Cortex-M33 and Arm TrustZone ?

[Tabulous]

Hi
is this something that is on the grape vine so to speak ?

[Giovanni]

I have definite plans for this, just waiting for the L5 to become available.

The general idea is to make a port to run RT/NIL in TZ as trusted OS on top of another OS running in non trusted mode (another RT/NIL or something else entirely).

Giovanni

[Tabulous]

So between the two OS's running you have some kind of API ?

From the reading ive done its sounds like there will be a significant amount of complexity added

[Giovanni]

Yes, the trusted OS would expose "services" to the non-trusted code.

The API will be very simple, just communication, each service would define its own API. Look at services as threads in TZ exposing something like a mailbox.

Giovanni

[Tabulous]

When do you anticipate adding this be ?
Do you think within the next 6 months ?

NUCLEO-L552ZE-Q is already available

[Giovanni]

It is pretty high priority, I will order the board ASAP. First we will have the normal RT/NIL/HAL support, TZ support will follow.

We also need OpenOCD support, I hope it will be available soon.

Giovanni