I know that the EF6 VS Tools for Visual Studio 2012 come with a T4 template to generate DbContext classes which work with EF6.
But I want to have a generator which uses
http://visualstudiogallery.msdn.microsoft.com/72a60b14-1581-4b9b-89f2-846072eff19d
If you have a database you can use reverse code first it will generate all your fluent api mapping.