diff --git a/.github/workflows/build-packages-pr.yaml b/.github/workflows/build-packages-pr.yaml
index 1022547..63277cb 100644
--- a/.github/workflows/build-packages-pr.yaml
+++ b/.github/workflows/build-packages-pr.yaml
@@ -2,6 +2,7 @@ name: Build packages PR
 
 on:
   pull_request:
+    types: [ labeled ]
     paths:
       - 'packages/**'
       - 'packages.sh'
@@ -24,3 +25,9 @@ jobs:
     uses: duhow/xiaoai-patch/.github/workflows/build-packages.yaml@master
     with:
       model: LX06
+  s12:
+    name: S12
+    if: contains(github.event.pull_request.labels.*.name, 'S12')
+    uses: duhow/xiaoai-patch/.github/workflows/build-packages.yaml@master
+    with:
+      model: S12
diff --git a/packages.sh b/packages.sh
index d9c6976..03eda4f 100755
--- a/packages.sh
+++ b/packages.sh
@@ -630,12 +630,18 @@ done
 
 BUILD_ID=$(rand_str)
 BUILD_ARCH="armv7"
+if [[ ! -z "${ARCH}" ]]; then
+  BUILD_ARCH="${ARCH}"
+fi
 if [[ -f "squashfs-root/usr/share/mico/version" ]]; then
 	BUILD_MODEL=$(grep HARDWARE squashfs-root/usr/share/mico/version | awk '{print $3}' | tr -d "'" | tr "[:lower:]" "[:upper:]")
 fi
 if [[ ! -z "${MODEL}" ]]; then
 	BUILD_MODEL="${MODEL}"
 fi
+if [[ "${BUILD_MODEL}" = "S12" ]]; then
+  BUILD_ARCH="aarch64"
+fi
 HOST_ARCH=$(uname -m)
 ymd=$(date '+%Y%m%d')
 PACKAGES_PROCESSED=()
diff --git a/packages/glibc/package.mk b/packages/glibc/package.mk
index 3ad0653..584ca60 100644
--- a/packages/glibc/package.mk
+++ b/packages/glibc/package.mk
@@ -1,5 +1,8 @@
 PACKAGE_NAME="GNU C Library"
 PACKAGE_VERSION="2.27"
+
+[ "${BUILD_MODEL}" = "S12" ] && PACKAGE_VERSION="2.19"
+
 PACKAGE_SRC="https://github.com/bminor/glibc/archive/refs/tags/glibc-${PACKAGE_VERSION}.tar.gz"
 PACKAGE_DEPENDS="toolchain kernel-headers"
 PACKAGE_USE_SEPARATE_BUILD_DIR="true"
diff --git a/packages/kernel-headers/package.mk b/packages/kernel-headers/package.mk
index 797015a..23eabd5 100644
--- a/packages/kernel-headers/package.mk
+++ b/packages/kernel-headers/package.mk
@@ -1,9 +1,8 @@
 PACKAGE_NAME="Linux kernel headers"
 PACKAGE_VERSION="4.9.61" # LX06
 
-if [ "${BUILD_MODEL}" = "LX01" ]; then
-PACKAGE_VERSION="3.4.39"
-fi
+[ "${BUILD_MODEL}" = "LX01" ] && PACKAGE_VERSION="3.4.39"
+[ "${BUILD_MODEL}" = "S12" ] && PACKAGE_VERSION="3.14.29"
 
 PACKAGE_SRC="https://cdn.kernel.org/pub/linux/kernel/v${PACKAGE_VERSION:0:1}.x/linux-${PACKAGE_VERSION}.tar.xz"
 
@@ -14,10 +13,10 @@ install_package() {
 		"arm"|"armv7")
 		kernel_arch="arm"
 		;;
-	"x86")
-		kernel_arch="x86"
+		"aarch64")
+		kernel_arch="arm64"
 		;;
-	*)
+		*)
 		echo_error "Error: Unknown target '${BUILD_ARCH}'. Toolchain setup failed."
 		return 1
 		;;
diff --git a/packages/toolchain/package.mk b/packages/toolchain/package.mk
index 20b2e98..9f08825 100644
--- a/packages/toolchain/package.mk
+++ b/packages/toolchain/package.mk
@@ -1,67 +1,33 @@
 PACKAGE_NAME="GNU Toolchain for the A-profile Architecture"
-PACKAGE_VERSION="GCC 7.4-2019.02"
-PACKAGE_SRC="https://releases.linaro.org/components/toolchain/binaries/7.4-2019.02/arm-linux-gnueabihf/gcc-linaro-7.4.1-2019.02-x86_64_arm-linux-gnueabihf.tar.xz"
+PACKAGE_VERSION="7.4.1-2019.02"
+PACKAGE_SUBVERSION="7.4-2019.02"
+BUILD_TARGET="arm-linux-gnueabihf"
+
+if [ "${BUILD_ARCH}" = "aarch64" ] || [ "${MODEL}" = "S12" ]; then
+BUILD_TARGET="aarch64-linux-gnu"
+fi
+
+PACKAGE_SRC="https://releases.linaro.org/components/toolchain/binaries/${PACKAGE_SUBVERSION}/${BUILD_TARGET}/gcc-linaro-${PACKAGE_VERSION}-x86_64_${BUILD_TARGET}.tar.xz"
 
