After weeks of silence, Linuxer on Lemote forum finally made a little progress again. "Jiao Lin Tan Suo" said earlier today that he has been porting FPC to Linux-Loongson platform for some time. He has implemented the cross-compiler as the first step, and then used non-cross-compiler running on Loongson to implement a HelloWorld.pas successfully. The compiler itself is written in Pascal, completely independent of gcc.
It is just the beginning.