recipes-connectivity: Add bt-qca-set-bdaddr recipe to setup BT BDADDR

recipes-connectivity/qca-set-bdaddr/bt-qca-set-bdaddr.bb

@@ -0,0 +1,34 @@
+SUMMARY = "Boot-time BDADDR setup for Qualcomm QCA Bluetooth device"
+DESCRIPTION = "Systemd service and script to generate Device Address (BDADDR)  \
+for unconfigured Qualcomm QCA BT SoCs and program it using btmgmt at every boot."
+
+inherit systemd
+
+SRC_URI = " \
+    file://qca_set_bdaddr.service \
+    file://qca_set_bdaddr.sh \
+"
+
+S = "${UNPACKDIR}"
+
+SYSTEMD_SERVICE:${PN} = "qca_set_bdaddr.service"
+SYSTEMD_AUTO_ENABLE:${PN} = "enable"
+
+FILES:${PN} += " \
+    ${systemd_unitdir}/system/qca_set_bdaddr.service \
+    ${bindir}/qca_set_bdaddr.sh \
+"
+
+do_install() {
+    # Install systemd unit
+    install -D -m 0644 ${S}/qca_set_bdaddr.service \
+        ${D}${systemd_unitdir}/system/qca_set_bdaddr.service
+
+    # Install script
+    install -D -m 0755 ${S}/qca_set_bdaddr.sh \
+        ${D}${bindir}/qca_set_bdaddr.sh
+}
+
+RDEPENDS:${PN} += " \
+    bluez5-noinst-tools \
+"

recipes-connectivity/qca-set-bdaddr/files/qca_set_bdaddr.service

@@ -0,0 +1,12 @@
+[Unit]
+Description=Set Bluetooth Device Address (BDADDR) for unconfigured Qualcomm BT chipsets.
+ConditionPathExists=/sys/devices/soc0/serial_number
+Requires=bluetooth.service
+After=bluetooth.service
+
+[Service]
+Type=oneshot
+ExecStart=+/usr/bin/qca_set_bdaddr.sh
+
+[Install]
+WantedBy=bluetooth.target

