The Bayern Munich centre-back has been a fitness concern for head coach Joachim Low after he sustained a calf injury in their final group-stage match, a 1-0 win over Northern Ireland.
Boateng did work on the exercise bike away from the rest of the squad on Friday, but took part with his team-mates a day later under close supervision from team doctor Hans-Wilhelm Muller-Wohlfahrt.
It remains to be seen if Boateng will feature against Slovakia, who beat Germany 3-1 in a friendly in Hannover last month, but is seemingly in contention for Low’s men in Lille.
The reward for the winner is a quarter-final clash with either Italy or Spain on Saturday in Bordeaux.
