Raspi2-3_GenImage Commit - r758:cbd6423e90b0 · Collaboration Tremplin des Sciences

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#!/bin/sh

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#!/bin/sh

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########################################################################

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########################################################################

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# rpi23-gen-image.sh 2015-2017

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# rpi23-gen-image.sh 2015-2017

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#

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#

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# Advanced Debian "stretch" and "buster" bootstrap script for Raspberry Pi

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# Advanced Debian "stretch" and "buster" bootstrap script for Raspberry Pi

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#

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#

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# This program is free software; you can redistribute it and/or

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# This program is free software; you can redistribute it and/or

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# modify it under the terms of the GNU General Public License

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# modify it under the terms of the GNU General Public License

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# as published by the Free Software Foundation; either version 2

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# as published by the Free Software Foundation; either version 2

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# of the License, or (at your option) any later version.

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# of the License, or (at your option) any later version.

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#

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#

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#

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#

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# Big thanks for patches and enhancements by 20+ github contributors!

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# Big thanks for patches and enhancements by 20+ github contributors!

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########################################################################

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########################################################################

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# Are we running as root?

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# Are we running as root?

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if [ "$(id -u)" -ne "0" ] ; then

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if [ "$(id -u)" -ne "0" ] ; then

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echo "error: this script must be executed with root privileges!"

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echo "error: this script must be executed with root privileges!"

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exit 1

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exit 1

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fi

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fi

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# Check if ./functions.sh script exists

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# Check if ./functions.sh script exists

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if [ ! -r "./functions.sh" ] ; then

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if [ ! -r "./functions.sh" ] ; then

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echo "error: './functions.sh' required script not found!"

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echo "error: './functions.sh' required script not found!"

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exit 1

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exit 1

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fi

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fi

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# Load utility functions

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# Load utility functions

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. ./functions.sh

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. ./functions.sh

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# Load parameters from configuration template file

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# Load parameters from configuration template file

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if [ -n "$CONFIG_TEMPLATE" ] ; then

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if [ -n "$CONFIG_TEMPLATE" ] ; then

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use_template

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use_template

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fi

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fi

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# Introduce settings

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# Introduce settings

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set -e

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set -e

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echo -n -e "\n#\n# RPi 0/1/2/3/4 Bootstrap Settings\n#\n"

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echo -n -e "\n#\n# RPi 0/1/2/3/4 Bootstrap Settings\n#\n"

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set -x

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set -x

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# Raspberry Pi model configuration

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# Raspberry Pi model configuration

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RPI_MODEL=${RPI_MODEL:=3P}

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RPI_MODEL=${RPI_MODEL:=3P}

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# Debian release

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# Debian release

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RELEASE=${RELEASE:=buster}

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RELEASE=${RELEASE:=buster}

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if [ $RELEASE = "bullseye" ] ; then

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if [ $RELEASE = "bullseye" ] ; then

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RELEASE=testing

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RELEASE=testing

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fi

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fi

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# Kernel Branch

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# Kernel Branch

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KERNEL_BRANCH=${KERNEL_BRANCH:=""}

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KERNEL_BRANCH=${KERNEL_BRANCH:=""}

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# URLs

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# URLs

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KERNEL_URL=${KERNEL_URL:=https://github.com/raspberrypi/linux}

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KERNEL_URL=${KERNEL_URL:=https://github.com/raspberrypi/linux}

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FIRMWARE_URL=${FIRMWARE_URL:=https://github.com/raspberrypi/firmware/raw/master/boot}

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FIRMWARE_URL=${FIRMWARE_URL:=https://github.com/raspberrypi/firmware/raw/master/boot}

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WLAN_FIRMWARE_URL=${WLAN_FIRMWARE_URL:=https://github.com/RPi-Distro/firmware-nonfree/raw/master/brcm}

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WLAN_FIRMWARE_URL=${WLAN_FIRMWARE_URL:=https://github.com/RPi-Distro/firmware-nonfree/raw/master/brcm}

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FBTURBO_URL=${FBTURBO_URL:=https://github.com/ssvb/xf86-video-fbturbo.git}

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FBTURBO_URL=${FBTURBO_URL:=https://github.com/ssvb/xf86-video-fbturbo.git}

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UBOOT_URL=${UBOOT_URL:=https://git.denx.de/u-boot.git}

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UBOOT_URL=${UBOOT_URL:=https://git.denx.de/u-boot.git}

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VIDEOCORE_URL=${VIDEOCORE_URL:=https://github.com/raspberrypi/userland}

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VIDEOCORE_URL=${VIDEOCORE_URL:=https://github.com/raspberrypi/userland}

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BLUETOOTH_URL=${BLUETOOTH_URL:=https://github.com/RPi-Distro/pi-bluetooth.git}

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BLUETOOTH_URL=${BLUETOOTH_URL:=https://github.com/RPi-Distro/pi-bluetooth.git}

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NEXMON_URL=${NEXMON_URL:=https://github.com/seemoo-lab/nexmon.git}

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NEXMON_URL=${NEXMON_URL:=https://github.com/seemoo-lab/nexmon.git}

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SYSTEMDSWAP_URL=${SYSTEMDSWAP_URL:=https://github.com/Nefelim4ag/systemd-swap.git}

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SYSTEMDSWAP_URL=${SYSTEMDSWAP_URL:=https://github.com/Nefelim4ag/systemd-swap.git}

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# Kernel deb packages for 32bit kernel

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# Kernel deb packages for 32bit kernel

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RPI_32_KERNEL_URL=${RPI_32_KERNEL_URL:=https://github.com/hypriot/rpi-kernel/releases/download/v4.14.34/raspberrypi-kernel_20180422-141901_armhf.deb}

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RPI_32_KERNEL_URL=${RPI_32_KERNEL_URL:=https://github.com/hypriot/rpi-kernel/releases/download/v4.14.34/raspberrypi-kernel_20180422-141901_armhf.deb}

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RPI_32_KERNELHEADER_URL=${RPI_32_KERNELHEADER_URL:=https://github.com/hypriot/rpi-kernel/releases/download/v4.14.34/raspberrypi-kernel-headers_20180422-141901_armhf.deb}

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RPI_32_KERNELHEADER_URL=${RPI_32_KERNELHEADER_URL:=https://github.com/hypriot/rpi-kernel/releases/download/v4.14.34/raspberrypi-kernel-headers_20180422-141901_armhf.deb}

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# Kernel has KVM and zswap enabled - use if KERNEL_* parameters and precompiled kernel are used

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# Kernel has KVM and zswap enabled - use if KERNEL_* parameters and precompiled kernel are used

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RPI3_64_BIS_KERNEL_URL=${RPI3_64_BIS_KERNEL_URL:=https://github.com/sakaki-/bcmrpi3-kernel-bis/releases/download/4.19.102.20200211/bcmrpi3-kernel-bis-4.19.102.20200211.tar.xz}

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RPI3_64_BIS_KERNEL_URL=${RPI3_64_BIS_KERNEL_URL:=https://github.com/sakaki-/bcmrpi3-kernel-bis/releases/download/4.19.102.20200211/bcmrpi3-kernel-bis-4.19.102.20200211.tar.xz}

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# Default precompiled 64bit kernel

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# Default precompiled 64bit kernel

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RPI3_64_DEF_KERNEL_URL=${RPI3_64_DEF_KERNEL_URL:=https://github.com/sakaki-/bcmrpi3-kernel/releases/download/4.19.102.20200211/bcmrpi3-kernel-4.19.102.20200211.tar.xz}

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RPI3_64_DEF_KERNEL_URL=${RPI3_64_DEF_KERNEL_URL:=https://github.com/sakaki-/bcmrpi3-kernel/releases/download/4.19.102.20200211/bcmrpi3-kernel-4.19.102.20200211.tar.xz}

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# Sakaki BIS Kernel RPI4 - https://github.com/sakaki-/bcm2711-kernel-bis

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# Sakaki BIS Kernel RPI4 - https://github.com/sakaki-/bcm2711-kernel-bis

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RPI4_64_BIS_KERNEL_URL=${RPI4_64_BIS_KERNEL_URL:=https://github.com/sakaki-/bcm2711-kernel-bis/releases/download/4.19.102.20200211/bcm2711-kernel-bis-4.19.102.20200211.tar.xz}

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RPI4_64_BIS_KERNEL_URL=${RPI4_64_BIS_KERNEL_URL:=https://github.com/sakaki-/bcm2711-kernel-bis/releases/download/4.19.102.20200211/bcm2711-kernel-bis-4.19.102.20200211.tar.xz}

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# Default precompiled 64bit kernel - https://github.com/sakaki-/bcm2711-kernel

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# Default precompiled 64bit kernel - https://github.com/sakaki-/bcm2711-kernel

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RPI4_64_DEF_KERNEL_URL=${RPI4_64_DEF_KERNEL_URL:=https://github.com/sakaki-/bcm2711-kernel-bis/releases/download/4.19.102.20200211/bcm2711-kernel-bis-4.19.102.20200211.tar.xz}

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RPI4_64_DEF_KERNEL_URL=${RPI4_64_DEF_KERNEL_URL:=https://github.com/sakaki-/bcm2711-kernel-bis/releases/download/4.19.102.20200211/bcm2711-kernel-bis-4.19.102.20200211.tar.xz}

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# Generic

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# Generic

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RPI3_64_KERNEL_URL=${RPI3_64_KERNEL_URL:=$RPI3_64_DEF_KERNEL_URL}

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RPI3_64_KERNEL_URL=${RPI3_64_KERNEL_URL:=$RPI3_64_DEF_KERNEL_URL}

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RPI4_64_KERNEL_URL=${RPI4_64_KERNEL_URL:=$RPI4_64_DEF_KERNEL_URL}

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RPI4_64_KERNEL_URL=${RPI4_64_KERNEL_URL:=$RPI4_64_DEF_KERNEL_URL}

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# Kali kernel src - used if ENABLE_NEXMON=true (they patch the wlan kernel modul)

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# Kali kernel src - used if ENABLE_NEXMON=true (they patch the wlan kernel modul)

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KALI_KERNEL_URL=${KALI_KERNEL_URL:=https://github.com/Re4son/re4son-raspberrypi-linux.git}

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KALI_KERNEL_URL=${KALI_KERNEL_URL:=https://github.com/Re4son/re4son-raspberrypi-linux.git}

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# Build directories

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# Build directories

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WORKDIR=$(pwd)

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WORKDIR=$(pwd)

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BASEDIR=${BASEDIR:=${WORKDIR}/images/${RELEASE}}

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BASEDIR=${BASEDIR:=${WORKDIR}/images/${RELEASE}}

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BUILDDIR="${BASEDIR}/build"

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BUILDDIR="${BASEDIR}/build"

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# Chroot directories

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# Chroot directories

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R="${BUILDDIR}/chroot"

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R="${BUILDDIR}/chroot"

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ETC_DIR="${R}/etc"

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ETC_DIR="${R}/etc"

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LIB_DIR="${R}/lib"

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LIB_DIR="${R}/lib"

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BOOT_DIR="${R}/boot/firmware"

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BOOT_DIR="${R}/boot/firmware"

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KERNEL_DIR="${R}/usr/src/linux"

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KERNEL_DIR="${R}/usr/src/linux"

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WLAN_FIRMWARE_DIR="${LIB_DIR}/firmware/brcm"

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WLAN_FIRMWARE_DIR="${LIB_DIR}/firmware/brcm"

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BLUETOOTH_FIRMWARE_DIR="${ETC_DIR}/firmware/bt"

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BLUETOOTH_FIRMWARE_DIR="${ETC_DIR}/firmware/bt"

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# APT settings

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# APT settings

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APT_SERVER=${APT_SERVER:="ftp.debian.org"}

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APT_SERVER=${APT_SERVER:="ftp.debian.org"}

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APT_PROXY=${APT_PROXY:=""}

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APT_PROXY=${APT_PROXY:=""}

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KEEP_APT_PROXY=${KEEP_APT_PROXY:=false}

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KEEP_APT_PROXY=${KEEP_APT_PROXY:=false}

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# Packages required in the chroot build environment

