How to make Artix 7 boot from flash memory when power is cycled

[alexanderbosch]

Hi,

I am programming a Artix-7 FPGA (xc7a15tftg256-1). I have been trying to upload the program onto the external configuration flash memory. However, after successfully uploading the .bin file to the flash memory, I will cut power to the FPGA and then turn it back on and it will not run the program I just uploaded. It runs something else. When I manually click boot from configuration memory in Vivado, it does work though. How do I configure the FPGA so that it will always boot from configuration memory when the power is cycled?

Thanks!

[sgeorgi_sen · Accepted solution]

Hi Alexander,

the boot method is decided by the Mode Pins M0 M1 and M2.

Please refer to the UG470 "7 Series FPGAs Configuration User Guide".

Have fun,
Sebastian

[jmcclusk]

You should check the mode pins  ( M2, M1, M0 ) to see how they are set.   These control the boot mode when power is cycled.