We already have a BDI2000 which has issues programming the flash using the workspace, so it reverts to the slow pure JTAG mode. I still have to
That means you have not set up your board config file correctly.
Instead of wasting your time on a two-level bootloader approach, fix the config file instead.
That's what I've been trying to do for the past 6 months ! Nobody have been able to help me, not even the Abatron distributor. I'm still trying to solve the issue, which involves sending hardware samples, NDAs, ... If I had known it would take so long for the support people to even work on my issue I would have gone for a two-level bootloader approach (or anything else that just works) right away.
Even using the internal workspace, the BDI2000 is not a very practical solution, as it wouldn't be easy to integrate it in our test bench
The BDI2000 is perfectly scriptable with expect, so what are you missing?
The ability to make it fit in the bed of nails. It would involve designing a new mechanical test bed. We obviously can't integrate the BDI in the test bed PCB.
Laurent Pinchart