SPRACY6 July 2021 DRA821U , DRA821U-Q1 , DRA829J , DRA829V , DRA829V-Q1 , TDA4VM , TDA4VM-Q1
SYSFW executes on the Security Manager and Device Manager Core. On J7 devices, the DMSC subsystem is the Security Manager Core (Arm® Cortex®-M3) in the SoC. The Device Manager (DM) core however can be on the DMSC itself or the MCU R5F. The choice of whether this runs on the DMSC or the MCU R5F is based on the kind of applications the device is targeting.
For devices that do not need a dedicated security island or HSM, the device manager runs on the DMSC. If the device is targeting applications, where there is a need for a dedicated HSM, the Device manager core is independent of the DMSC (which is exclusively kept for Security functions).
Category | Device | TIFS Core | Dedicated Security Island or HSM? | 3rd Party HSM/SHE Stack Core | RM/PM (DM) core |
---|---|---|---|---|---|
1 | DRA829/TDA4VM | DMSC (M3) | NO | NA | DMSC (M3) |
2 | DRA829/TDA4VM | DMSC (M3) | YES | DMSC (Cortex-M3) | Library on MCU R5F |
The intention of this application report is to cater to the second category mentioned above.