Thanks for the response. I attached my C code and the sopcinfo file to the original post. I didn't find a way to make the pictures larger.
I looked through the sopcinfo file and it confirms the same base address for the uart (0x2000), which is what I've defined in my code. I'm also using the switches and LEDs on my board through memory mapped PIOs and these seem to work (I can set the LEDs and read from the switches using code running on the NIOS). I did not do any sort of auto generation of a BSP project. Not sure how to do that or whether I would need to for such a simple test.