Thanks for contacting us, rammohankn! Actually I have no answer about it now. The Intel® Quark SoC X1000 Series launched on Q4'13 and the base code is not released now. Or you could send your feedback to the following URL. CONTACT Good luck!
There is a helpful document provided to you. You can find the information about Modifying bootloader on the SourceDebugUsingOpenOCD_Quark_AppNote_330015_001 PDF file in attachment. You can find the mentioned information on Section 3.5, page 11.
And I really hope it could help you.