rootfs-overlay: add flashing script as rootfs-overlay

Add installer specific rootfs modifications, specifically the flashing
script (haos-flash) and LED control.

Signed-off-by: Stefan Agner <stefan@agner.ch>

configs/green_installer_defconfig

@@ -42,6 +42,16 @@ BR2_LINUX_KERNEL_INTREE_DTS_NAME="rockchip/rk3566-ha-green"
 
 BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
 
+BR2_PACKAGE_OPENSSL=y
+BR2_PACKAGE_LIBCURL=y
+BR2_PACKAGE_LIBCURL_CURL=y
+# BR2_PACKAGE_LIBCURL_EXTRA_PROTOCOLS_FEATURES is not set
+BR2_PACKAGE_LIBCURL_OPENSSL=y
+BR2_PACKAGE_CA_CERTIFICATES=y
+BR2_PACKAGE_XZ=y
+BR2_PACKAGE_JQ=y
+BR2_PACKAGE_UTIL_LINUX=y
+BR2_PACKAGE_UTIL_LINUX_BINARIES=y
 BR2_PACKAGE_ROCKCHIP_BLOBS=y
 BR2_PACKAGE_ROCKCHIP_BLOBS_VERSION="b4558da0860ca48bf1a571dd33ccba580b9abe23"
 BR2_PACKAGE_ROCKCHIP_BLOBS_ATF="bin/rk35/rk3568_bl31_v1.43.elf"
@@ -56,5 +66,6 @@ BR2_PACKAGE_HOST_MTOOLS=y
 BR2_TARGET_ROOTFS_CPIO=y
 BR2_TARGET_ROOTFS_CPIO_ZSTD=y
 
+BR2_ROOTFS_OVERLAY="rootfs-overlay/"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="board/nabucasa/green/post-image.sh"
 BR2_ROOTFS_POST_BUILD_SCRIPT="board/nabucasa/green/post-build.sh"

rootfs-overlay/etc/systemd/timesyncd.conf

@@ -0,0 +1,4 @@
+[Time]
+FallbackNTP=time.cloudflare.com
+# Speed-up boot as first attempt is done before network is up
+ConnectionRetrySec=10

rootfs-overlay/usr/bin/haos-flash

@@ -0,0 +1,53 @@
+#!/bin/ash
+# shellcheck shell=dash
+
+set -e
+set -o pipefail
+
+# Abort if already running
+if pidof dd
+then
+	echo "dd already running, aborting..."
+	exit 1
+fi
+
+if [ "$1" = "dev" ]; then
+	echo "Getting latest Home Assistant OS version from channel dev..."
+	channel="https://version.home-assistant.io/dev.json"
+else
+	echo "Getting latest Home Assistant OS version from channel stable..."
+	channel="https://version.home-assistant.io/stable.json"
+fi
+
+version=$(curl --no-progress-meter -L "${channel}" | jq -r '.hassos.green')
+echo -n "Installing Home Assitant OS ${version} to "
+
+if [ "$1" = "dev" ]; then
+	url="https://os-builds.home-assistant.io/${version}/haos_green-${version}.img.xz"
+else
+	url="https://github.com/home-assistant/operating-system/releases/download/${version}/haos_green-${version}.img.xz"
+fi
+
+if [ -b /dev/mmcblk0 ]
+then
+	echo "mmcblk0."
+	device=/dev/mmcblk0
+else
+	echo "nowhere."
+	echo "No storage media found, exiting."
+	echo none > /sys/class/leds/yellow:heartbeat/trigger
+	exit 1
+fi
+
+echo timer > /sys/class/leds/yellow:heartbeat/trigger
+echo 100 > /sys/class/leds/yellow:heartbeat/delay_on
+echo 100 > /sys/class/leds/yellow:heartbeat/delay_off
+if curl --no-progress-meter -L "$url" | unxz --stdout | dd of=${device} bs=4M
+then
+	echo "Successfully installed Home Assistant OS, shutting down the system"
+	echo default-on > /sys/class/leds/yellow:heartbeat/trigger
+	poweroff
+else
+	echo "Error during Home Assistant OS installation."
+	echo none > /sys/class/leds/yellow:heartbeat/trigger
+fi

rootfs-overlay/usr/lib/systemd/system-preset/70-haos-installer.preset

@@ -0,0 +1 @@
+enable systemd-time-wait-sync.service

rootfs-overlay/usr/lib/systemd/system/install-autostart.service

@@ -0,0 +1,13 @@
+[Unit]
+Description=Autostart Home Assistant OS installation
+Wants=network-online.target time-sync.target
+After=network-online.target time-sync.target
+DefaultDependencies=no
+
+[Service]
+Type=idle
+ExecStart=-/usr/bin/haos-flash stable
+StandardOutput=journal+console
+
+[Install]
+WantedBy=basic.target