Initial commit

meta-quanta/meta-gbs/recipes-gbs/hotswap-power-cycle/files/hotswap-power-cycle.service

@@ -0,0 +1,10 @@
+[Unit]
+Description=Power Cycle by Hotswap Controller
+After=gbmc-psu-hardreset.target
+
+[Service]
+Type=oneshot
+ExecStart=/usr/bin/tray_powercycle.sh
+
+[Install]
+WantedBy=gbmc-psu-hardreset.target

meta-quanta/meta-gbs/recipes-gbs/hotswap-power-cycle/files/tray_powercycle.sh

@@ -0,0 +1,38 @@
+#!/bin/bash
+#
+# PSU hard reset (power cycle) script.
+#
+# Power cycle the entire tray by setting the PSU hotswap reset (GPIO218) to high
+#
+# Global variable: PSU_HARDRESET_DELAY specifies the number of seconds to wait
+# before pulling the trigger. If not specified or zero, the script power cycles
+# immediately.
+
+##################################################
+# Stop the phosphor-hwmon daemon
+# Return:
+#   0 if success, non-zero if error
+##################################################
+stop_phosphor_hwmon() {
+  if (( $# != 0 )); then
+    echo 'Usage: stop_phosphor_hwmon' >&2
+    return 1
+  fi
+
+  echo "Stopping phosphor-hwmon" >&2
+  local srv='system-xyz.openbmc_project.Hwmon.slice'
+  systemctl stop "${srv}"
+}
+
+main() {
+  # Stop phosphor-hwmon so that ADM1272 powercycle doesn't happen
+  # in the middle of an i2c transaction and stuck the bus low
+  stop_phosphor_hwmon "$@"
+
+  gpioset gpiochip6 26=1
+}
+
+# Exit without running main() if sourced
+if ! (return 0 2>/dev/null) ; then
+    main "$@"
+fi