CCS/TMS320F28379D: Can CPU2 run code without CPU1 executing code?

From TRM: "On this device, the CPU1 subsystem acts as a master, and by default (upon reset), it owns all the
configuration and control. Through software running on CPU1, peripherals and I/Os can be configured to
be accessible by the CPU2 subsystem and the configuration so chosen could be locked."

So, it looks like you need to have at least some minimal code running on CPU1 in order to run CPU2.

Hopefully, that helps.