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# Packages required in the chroot build environment

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APT_INCLUDES=${APT_INCLUDES:=""}

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APT_INCLUDES=${APT_INCLUDES:=""}

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APT_INCLUDES="${APT_INCLUDES},apt-transport-https,apt-utils,ca-certificates,debian-archive-keyring,dialog,sudo,systemd,sysvinit-utils,locales,keyboard-configuration,console-setup,libnss-systemd"

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APT_INCLUDES="${APT_INCLUDES},apt-transport-https,apt-utils,ca-certificates,debian-archive-keyring,dialog,sudo,systemd,sysvinit-utils,locales,keyboard-configuration,console-setup,libnss-systemd"

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# Packages to exclude from chroot build environment

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# Packages to exclude from chroot build environment

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APT_EXCLUDES=${APT_EXCLUDES:=""}

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APT_EXCLUDES=${APT_EXCLUDES:=""}

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# General settings

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# General settings

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SET_ARCH=${SET_ARCH:=32}

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SET_ARCH=${SET_ARCH:=32}

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HOSTNAME=${HOSTNAME:=rpi${RPI_MODEL}-${RELEASE}}

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HOSTNAME=${HOSTNAME:=rpi${RPI_MODEL}-${RELEASE}}

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DEFLOCAL=${DEFLOCAL:="en_US.UTF-8"}

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DEFLOCAL=${DEFLOCAL:="en_US.UTF-8"}

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TIMEZONE=${TIMEZONE:="Europe/Berlin"}

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TIMEZONE=${TIMEZONE:="Europe/Berlin"}

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EXPANDROOT=${EXPANDROOT:=true}

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EXPANDROOT=${EXPANDROOT:=true}

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ENABLE_ROOT=${ENABLE_ROOT:=false}

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ENABLE_ROOT=${ENABLE_ROOT:=false}

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ROOT_PASSWORD=${ROOT_PASSWORD:=raspberry}

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ROOT_PASSWORD=${ROOT_PASSWORD:=raspberry}

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ENABLE_USER=${ENABLE_USER:=true}

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ENABLE_USER=${ENABLE_USER:=true}

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USER_NAME=${USER_NAME:="pi"}

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USER_NAME=${USER_NAME:="pi"}

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USER_PASSWORD=${USER_PASSWORD:=raspberry}

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USER_PASSWORD=${USER_PASSWORD:=raspberry}

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# Keyboard settings

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# Keyboard settings

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XKB_MODEL=${XKB_MODEL:=""}

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XKB_MODEL=${XKB_MODEL:=""}

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XKB_LAYOUT=${XKB_LAYOUT:=""}

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XKB_LAYOUT=${XKB_LAYOUT:=""}

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XKB_VARIANT=${XKB_VARIANT:=""}

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XKB_VARIANT=${XKB_VARIANT:=""}

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XKB_OPTIONS=${XKB_OPTIONS:=""}

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XKB_OPTIONS=${XKB_OPTIONS:=""}

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# Networking settings:

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# Networking settings:

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ENABLE_IPV6=${ENABLE_IPV6:=true}

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ENABLE_IPV6=${ENABLE_IPV6:=true}

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ENABLE_WIRELESS=${ENABLE_WIRELESS:=false}

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ENABLE_WIRELESS=${ENABLE_WIRELESS:=false}

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ENABLE_IPTABLES=${ENABLE_IPTABLES:=false}

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ENABLE_IPTABLES=${ENABLE_IPTABLES:=false}

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ENABLE_HARDNET=${ENABLE_HARDNET:=false}

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ENABLE_HARDNET=${ENABLE_HARDNET:=false}

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ENABLE_IFNAMES=${ENABLE_IFNAMES:=true}

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ENABLE_IFNAMES=${ENABLE_IFNAMES:=true}

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# Network settings (DHCP)

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# Network settings (DHCP)

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ENABLE_ETH_DHCP=${ENABLE_ETH_DHCP:=true}

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ENABLE_ETH_DHCP=${ENABLE_ETH_DHCP:=true}

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ENABLE_WIFI_DHCP=${ENABLE_ETH_DHCP:=true}

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ENABLE_WIFI_DHCP=${ENABLE_ETH_DHCP:=true}

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# Network settings (static)

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# Network settings (static)

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NET_ETH_ADDRESS=${NET_ETH_ADDRESS:=""}

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NET_ETH_ADDRESS=${NET_ETH_ADDRESS:=""}

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NET_ETH_GATEWAY=${NET_ETH_GATEWAY:=""}

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NET_ETH_GATEWAY=${NET_ETH_GATEWAY:=""}

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NET_ETH_DNS_1=${NET_ETH_DNS_1:=""}

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NET_ETH_DNS_1=${NET_ETH_DNS_1:=""}

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NET_ETH_DNS_2=${NET_ETH_DNS_2:=""}

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NET_ETH_DNS_2=${NET_ETH_DNS_2:=""}

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NET_ETH_DNS_DOMAINS=${NET_ETH_DNS_DOMAINS:=""}

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NET_ETH_DNS_DOMAINS=${NET_ETH_DNS_DOMAINS:=""}

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NET_ETH_NTP_1=${NET_ETH_NTP_1:=""}

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NET_ETH_NTP_1=${NET_ETH_NTP_1:=""}

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NET_ETH_NTP_2=${NET_ETH_NTP_2:=""}

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NET_ETH_NTP_2=${NET_ETH_NTP_2:=""}

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# Networking settings (WIFI):

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# Networking settings (WIFI):

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NET_WIFI_SSID=${NET_WIFI_SSID:=""}

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NET_WIFI_SSID=${NET_WIFI_SSID:=""}

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NET_WIFI_PSK=${NET_WIFI_PSK:=""}

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NET_WIFI_PSK=${NET_WIFI_PSK:=""}

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# Network settings (static)

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# Network settings (static)

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NET_WIFI_ADDRESS=${NET_WIFI_ADDRESS:=""}

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NET_WIFI_ADDRESS=${NET_WIFI_ADDRESS:=""}

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NET_WIFI_GATEWAY=${NET_WIFI_GATEWAY:=""}

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NET_WIFI_GATEWAY=${NET_WIFI_GATEWAY:=""}

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NET_WIFI_DNS_1=${NET_WIFI_DNS_1:=""}

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NET_WIFI_DNS_1=${NET_WIFI_DNS_1:=""}

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NET_WIFI_DNS_2=${NET_WIFI_DNS_2:=""}

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NET_WIFI_DNS_2=${NET_WIFI_DNS_2:=""}

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NET_WIFI_DNS_DOMAINS=${NET_WIFI_DNS_DOMAINS:=""}

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NET_WIFI_DNS_DOMAINS=${NET_WIFI_DNS_DOMAINS:=""}

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NET_WIFI_NTP_1=${NET_WIFI_NTP_1:=""}

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NET_WIFI_NTP_1=${NET_WIFI_NTP_1:=""}

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NET_WIFI_NTP_2=${NET_WIFI_NTP_2:=""}

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NET_WIFI_NTP_2=${NET_WIFI_NTP_2:=""}

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# Feature settings

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# Feature settings

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ENABLE_CONSOLE=${ENABLE_CONSOLE:=false}

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ENABLE_CONSOLE=${ENABLE_CONSOLE:=false}

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ENABLE_PRINTK=${ENABLE_PRINTK:=false}

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ENABLE_PRINTK=${ENABLE_PRINTK:=false}

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ENABLE_BLUETOOTH=${ENABLE_BLUETOOTH:=false}

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ENABLE_BLUETOOTH=${ENABLE_BLUETOOTH:=false}

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ENABLE_MINIUART_OVERLAY=${ENABLE_MINIUART_OVERLAY:=false}

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ENABLE_MINIUART_OVERLAY=${ENABLE_MINIUART_OVERLAY:=false}

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ENABLE_TURBO=${ENABLE_TURBO:=false}

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ENABLE_TURBO=${ENABLE_TURBO:=false}

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ENABLE_I2C=${ENABLE_I2C:=false}

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ENABLE_I2C=${ENABLE_I2C:=false}

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ENABLE_SPI=${ENABLE_SPI:=false}

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ENABLE_SPI=${ENABLE_SPI:=false}

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ENABLE_NONFREE=${ENABLE_NONFREE:=false}

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ENABLE_NONFREE=${ENABLE_NONFREE:=false}

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ENABLE_RSYSLOG=${ENABLE_RSYSLOG:=true}

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ENABLE_RSYSLOG=${ENABLE_RSYSLOG:=true}

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ENABLE_SOUND=${ENABLE_SOUND:=false}

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ENABLE_SOUND=${ENABLE_SOUND:=false}

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ENABLE_HWRANDOM=${ENABLE_HWRANDOM:=true}

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ENABLE_HWRANDOM=${ENABLE_HWRANDOM:=true}

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ENABLE_MINGPU=${ENABLE_MINGPU:=false}

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ENABLE_MINGPU=${ENABLE_MINGPU:=false}

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ENABLE_XORG=${ENABLE_XORG:=false}

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ENABLE_XORG=${ENABLE_XORG:=false}

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ENABLE_WM=${ENABLE_WM:=""}

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ENABLE_WM=${ENABLE_WM:=""}

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ENABLE_SYSVINIT=${ENABLE_SYSVINIT:=false}

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ENABLE_SYSVINIT=${ENABLE_SYSVINIT:=false}

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ENABLE_SPLASH=${ENABLE_SPLASH:=true}

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ENABLE_SPLASH=${ENABLE_SPLASH:=true}

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ENABLE_LOGO=${ENABLE_LOGO:=true}

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ENABLE_LOGO=${ENABLE_LOGO:=true}

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ENABLE_SILENT_BOOT=${ENABLE_SILENT_BOOT=false}

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ENABLE_SILENT_BOOT=${ENABLE_SILENT_BOOT=false}

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DISABLE_UNDERVOLT_WARNINGS=${DISABLE_UNDERVOLT_WARNINGS:=}

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DISABLE_UNDERVOLT_WARNINGS=${DISABLE_UNDERVOLT_WARNINGS:=}

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# Advanced settings

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# Advanced settings

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ENABLE_DPHYSSWAP=${ENABLE_DPHYSSWAP:=true}

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ENABLE_DPHYSSWAP=${ENABLE_DPHYSSWAP:=true}

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ENABLE_SYSTEMDSWAP=${ENABLE_SYSTEMDSWAP:=false}

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ENABLE_SYSTEMDSWAP=${ENABLE_SYSTEMDSWAP:=false}

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ENABLE_QEMU=${ENABLE_QEMU:=false}

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ENABLE_QEMU=${ENABLE_QEMU:=false}

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ENABLE_KEYGEN=${ENABLE_KEYGEN:=false}

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ENABLE_KEYGEN=${ENABLE_KEYGEN:=false}

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ENABLE_MINBASE=${ENABLE_MINBASE:=false}

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ENABLE_MINBASE=${ENABLE_MINBASE:=false}

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ENABLE_SPLITFS=${ENABLE_SPLITFS:=false}

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ENABLE_SPLITFS=${ENABLE_SPLITFS:=false}

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ENABLE_INITRAMFS=${ENABLE_INITRAMFS:=false}

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ENABLE_INITRAMFS=${ENABLE_INITRAMFS:=false}

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ENABLE_DBUS=${ENABLE_DBUS:=true}

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ENABLE_DBUS=${ENABLE_DBUS:=true}

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ENABLE_USBBOOT=${ENABLE_USBBOOT=false}

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ENABLE_USBBOOT=${ENABLE_USBBOOT=false}

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CHROOT_SCRIPTS=${CHROOT_SCRIPTS:=""}

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CHROOT_SCRIPTS=${CHROOT_SCRIPTS:=""}

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ENABLE_UBOOT=${ENABLE_UBOOT:=false}

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ENABLE_UBOOT=${ENABLE_UBOOT:=false}

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UBOOTSRC_DIR=${UBOOTSRC_DIR:=""}

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UBOOTSRC_DIR=${UBOOTSRC_DIR:=""}

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ENABLE_FBTURBO=${ENABLE_FBTURBO:=false}

