Now I am hitting this:
Open On-Chip Debugger 0.10.0+dev-00152-gdf7ba7d-dirty (2018-04-03-14:58)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
adapter speed: 3000 kHz
Info : auto-selecting first available session transport “jtag”. To override use 'transport select '.
Info : clock speed 3000 kHz
Info : JTAG tap: riscv.cpu tap/device found: 0x20000913 (mfg: 0x489 (SiFive, Inc.), part: 0x0000, ver: 0x2)
Error: unable to halt hart 0
Error: dmcontrol=0x80000001
Error: dmstatus =0x00030c82
The chain can be recognized, but the debugger is not able to halt the core. Any idea how to proceed here?? Thanks.