Dear Petr,
In message 1f085e1d-378c-5f29-2f35-988b8d110da8@elnico.cz you wrote:
I wonder whether it is possible to dynamically enable/disable a command. Since u-boot does not provide any secure authentication method, it is dangerous to keep some commands available to a potential hacker. E.g.
If some evil guy has access to the U-Boot command line interface you are pawned anyway.
the "fuse" command. On the other hand, I need these commands during the manufacturing process. So my idea is to enable/disable the commands dynamically based on some obscure logic. Is there a way to do it without need to deeply hack the code?
You have to modify the code to implement such a thing; but it should not require any "deep hacking". But then, I doubt it's useful. If you let an attacker run _any_ commands on your system you are already doomed. If it's in U-Boot, you lost.
Best regards,
Wolfgang Denk