I don’t see any reason to think the computer needs anything other than electrical power from a good 12 volt battery. It will reset itself and begin adapting to current conditions as the engine runs and the car is driven.
You’ll probably need a new battery. Jumping may not be enough.
If this were my car I’d first check the air filter housing for evidence of rodents. Clean if necessary.
Then I’d remove the spark plugs, squirt a small amount of motor oil into each cylinder, then turn the engine with the starter a few times to distribute the oil on the cylinder walls, then reconnect the spark plugs and try to start the engine.
The biggest potential problem I see is with the gasoline, which may have started to go bad, depending on how much is in the tank and whether or not it was treated with stabilizer prior to being parked.
I know, “What’s stabilizer?”
If you’ve already tried to start the engine, what, exactly, happened?