AM2631: Is there an example to enable lockstep

It seems like it is as simple as:

• Loading both CPU1 and CPU2 cores with the same CPU1-project out-file
• Setting MSS_R5SS0_CONTROL.Lock_Step to 1?

I tried this, and MSS_R5SS0_STATUS_REG.Lock_Step still read 0.

Is there something else I am missing?

Thanks,

Jim