Initial commit

meta-raspberrypi/recipes-bsp/gpio-shutdown/files/bind_gpio_shutdown.tab

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+# Action on special keypress (Key Power)
+kb::kbrequest:/sbin/shutdown -t1 -a -h -P now

meta-raspberrypi/recipes-bsp/gpio-shutdown/files/gpio-shutdown-keymap.sh

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+#!/bin/sh
+##
+# Bind the gpio-shutdown keycode as Keyboard signal and load it to the
+# keymap during startup.
+##
+case "$1" in
+    start)
+    # Inject the gpio keycode to keymap
+    echo "keycode 116 = KeyboardSignal" | loadkeys
+    ;;
+    *)
+    ;;
+esac

meta-raspberrypi/recipes-bsp/gpio-shutdown/gpio-shutdown.bb

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+SUMMARY = "GPIO shutdown bindings for SysV init"
+LICENSE = "GPL-2.0-only"
+LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/GPL-2.0-only;md5=801f80980d171dd6425610833a22dbe6"
+
+SRC_URI = "file://bind_gpio_shutdown.tab \
+    file://gpio-shutdown-keymap.sh \
+"
+
+inherit  update-rc.d
+
+INITSCRIPT_NAME = "gpio-shutdown-keymap.sh"
+# Run only once during startup
+INITSCRIPT_PARAMS = "start 99 S ."
+
+do_install() {
+    # The files are only needed if using SysV init.
+    if ${@bb.utils.contains('DISTRO_FEATURES', 'sysvinit', 'true', 'false', d)}; then
+        install -d ${D}${sysconfdir} \
+            ${D}${sysconfdir}/inittab.d \
+            ${D}${sysconfdir}/init.d
+
+        install -m 0755 ${WORKDIR}/gpio-shutdown-keymap.sh ${D}${sysconfdir}/init.d/
+        install -m 0755 ${WORKDIR}/bind_gpio_shutdown.tab ${D}${sysconfdir}/inittab.d/
+    elif ${@bb.utils.contains('DISTRO_FEATURES', 'systemd', 'true', 'false', d)}; then
+        # Systemd init does not require any configuration.
+        # Note: cannot have an empty branch, hence the redundant dir install.
+        install -d ${D}${sysconfdir}
+    else
+        bbwarn "Not using sysvinit or systemd. The gpio-shutdown may require additional configuration."
+    fi
+}