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ENABLE_FBTURBO=${ENABLE_FBTURBO:=false}

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ENABLE_GR_ACCEL=$ENABLE_GR_ACCEL:=true}

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FBTURBOSRC_DIR=${FBTURBOSRC_DIR:=""}

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FBTURBOSRC_DIR=${FBTURBOSRC_DIR:=""}

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ENABLE_VIDEOCORE=${ENABLE_VIDEOCORE:=false}

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ENABLE_VIDEOCORE=${ENABLE_VIDEOCORE:=false}

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VIDEOCORESRC_DIR=${VIDEOCORESRC_DIR:=""}

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VIDEOCORESRC_DIR=${VIDEOCORESRC_DIR:=""}

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ENABLE_NEXMON=${ENABLE_NEXMON:=false}

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ENABLE_NEXMON=${ENABLE_NEXMON:=false}

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NEXMONSRC_DIR=${NEXMONSRC_DIR:=""}

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NEXMONSRC_DIR=${NEXMONSRC_DIR:=""}

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# SSH settings

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# SSH settings

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SSH_ENABLE=${SSH_ENABLE:=true}

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SSH_ENABLE=${SSH_ENABLE:=true}

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SSH_ENABLE_ROOT=${SSH_ENABLE_ROOT:=false}

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SSH_ENABLE_ROOT=${SSH_ENABLE_ROOT:=false}

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SSH_DISABLE_PASSWORD_AUTH=${SSH_DISABLE_PASSWORD_AUTH:=false}

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SSH_DISABLE_PASSWORD_AUTH=${SSH_DISABLE_PASSWORD_AUTH:=false}

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SSH_LIMIT_USERS=${SSH_LIMIT_USERS:=false}

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SSH_LIMIT_USERS=${SSH_LIMIT_USERS:=false}

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SSH_ROOT_PUB_KEY=${SSH_ROOT_PUB_KEY:=""}

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SSH_ROOT_PUB_KEY=${SSH_ROOT_PUB_KEY:=""}

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SSH_USER_PUB_KEY=${SSH_USER_PUB_KEY:=""}

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SSH_USER_PUB_KEY=${SSH_USER_PUB_KEY:=""}

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# Kernel compilation settings

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# Kernel compilation settings

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BUILD_KERNEL=${BUILD_KERNEL:=true}

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BUILD_KERNEL=${BUILD_KERNEL:=true}

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KERNEL_THREADS=${KERNEL_THREADS:=1}

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KERNEL_THREADS=${KERNEL_THREADS:=1}

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KERNEL_HEADERS=${KERNEL_HEADERS:=true}

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KERNEL_HEADERS=${KERNEL_HEADERS:=true}

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KERNEL_MENUCONFIG=${KERNEL_MENUCONFIG:=false}

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KERNEL_MENUCONFIG=${KERNEL_MENUCONFIG:=false}

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KERNEL_OLDDEFCONFIG=${KERNEL_OLDDEFCONFIG:=false}

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KERNEL_OLDDEFCONFIG=${KERNEL_OLDDEFCONFIG:=false}

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KERNEL_CCACHE=${KERNEL_CCACHE:=false}

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KERNEL_CCACHE=${KERNEL_CCACHE:=false}

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KERNEL_REMOVESRC=${KERNEL_REMOVESRC:=true}

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KERNEL_REMOVESRC=${KERNEL_REMOVESRC:=true}

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KERNELSRC_DIR=${KERNELSRC_DIR:=""}

217

KERNELSRC_DIR=${KERNELSRC_DIR:=""}

217

KERNELSRC_CLEAN=${KERNELSRC_CLEAN:=false}

218

KERNELSRC_CLEAN=${KERNELSRC_CLEAN:=false}

218

KERNELSRC_CONFIG=${KERNELSRC_CONFIG:=true}

219

KERNELSRC_CONFIG=${KERNELSRC_CONFIG:=true}

219

KERNELSRC_USRCONFIG=${KERNELSRC_USRCONFIG:=""}

220

KERNELSRC_USRCONFIG=${KERNELSRC_USRCONFIG:=""}

220

KERNELSRC_PREBUILT=${KERNELSRC_PREBUILT:=false}

221

KERNELSRC_PREBUILT=${KERNELSRC_PREBUILT:=false}

221

# Firmware directory: Blank if download from github

222

# Firmware directory: Blank if download from github

222

RPI_FIRMWARE_DIR=${RPI_FIRMWARE_DIR:=""}

223

RPI_FIRMWARE_DIR=${RPI_FIRMWARE_DIR:=""}

223

KERNEL_DEFAULT_GOV=${KERNEL_DEFAULT_GOV:=ondemand}

224

KERNEL_DEFAULT_GOV=${KERNEL_DEFAULT_GOV:=ondemand}

224

KERNEL_NF=${KERNEL_NF:=false}

225

KERNEL_NF=${KERNEL_NF:=false}

225

KERNEL_VIRT=${KERNEL_VIRT:=false}

226

KERNEL_VIRT=${KERNEL_VIRT:=false}

226

KERNEL_ZSWAP=${KERNEL_ZSWAP:=false}

227

KERNEL_ZSWAP=${KERNEL_ZSWAP:=false}

227

KERNEL_BPF=${KERNEL_BPF:=false}

228

KERNEL_BPF=${KERNEL_BPF:=false}

228

KERNEL_SECURITY=${KERNEL_SECURITY:=false}

229

KERNEL_SECURITY=${KERNEL_SECURITY:=false}

229

KERNEL_BTRFS=${KERNEL_BTRFS:=false}

230

KERNEL_BTRFS=${KERNEL_BTRFS:=false}

230

KERNEL_POEHAT=${KERNEL_POEHAT:=false}

231

KERNEL_POEHAT=${KERNEL_POEHAT:=false}

231

KERNEL_NSPAN=${KERNEL_NSPAN:=false}

232

KERNEL_NSPAN=${KERNEL_NSPAN:=false}

232

KERNEL_DHKEY=${KERNEL_DHKEY:=true}

233

KERNEL_DHKEY=${KERNEL_DHKEY:=true}

233

234

# Reduce disk usage settings

235

# Reduce disk usage settings

235

ENABLE_REDUCE=${ENABLE_REDUCE:=false}

236

ENABLE_REDUCE=${ENABLE_REDUCE:=false}

236

REDUCE_APT=${REDUCE_APT:=true}

237

REDUCE_APT=${REDUCE_APT:=true}

237

REDUCE_DOC=${REDUCE_DOC:=false}

238

REDUCE_DOC=${REDUCE_DOC:=false}

238

REDUCE_MAN=${REDUCE_MAN:=false}

239

REDUCE_MAN=${REDUCE_MAN:=false}

239

REDUCE_VIM=${REDUCE_VIM:=false}

240

REDUCE_VIM=${REDUCE_VIM:=false}

240

REDUCE_BASH=${REDUCE_BASH:=false}

241

REDUCE_BASH=${REDUCE_BASH:=false}

241

REDUCE_HWDB=${REDUCE_HWDB:=false}

242

REDUCE_HWDB=${REDUCE_HWDB:=false}

242

REDUCE_SSHD=${REDUCE_SSHD:=false}

243

REDUCE_SSHD=${REDUCE_SSHD:=false}

243

REDUCE_LOCALE=${REDUCE_LOCALE:=false}

244

REDUCE_LOCALE=${REDUCE_LOCALE:=false}

244

REDUCE_KERNEL=${REDUCE_KERNEL:=false}

245

REDUCE_KERNEL=${REDUCE_KERNEL:=false}

245

246

# Encrypted filesystem settings

247

# Encrypted filesystem settings

247

ENABLE_CRYPTFS=${ENABLE_CRYPTFS:=false}

248

ENABLE_CRYPTFS=${ENABLE_CRYPTFS:=false}

248

CRYPTFS_PASSWORD=${CRYPTFS_PASSWORD:=""}

249

CRYPTFS_PASSWORD=${CRYPTFS_PASSWORD:=""}

249

CRYPTFS_MAPPING=${CRYPTFS_MAPPING:="secure"}

250

CRYPTFS_MAPPING=${CRYPTFS_MAPPING:="secure"}

250

CRYPTFS_CIPHER=${CRYPTFS_CIPHER:="aes-xts-plain64"}

251

CRYPTFS_CIPHER=${CRYPTFS_CIPHER:="aes-xts-plain64"}

251

CRYPTFS_HASH=${CRYPTFS_HASH:="sha256"}

252

CRYPTFS_HASH=${CRYPTFS_HASH:="sha256"}

252

CRYPTFS_XTSKEYSIZE=${CRYPTFS_XTSKEYSIZE:=256}

253

CRYPTFS_XTSKEYSIZE=${CRYPTFS_XTSKEYSIZE:=256}

253

#Dropbear-initramfs supports unlocking encrypted filesystem via SSH on bootup

254

#Dropbear-initramfs supports unlocking encrypted filesystem via SSH on bootup

254

CRYPTFS_DROPBEAR=${CRYPTFS_DROPBEAR:=false}

255

CRYPTFS_DROPBEAR=${CRYPTFS_DROPBEAR:=false}

255

#Provide your own Dropbear Public RSA-OpenSSH Key otherwise it will be generated

256

#Provide your own Dropbear Public RSA-OpenSSH Key otherwise it will be generated

256

CRYPTFS_DROPBEAR_PUBKEY=${CRYPTFS_DROPBEAR_PUBKEY:=""}

257

CRYPTFS_DROPBEAR_PUBKEY=${CRYPTFS_DROPBEAR_PUBKEY:=""}

257

258

# Packages required for bootstrapping

259

# Packages required for bootstrapping

259

REQUIRED_PACKAGES="debootstrap debian-archive-keyring qemu-user-static binfmt-support dosfstools rsync bmap-tools whois git bc psmisc dbus bison flex libssl-dev sudo"

260

REQUIRED_PACKAGES="debootstrap debian-archive-keyring qemu-user-static binfmt-support dosfstools rsync bmap-tools whois git bc psmisc dbus bison flex libssl-dev sudo"

260

MISSING_PACKAGES=""

261

MISSING_PACKAGES=""

261

262

# Packages installed for c/c++ build environment in chroot (keep empty)

263

# Packages installed for c/c++ build environment in chroot (keep empty)

263

COMPILER_PACKAGES=""

264

COMPILER_PACKAGES=""

264

265

# Check if apt-cacher-ng has port 3142 open and set APT_PROXY

266

# Check if apt-cacher-ng has port 3142 open and set APT_PROXY

266

APT_CACHER_RUNNING=$(lsof -i :3142 | cut -d ' ' -f3 | uniq | sed '/^\s*$/d')

267

APT_CACHER_RUNNING=$(lsof -i :3142 | cut -d ' ' -f3 | uniq | sed '/^\s*$/d')

267

if [ "${APT_CACHER_RUNNING}" = "apt-cacher-ng" ] ; then

268

if [ "${APT_CACHER_RUNNING}" = "apt-cacher-ng" ] ; then

268

APT_PROXY=http://127.0.0.1:3142/

269

APT_PROXY=http://127.0.0.1:3142/

269

fi

270

fi

270

271

# Setup architecture specific settings

272

# Setup architecture specific settings

272

if [ -n "$SET_ARCH" ] ; then

273

if [ -n "$SET_ARCH" ] ; then

273

## 64-bit configuration

274

## 64-bit configuration

274

if [ "$SET_ARCH" = 64 ] ; then

275

if [ "$SET_ARCH" = 64 ] ; then

275

### General 64-bit depended settings

276

### General 64-bit depended settings

276

QEMU_BINARY=${QEMU_BINARY:=/usr/bin/qemu-aarch64-static}

277

QEMU_BINARY=${QEMU_BINARY:=/usr/bin/qemu-aarch64-static}

277

KERNEL_ARCH=${KERNEL_ARCH:=arm64}

278

KERNEL_ARCH=${KERNEL_ARCH:=arm64}

278

KERNEL_BIN_IMAGE=${KERNEL_BIN_IMAGE:="Image"}

279

KERNEL_BIN_IMAGE=${KERNEL_BIN_IMAGE:="Image"}

279

280

### Raspberry Pi 64-bit model specific settings

281

### Raspberry Pi 64-bit model specific settings

281

if [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] || [ "$RPI_MODEL" = 4 ] ; then

