Rev 1.8
42
Mellanox Technologies
6.3
Examples of mlx_fpga Usage
6.3.1 Adding FPGA mst Device Interface
6.3.1.1 Burning the FPGA’s Flash Device Using the mlx_fpga Burning Tool
mlx_fpga tool burns a .bin file onto the FPGA flash device.
Step 1.
Burn the image.
Step 2.
Load the FPGA image from flash according to
Section 6.3.1.2, “Loading Tool,” on
or power cycle the machine for change to take effect.
6.3.1.2 Loading Tool
• Load an FPGA image from user configurable flash:
where
<optional: load options>
is:
# modprobe mlx5_fpga_tools
# mst start --with_fpga
# mst status
MST modules:
------------
MST PCI module is not loaded
MST PCI configuration module is not loaded
MST devices:
------------
No MST devices were found nor MST modules were loaded.
You may need to run 'mst start' to load MST modules.
FPGA devices:
-------------------
/dev/mst/mt4117_pciconf0_fpga_i2c
/dev/mst/mt4117_pciconf1_fpga_rdma
a
a. It is recommended to use the RDMA device as it uses the “fast path” to the FPGA. I2C is used for recov-
ery purposes when RDMA is not functional.
It is recommended to burn the FPGA device using an RDMA device as it uses the “fast path”
to the FPGA thus minimizing the burning time.
# mlx_fpga -d <device> burn image.bin
# mlx_fpga -d <device> l/load <optional: load options>
--factory
Load FPGA image from factory flash
--user
Load FPGA image from user flash [default option]
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