Hi, sorry for my english.
Suppose I want to implement my own firmware for BBB (particularly), 
specifically - UEFI. (In fact, I am working on it, but by now I am to far 
from the hardware part yet.) And also I want at least to try to implement 
my own Secure world software stack (It's not necessarily should relate to 
UEFI, but might be realated to it as well, for example for the Secure Boot 
stuff, UEFI by itself even clearly states it should run in the privileged 
non-secure state on aarch32). Especially - the Monitor software. AM3358 
having cortex-a8 inside it has the Security Extension inside, so the 
problem lays only in availability of TrustZone hardware components for 
programming them for third parties. The TI's TRM on Sitara am3358 states 
the ROM code starts in the secure state and then switches into non-secure 
state before transferring control to its payload, thus to my possible FW. 
The question is, whether third parties like me are able to get into the 
chain of trust in order to supply their own Secure world firmware/OS and 
especially - the Monitor code? Does TI give such a possibility? And if so, 
what should be done from my side? Maybe somebody knows this.
Thanks!

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