 if [ "${HOST_ARCH}" = "aarch64" ]; then
 PACKAGE_VERSION="10.2-2020.11"
 PACKAGE_SRC="https://developer.arm.com/-/media/Files/downloads/gnu-a/${PACKAGE_VERSION}/binrel/gcc-arm-${PACKAGE_VERSION}-aarch64-arm-none-linux-gnueabihf.tar.xz"
 fi
 
+
 on_exit_build() {
 	TOOLCHAIN_DIR=$(pwd)
 	case ${BUILD_ARCH} in
-	"arm")	
-		BUILD_TARGET="arm-linux-gnueabihf"
-        BUILD_LDFLAGS="-L${STAGING_DIR}/${INSTALL_PREFIX}/lib -Wl,--rpath-link=${STAGING_DIR}/${INSTALL_PREFIX}/lib -Wl,--rpath-link=${STAGING_DIR}/${INSTALL_PREFIX}/lib/pulseaudio -Wl,--rpath-link=${STAGING_DIR}/${INSTALL_PREFIX}/lib/private -Wl,--rpath-link=${TOOLCHAIN_DIR}/${BUILD_TARGET}/libc/lib -Wl,--rpath=${INSTALL_PREFIX}/${BUILD_TARGET}/lib -Wl,--rpath=${INSTALL_PREFIX}/lib -Wl,--dynamic-linker=${INSTALL_PREFIX}/${BUILD_TARGET}/lib/ld-linux-armhf.so.3"
-		;;
-	"armv7")	
-		BUILD_TARGET="arm-linux-gnueabihf"
-
+	"armv7")
+		LIBPATH="lib"
 		# using GCC-10
 		[[ "${HOST_ARCH}" = "aarch64" ]] && BUILD_TARGET="arm-none-linux-gnueabihf"
 
