My 'sleepy' memory gives me this...
First selection of the TOGA switch results in a rate of climb between 1000 and 2000 fpm, at the current flap setting, at the max allowable weight for that setting. (there is no reference to the actual weight of the airplane).
The second selection of TOGA (after the first selection result has stabilized), will result in full N1 power.
Now I'll go back to sleep...
EW73