BSDL files can be generated using the Diamond Deployment tool:
Step 1: Open Deployment Tool
Step 2: Select "Create New Deployment" > Select "File Conversion" > =Select "Application Specific BSDL File"
Step 3: Upload JEDEC file and Select Desired Device.
for more information please go to: User Guides > Programming the FPGA > Deploying the Design with the Deployment Tool > Deployment Function Types > File Conversion Deployment Function Type