[U-Boot] secure embedded linux system

[Simon Glass]

Hi Wolfgang,

On 3 June 2014 10:07, Wolfgang Denk <wd at denx.de> wrote:
> Dear Simon,
>
> In message <CAPnjgZ2g_7Nu8rBWn3D=xQ7qMaWowJmOUkd1PyCahKoPz99GNQ at mail.gmail.com> you wrote:
>>
>> > AFAICT there is no HS version of the AM335X processor.
>>
>> I just sent out a new series (available in u-boot-x86.git branch
>> 'bone') which adds some step-by-step documentation for the Beaglebone
>> Black. It also collects all the fixes in one place.
>
> Please correct me if I'm wrong - but while this can protect against
> software attacks, it cannot protect your system when someone has
> physical access, say with a JTAG debugger, correct?

That's correct - they could in that case just change the software in
memory after it has loaded, perhaps involving some timing skill.

Regards,
Simon