JTAG flashing at linux

Hi, list,
I currently investigate if it's possible to reprogram the PLD on our
card via JTAG using open software tools. Currently we use the xilinx
proprietary utility.
After some googling around I have suprisingly come up with almost
nothing. There is a jtag project (which is dormant for about three years
and thus doesn't support the flash chip on our card) and that's about
it. This just doesn't make any sense -- the flashing process is IEEE
standartized and the chips are wide-spread (Xilinx XCF family). I don't
think it's possible that noone tried to flash them before me.
--

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