This section guides you in adapting MinSoC to synthesize it with your FPGA's vendor tool. In the linked pages of the text, some files are said to be located under various directories. You have to edit the files under minsoc/backend instead. The only exception is or1200_defines.v, but you can as well ignore the configuration of this file.
Only after the bitfile has been successfully uploaded, OpenRISC firmware can be uploaded and debugged, how to.