Michal Demin posted a tutorial for the OpenOCD JTAG debugging support he added to the Bus Pirate.
Some time ago, I have added support to OpenOCD to be able to use Buspirate as JTAG interface. This how-to will show you, how to setup all the things necessary.
Things you will need:
– Buspirate
– Computer with OpenOCD installed
– target with JTAG
– luck :)