NIOSII IDE My boot.c in on-chip memory

When we used NIOS I and SDK, when I generate processor, I used legacy on-chip memory with my boot.c. Now we work on NIOSII and IDE, and I don't use legacy on-chip memory but on-chip memory, and I can't include to on-chip memory my boot.c during generate processor. How I can do it?

Thank you for all informations

Leszek