[U-Boot] How to debug u-boot with GDB & BDI3000

Thanks for your time.

I 'm just working on a u-boot on the board with CN5010, but it looks like there are some problems with GDB and BDI3000. I have built the debug environment covering GDB & BDI3000 & my board, but later I sadly found that the breakpoint doesn't work.

Could you give me some suggestions?

Thanks! Shuyou