Device_FPGA

Memory Acquisition Method: FPGA (Hardware)

The LeechCore library supports reading memory using PCILeech FPGA PCIe to USB hardware.

Facts in short:

• Is supported on all supported platforms.
• Acquires memory in read/write mode.
• Acquired memory is assumed to be volatile.
• Have additional requirements.

If having issues with DMA not working fully on AMD or Thunderbolt please check out DMA on AMD and Thunderbolt.

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Connection string:

LeechCore API:

Please specify the acquisition device type (and optionally additional configuration options) LEECHCORE_CONFIG.szDevice when calling LeechCore_Open. Most configuration options should ideally never be used and only exists for debugging purposes. Examples: FPGA FPGA://pciegen=1,tmread=500,tmwrite=200,deviceindex=2.

Options:

ft2232h=1 Use FT2232H and FTD2XX.DLL for USB2 connection (instead of default FT601/FTD3XX.DLL).

pciegen= PCIe generation - 2 (default) or 1 (PCIe gen1).

pcienotconnected= PCIe connection requirement: 0 = PCIe connection required (default); 1 = PCIe connection not required.

devindex= device index to open (if multiple devices exist on system).
The devindex parameter is only supported on Windows. It's ignored on Linux.

devreload= Reload bitstream / restart device: 0 = no reload (default); 1 = reload.
May sometimes unfreeze the device on AC701/ScreamerM2 devices on v4.6+ bitstreams.

readsize= max chunk read size in bytes, multiple of page (default depends on FPGA device).

readretry= number of read retries on read fail.

tmread= Read delay in uS (default depends on FPGA device); applies to old algorithm only.

tmwrite= Write delay in uS (default depends on FPGA device).

tmprobe= Probe delay in uS (default depends on FPGA device).

bdf= Override device id. Example: bdf=0x0400 sets device id to 04:00.0 regardless of actual device id.

algo= read algorithm as per below.

#	algorithm description
0	async normal read (default)
1	async tiny read
2	old normal read
3	old tiny read
4	old async read

Please note that the async algorithm is only available on Windows; Linux will fallback to the synchronous "old" algorithm automatically.

PCILeech / MemProcFS:

Please specify the device type in the -device option.

Examples:

-device FPGA

-device FPGA://devreload=1,algo=1

-device FPGA://pciegen=1,algo=2,tmread=300,tmwrite=300,tmprobe=300

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Requirements:

Requires the FPGA hardware which is connected to the target computer over PCIe and to the analysis computer over USB.

Windows:

FTDI drivers have to be installed if FPGA is used on Windows.

Download the 64-bit FTD3XX.dll from FTDI and place it alongside leechcore.dll.

If using the FT2232H instead of the FT601 please download D2XX drivers from ftdichip.

Linux:

Requires the driver leechcore_ft601_driver_linux from the LeechCore-plugins project. Place leechcore_ft601_driver_linux.so alongside leechcore.so. This driver is pre-packaged together with the binary release distribution of LeechCore. Also requires libusb (apt-get install libusb-1.0-0) and access to the usb device (permission change or run as root may be required) alternatively a Kernel Driver provided by LambdaConcept. The leechcore_ft601_driver_linux driver will automatically attempt to locate the kernel driver before using libusb.

If using the FT2232H instead of the FT601 please download D2XX drivers from ftdichip.