This excerpt taken from the MRVL 8-K filed Jul 2, 2007.
Cost of Sales
Cost of sales represents all fixed and variable costs associated with manufacturing, assembling, and testing products, including subcontract manufacturing, direct and indirect labor and materials, manufacturing and other indirect allocations, and excess and obsolete inventory charges. Manufacturing process start-up costs are classified as cost of sales once manufacturing process validation is achieved. Cost of sales also includes costs associated with engineering support, excess manufacturing capacity, indirect materials, royalties, and other fixed manufacturing overhead.