How to troubleshoot OpenWrt firmware compilation that fails to start?
If the compiled OpenWrt firmware fails to boot, here are some possible solutions:
- Check the compilation settings: Make sure your compilation settings are correct. You can use the “menuconfig” command to check and modify the settings. Ensure you have selected the correct hardware platform and device model, and have enabled the appropriate drivers and functionalities.
- Check the startup log: If you can enter the system’s debug mode or serial port terminal, check the startup log to understand the cause of the problem. The startup log typically displays error messages and warnings during the boot process. You can connect a serial cable to the device’s debug port and use a serial terminal tool (such as minicom or putty) to view the log.
- Check the device tree file: During the compilation process of OpenWrt, the device tree file (.dts) is used to describe the configuration and functionality of hardware devices. Check the device tree file to ensure it accurately describes your hardware device. You can find the device tree file in the target/linux directory.
- Check kernel configuration: OpenWrt uses the Linux kernel, you can use the command “make kernel_menuconfig” to check and modify the kernel configuration. Make sure the appropriate drivers and features are enabled.
- Check the file system: If you are using a custom file system image, make sure the file system is configured properly. During the compilation process, OpenWrt will generate a root file system, which can be found in the bin directory under the compilation output directory.
- Reset device: Attempt to restore the device to its factory settings. Some devices may have a reset button or can be reset through a specific boot mode.
- Refer to community support: search for similar issues on the official OpenWrt forums or related developer communities to see if other users have encountered the same problem and found a solution.
If none of the above methods are able to solve the problem, you may need to consult more detailed error logs or communicate with developers from the OpenWrt community for further assistance.
