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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