ichwdt(4)

ichwdt4

Intel 6300esb ich watchdog timer device

Usage

ichwdt* at pci?

Overview

The ichwdt driver supports the watchdog timer of the Intel 6300ESB I/O Controller Hub.

ichwdt provides the standard watchdog(4) interface and may be used with watchdogd(8). The watchdog timer can be configured via sysctl(8).

Once the watchdog timer resets the CPU, the driver reports it on the next boot displaying the “reboot on timeout” message in the dmesg.

Releases

44 releases since OpenBSD 3.8; the text changed 7 times.

  1. 3.8
  2. 3.9
  3. 4.0–4.1
  4. 4.2–4.5
  5. 4.6
  6. 4.7–5.3
  7. 5.4–5.6
  8. 5.7–8.0

History

The ichwdt device first appeared in OpenBSD 3.8.

Authors

The ichwdt driver was written by Alexander Yurchenko ⟨[email protected]⟩.

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