skgpio(4)

skgpio4

Soekris net6501 gpio and leds

Usage

skgpio0 at isa? port 0x680 gpio* at skgpio?

Overview

The skgpio driver provides support for the GPIO and LEDs as implemented by the Xilinx Spartan FGPA integrated into the Soekris net6501 programmed with the default bitstream found in the BIOS.

Two standard gpio(4) interfaces are provided, one for the 16 real pins which can be configured as either inputs or outputs and another with 2 output-only pins that map to the error and ready LEDs respectively. Both may be used with gpioctl(8).

History

The skgpio driver first appeared in OpenBSD 5.7.

Authors

The skgpio driver was written by Matt Dainty ⟨[email protected]⟩.

Bugs

If the Xilinx FPGA is programmed with a different bitstream, the driver will likely not function.

From man 8.0-current-20261101 in OpenBSD 8.0-current (2026-11-01). Parsed by carta from the page's mdoc source.