Re: [PATCH 0/1] arm: imx: fsl_otp: make fuses (OTP memory) read-only

[Alexander Holler <holler@ahsoftware.de>]

Am 08.11.2014 22:54, schrieb Robin Findley:
>  From Alexander Holler
>> But there is absolutely no reason to include this ONE TIME FUNCTIONALITY
>> into any kernel meant for the public, especially as it is very
>> dangerous.
>
> The problem isn't that someone can burn fuses in a commercial product.
> Rather, the problem is a designer who ships a product with unburned fuses.  If
> a designer is unaware of the fuses, and ships them unburned (unless he has
> good reason), then he shouldn't be selling commercial products.  You can't
> design an imx product without knowing about the fuses.  They are fundamental
> to the design process.

You're only talking about locked products which are including the SW, do 
you?

What's if the software isn't part of you manufacturing process and you 
want to leave the customer the choice to enter secure mode whenever he wish?

Setting and locking fuses means removing options and crippling the HW. 
That's their only purpose.

Alexander Holler