Can you please let me know if you are using a custom board or a Cypress Kit?
If you are using a Cypress Kit, you can select the appropriate BSP in the project creator tool. Refer to Choose BSP Page in ModusToolbox Project Creator Guide for information regarding this.
If you are using a custom board, you have to create a Custom BSP. Please refer to Section 5.3.9, Creating a BSP for Your Board in ModusToolbox User Guide.
Hope this helps.
Thanks and Regards,
Rakshith M B