How would I go about having 2 different bitstreams in an EPCQ flash device and choose which to load into a Cyclone V FPGA with a jumper/switch?

Hi Vojtech,

For EPCQ flash device, the configuration schema that you are going to use is Active Serial (AS). For AS, we can use serial flash loader IP to interact with Flash Memory (EPCQ) for new bitstream programming during user mode and etc. You may find more about Serial Flash Loader IP at link below:

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/an/an370.pdf

However, if you want to achieve reconfiguration with a jumper or switches and having 2 different bitstream stored in a Flash Memory, it cannot be done with serial flash loader. Instead, you need to use fast passive parallel configuration scheme for that. To do that, you will need to use Parallel Flash Loader IP. You may find more about Parallel Flash Loader IP at link below:

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug_pfl.pdf

Thank You.

Regards,

YL