Initial commit

meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_reset.sh

@@ -0,0 +1,40 @@
+#!/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.
+
+# shellcheck source=meta-google/recipes-google/gpio/gpio-ctrl/lib.sh
+source /usr/share/gpio-host-pwr/lib.sh || exit
+
+if [[ "${1-}" == "warm" ]]; then
+  rst_txt='WARM' >&2
+  rst_gpio="$HOST_GPIO_WARM_RESET"
+else
+  rst_txt='COLD' >&2
+  rst_gpio="$HOST_GPIO_COLD_RESET"
+fi
+
+gpio_build_cache 10 "$rst_gpio" || exit
+
+# Do a quick push of the button if PGOOD
+echo "Issuing $rst_txt reset" >&2
+rc=0
+gpio_set_value "$rst_gpio" 1 || rc=$?
+sleep 0.1
+gpio_set_value "$rst_gpio" 0 || rc=$?
+
+# Make sure the watchdog is stopped while the host is in reset
+# and can't possibly restart it.
+host_pwr_stop_watchdog || true
+
+exit $rc