Information about LeetDma about pcileech-fpga

[Relys]

So I just picked up a LeetDMA card for 1299 Yen (~$185) from taobao and used pandabuy site as a courier. $206.79 total for everything with DHL Express and Insurance. Very good deal.

Initially, I had issues getting the jtag port to work. I plugged in the cable and two USB To UART+JTAG interfaces show up by QinHeg Electronics USB\VID_1A86&PID_55DD&MI_00 & USB\VID_1A86&PID_55DD&MI_02 respectively.

Anyways, I was able to figure out that they used QinHeg CH347 chip instead of FTDI https://www.wch.cn/

Drivers can be found in:
https://www.wch.cn/search?q=USB%E8%BD%AC%E4%B8%B2%E5%8F%A3&t=downloads
CH341PAR.EXE
CH343SER.EXE

Additionally, a custom version of OpenOCD is needed which can be found here: https://github.com/WCHSoftGroup/ch347/tree/main/OpenOCD_CH347/bin

Here's how to backup existing custom firmware on the device for all you other poor souls out there who haven't used openocd in years.

To dump:

# 指定CH347-JTAG 调试器
adapter driver ch347
ch347 vid_pid 0x1a86 0x55dd

# 设置TCK时钟频率
adapter speed 10000

source [find cpld/xilinx-xc7.cfg]
source [find cpld/jtagspi.cfg]
init
jtagspi_init 0 bscan_spi_xc7a35t.bit
flash read_bank 0x0 output.bin
shutdown

To flash:

# 指定CH347-JTAG 调试器
adapter driver ch347
ch347 vid_pid 0x1a86 0x55dd

# 设置TCK时钟频率
adapter speed 10000

proc fpga_program {} {
	global _CHIPNAME
	xc7_program $_CHIPNAME.tap
}

source [find cpld/xilinx-xc7.cfg]
source [find cpld/jtagspi.cfg]
init
jtagspi_init 0 bscan_spi_xc7a35t.bit
jtagspi_program pcileech_squirrel_top.bin 0x0
fpga_program
shutdown

[ufrisk]

Many thanks for this info. I'm happy to see the issue is resolved.

[ufrisk]

Hi, the LeetDMA is directly compatible with the Squirrel. You can download the pre-built firmware and flash it, or download the Squirrel sources and modify them to your wishes.

I should add something about this in the documentation...

[dvGrab]

It looks like LeetDMA devices are the same as NinjaDMA which are pretty affordable. Thanks for this, helped me out.

[dexus1337]

@Relys first of all, thanks for your guide! Just what i was looking for.

However, it doesnt seem to work for me, i get the following error message:

openocd.exe -f dump.cfg
Open On-Chip Debugger 0.12.0+dev (2023-07-24-11:41)
Licensed under GNU GPL v2
For bug reports, read
        http://openocd.org/doc/doxygen/bugs.html
Info : auto-selecting first available session transport "jtag". To override use 'transport select <transport>'.
Info : CH347 Open Succ.
Info : clock speed 10000 kHz
Info : JTAG tap: xc7.tap tap/device found: 0x0362d093 (mfg: 0x049 (Xilinx), part: 0x362d, ver: 0x0)
Info : JTAG tap: xc7.tap tap/device found: 0x0362d093 (mfg: 0x049 (Xilinx), part: 0x362d, ver: 0x0)
Error: Unknown flash device (ID 0xffffff)

Info : Close the CH347. 

Also the board seems to hang after trying to run this command. The green (status?) led is constantly ON as well. Restetting the system will bring it back though.

Any chance you've run into similar issues?

[z12crypto]

I have followed @Relys' method for flash compiling the firmware, but I encountered an error. What could be the possible issue?

[Relys]

@dexus1337 @z12crypto Maybe try lowering the adapter speed? They could have also changed spi flash chip. Take a look into that. idk

[Relys]

@Relys first of all, thanks for your guide! Just what i was looking for.

However, it doesnt seem to work for me, i get the following error message:

openocd.exe -f dump.cfg
Open On-Chip Debugger 0.12.0+dev (2023-07-24-11:41)
Licensed under GNU GPL v2
For bug reports, read
        http://openocd.org/doc/doxygen/bugs.html
Info : auto-selecting first available session transport "jtag". To override use 'transport select <transport>'.
Info : CH347 Open Succ.
Info : clock speed 10000 kHz
Info : JTAG tap: xc7.tap tap/device found: 0x0362d093 (mfg: 0x049 (Xilinx), part: 0x362d, ver: 0x0)
Info : JTAG tap: xc7.tap tap/device found: 0x0362d093 (mfg: 0x049 (Xilinx), part: 0x362d, ver: 0x0)
Error: Unknown flash device (ID 0xffffff)

Info : Close the CH347. 

Also the board seems to hang after trying to run this command. The green (status?) led is constantly ON as well. Restetting the system will bring it back though.

Any chance you've run into similar issues?

This is what happens when the FPGA is not powered on but you're trying to connect via USB JTAG. Make sure the board is powered on.