bluetooth-hciattach.sh

#
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2023 Ricardo Pardini <ricardo@pardini.net>
# This file is a part of the Armbian Build Framework https://github.com/armbian/build/
#

# Some boards needs a special treatment for bluetooth, running hciattach manually.
# To use, enable_extension bluetooth-hciattach, and set BLUETOOTH_HCIATTACH_PARAMS and BLUETOOTH_HCIATTACH_RKFILL_NUM.

function extension_prepare_config__bluetooth_hciattach() {
	display_alert "${EXTENSION} ${BOARD}" "initializing config" "info"

	# Bomb if BLUETOOTH_HCIATTACH_PARAMS is not set.
	if [[ -z "${BLUETOOTH_HCIATTACH_PARAMS}" ]]; then
		exit_with_error "${EXTENSION} ${BOARD} - BLUETOOTH_HCIATTACH_PARAMS is not set - please set in the board file."
	fi

	# Default BLUETOOTH_HCIATTACH_RKFILL_NUM to 0 if not set.
	if [[ -z "${BLUETOOTH_HCIATTACH_RKFILL_NUM}" ]]; then
		declare -g BLUETOOTH_HCIATTACH_RKFILL_NUM=0
	fi
}

# Add bluetooth packages to the image (not rootfs cache)
function post_family_config__bluetooth_hciattach_add_bluetooth_packages() {
	display_alert "${EXTENSION} ${BOARD}" "adding bluetooth packages to image" "info"
	add_packages_to_image rfkill bluetooth bluez bluez-tools
}

# Deploy the script and the systemd service in the BSP. It'll be enabled below in the image.
function post_family_tweaks_bsp__bluetooth_hciattach_add_systemd_service() {
	display_alert "${EXTENSION} ${BOARD}" "adding bluetooth hciattach service to BSP" "info"
	: "${destination:?destination is not set}"

	declare script_dir="/usr/local/sbin"
	run_host_command_logged mkdir -pv "${destination}${script_dir}"
	declare script_path="${script_dir}/bluetooth-hciattach.sh"

	cat <<- BT_HCIATTACH_SCRIPT > "${destination}${script_path}"
		#!/bin/bash
		rfkill unblock ${BLUETOOTH_HCIATTACH_RKFILL_NUM}
		hciattach -n ${BLUETOOTH_HCIATTACH_PARAMS}
	BT_HCIATTACH_SCRIPT
	run_host_command_logged chmod -v +x "${destination}${script_path}" # Make it executable

	cat <<- BT_HCIATTACH_SYSTEMD_SERVICE > "$destination"/lib/systemd/system/bluetooth-hciattach.service
		[Unit]
		Description=${BOARD} Bluetooth HCIAttach fix
		After=network.target
		StartLimitIntervalSec=0
		[Service]
		Type=simple
		ExecStart=${script_path}

		[Install]
		WantedBy=multi-user.target
	BT_HCIATTACH_SYSTEMD_SERVICE

	return 0
}

# Enable the service created in the BSP above.
function post_family_tweaks__bluetooth_hciattach_enable_bt_service_in_image() {
	display_alert "${EXTENSION} ${BOARD}" "enabling bluetooth hciattach service in the image" "info"

	chroot_sdcard systemctl --no-reload enable "bluetooth-hciattach.service"

	return 0
}