Rahul,
The mechanism you described is well known, but the IPC interrupt mechanism is supported by the 6678 not only for the Bootloader mechanism but for generel IPC mechanism too, and this IPC interrupts can't be used without unloncking the Bootcfg region.
So the question is why to tie the IPC interrupts registers to the Bootcfg region? The Bootloader mechanishm of wake up cores 1-7 is still available event if the IPC interrupts regiters are not part of the Bootcfg region?
Regards,