I think OpenCores is wrong. According to Richard Stallman, "the LGPL really is specifically for programs". That statment was given on the freepats list (can't point to the archives because there is a problem with the server in this moment, sorry). The terms of the LGPL are very hard to translate and apply to other works.
The GPL can be used, but if used for works other than programs, the copyright holder should attach a note clarifying the meaning of source code, linking, and other terms mentioned in the GPL so they are not ambiguous when applied to that particular work.
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I think OpenCores is wrong. According to Richard Stallman, "the LGPL really is specifically for programs". That statment was given on the freepats list (can't point to the archives because there is a problem with the server in this moment, sorry). The terms of the LGPL are very hard to translate and apply to other works.
The GPL can be used, but if used for works other than programs, the copyright holder should attach a note clarifying the meaning of source code, linking, and other terms mentioned in the GPL so they are not ambiguous when applied to that particular work.