It's a raw data aicraft with CAT 1 capability it's not an emergency although automation has gone. There is a reset in the QRH and some aircrafts are equipped with back up nav which could help. Still you would have to descend to non RVSM flight level until at least one FMGC is recovered. There is a long reset in the QRH which takes 15 minutes
If you were doing a RNAV SID ask radar vectoring or a direct to VOR , reduce your speed , climb above MSA , notify ATC "unable RNAV , Unable RVSM".
Then you would have to check your fuel status , whether it can bring you to destination , provided that weather is good enough.
Do not interrupt your flight , holding somewhere might bring your fuel status below minimum fuel to continue and even if both FMGC are recovered you would be unable to reach your destination because you burnt fuel during hold. And now you have to tell your company that you came back because you were short of fuel!
Consider calling your company , MCC via stockholm radio or ACARs , SATCOm if fitted , maybe they want you to come back to departure airport instead of grounding aircraft at destination? This is a sharing decision.
But in my opinion there is no rush, it's not a LAND ASAP , you would still have plenty of fuel at that stage, gather information as much as you can regarding weather , maintenance availability, make up your mind wisely.
It will depend on so many factors , are you departing from home base ? How is the weather at departure , destination etc.. ? Maybe the company will ask you to divert enroute wehere they can fix the aircraft.