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tigard-tools / tigard

An FTDI FT2232H-based multi-protocol tool for hardware hacking
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OpenOCD via JTAG port on SiFive HiFive1 Rev B02 board using Tigard #68

Closed svanimisetti closed 4 months ago

svanimisetti commented 4 months ago

This issue is related to #67.

I am trying to use Tigard with OpenOCD to program/debug SiFive HiFive1 Rev B02 via JTAG interface. This board is based on the RISC-V FE310-G002 microcontroller. The board has an on-board 2x5 0.05" CORTEX header with JTAG interface. See user manual for more information.

  1. Connect Tigard with HiFive1 board using standard cable supplied with Tigard
  2. I have already installed WinUSB driver for interface 1 using Zadig (#47). Updated from FTDIBUS (v2.12.36.4) to WinUSB (v6.1.7600.16385) [USB ID: 0403 6010 01]
  3. Set power switch to 3v3 and mode switch to JTAG/SPI on Tigard.
  4. I am using OpenOCD v0.12.0-2. When I launch with default script that came with installation (openocd.exe -f board/sifive-hifive1-revb.cfg -f interface/ftdi/tigard.cfg), I observed the following error.

    Error: No J-Link device found

  5. Also, if I change the order of the arguments when I pass the scripts, the error is different.

    Error: invalid command name "jlink" in procedure 'script' at file "embedded:startup.tcl", line 28

Based on the previous experience with STM32, I am assuming that standard/generic configuration files may not be sufficient for interfacing the board with Tigard using OpenOCD. I could not find any issues reported on this repo with RISC-V microcontrollers or JTAG interface - so any suggestions would be greatly appreciated!

svanimisetti commented 4 months ago

Posted the issue a little too soon. I did not realize that response to #54 by @Seas0 already listed a JTAG configuraiton file. I just combined it with the default configuration (board/sifive-hifive1-revb.cfg) to arrive at the following custom configuration file.

# This script combines the following:
#C:\apps\openocd-v0.12.0\share\openocd\scripts\interface\ftdi\tigard.cfg
#C:\apps\openocd-v0.12.0\openocd\scripts\board\sifive-hifive1-revb.cfg

adapter driver ftdi
adapter speed 4000
transport select jtag
ftdi device_desc "Tigard V1.1"
ftdi vid_pid 0x0403 0x6010
ftdi channel 1
ftdi_layout_init 0x0038 0x003b
ftdi_layout_signal nTRST -data 0x0010
ftdi_layout_signal nSRST -data 0x0020
reset_config trst_and_srst separate srst_nogate trst_push_pull srst_push_pull

set _CHIPNAME riscv
jtag newtap $_CHIPNAME cpu -irlen 5 -expected-id 0x20000913
set _TARGETNAME $_CHIPNAME.cpu
target create $_TARGETNAME.0 riscv -chain-position $_TARGETNAME
$_TARGETNAME.0 configure -work-area-phys 0x80000000 -work-area-size 0x4000 -work-area-backup 0
flash bank onboard_spi_flash fespi 0x20000000 0 0 0 $_TARGETNAME.0
init

Running using openocd.exe -f tigard_openocd_jtag_sifive_hifive1_revb02.cfg following with targets via telnet listed the board!

> targets
    TargetName         Type       Endian TapName            State
--  ------------------ ---------- ------ ------------------ ------------
 0* riscv.cpu.0        riscv      little riscv.cpu          running
svanimisetti commented 4 months ago

Resolved using combination of default scripts and solution from #54