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openhwgroup / cva6-sdk

CVA6 SDK containing RISC-V tools and Buildroot
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Debug with OpenOCD #36

Open DeltaEnvy opened 4 years ago

DeltaEnvy commented 4 years ago

Hi. I have some questions about debug. 1:As you said, I go to this page "https://github.com/riscv/riscv-openocd", and installed the OpenOCD , but it doesn't said how to use it to gdb , could you tell me how to use it? 2:OpenOCD need configuration file for debug, but there isn't have the OpenOCD configuration file for digilent genesys 2 ,how can i get the corresponding configuration file.

Many thanks for your reply.

Moschn commented 4 years ago

The openocd config file is in the main Ariane (or CVA6) repository.

As soon as you launch openocd and it sucessfully connects to the FPGA it outputs a port on which you can run riscv-gdb on.

DeltaEnvy commented 4 years ago

ok, I'll try it, after tring ,I'll tell you the result . Thanks for your reply

DeltaEnvy commented 4 years ago

Sorry. After trying, it will report the following error

root@delta:/home/delta/riscv-openocd# openocd -f fpga/ariane.cfg Open On-Chip Debugger 0.10.0+dev-01229-g9ed670771 (2020-08-06-14:37) Licensed under GNU GPL v2 For bug reports, read http://openocd.org/doc/doxygen/bugs.html DEPRECATED! use 'adapter speed' not 'adapter_khz' DEPRECATED! use 'adapter driver' not 'interface' Info : auto-selecting first available session transport "jtag". To override use 'transport select '. Info : clock speed 1000 kHz Error: JTAG scan chain interrogation failed: all ones Error: Check JTAG interface, timings, target power, etc. Error: Trying to use configured scan chain anyway... Error: riscv.cpu: IR capture error; saw 0x1f not 0x01 Warn : Bypassing JTAG setup events due to errors Error: Unsupported DTM version: 15 Info : starting gdb server for riscv.cpu on 3333 Info : Listening on port 3333 for gdb connections Error: Target not examined yet

please tell me how to solve this problem.

Moschn commented 4 years ago

Just to check: are you sure you use the correct ariane image and the correct jtag usb port?

DeltaEnvy commented 4 years ago

I'm sure that my ariane image is correct. But jtag is configured by using vivado's I/O layout. I configured JA1_P, JA1_N, JA2_P, JA2_N to TDO, TDI, TCK, TMS respectively

Moschn commented 4 years ago

Why do you configure your IO? The release image of ariane already has the correct ports specified.

DeltaEnvy commented 4 years ago

Oh,this is my mistake, I will try again and get back to you,thanks