recipes-connectivity/qca-set-bdaddr/files/qca_set_bdaddr.sh

@@ -0,0 +1,172 @@
+#!/bin/sh
+# Copyright (c) 2025 Qualcomm Innovation Center, Inc. All rights reserved.
+# SPDX-License-Identifier: BSD-3-Clause-Clear
+
+# Exit on error
+set -eu
+
+# Configurable paths
+SERIAL_FILE=${SERIAL_FILE:-/sys/devices/soc0/serial_number}
+TMP_LOG=$(mktemp /tmp/btmgmt_output.XXXXXX)
+
+# Cleanup on exit
+trap 'rm -f "$TMP_LOG"' EXIT
+
+# Debug mode (set DEBUG=1 to enable)
+DEBUG=${DEBUG:-0}
+
+# Choose an official Qualcomm 3-byte Organizationally Unique Identifier(OUI) 
+# See IEEE/lookup citations: https://standards-oui.ieee.org/.
+OUI="A0:BD:71"
+
+debug_log() {
+    if [ "$DEBUG" -eq 1 ]; then
+        echo "[DEBUG] $*" >&2
+    fi
+}
+
+# Helper to log errors with timestamps
+log_error() {
+    echo "$(date '+%Y-%m-%d %H:%M:%S') ERROR: $*" >&2
+}
+
+# Verify required external commands
+REQUIRED_CMDS="printf sed grep hciconfig bluetoothctl btmgmt awk"
+for cmd in $REQUIRED_CMDS; do
+    if ! command -v "$cmd" >/dev/null 2>&1; then
+        log_error "Required command '$cmd' not found"
+        exit 1
+    fi
+done
+
+# Ensure script is run as root
+if [ "$(id -u)" -ne 0 ]; then
+    log_error "This script must be run as root"
+    exit 1
+fi
+
+set_bda() {
+    # Read serial number
+    if [ ! -f "$SERIAL_FILE" ]; then
+        log_error "Serial number file not found: $SERIAL_FILE"
+        return 1
+    fi
+
+    serial_number=$(cat "$SERIAL_FILE")
+    debug_log "Serial number: $serial_number"
+
+    if [ -z "$serial_number" ]; then
+        log_error "Serial number is empty"
+        return 1
+    fi
+
+    case "$serial_number" in
+        *[!0-9]*)
+            log_error "Serial number is not numeric"
+            return 1
+            ;;
+    esac
+
+    # Extract exactly 6 hex characters (3 bytes) from the serial number.
+    # If fewer than 6 digits, pad with leading zero
+    dev_suffix_hex=$(printf "%06X" "$serial_number" | awk '{print substr($0, length($0)-5)}')
+    debug_log "Padded hex serial number: $dev_suffix_hex"
+
+    # Validate non-empty and not all zeros
+    if [ -z "$dev_suffix_hex" ] || [ "$dev_suffix_hex" = "000000" ]; then
+        log_error "Invalid device suffix: $dev_suffix_hex"
+        return 1
+    fi
+
+    # Format as colon-separated bytes
+    dev_suffix=$(echo "$dev_suffix_hex" | sed 's/\(..\)/\1:/g;s/:$//')
+    debug_log "Formatted serial number: $dev_suffix"
+
+    # Build BD_ADDR
+    BDA="$OUI:$dev_suffix"
+    debug_log "Target BDA: $BDA"
+
+    # Validate BD_ADDR format (must be 6 octets)
+    if ! echo "$BDA" | grep -Eq '^([0-9A-F]{2}:){5}[0-9A-F]{2}$'; then
+        log_error "Invalid BDA format: $BDA"
+        return 1
+    fi
+
+    sleep 1
+
+    # Set BD address using btmgmt
+    {
+        echo "public-addr $BDA"
+        sleep 1
+    } | btmgmt >"$TMP_LOG" 2>&1
+    btmgmt_status=$?
+
+    if [ "$btmgmt_status" -ne 0 ]; then
+        log_error "btmgmt failed (exit $btmgmt_status)"
+        cat "$TMP_LOG" >&2
+        return 1
+    fi
+
+    if ! grep -q "public-addr $BDA" "$TMP_LOG"; then
+        log_error "btmgmt output does not confirm address set"
+        cat "$TMP_LOG" >&2
+        return 1
+    fi
+
+    debug_log "BD address successfully set to $BDA"
+    return 0
+}
+
+validate_and_set_bda() {
+    attempts=0
+    max_attempts=10
+
+    while [ "$attempts" -lt "$max_attempts" ]; do
+        hciconfig_output=$(hciconfig)
+        echo "$hciconfig_output" | grep -q 'BD Address' || {
+            log_error "hciconfig output missing BD Address"
+            return 1
+        }
+
+        bd_address=$(echo "$hciconfig_output" | grep 'BD Address' | awk '{print $3}')
+        debug_log "Current BD Address: $bd_address"
+        unconfigured=$(echo "$hciconfig_output" | grep -o 'DOWN RAW')
+        configured=$(echo "$hciconfig_output" | grep -o 'DOWN')
+
+        # Check if the BD Address is 00:00:00:00:00:00
+        if [ "$bd_address" = "00:00:00:00:00:00" ]; then
+            sleep 1
+        elif  [[ "$unconfigured" == "DOWN RAW" ]]; then
+           break
+        elif [[ "$configured" == "DOWN" ]]; then
+           echo "BD-Address already configured!!"
+           return 0
+        else
+            break
+        fi
+
+        sleep 1
+        attempts=$((attempts + 1))
+    done
+
+    if [ "$attempts" -ge "$max_attempts" ]; then
+        log_error "Max attempts reached without configuring BD address"
+        return 1
+    fi
+
+    if ! set_bda; then
+        log_error "set_bda failed"
+        return 1
+    fi
+
+    return 0
+}
+
+# Check bluetoothctl output
+bluetoothctl_output=$(bluetoothctl show || true)
+echo "$bluetoothctl_output" | grep -q "No default controller available" && {
+    if ! validate_and_set_bda; then
+        log_error "validate_and_set_bda failed"
+        exit 1
+    fi
+}

recipes-products/images/qcom-minimal-image.bb

@@ -12,6 +12,7 @@ REQUIRED_DISTRO_FEATURES = "pam systemd"
 CORE_IMAGE_BASE_INSTALL += " \
     kernel-modules \
     packagegroup-qcom-utilities-filesystem-utils \
+    bt-qca-set-bdaddr \
 "
 
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