How to flash and debug with JTAG - starfive-tech/edk2 GitHub Wiki

Start TeraTerm

  1. Download Tera Term with this link
  2. Setup Tera Term:

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Connect JTAG According to Table 1 Below

Table 1: JTAG Pin Connection

JTAG Pins 40-Pin Number VisionFive2 (JH7110)
JTAG TDO 40 GPIO44
JTAG TCK 37 GPIO60
JTAG TDI 38 GPIO61
JTAG TMS 35 GPIO63
JTAG TRSTN 36 GPIO36

Debugger used "Olimex Tiny-H"

Create U-Boot SPL for debugging

  1. Download and unzip "debug_tools.zip" from here
  2. Apply "0001-U-Boot_SPL_debug.patch" patch into U-Boot project
cd <uboot project folder>
git apply < 0001-U-Boot_SPL_debug.patch
  1. Recompile U-Boot SPL (can refer here)
  2. Flash U-Boot SPL into the boot device of your choice (SD Card, QSPI Flash, or eMMC)
  3. Select the boot device (refer to here)
  4. Power up the board and TeraTerm will display the following message:

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Connect to VisionFive 2

  1. Download and unzip "debug_tools.zip" from here
  2. Copy JH7110.fd to the same folder as debug_tools

Refer here download or build JH7110.fd

  1. Launch the terminal and run OpenOCD
./openocd.exe -f VisionFive2_JTAG.cfg

if you meet error(s) when running the above command. Please check if "ftdi serial" is set correctly

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  1. Run "riscv64-unknown-elf-gdb.exe"
target remote: 3333
set $pc=0x40000000
c

Refer here for GDB basic commands