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