Customize esp32c6-bootloader for rust-based bare-metal firmware

[frabervo]

Hello,

I want to implement a secure update process for a Rust-based firmware. To do this, I want to play with the second-stage bootloader.

Is it possible to find out how the esp32c6's bootloader in the repository-ressources was built in order to reproduce it and perhaps adapt it to my needs?

Thanks for you responses.

[MabezDev]

The bootloader currently comes from esp-idf: https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-guides/bootloader.html. You'll need to clone and build the bootloader (see https://github.com/espressif/esp-idf/tree/master/components/bootloader). Once you've customized it, you can use your custom bootloader by using the --bootloader flag with espflash.