Can I use L1D as SRAM on 6678?

Hi,all:

I see the datasheet that 6678 has 32kb L1D 32kb L1P and L2 512KB .

512kb L2 can be used as sram or cache.How about L1D? Can I use L1D as sram?

I can do that on DM6437,But I am not sure it's ok for 6678  who can tell me ?

Thanks!