Hello,
I am currently working on a custom board based on the STM32MP1. In my research, I found that flashing firmware over JTAG is not supported for the STM32MP1 series. Instead, we need to rely on USB or UART for flashing purposes.
I came across this related issue on the forum: Flashing STM32MP1 Custom Board Over JTAG.
Given this, I am concerned about the security implications of using USB for flashing firmware. Specifically:
- What security measures can be implemented to prevent unauthorized access or flashing through USB?
- Is it possible to enforce authentication during the USB boot and firmware flashing process?
- Are there recommended techniques to encrypt the firmware or restrict access to certain boot modes?
And if I use the UART for flashing, then how can I do that? Which combination of boot mode selection switch should I use? Is there any specific documentation for flashing firmware using UART?
I would greatly appreciate any guidance or best practices to enhance security when using USB as the flashing method.
Thank you in advance!
