identifier for each module variant, including Orin NX and Orin Nano modules. According to the provided documentation, the chipsku values for Orin NX and Orin Nano modules are:
- Orin NX 16GB:
0000
- Orin NX 8GB:
0001
- Orin Nano 8GB:
0003 and 0005
- Orin Nano 4GB:
0004
These values are specific to each module variant and are used to identify the correct TEGRABLCap file during bootloader updates.
However, it’s essential to note that the chipsku value can potentially change due to a Product Change Notice (PCN). A PCN is a notification sent by the manufacturer (in this case, NVIDIA) to inform customers of changes to a product’s design, manufacturing process, or other relevant details. If a PCN is issued for a specific module variant, the chipsku value might be updated to reflect the changes.
- Is there a way to retrieve the
chipsku value from a running Orin NX or Orin Nano system?
Unfortunately, the provided documentation does not explicitly mention a method to retrieve the chipsku value from a running Orin NX or Orin Nano system. However, you can try the following approaches:
- Check the
jetsonboardspec.cfg file: If you have access to the file system of the running device, you can check the jetsonboardspec.cfg file to see if it contains the chipsku value.
- Use the
nvbootctrl command: The nvbootctrl command is used to control and configure the bootloader on NVIDIA Jetson devices. You can try running the nvbootctrl command with the --get-chipsku option to see if it returns the chipsku value.
- Check the device tree: The device tree is a data structure that describes the hardware components of a system. You can try checking the device tree to see if it contains information about the
chipsku value.
Keep in mind that these approaches might not work, and the chipsku value might not be accessible from a running system. If you need to verify the chipsku value during bootloader updates, it’s recommended to use a more robust method, such as storing the chipsku value in a secure location or using a secure boot mechanism.
To prevent applying incorrect TEGRABLCap files, you can implement a verification mechanism that checks the chipsku value before performing bootloader updates. This can be done by:
- Storing the
chipsku value in a secure location, such as a secure storage device or a trusted platform module (TPM).
- Using a secure boot mechanism that verifies the
chipsku value before loading the bootloader.
- Implementing a verification algorithm that checks the
chipsku value against a known good value before applying the TEGRABLCap file.
By implementing one of these methods, you can ensure that the correct TEGRABLCap file is applied to the device, preventing issues like the one you encountered.
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