282

if [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] || [ "$RPI_MODEL" = 4 ] ; then

282

if [ "$RPI_MODEL" != 4 ] ; then

283

if [ "$RPI_MODEL" != 4 ] ; then

283

KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcmrpi3_defconfig}

284

KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcmrpi3_defconfig}

284

else

285

else

285

KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcm2711_defconfig}

286

KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcm2711_defconfig}

286

fi

287

fi

287

288

REQUIRED_PACKAGES="${REQUIRED_PACKAGES} crossbuild-essential-arm64"

289

REQUIRED_PACKAGES="${REQUIRED_PACKAGES} crossbuild-essential-arm64"

289

RELEASE_ARCH=${RELEASE_ARCH:=arm64}

290

RELEASE_ARCH=${RELEASE_ARCH:=arm64}

290

KERNEL_IMAGE=${KERNEL_IMAGE:=kernel8.img}

291

KERNEL_IMAGE=${KERNEL_IMAGE:=kernel8.img}

291

CROSS_COMPILE=${CROSS_COMPILE:=aarch64-linux-gnu-}

292

CROSS_COMPILE=${CROSS_COMPILE:=aarch64-linux-gnu-}

292

293

else

294

else

294

echo "error: Only Raspberry PI 3, 3B+ and 4 support 64-bit"

295

echo "error: Only Raspberry PI 3, 3B+ and 4 support 64-bit"

295

exit 1

296

exit 1

296

fi

297

fi

297

fi

298

fi

298

299

## 32-bit configuration

300

## 32-bit configuration

300

if [ "$SET_ARCH" = 32 ] ; then

301

if [ "$SET_ARCH" = 32 ] ; then

301

### General 32-bit dependend settings

302

### General 32-bit dependend settings

302

QEMU_BINARY=${QEMU_BINARY:=/usr/bin/qemu-arm-static}

303

QEMU_BINARY=${QEMU_BINARY:=/usr/bin/qemu-arm-static}

303

KERNEL_ARCH=${KERNEL_ARCH:=arm}

304

KERNEL_ARCH=${KERNEL_ARCH:=arm}

304

KERNEL_BIN_IMAGE=${KERNEL_BIN_IMAGE:="zImage"}

305

KERNEL_BIN_IMAGE=${KERNEL_BIN_IMAGE:="zImage"}

305

306

### Raspberry Pi (0-1P) model specific settings

307

### Raspberry Pi (0-1P) model specific settings

307

if [ "$RPI_MODEL" = 0 ] || [ "$RPI_MODEL" = 1 ] || [ "$RPI_MODEL" = 1P ] ; then

308

if [ "$RPI_MODEL" = 0 ] || [ "$RPI_MODEL" = 1 ] || [ "$RPI_MODEL" = 1P ] ; then

308

REQUIRED_PACKAGES="${REQUIRED_PACKAGES} crossbuild-essential-armel"

309

REQUIRED_PACKAGES="${REQUIRED_PACKAGES} crossbuild-essential-armel"

309

KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcmrpi_defconfig}

310

KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcmrpi_defconfig}

310

RELEASE_ARCH=${RELEASE_ARCH:=armel}

311

RELEASE_ARCH=${RELEASE_ARCH:=armel}

311

KERNEL_IMAGE=${KERNEL_IMAGE:=kernel.img}

312

KERNEL_IMAGE=${KERNEL_IMAGE:=kernel.img}

312

CROSS_COMPILE=${CROSS_COMPILE:=arm-linux-gnueabi-}

313

CROSS_COMPILE=${CROSS_COMPILE:=arm-linux-gnueabi-}

313

if [ $ENABLE_XORG = true ] ; then

314

if [ $ENABLE_XORG = true ] ; then

314

if [$RELEASE = "stretch" ] || [$RELEASE = "oldstable" ] ; then

315

if [$RELEASE = "stretch" ] || [$RELEASE = "oldstable" ] ; then

315

printf "\nBest support for armel architecture is provided under Debian stretch/oldstable. Choose yes to change release to Debian stretch[y/n] "

316

printf "\nBest support for armel architecture is provided under Debian stretch/oldstable. Choose yes to change release to Debian stretch[y/n] "

316

read -r confirm

317

read -r confirm

317

if [ "$confirm" = "y" ] ; then

318

if [ "$confirm" = "y" ] ; then

318

$RELEASE = "stretch"

319

$RELEASE = "stretch"

319

fi

320

fi

320

fi

321

fi

321

fi

322

fi

322

fi

323

fi

323

### Raspberry Pi (2-4) model specific settings

324

### Raspberry Pi (2-4) model specific settings

324

if [ "$RPI_MODEL" = 2 ] || [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] || [ "$RPI_MODEL" = 4 ] ; then

325

if [ "$RPI_MODEL" = 2 ] || [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] || [ "$RPI_MODEL" = 4 ] ; then

325

if [ "$RPI_MODEL" != 4 ] ; then

326

if [ "$RPI_MODEL" != 4 ] ; then

326

KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcm2709_defconfig}

327

KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcm2709_defconfig}

327

KERNEL_IMAGE=${KERNEL_IMAGE:=kernel7.img}

328

KERNEL_IMAGE=${KERNEL_IMAGE:=kernel7.img}

328

else

329

else

329

KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcm2711_defconfig}

330

KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcm2711_defconfig}

330

KERNEL_IMAGE=${KERNEL_IMAGE:=kernel7l.img}

331

KERNEL_IMAGE=${KERNEL_IMAGE:=kernel7l.img}

331

fi

332

fi

332

333

REQUIRED_PACKAGES="${REQUIRED_PACKAGES} crossbuild-essential-armhf"

334

REQUIRED_PACKAGES="${REQUIRED_PACKAGES} crossbuild-essential-armhf"

334

RELEASE_ARCH=${RELEASE_ARCH:=armhf}

335

RELEASE_ARCH=${RELEASE_ARCH:=armhf}

335

336

CROSS_COMPILE=${CROSS_COMPILE:=arm-linux-gnueabihf-}

337

CROSS_COMPILE=${CROSS_COMPILE:=arm-linux-gnueabihf-}

337

fi

338

fi

338

fi

339

fi

339

340

# SET_ARCH not set

341

# SET_ARCH not set

341

else

342

else

342

echo "error: Please set '32' or '64' as value for SET_ARCH"

343

echo "error: Please set '32' or '64' as value for SET_ARCH"

343

exit 1

344

exit 1

344

fi

345

fi

345

# Device specific configuration and U-Boot configuration

346

# Device specific configuration and U-Boot configuration

346

case "$RPI_MODEL" in

347

case "$RPI_MODEL" in

347

0)

348

0)

348

DTB_FILE=${DTB_FILE:=bcm2708-rpi-0-w.dtb}

349

DTB_FILE=${DTB_FILE:=bcm2708-rpi-0-w.dtb}

349

UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_defconfig}

350

UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_defconfig}

350

;;

351

;;

351

1)

352

1)

352

DTB_FILE=${DTB_FILE:=bcm2708-rpi-b.dtb}

353

DTB_FILE=${DTB_FILE:=bcm2708-rpi-b.dtb}

353

UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_defconfig}

354

UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_defconfig}

354

;;

355

;;

355

1P)

356

1P)

356

DTB_FILE=${DTB_FILE:=bcm2708-rpi-b-plus.dtb}

357

DTB_FILE=${DTB_FILE:=bcm2708-rpi-b-plus.dtb}

357

UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_defconfig}

358

UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_defconfig}

358

;;

359

;;

359

2)

360

2)

360

DTB_FILE=${DTB_FILE:=bcm2709-rpi-2-b.dtb}

361

DTB_FILE=${DTB_FILE:=bcm2709-rpi-2-b.dtb}

361

UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_2_defconfig}

362

UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_2_defconfig}

362

;;

363

;;

363

3)

364

3)

364

DTB_FILE=${DTB_FILE:=bcm2710-rpi-3-b.dtb}

365

DTB_FILE=${DTB_FILE:=bcm2710-rpi-3-b.dtb}

365

UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_3_defconfig}

366

UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_3_defconfig}

366

;;

367

;;

367

3P)

368

3P)

368

DTB_FILE=${DTB_FILE:=bcm2710-rpi-3-b.dtb}

369

DTB_FILE=${DTB_FILE:=bcm2710-rpi-3-b.dtb}

369

UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_3_defconfig}

370

UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_3_defconfig}

370

;;

371

;;

371

4)

372

4)

372

DTB_FILE=${DTB_FILE:=bcm2711-rpi-4-b.dtb}

373

DTB_FILE=${DTB_FILE:=bcm2711-rpi-4-b.dtb}

373

UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_4_defconfig}

374

UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_4_defconfig}

374

;;

375

;;

375

*)

376

*)

376

echo "error: Raspberry Pi model $RPI_MODEL is not supported!"

377

echo "error: Raspberry Pi model $RPI_MODEL is not supported!"

377

exit 1

378

exit 1

378

;;

379

;;

379

esac

380

esac

380

381

# Raspberry PI 0,3,3P with Bluetooth and Wifi onboard

382

# Raspberry PI 0,3,3P with Bluetooth and Wifi onboard

382

if [ "$RPI_MODEL" = 0 ] || [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] || [ "$RPI_MODEL" = 4 ] ; then

383

if [ "$RPI_MODEL" = 0 ] || [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] || [ "$RPI_MODEL" = 4 ] ; then

383

## Include bluetooth packages on supported boards

384

## Include bluetooth packages on supported boards

384

if [ "$ENABLE_BLUETOOTH" = true ] ; then

385

if [ "$ENABLE_BLUETOOTH" = true ] ; then

385

APT_INCLUDES="${APT_INCLUDES},bluetooth,bluez"

386

APT_INCLUDES="${APT_INCLUDES},bluetooth,bluez"

386

fi

387

fi

387

if [ "$ENABLE_WIRELESS" = true ] ; then

388

if [ "$ENABLE_WIRELESS" = true ] ; then

388

APT_INCLUDES="${APT_INCLUDES},wireless-tools,crda,wireless-regdb,wpasupplicant"

389

APT_INCLUDES="${APT_INCLUDES},wireless-tools,crda,wireless-regdb,wpasupplicant"

389

fi

390

fi

390

# Raspberry PI 1,1P,2 without Wifi and bluetooth onboard

391

# Raspberry PI 1,1P,2 without Wifi and bluetooth onboard

391

else

392

else

392

## Check if the internal wireless interface is not supported by the RPi model

393

## Check if the internal wireless interface is not supported by the RPi model

393

if [ "$ENABLE_WIRELESS" = true ] || [ "$ENABLE_BLUETOOTH" = true ]; then

394

if [ "$ENABLE_WIRELESS" = true ] || [ "$ENABLE_BLUETOOTH" = true ]; then

394

echo "error: The selected Raspberry Pi model has no integrated interface for wireless or bluetooth"

395

echo "error: The selected Raspberry Pi model has no integrated interface for wireless or bluetooth"

395

exit 1

396

exit 1

396

fi

397

fi

397

fi

398

fi

398

399

if [ "$BUILD_KERNEL" = false ] && [ "$ENABLE_NEXMON" = true ]; then

400

if [ "$BUILD_KERNEL" = false ] && [ "$ENABLE_NEXMON" = true ]; then

400

echo "error: You have to compile kernel sources, if you want to enable nexmon"

401

echo "error: You have to compile kernel sources, if you want to enable nexmon"

401

exit 1

402

exit 1

402

fi

403

fi

403

404

# Prepare date string for default image file name

405

# Prepare date string for default image file name

405

DATE="$(date +%Y-%m-%d)"

406

DATE="$(date +%Y-%m-%d)"

