Building Coreboot Image for Opencellular

Hello,

I'm Karthik working on Opencellular (https://code.fb.com/connectivity/introducing-opencellular-an-open-source-wir...). I'm trying to build coreboot image for Opencellular Board. Finally, succeeded in building the image but with a WARNING message

** WARNING **
coreboot will be built without an Intel Firmware Descriptor.
Never write a complete coreboot.rom without an IFD to your
board's flash chip! You can use flashrom's IFD or layout
parameters to flash only to the BIOS region.

So my question is
1. Is it okay to flash the image with above WARNING message onto the board?

Help me to find a way.

Thank you, in advance.