1 files changed, 65 insertions, 0 deletions
diff --git a/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_poweroff.sh b/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_poweroff.sh
new file mode 100755
index 000000000..58c1da856
--- /dev/null
+++ b/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_poweroff.sh
@@ -0,0 +1,65 @@
+#!/bin/bash
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+source /usr/share/gpio-host-pwr/lib.sh || exit
+
+gpio_build_cache 10 "$HOST_GPIO_PGOOD" "$HOST_GPIO_PWR_BTN" || exit
+gpio_init "$HOST_GPIO_PGOOD" || exit
+
+# Set the power status LED
+if [ -n "$HOST_LED_PWR" ]; then
+  echo 'none' > /sys/class/leds/"$HOST_LED_PWR"/trigger || true
+  echo '0' > /sys/class/leds/"$HOST_LED_PWR"/brightness || true
+fi
+
+# Ensure the watchdog is no longer going to run
+host_pwr_stop_watchdog || true
+
+# We don't want to do anything if the machine is already off
+pgood="$(gpio_get_value "$HOST_GPIO_PGOOD")" || exit
+if (( pgood == 0 )); then
+  echo 'Host is already off, doing nothing' >&2
+  exit 0
+fi
+
+# Do a long push of the button if PGOOD
+echo 'Stopping host power' >&2
+rc=0
+gpio_set_value "$HOST_GPIO_PWR_BTN" 1 || rc=$?
+
+# Loop until we realize that host power is off
+# Limit the loop count to 10 seconds as we should never
+# have to wait this long for poweroff
+s=$SECONDS
+while true; do
+  if ! pgood="$(gpio_get_value "$HOST_GPIO_PGOOD")"; then
+    rc=1
+    break
+  fi
+  if (( pgood == 0 )); then
+    echo 'Host is now off' >&2
+    break
+  fi
+  if (( SECONDS - s > 10 )); then
+    echo 'Poweroff timed out, terminating' >&2
+    rc=2
+    break
+  fi
+  sleep 0.1
+done
+
+gpio_set_value "$HOST_GPIO_PWR_BTN" 0 || rc=$?
+
+exit $rc