406

if [ -z "$KERNEL_BRANCH" ] ; then

407

if [ -z "$KERNEL_BRANCH" ] ; then

407

IMAGE_NAME=${IMAGE_NAME:=${BASEDIR}/${DATE}-${KERNEL_ARCH}-CURRENT-rpi${RPI_MODEL}-${RELEASE}-${RELEASE_ARCH}}

408

IMAGE_NAME=${IMAGE_NAME:=${BASEDIR}/${DATE}-${KERNEL_ARCH}-CURRENT-rpi${RPI_MODEL}-${RELEASE}-${RELEASE_ARCH}}

408

else

409

else

409

IMAGE_NAME=${IMAGE_NAME:=${BASEDIR}/${DATE}-${KERNEL_ARCH}-${KERNEL_BRANCH}-rpi${RPI_MODEL}-${RELEASE}-${RELEASE_ARCH}}

410

IMAGE_NAME=${IMAGE_NAME:=${BASEDIR}/${DATE}-${KERNEL_ARCH}-${KERNEL_BRANCH}-rpi${RPI_MODEL}-${RELEASE}-${RELEASE_ARCH}}

410

fi

411

fi

411

412

# Check if DISABLE_UNDERVOLT_WARNINGS parameter value is supported

413

# Check if DISABLE_UNDERVOLT_WARNINGS parameter value is supported

413

if [ -n "$DISABLE_UNDERVOLT_WARNINGS" ] ; then

414

if [ -n "$DISABLE_UNDERVOLT_WARNINGS" ] ; then

414

if [ "$DISABLE_UNDERVOLT_WARNINGS" != 1 ] && [ "$DISABLE_UNDERVOLT_WARNINGS" != 2 ] ; then

415

if [ "$DISABLE_UNDERVOLT_WARNINGS" != 1 ] && [ "$DISABLE_UNDERVOLT_WARNINGS" != 2 ] ; then

415

echo "error: DISABLE_UNDERVOLT_WARNINGS=${DISABLE_UNDERVOLT_WARNINGS} is not supported"

416

echo "error: DISABLE_UNDERVOLT_WARNINGS=${DISABLE_UNDERVOLT_WARNINGS} is not supported"

416

exit 1

417

exit 1

417

fi

418

fi

418

fi

419

fi

419

420

# Add cmake to compile videocore sources

421

# Add cmake to compile videocore sources

421

if [ "$ENABLE_VIDEOCORE" = true ] ; then

422

if [ "$ENABLE_VIDEOCORE" = true ] ; then

422

REQUIRED_PACKAGES="${REQUIRED_PACKAGES} cmake"

423

REQUIRED_PACKAGES="${REQUIRED_PACKAGES} cmake"

423

fi

424

fi

424

425

# Add deps for nexmon

426

# Add deps for nexmon

426

if [ "$ENABLE_NEXMON" = true ] ; then

427

if [ "$ENABLE_NEXMON" = true ] ; then

427

REQUIRED_PACKAGES="${REQUIRED_PACKAGES} libgmp3-dev gawk qpdf make autoconf automake build-essential libtool"

428

REQUIRED_PACKAGES="${REQUIRED_PACKAGES} libgmp3-dev gawk qpdf make autoconf automake build-essential libtool"

428

fi

429

fi

429

430

# Add libncurses5 to enable kernel menuconfig

431

# Add libncurses5 to enable kernel menuconfig

431

if [ "$KERNEL_MENUCONFIG" = true ] ; then

432

if [ "$KERNEL_MENUCONFIG" = true ] ; then

432

REQUIRED_PACKAGES="${REQUIRED_PACKAGES} libncurses-dev"

433

REQUIRED_PACKAGES="${REQUIRED_PACKAGES} libncurses-dev"

433

fi

434

fi

434

435

# Add ccache compiler cache for (faster) kernel cross (re)compilation

436

# Add ccache compiler cache for (faster) kernel cross (re)compilation

436

if [ "$KERNEL_CCACHE" = true ] ; then

437

if [ "$KERNEL_CCACHE" = true ] ; then

437

REQUIRED_PACKAGES="${REQUIRED_PACKAGES} ccache"

438

REQUIRED_PACKAGES="${REQUIRED_PACKAGES} ccache"

438

fi

439

fi

439

440

# Add cryptsetup package to enable filesystem encryption

441

# Add cryptsetup package to enable filesystem encryption

441

if [ "$ENABLE_CRYPTFS" = true ] && [ "$BUILD_KERNEL" = true ] ; then

442

if [ "$ENABLE_CRYPTFS" = true ] && [ "$BUILD_KERNEL" = true ] ; then

442

REQUIRED_PACKAGES="${REQUIRED_PACKAGES} cryptsetup"

443

REQUIRED_PACKAGES="${REQUIRED_PACKAGES} cryptsetup"

443

APT_INCLUDES="${APT_INCLUDES},cryptsetup,busybox,console-setup,cryptsetup-initramfs"

444

APT_INCLUDES="${APT_INCLUDES},cryptsetup,busybox,console-setup,cryptsetup-initramfs"

444

445

## If cryptfs,dropbear and initramfs are enabled include dropbear-initramfs package

446

## If cryptfs,dropbear and initramfs are enabled include dropbear-initramfs package

446

if [ "$CRYPTFS_DROPBEAR" = true ] && [ "$ENABLE_INITRAMFS" = true ]; then

447

if [ "$CRYPTFS_DROPBEAR" = true ] && [ "$ENABLE_INITRAMFS" = true ]; then

447

APT_INCLUDES="${APT_INCLUDES},dropbear-initramfs"

448

APT_INCLUDES="${APT_INCLUDES},dropbear-initramfs"

448

fi

449

fi

449

450

if [ -z "$CRYPTFS_PASSWORD" ] ; then

451

if [ -z "$CRYPTFS_PASSWORD" ] ; then

451

echo "error: no password defined (CRYPTFS_PASSWORD)!"

452

echo "error: no password defined (CRYPTFS_PASSWORD)!"

452

exit 1

453

exit 1

453

fi

454

fi

454

ENABLE_INITRAMFS=true

455

ENABLE_INITRAMFS=true

455

fi

456

fi

456

457

# Add initramfs generation tools

458

# Add initramfs generation tools

458

if [ "$ENABLE_INITRAMFS" = true ] && [ "$BUILD_KERNEL" = true ] ; then

459

if [ "$ENABLE_INITRAMFS" = true ] && [ "$BUILD_KERNEL" = true ] ; then

459

APT_INCLUDES="${APT_INCLUDES},initramfs-tools"

460

APT_INCLUDES="${APT_INCLUDES},initramfs-tools"

460

fi

461

fi

461

462

# Add device-tree-compiler required for building the U-Boot bootloader

463

# Add device-tree-compiler required for building the U-Boot bootloader

463

if [ "$ENABLE_UBOOT" = true ] ; then

464

if [ "$ENABLE_UBOOT" = true ] ; then

464

APT_INCLUDES="${APT_INCLUDES},device-tree-compiler,bc"

465

APT_INCLUDES="${APT_INCLUDES},device-tree-compiler,bc"

465

fi

466

fi

466

467

if [ "$ENABLE_USBBOOT" = true ] ; then

468

if [ "$ENABLE_USBBOOT" = true ] ; then

468

if [ "$RPI_MODEL" = 0 ] || [ "$RPI_MODEL" = 1P ] || [ "$RPI_MODEL" = 1 ] || [ "$RPI_MODEL" = 2 ]; then

469

if [ "$RPI_MODEL" = 0 ] || [ "$RPI_MODEL" = 1P ] || [ "$RPI_MODEL" = 1 ] || [ "$RPI_MODEL" = 2 ]; then

469

echo "error: Booting from USB alone is only supported by Raspberry Pi 3 and 3P"

470

echo "error: Booting from USB alone is only supported by Raspberry Pi 3 and 3P"

470

exit 1

471

exit 1

471

fi

472

fi

472

fi

473

fi

473

474

# Check if root SSH (v2) public key file exists

475

# Check if root SSH (v2) public key file exists

475

if [ -n "$SSH_ROOT_PUB_KEY" ] ; then

476

if [ -n "$SSH_ROOT_PUB_KEY" ] ; then

476

if [ ! -f "$SSH_ROOT_PUB_KEY" ] ; then

477

if [ ! -f "$SSH_ROOT_PUB_KEY" ] ; then

477

echo "error: '$SSH_ROOT_PUB_KEY' specified SSH public key file not found (SSH_ROOT_PUB_KEY)!"

478

echo "error: '$SSH_ROOT_PUB_KEY' specified SSH public key file not found (SSH_ROOT_PUB_KEY)!"

478

exit 1

479

exit 1

479

fi

480

fi

480

fi

481

fi

481

482

# Check if $USER_NAME SSH (v2) public key file exists

483

# Check if $USER_NAME SSH (v2) public key file exists

483

if [ -n "$SSH_USER_PUB_KEY" ] ; then

484

if [ -n "$SSH_USER_PUB_KEY" ] ; then

484

if [ ! -f "$SSH_USER_PUB_KEY" ] ; then

485

if [ ! -f "$SSH_USER_PUB_KEY" ] ; then

485

echo "error: '$SSH_USER_PUB_KEY' specified SSH public key file not found (SSH_USER_PUB_KEY)!"

486

echo "error: '$SSH_USER_PUB_KEY' specified SSH public key file not found (SSH_USER_PUB_KEY)!"

486

exit 1

487

exit 1

487

fi

488

fi

488

fi

489

fi

489

490

if [ "$ENABLE_NEXMON" = true ] && [ -n "$KERNEL_BRANCH" ] ; then

491

if [ "$ENABLE_NEXMON" = true ] && [ -n "$KERNEL_BRANCH" ] ; then

491

echo "error: Please unset KERNEL_BRANCH if using ENABLE_NEXMON"

492

echo "error: Please unset KERNEL_BRANCH if using ENABLE_NEXMON"

492

exit 1

493

exit 1

493

fi

494

fi

494

495

# Check if all required packages are installed on the build system

496

# Check if all required packages are installed on the build system

496

for package in $REQUIRED_PACKAGES ; do

497

for package in $REQUIRED_PACKAGES ; do

497

if [ "$(dpkg-query -W -f='${Status}' "$package")" != "install ok installed" ] ; then

498

if [ "$(dpkg-query -W -f='${Status}' "$package")" != "install ok installed" ] ; then

498

MISSING_PACKAGES="${MISSING_PACKAGES} $package"

499

MISSING_PACKAGES="${MISSING_PACKAGES} $package"

499

fi

500

fi

500

done

501

done

501

502

# If there are missing packages ask confirmation for install, or exit

503

# If there are missing packages ask confirmation for install, or exit

503

if [ -n "$MISSING_PACKAGES" ] ; then

504

if [ -n "$MISSING_PACKAGES" ] ; then

504

echo "the following packages needed by this script are not installed:"

505

echo "the following packages needed by this script are not installed:"

505

echo "$MISSING_PACKAGES"

506

echo "$MISSING_PACKAGES"

506

507

printf "\ndo you want to install the missing packages right now? [y/n] "

508

printf "\ndo you want to install the missing packages right now? [y/n] "

508

read -r confirm

509

read -r confirm

509

[ "$confirm" != "y" ] && exit 1

510

[ "$confirm" != "y" ] && exit 1

510

511

## Make sure all missing required packages are installed

512

## Make sure all missing required packages are installed

512

apt-get update && apt-get -qq -y install `echo "${MISSING_PACKAGES}" | sed "s/ //"`

513

apt-get update && apt-get -qq -y install `echo "${MISSING_PACKAGES}" | sed "s/ //"`

513

fi

514

fi

514

515

# Check if ./bootstrap.d directory exists

516

# Check if ./bootstrap.d directory exists

516

if [ ! -d "./bootstrap.d/" ] ; then

517

if [ ! -d "./bootstrap.d/" ] ; then

517

echo "error: './bootstrap.d' required directory not found!"

518

echo "error: './bootstrap.d' required directory not found!"

518

exit 1

519

exit 1

519

fi

520

fi

520

521

# Check if ./files directory exists

522

# Check if ./files directory exists

522

if [ ! -d "./files/" ] ; then

523

if [ ! -d "./files/" ] ; then

523

echo "error: './files' required directory not found!"

