The nIO_PULLUP pin sets the state of user I/O pins (including Dual-Purpose pins) after power-up, before configuration begins, and during configuration, but Stratix V devices do not use this feature. can not.

Connect the pin processing to GND.

For details, please refer to the URL link below.
  https://www.altera.co.jp/support/support-resources/knowledge-base/solutions/rd08122013_422.html