93 Cr125 Help With Brakes

I have a CR125 that has been sitting in my dads garage for a long time so I asked him about it and he said fix you can have it. I finally got it running and I notice the front wheel wouldn't spin so I decicded to change the brakes anyway and see if pushing the Pistons down would loosen it up. When I put the new brakes on and pulled the brake in it was loose like it should be and as I pumped them the just got tighter and tighter so I went and tried to spin the front wheel and it was frozen. The wheel was free when I had the brake caliper off, any ideas.
Thanks