524

echo "error: './files' required directory not found!"

524

exit 1

525

exit 1

525

fi

526

fi

526

527

# Check if specified KERNELSRC_DIR directory exists

528

# Check if specified KERNELSRC_DIR directory exists

528

if [ -n "$KERNELSRC_DIR" ] && [ ! -d "$KERNELSRC_DIR" ] ; then

529

if [ -n "$KERNELSRC_DIR" ] && [ ! -d "$KERNELSRC_DIR" ] ; then

529

echo "error: '${KERNELSRC_DIR}' specified directory not found (KERNELSRC_DIR)!"

530

echo "error: '${KERNELSRC_DIR}' specified directory not found (KERNELSRC_DIR)!"

530

exit 1

531

exit 1

531

fi

532

fi

532

533

# Check if specified UBOOTSRC_DIR directory exists

534

# Check if specified UBOOTSRC_DIR directory exists

534

if [ -n "$UBOOTSRC_DIR" ] && [ ! -d "$UBOOTSRC_DIR" ] ; then

535

if [ -n "$UBOOTSRC_DIR" ] && [ ! -d "$UBOOTSRC_DIR" ] ; then

535

echo "error: '${UBOOTSRC_DIR}' specified directory not found (UBOOTSRC_DIR)!"

536

echo "error: '${UBOOTSRC_DIR}' specified directory not found (UBOOTSRC_DIR)!"

536

exit 1

537

exit 1

537

fi

538

fi

538

539

# Check if specified VIDEOCORESRC_DIR directory exists

540

# Check if specified VIDEOCORESRC_DIR directory exists

540

if [ -n "$VIDEOCORESRC_DIR" ] && [ ! -d "$VIDEOCORESRC_DIR" ] ; then

541

if [ -n "$VIDEOCORESRC_DIR" ] && [ ! -d "$VIDEOCORESRC_DIR" ] ; then

541

echo "error: '${VIDEOCORESRC_DIR}' specified directory not found (VIDEOCORESRC_DIR)!"

542

echo "error: '${VIDEOCORESRC_DIR}' specified directory not found (VIDEOCORESRC_DIR)!"

542

exit 1

543

exit 1

543

fi

544

fi

544

545

# Check if specified FBTURBOSRC_DIR directory exists

546

# Check if specified FBTURBOSRC_DIR directory exists

546

if [ -n "$FBTURBOSRC_DIR" ] && [ ! -d "$FBTURBOSRC_DIR" ] ; then

547

if [ -n "$FBTURBOSRC_DIR" ] && [ ! -d "$FBTURBOSRC_DIR" ] ; then

547

echo "error: '${FBTURBOSRC_DIR}' specified directory not found (FBTURBOSRC_DIR)!"

548

echo "error: '${FBTURBOSRC_DIR}' specified directory not found (FBTURBOSRC_DIR)!"

548

exit 1

549

exit 1

549

fi

550

fi

550

551

# Check if specified NEXMONSRC_DIR directory exists

552

# Check if specified NEXMONSRC_DIR directory exists

552

if [ -n "$NEXMONSRC_DIR" ] && [ ! -d "$NEXMONSRC_DIR" ] ; then

553

if [ -n "$NEXMONSRC_DIR" ] && [ ! -d "$NEXMONSRC_DIR" ] ; then

553

echo "error: '${NEXMONSRC_DIR}' specified directory not found (NEXMONSRC_DIR)!"

554

echo "error: '${NEXMONSRC_DIR}' specified directory not found (NEXMONSRC_DIR)!"

554

exit 1

555

exit 1

555

fi

556

fi

556

557

# Check if specified CHROOT_SCRIPTS directory exists

558

# Check if specified CHROOT_SCRIPTS directory exists

558

if [ -n "$CHROOT_SCRIPTS" ] && [ ! -d "$CHROOT_SCRIPTS" ] ; then

559

if [ -n "$CHROOT_SCRIPTS" ] && [ ! -d "$CHROOT_SCRIPTS" ] ; then

559

echo "error: ${CHROOT_SCRIPTS} specified directory not found (CHROOT_SCRIPTS)!"

560

echo "error: ${CHROOT_SCRIPTS} specified directory not found (CHROOT_SCRIPTS)!"

560

exit 1

561

exit 1

561

fi

562

fi

562

563

# Check if specified device mapping already exists (will be used by cryptsetup)

564

# Check if specified device mapping already exists (will be used by cryptsetup)

564

if [ -r "/dev/mapping/${CRYPTFS_MAPPING}" ] ; then

565

if [ -r "/dev/mapping/${CRYPTFS_MAPPING}" ] ; then

565

echo "error: mapping /dev/mapping/${CRYPTFS_MAPPING} already exists, not proceeding"

566

echo "error: mapping /dev/mapping/${CRYPTFS_MAPPING} already exists, not proceeding"

566

exit 1

567

exit 1

567

fi

568

fi

568

569

# Don't clobber an old build

570

# Don't clobber an old build

570

if [ -e "$BUILDDIR" ] ; then

571

if [ -e "$BUILDDIR" ] ; then

571

echo "error: directory ${BUILDDIR} already exists, not proceeding"

572

echo "error: directory ${BUILDDIR} already exists, not proceeding"

572

exit 1

573

exit 1

573

fi

574

fi

574

575

# Setup chroot directory

576

# Setup chroot directory

576

mkdir -p "${R}"

577

mkdir -p "${R}"

577

578

# Check if build directory has enough of free disk space >512MB

579

# Check if build directory has enough of free disk space >512MB

579

if [ "$(df --output=avail "${BUILDDIR}" | sed "1d")" -le "524288" ] ; then

580

if [ "$(df --output=avail "${BUILDDIR}" | sed "1d")" -le "524288" ] ; then

580

echo "error: ${BUILDDIR} not enough space left to generate the output image!"

581

echo "error: ${BUILDDIR} not enough space left to generate the output image!"

581

exit 1

582

exit 1

582

fi

583

fi

583

584

set -x

585

set -x

585

586

# Call "cleanup" function on various signals and errors

587

# Call "cleanup" function on various signals and errors

587

trap cleanup 0 1 2 3 6

588

trap cleanup 0 1 2 3 6

588

589

# Add required packages for the minbase installation

590

# Add required packages for the minbase installation

590

if [ "$ENABLE_MINBASE" = true ] ; then

591

if [ "$ENABLE_MINBASE" = true ] ; then

591

APT_INCLUDES="${APT_INCLUDES},vim-tiny,netbase,net-tools,ifupdown"

592

APT_INCLUDES="${APT_INCLUDES},vim-tiny,netbase,net-tools,ifupdown"

592

fi

593

fi

593

594

# Add parted package, required to get partprobe utility

595

# Add parted package, required to get partprobe utility

595

if [ "$EXPANDROOT" = true ] ; then

596

if [ "$EXPANDROOT" = true ] ; then

596

APT_INCLUDES="${APT_INCLUDES},parted"

597

APT_INCLUDES="${APT_INCLUDES},parted"

597

fi

598

fi

598

599

# Add dphys-swapfile package, required to enable swap

600

# Add dphys-swapfile package, required to enable swap

600

if [ "$ENABLE_DPHYSSWAP" = true ] ; then

601

if [ "$ENABLE_DPHYSSWAP" = true ] ; then

601

APT_INCLUDES="${APT_INCLUDES},dphys-swapfile"

602

APT_INCLUDES="${APT_INCLUDES},dphys-swapfile"

602

fi

603

fi

603

604

# Add dbus package, recommended if using systemd

605

# Add dbus package, recommended if using systemd

605

if [ "$ENABLE_DBUS" = true ] ; then

606

if [ "$ENABLE_DBUS" = true ] ; then

606

APT_INCLUDES="${APT_INCLUDES},dbus"

607

APT_INCLUDES="${APT_INCLUDES},dbus"

607

fi

608

fi

608

609

# Add iptables IPv4/IPv6 package

610

# Add iptables IPv4/IPv6 package

610

if [ "$ENABLE_IPTABLES" = true ] ; then

611

if [ "$ENABLE_IPTABLES" = true ] ; then

611

APT_INCLUDES="${APT_INCLUDES},iptables,iptables-persistent"

612

APT_INCLUDES="${APT_INCLUDES},iptables,iptables-persistent"

612

fi

613

fi

613

# Add apparmor for KERNEL_SECURITY

614

# Add apparmor for KERNEL_SECURITY

614

if [ "$KERNEL_SECURITY" = true ] ; then

615

if [ "$KERNEL_SECURITY" = true ] ; then

615

APT_INCLUDES="${APT_INCLUDES},apparmor,apparmor-utils,apparmor-profiles,apparmor-profiles-extra,libapparmor-perl"

616

APT_INCLUDES="${APT_INCLUDES},apparmor,apparmor-utils,apparmor-profiles,apparmor-profiles-extra,libapparmor-perl"

616

fi

617

fi

617

618

# Add openssh server package

619

# Add openssh server package

619

if [ "$SSH_ENABLE" = true ] ; then

620

if [ "$SSH_ENABLE" = true ] ; then

620

APT_INCLUDES="${APT_INCLUDES},openssh-server"

621

APT_INCLUDES="${APT_INCLUDES},openssh-server"

621

fi

622

fi

622

623

# Add alsa-utils package

624

# Add alsa-utils package

624

if [ "$ENABLE_SOUND" = true ] ; then

625

if [ "$ENABLE_SOUND" = true ] ; then

625

APT_INCLUDES="${APT_INCLUDES},alsa-utils"

626

APT_INCLUDES="${APT_INCLUDES},alsa-utils"

626

fi

627

fi

627

628

# Add rng-tools package

629

# Add rng-tools package

629

if [ "$ENABLE_HWRANDOM" = true ] ; then

630

if [ "$ENABLE_HWRANDOM" = true ] ; then

630

APT_INCLUDES="${APT_INCLUDES},rng-tools"

631

APT_INCLUDES="${APT_INCLUDES},rng-tools"

631

fi

632

fi

632

633

# Add fbturbo video driver

634

# Add fbturbo video driver

634

if [ "$ENABLE_FBTURBO" = true ] ; then

635

if [ "$ENABLE_FBTURBO" = true ] ; then

635

# Enable xorg package dependencies

636

# Enable xorg package dependencies

636

ENABLE_XORG=true

637

ENABLE_XORG=true

637

fi

638

fi

638

639

# Add user defined window manager package

640

# Add user defined window manager package

640

if [ -n "$ENABLE_WM" ] ; then

641

if [ -n "$ENABLE_WM" ] ; then

641

APT_INCLUDES="${APT_INCLUDES},${ENABLE_WM}"

642

APT_INCLUDES="${APT_INCLUDES},${ENABLE_WM}"

642

643

# Enable xorg package dependencies

644

# Enable xorg package dependencies

644

ENABLE_XORG=true

645

ENABLE_XORG=true

645

fi

646

fi

646

647

# Add xorg package

648

# Add xorg package

648

if [ "$ENABLE_XORG" = true ] ; then

649

if [ "$ENABLE_XORG" = true ] ; then

649

APT_INCLUDES="${APT_INCLUDES},xorg,dbus-x11"

650

APT_INCLUDES="${APT_INCLUDES},xorg,dbus-x11"

650

fi

651

fi

651

652

# Replace selected packages with smaller clones

653

# Replace selected packages with smaller clones

653

if [ "$ENABLE_REDUCE" = true ] ; then

654

if [ "$ENABLE_REDUCE" = true ] ; then

654

## Add levee package instead of vim-tiny

655

## Add levee package instead of vim-tiny

655

if [ "$REDUCE_VIM" = true ] ; then

656

if [ "$REDUCE_VIM" = true ] ; then

656

APT_INCLUDES="$(echo ${APT_INCLUDES} | sed "s/vim-tiny/levee/")"

657

APT_INCLUDES="$(echo ${APT_INCLUDES} | sed "s/vim-tiny/levee/")"

657

fi

658

fi

658

659

## Add dropbear package instead of openssh-server

660

## Add dropbear package instead of openssh-server

660

if [ "$REDUCE_SSHD" = true ] ; then

661

if [ "$REDUCE_SSHD" = true ] ; then

661

APT_INCLUDES="$(echo "${APT_INCLUDES}" | sed "s/openssh-server/dropbear/")"