-        BUILD_LDFLAGS="-L${STAGING_DIR}/lib -L${STAGING_DIR}/${INSTALL_PREFIX}/lib -Wl,--rpath-link=${STAGING_DIR}/${INSTALL_PREFIX}/lib -Wl,--rpath-link=${STAGING_DIR}/${INSTALL_PREFIX}/lib/pulseaudio -Wl,--rpath-link=${STAGING_DIR}/${INSTALL_PREFIX}/lib/private -Wl,--rpath=${INSTALL_PREFIX}/${BUILD_TARGET}/lib -Wl,--rpath=${INSTALL_PREFIX}/lib -Wl,--dynamic-linker=/lib/ld-linux-armhf.so.3 -Os"
+				BUILD_LDFLAGS="-L${STAGING_DIR}/lib -L${STAGING_DIR}/${INSTALL_PREFIX}/lib -Wl,--rpath-link=${STAGING_DIR}/${INSTALL_PREFIX}/lib -Wl,--rpath-link=${STAGING_DIR}/${INSTALL_PREFIX}/lib/pulseaudio -Wl,--rpath-link=${STAGING_DIR}/${INSTALL_PREFIX}/lib/private -Wl,--rpath=${INSTALL_PREFIX}/${BUILD_TARGET}/lib -Wl,--rpath=${INSTALL_PREFIX}/lib -Wl,--dynamic-linker=/lib/ld-linux-armhf.so.3 -Os"
 		;;
-	"x86")
-		BUILD_TARGET="i686-linux"
-		BUILD_LDFLAGS="-L${STAGING_DIR}/${INSTALL_PREFIX}/lib -Wl,--rpath-link=${STAGING_DIR}/${INSTALL_PREFIX}/lib -Wl,--rpath-link=${STAGING_DIR}/${INSTALL_PREFIX}/lib/pulseaudio -Wl,--rpath-link=${STAGING_DIR}/${INSTALL_PREFIX}/lib/private -Wl,--rpath=${INSTALL_PREFIX}/${BUILD_TARGET}/lib -Wl,--rpath=${INSTALL_PREFIX}/lib -Wl,--dynamic-linker=${INSTALL_PREFIX}/${BUILD_TARGET}/lib/ld-linux.so.2"
-		# bison in this toolchain is looking at wrong paths, use system one instead
-		# https://github.com/bootlin/toolchains-builder/issues/17
-		if [[ -e ${TOOLCHAIN_DIR}/bin/bison ]]; then
-			mv ${TOOLCHAIN_DIR}/bin/bison ${TOOLCHAIN_DIR}/bin/bison.disabled
-		fi
-		# Use system's Python 
-		if [[ -e ${TOOLCHAIN_DIR}/bin/python3 ]]; then
-			mv ${TOOLCHAIN_DIR}/bin/python3 ${TOOLCHAIN_DIR}/bin/python3.disabled
-		fi
-        # Use system's autoconf
-		if [[ -e ${TOOLCHAIN_DIR}/bin/autoconf ]]; then
-			mv ${TOOLCHAIN_DIR}/bin/autoconf ${TOOLCHAIN_DIR}/bin/autoconf.disabled
-		fi
-		# Use system's autoreconf
-		if [[ -e ${TOOLCHAIN_DIR}/bin/autoreconf ]]; then
-			mv ${TOOLCHAIN_DIR}/bin/autoreconf ${TOOLCHAIN_DIR}/bin/autoreconf.disabled
-		fi
-		# Use system's aclocal
-		if [[ -e ${TOOLCHAIN_DIR}/bin/aclocal ]]; then
-			mv ${TOOLCHAIN_DIR}/bin/aclocal ${TOOLCHAIN_DIR}/bin/aclocal.disabled
-		fi
-        # Use system's autoheader
-		if [[ -e ${TOOLCHAIN_DIR}/bin/autoheader ]]; then
-			mv ${TOOLCHAIN_DIR}/bin/autoheader ${TOOLCHAIN_DIR}/bin/autoheader.disabled
-		fi
-        # Use system's autom4te
-		if [[ -e ${TOOLCHAIN_DIR}/bin/autom4te ]]; then
-			mv ${TOOLCHAIN_DIR}/bin/autom4te ${TOOLCHAIN_DIR}/bin/autom4te.disabled
-		fi
-		# Use system's libtoolize
-		if [[ -e ${TOOLCHAIN_DIR}/bin/libtoolize ]]; then
-			mv ${TOOLCHAIN_DIR}/bin/libtoolize ${TOOLCHAIN_DIR}/bin/libtoolize.disabled
-		fi
-        # Use system's automake
-		if [[ -e ${TOOLCHAIN_DIR}/bin/automake ]]; then
-			mv ${TOOLCHAIN_DIR}/bin/automake ${TOOLCHAIN_DIR}/bin/automake.disabled
-		fi
+	"aarch64")
+		LIBPATH="lib64"
+				BUILD_LDFLAGS="-L${STAGING_DIR}/lib -L${STAGING_DIR}/${INSTALL_PREFIX}/lib -Wl,--rpath-link=${STAGING_DIR}/${INSTALL_PREFIX}/lib -Wl,--rpath-link=${STAGING_DIR}/${INSTALL_PREFIX}/lib/pulseaudio -Wl,--rpath-link=${STAGING_DIR}/${INSTALL_PREFIX}/lib/private -Wl,--rpath=${INSTALL_PREFIX}/${BUILD_TARGET}/lib -Wl,--rpath=${INSTALL_PREFIX}/lib -Wl,--dynamic-linker=/lib/ld-linux-armhf.so.3 -Os"
 		;;
 	*)
 		echo_error "Error: Unknown target '${BUILD_ARCH}'. Toolchain setup failed."
@@ -90,7 +56,7 @@ on_exit_build() {
 	in_to_out ${PACKAGE_DIR}/config/meson-cross-file.in ${TOOLCHAIN_MESON}
 
 	# HACK to avoid errors with LDFLAGS files not found
-	for FILE in /lib/libc.so.6 /lib/ld-linux-armhf.so.3 /usr/lib/libc_nonshared.a /lib/libpthread.so.0 /usr/lib/libpthread_nonshared.a ; do
+	for FILE in /${LIBPATH}/libc.so.6 /${LIBPATH}/ld-linux-armhf.so.3 /${LIBPATH}/ld-linux-aarch64.so.1 /lib/ld-linux-aarch64.so.1 /usr/${LIBPATH}/libc_nonshared.a /${LIBPATH}/libpthread.so.0 /usr/${LIBPATH}/libpthread_nonshared.a ; do
 		[ ! -e ${FILE} ] && ln -s ${STAGING_DIR}/${FILE} ${FILE}
 	done