Idle curiosity about iLOM

Why does the service processor on our brand new Sun T5240 server have a SPARC 885 processor, and run Linux? Why not (Open)Solaris?

Kinda ironic that Sun boots its latest servers with Linux.

Maybe it's the fact that it has 32MB of flash to work with, and only 128MB of ram. But that should be enough to run Solaris.