662

APT_INCLUDES="$(echo "${APT_INCLUDES}" | sed "s/openssh-server/dropbear/")"

662

fi

663

fi

663

fi

664

fi

664

665

# Configure systemd-sysv exclude to make halt/reboot/shutdown scripts available

666

# Configure systemd-sysv exclude to make halt/reboot/shutdown scripts available

666

if [ "$ENABLE_SYSVINIT" = false ] ; then

667

if [ "$ENABLE_SYSVINIT" = false ] ; then

667

APT_EXCLUDES="--exclude=${APT_EXCLUDES},init,systemd-sysv"

668

APT_EXCLUDES="--exclude=${APT_EXCLUDES},init,systemd-sysv"

668

fi

669

fi

669

670

# Configure kernel sources if no KERNELSRC_DIR

671

# Configure kernel sources if no KERNELSRC_DIR

671

if [ "$BUILD_KERNEL" = true ] && [ -z "$KERNELSRC_DIR" ] ; then

672

if [ "$BUILD_KERNEL" = true ] && [ -z "$KERNELSRC_DIR" ] ; then

672

KERNELSRC_CONFIG=true

673

KERNELSRC_CONFIG=true

673

fi

674

fi

674

675

# Configure reduced kernel

676

# Configure reduced kernel

676

if [ "$KERNEL_REDUCE" = true ] ; then

677

if [ "$KERNEL_REDUCE" = true ] ; then

677

KERNELSRC_CONFIG=false

678

KERNELSRC_CONFIG=false

678

fi

679

fi

679

680

# Configure qemu compatible kernel

681

# Configure qemu compatible kernel

681

if [ "$ENABLE_QEMU" = true ] ; then

682

if [ "$ENABLE_QEMU" = true ] ; then

682

DTB_FILE=vexpress-v2p-ca15_a7.dtb

683

DTB_FILE=vexpress-v2p-ca15_a7.dtb

683

UBOOT_CONFIG=vexpress_ca15_tc2_defconfig

684

UBOOT_CONFIG=vexpress_ca15_tc2_defconfig

684

KERNEL_DEFCONFIG="vexpress_defconfig"

685

KERNEL_DEFCONFIG="vexpress_defconfig"

685

if [ "$KERNEL_MENUCONFIG" = false ] ; then

686

if [ "$KERNEL_MENUCONFIG" = false ] ; then

686

KERNEL_OLDDEFCONFIG=true

687

KERNEL_OLDDEFCONFIG=true

687

fi

688

fi

688

fi

689

fi

689

690

# Execute bootstrap scripts

691

# Execute bootstrap scripts

691

for SCRIPT in bootstrap.d/*.sh; do

692

for SCRIPT in bootstrap.d/*.sh; do

692

head -n 3 "$SCRIPT"

693

head -n 3 "$SCRIPT"

693

. "$SCRIPT"

694

. "$SCRIPT"

694

done

695

done

695

696

## Execute custom bootstrap scripts

697

## Execute custom bootstrap scripts

697

if [ -d "custom.d" ] ; then

698

if [ -d "custom.d" ] ; then

698

for SCRIPT in custom.d/*.sh; do

699

for SCRIPT in custom.d/*.sh; do

699

. "$SCRIPT"

700

. "$SCRIPT"

700

done

701

done

701

fi

702

fi

702

703

# Execute custom scripts inside the chroot

704

# Execute custom scripts inside the chroot

704

if [ -n "$CHROOT_SCRIPTS" ] && [ -d "$CHROOT_SCRIPTS" ] ; then

705

if [ -n "$CHROOT_SCRIPTS" ] && [ -d "$CHROOT_SCRIPTS" ] ; then

705

cp -r "${CHROOT_SCRIPTS}" "${R}/chroot_scripts"

706

cp -r "${CHROOT_SCRIPTS}" "${R}/chroot_scripts"

706

chroot_exec /bin/bash -x << EOF

707

chroot_exec /bin/bash -x << EOF

707

for SCRIPT in /chroot_scripts/* ; do

708

for SCRIPT in /chroot_scripts/* ; do

708

if [ -f $SCRIPT -a -x $SCRIPT ] ; then

709

if [ -f $SCRIPT -a -x $SCRIPT ] ; then

709

$SCRIPT

710

$SCRIPT

710

fi

711

fi

711

done

712

done

712

EOF

713

EOF

713

rm -rf "${R}/chroot_scripts"

714

rm -rf "${R}/chroot_scripts"

714

fi

715

fi

715

716

# Remove c/c++ build environment from the chroot

717

# Remove c/c++ build environment from the chroot

717

chroot_remove_cc

718

chroot_remove_cc

718

719

# Generate required machine-id

720

# Generate required machine-id

720

MACHINE_ID=$(dbus-uuidgen)

721

MACHINE_ID=$(dbus-uuidgen)

721

echo -n "${MACHINE_ID}" > "${R}/var/lib/dbus/machine-id"

722

echo -n "${MACHINE_ID}" > "${R}/var/lib/dbus/machine-id"

722

echo -n "${MACHINE_ID}" > "${ETC_DIR}/machine-id"

723

echo -n "${MACHINE_ID}" > "${ETC_DIR}/machine-id"

723

724

# APT Cleanup

725

# APT Cleanup

725

chroot_exec apt-get -y clean

726

chroot_exec apt-get -y clean

726

chroot_exec apt-get -y autoclean

727

chroot_exec apt-get -y autoclean

727

chroot_exec apt-get -y autoremove

728

chroot_exec apt-get -y autoremove

728

729

# Unmount mounted filesystems

730

# Unmount mounted filesystems

730

umount -l "${R}/proc"

731

umount -l "${R}/proc"

731

umount -l "${R}/sys"

732

umount -l "${R}/sys"

732

733

# Clean up directories

734

# Clean up directories

734

rm -rf "${R}/run/*"

735

rm -rf "${R}/run/*"

735

rm -rf "${R}/tmp/*"

736

rm -rf "${R}/tmp/*"

736

737

# Clean up APT proxy settings

738

# Clean up APT proxy settings

738

if [ "$KEEP_APT_PROXY" = false ] ; then

739

if [ "$KEEP_APT_PROXY" = false ] ; then

739

rm -f "${ETC_DIR}/apt/apt.conf.d/10proxy"

740

rm -f "${ETC_DIR}/apt/apt.conf.d/10proxy"

740

fi

741

fi

741

742

# Clean up files

743

# Clean up files

743

rm -f "${ETC_DIR}/ssh/ssh_host_*"

744

rm -f "${ETC_DIR}/ssh/ssh_host_*"

744

rm -f "${ETC_DIR}/dropbear/dropbear_*"

745

rm -f "${ETC_DIR}/dropbear/dropbear_*"

745

rm -f "${ETC_DIR}/apt/sources.list.save"

746

rm -f "${ETC_DIR}/apt/sources.list.save"

746

rm -f "${ETC_DIR}/resolvconf/resolv.conf.d/original"

747

rm -f "${ETC_DIR}/resolvconf/resolv.conf.d/original"

747

rm -f "${ETC_DIR}/*-"

748

rm -f "${ETC_DIR}/*-"

748

rm -f "${ETC_DIR}/resolv.conf"

749

rm -f "${ETC_DIR}/resolv.conf"

749

rm -f "${R}/root/.bash_history"

750

rm -f "${R}/root/.bash_history"

750

rm -f "${R}/var/lib/urandom/random-seed"

751

rm -f "${R}/var/lib/urandom/random-seed"

751

rm -f "${R}/initrd.img"

752

rm -f "${R}/initrd.img"

752

rm -f "${R}/vmlinuz"

753

rm -f "${R}/vmlinuz"

753

rm -f "${R}${QEMU_BINARY}"

754

rm -f "${R}${QEMU_BINARY}"

754

755

if [ "$ENABLE_QEMU" = true ] ; then

756

if [ "$ENABLE_QEMU" = true ] ; then

756

# Setup QEMU directory

757

# Setup QEMU directory

757

mkdir "${BASEDIR}/qemu"

758

mkdir "${BASEDIR}/qemu"

758

759

# Copy kernel image to QEMU directory

760

# Copy kernel image to QEMU directory

760

install_readonly "${BOOT_DIR}/${KERNEL_IMAGE}" "${BASEDIR}/qemu/${KERNEL_IMAGE}"

761

install_readonly "${BOOT_DIR}/${KERNEL_IMAGE}" "${BASEDIR}/qemu/${KERNEL_IMAGE}"

761

762

# Copy kernel config to QEMU directory

763

# Copy kernel config to QEMU directory

763

install_readonly "${R}/boot/config-${KERNEL_VERSION}" "${BASEDIR}/qemu/config-${KERNEL_VERSION}"

764

install_readonly "${R}/boot/config-${KERNEL_VERSION}" "${BASEDIR}/qemu/config-${KERNEL_VERSION}"

764

765

# Copy kernel dtbs to QEMU directory

766

# Copy kernel dtbs to QEMU directory

766

for dtb in "${BOOT_DIR}/"*.dtb ; do

767

for dtb in "${BOOT_DIR}/"*.dtb ; do

767

if [ -f "${dtb}" ] ; then

768

if [ -f "${dtb}" ] ; then

768

install_readonly "${dtb}" "${BASEDIR}/qemu/"

769

install_readonly "${dtb}" "${BASEDIR}/qemu/"

769

fi

770

fi

770

done

771

done

771

772

# Copy kernel overlays to QEMU directory

773

# Copy kernel overlays to QEMU directory

773

if [ -d "${BOOT_DIR}/overlays" ] ; then

774

if [ -d "${BOOT_DIR}/overlays" ] ; then

774

# Setup overlays dtbs directory

775

# Setup overlays dtbs directory

775

mkdir "${BASEDIR}/qemu/overlays"

776

mkdir "${BASEDIR}/qemu/overlays"

776

777

for dtb in "${BOOT_DIR}/overlays/"*.dtbo ; do

778

for dtb in "${BOOT_DIR}/overlays/"*.dtbo ; do

778

if [ -f "${dtb}" ] ; then

779

if [ -f "${dtb}" ] ; then

779

install_readonly "${dtb}" "${BASEDIR}/qemu/overlays/"

780

install_readonly "${dtb}" "${BASEDIR}/qemu/overlays/"

780

fi

781

fi

781

done

782

done

782

fi

783

fi

783

784

# Copy u-boot files to QEMU directory

785

# Copy u-boot files to QEMU directory

785

if [ "$ENABLE_UBOOT" = true ] ; then

786

if [ "$ENABLE_UBOOT" = true ] ; then

786

if [ -f "${BOOT_DIR}/u-boot.bin" ] ; then

787

if [ -f "${BOOT_DIR}/u-boot.bin" ] ; then

787

install_readonly "${BOOT_DIR}/u-boot.bin" "${BASEDIR}/qemu/u-boot.bin"

788

install_readonly "${BOOT_DIR}/u-boot.bin" "${BASEDIR}/qemu/u-boot.bin"

788

fi

789

fi

789

if [ -f "${BOOT_DIR}/uboot.mkimage" ] ; then

790

if [ -f "${BOOT_DIR}/uboot.mkimage" ] ; then

790

install_readonly "${BOOT_DIR}/uboot.mkimage" "${BASEDIR}/qemu/uboot.mkimage"

791

install_readonly "${BOOT_DIR}/uboot.mkimage" "${BASEDIR}/qemu/uboot.mkimage"

791

fi

792

fi

792

if [ -f "${BOOT_DIR}/boot.scr" ] ; then

793

if [ -f "${BOOT_DIR}/boot.scr" ] ; then

793

install_readonly "${BOOT_DIR}/boot.scr" "${BASEDIR}/qemu/boot.scr"

794

install_readonly "${BOOT_DIR}/boot.scr" "${BASEDIR}/qemu/boot.scr"

794

fi

795

fi

795

fi

796

fi

796

797

# Copy initramfs to QEMU directory

798

# Copy initramfs to QEMU directory

798

if [ -f "${BOOT_DIR}/initramfs-${KERNEL_VERSION}" ] ; then

799

if [ -f "${BOOT_DIR}/initramfs-${KERNEL_VERSION}" ] ; then

799

install_readonly "${BOOT_DIR}/initramfs-${KERNEL_VERSION}" "${BASEDIR}/qemu/initramfs-${KERNEL_VERSION}"

800

install_readonly "${BOOT_DIR}/initramfs-${KERNEL_VERSION}" "${BASEDIR}/qemu/initramfs-${KERNEL_VERSION}"

800

fi

801

fi

801

fi

802

fi

802

803

# Calculate size of the chroot directory in KB

804

# Calculate size of the chroot directory in KB

804

CHROOT_SIZE=$(expr "$(du -s "${R}" | awk '{ print $1 }')")

805

CHROOT_SIZE=$(expr "$(du -s "${R}" | awk '{ print $1 }')")

805

806

# Calculate the amount of needed 512 Byte sectors

807

# Calculate the amount of needed 512 Byte sectors

807

TABLE_SECTORS=$(expr 1 \* 1024 \* 1024 \/ 512)

808

TABLE_SECTORS=$(expr 1 \* 1024 \* 1024 \/ 512)

808

FRMW_SECTORS=$(expr 64 \* 1024 \* 1024 \/ 512)

809

FRMW_SECTORS=$(expr 64 \* 1024 \* 1024 \/ 512)

809

ROOT_OFFSET=$(expr "${TABLE_SECTORS}" + "${FRMW_SECTORS}")

810

ROOT_OFFSET=$(expr "${TABLE_SECTORS}" + "${FRMW_SECTORS}")

810

811

# The root partition is EXT4

812

# The root partition is EXT4

812

# This means more space than the actual used space of the chroot is used.

813

# This means more space than the actual used space of the chroot is used.

813

# As overhead for journaling and reserved blocks 35% are added.

814

# As overhead for journaling and reserved blocks 35% are added.

814

ROOT_SECTORS=$(expr "$(expr "${CHROOT_SIZE}" + "${CHROOT_SIZE}" \/ 100 \* 35)" \* 1024 \/ 512)

815

ROOT_SECTORS=$(expr "$(expr "${CHROOT_SIZE}" + "${CHROOT_SIZE}" \/ 100 \* 35)" \* 1024 \/ 512)

815

816

# Calculate required image size in 512 Byte sectors

817

# Calculate required image size in 512 Byte sectors

817

IMAGE_SECTORS=$(expr "${TABLE_SECTORS}" + "${FRMW_SECTORS}" + "${ROOT_SECTORS}")

818

IMAGE_SECTORS=$(expr "${TABLE_SECTORS}" + "${FRMW_SECTORS}" + "${ROOT_SECTORS}")

818

819

# Prepare image file

820

# Prepare image file

820

if [ "$ENABLE_SPLITFS" = true ] ; then

821

if [ "$ENABLE_SPLITFS" = true ] ; then

821

dd if=/dev/zero of="$IMAGE_NAME-frmw.img" bs=512 count="${TABLE_SECTORS}"

822

dd if=/dev/zero of="$IMAGE_NAME-frmw.img" bs=512 count="${TABLE_SECTORS}"

822

dd if=/dev/zero of="$IMAGE_NAME-frmw.img" bs=512 count=0 seek="${FRMW_SECTORS}"

823

dd if=/dev/zero of="$IMAGE_NAME-frmw.img" bs=512 count=0 seek="${FRMW_SECTORS}"

823

dd if=/dev/zero of="$IMAGE_NAME-root.img" bs=512 count="${TABLE_SECTORS}"

824

dd if=/dev/zero of="$IMAGE_NAME-root.img" bs=512 count="${TABLE_SECTORS}"

824

dd if=/dev/zero of="$IMAGE_NAME-root.img" bs=512 count=0 seek="${ROOT_SECTORS}"

825

dd if=/dev/zero of="$IMAGE_NAME-root.img" bs=512 count=0 seek="${ROOT_SECTORS}"

825

826

# Write firmware/boot partition tables

827

# Write firmware/boot partition tables

827

sfdisk -q -L -uS -f "$IMAGE_NAME-frmw.img" 2> /dev/null << EOM

828

sfdisk -q -L -uS -f "$IMAGE_NAME-frmw.img" 2> /dev/null << EOM

828

${TABLE_SECTORS},${FRMW_SECTORS},c,*

829

${TABLE_SECTORS},${FRMW_SECTORS},c,*

829

EOM

830

EOM

830

831

# Write root partition table

832

# Write root partition table

832

sfdisk -q -L -uS -f "$IMAGE_NAME-root.img" 2> /dev/null << EOM

833

sfdisk -q -L -uS -f "$IMAGE_NAME-root.img" 2> /dev/null << EOM

833

${TABLE_SECTORS},${ROOT_SECTORS},83

834

${TABLE_SECTORS},${ROOT_SECTORS},83

834

EOM

835

EOM

835

836

# Setup temporary loop devices

837

# Setup temporary loop devices

837

FRMW_LOOP="$(losetup -o 1M --sizelimit 64M -f --show "$IMAGE_NAME"-frmw.img)"

838

FRMW_LOOP="$(losetup -o 1M --sizelimit 64M -f --show "$IMAGE_NAME"-frmw.img)"

838

ROOT_LOOP="$(losetup -o 1M -f --show "$IMAGE_NAME"-root.img)"

839

ROOT_LOOP="$(losetup -o 1M -f --show "$IMAGE_NAME"-root.img)"

839

else # ENABLE_SPLITFS=false

840

else # ENABLE_SPLITFS=false

840

dd if=/dev/zero of="$IMAGE_NAME.img" bs=512 count="${TABLE_SECTORS}"

841

dd if=/dev/zero of="$IMAGE_NAME.img" bs=512 count="${TABLE_SECTORS}"

841

dd if=/dev/zero of="$IMAGE_NAME.img" bs=512 count=0 seek="${IMAGE_SECTORS}"

842

dd if=/dev/zero of="$IMAGE_NAME.img" bs=512 count=0 seek="${IMAGE_SECTORS}"

842

843

# Write partition table

844

# Write partition table

844

sfdisk -q -L -uS -f "$IMAGE_NAME.img" 2> /dev/null << EOM

845

sfdisk -q -L -uS -f "$IMAGE_NAME.img" 2> /dev/null << EOM

845

${TABLE_SECTORS},${FRMW_SECTORS},c,*

846

${TABLE_SECTORS},${FRMW_SECTORS},c,*

846

${ROOT_OFFSET},${ROOT_SECTORS},83

847

${ROOT_OFFSET},${ROOT_SECTORS},83

847

EOM

848

EOM

848

849

# Setup temporary loop devices

850

# Setup temporary loop devices

850

FRMW_LOOP="$(losetup -o 1M --sizelimit 64M -f --show "$IMAGE_NAME".img)"

851

FRMW_LOOP="$(losetup -o 1M --sizelimit 64M -f --show "$IMAGE_NAME".img)"

851

ROOT_LOOP="$(losetup -o 65M -f --show "$IMAGE_NAME".img)"

852

ROOT_LOOP="$(losetup -o 65M -f --show "$IMAGE_NAME".img)"

852

fi

853

fi

853

854

if [ "$ENABLE_CRYPTFS" = true ] ; then

855

if [ "$ENABLE_CRYPTFS" = true ] ; then

855

# Create dummy ext4 fs

856

# Create dummy ext4 fs

856

mkfs.ext4 "$ROOT_LOOP"

857

mkfs.ext4 "$ROOT_LOOP"

857

858

# Setup password keyfile

859

# Setup password keyfile

859

touch .password

860

touch .password

860

chmod 600 .password

861

chmod 600 .password

861

echo -n ${CRYPTFS_PASSWORD} > .password

862

echo -n ${CRYPTFS_PASSWORD} > .password

862

863

# Initialize encrypted partition

864

# Initialize encrypted partition

864

cryptsetup --verbose --debug -q luksFormat "${ROOT_LOOP}" -c "${CRYPTFS_CIPHER}" -h "${CRYPTFS_HASH}" -s "${CRYPTFS_XTSKEYSIZE}" .password

865

cryptsetup --verbose --debug -q luksFormat "${ROOT_LOOP}" -c "${CRYPTFS_CIPHER}" -h "${CRYPTFS_HASH}" -s "${CRYPTFS_XTSKEYSIZE}" .password

865

866

# Open encrypted partition and setup mapping

867

# Open encrypted partition and setup mapping

867

cryptsetup luksOpen "${ROOT_LOOP}" -d .password "${CRYPTFS_MAPPING}"

868

cryptsetup luksOpen "${ROOT_LOOP}" -d .password "${CRYPTFS_MAPPING}"

868

869

# Secure delete password keyfile

870

# Secure delete password keyfile

870

shred -zu .password

871

shred -zu .password

871

872

# Update temporary loop device

873

# Update temporary loop device

873

ROOT_LOOP="/dev/mapper/${CRYPTFS_MAPPING}"

874

ROOT_LOOP="/dev/mapper/${CRYPTFS_MAPPING}"

874

875

# Wipe encrypted partition (encryption cipher is used for randomness)

876

# Wipe encrypted partition (encryption cipher is used for randomness)

876

dd if=/dev/zero of="${ROOT_LOOP}" bs=512 count="$(blockdev --getsz "${ROOT_LOOP}")"

877

dd if=/dev/zero of="${ROOT_LOOP}" bs=512 count="$(blockdev --getsz "${ROOT_LOOP}")"

877

fi

878

fi

878

879

# Build filesystems

880

# Build filesystems

880

mkfs.vfat "$FRMW_LOOP"

881

mkfs.vfat "$FRMW_LOOP"

881

mkfs.ext4 "$ROOT_LOOP"

882

mkfs.ext4 "$ROOT_LOOP"

882

883

# Mount the temporary loop devices

884

# Mount the temporary loop devices

884

mkdir -p "$BUILDDIR/mount"

885

mkdir -p "$BUILDDIR/mount"

885

mount "$ROOT_LOOP" "$BUILDDIR/mount"

886

mount "$ROOT_LOOP" "$BUILDDIR/mount"

886

887

mkdir -p "$BUILDDIR/mount/boot/firmware"

888

mkdir -p "$BUILDDIR/mount/boot/firmware"

888

mount "$FRMW_LOOP" "$BUILDDIR/mount/boot/firmware"

889

mount "$FRMW_LOOP" "$BUILDDIR/mount/boot/firmware"

889

890

# Copy all files from the chroot to the loop device mount point directory

891

# Copy all files from the chroot to the loop device mount point directory

891

rsync -a "${R}/" "$BUILDDIR/mount/"

892

rsync -a "${R}/" "$BUILDDIR/mount/"

892

893

# Unmount all temporary loop devices and mount points

894

# Unmount all temporary loop devices and mount points

894

cleanup

895

cleanup

895

896

# Create block map file(s) of image(s)

897

# Create block map file(s) of image(s)

897

if [ "$ENABLE_SPLITFS" = true ] ; then

898

if [ "$ENABLE_SPLITFS" = true ] ; then

898

# Create block map files for "bmaptool"

899

# Create block map files for "bmaptool"

899

bmaptool create -o "$IMAGE_NAME-frmw.bmap" "$IMAGE_NAME-frmw.img"

900

bmaptool create -o "$IMAGE_NAME-frmw.bmap" "$IMAGE_NAME-frmw.img"

900

bmaptool create -o "$IMAGE_NAME-root.bmap" "$IMAGE_NAME-root.img"

901

bmaptool create -o "$IMAGE_NAME-root.bmap" "$IMAGE_NAME-root.img"

901

902

# Image was successfully created

903

# Image was successfully created

903

echo "$IMAGE_NAME-frmw.img ($(expr $ "${TABLE_SECTORS}" + "${FRMW_SECTORS}" $ \* 512 \/ 1024 \/ 1024)M)" ": successfully created"

904

echo "$IMAGE_NAME-frmw.img ($(expr $ "${TABLE_SECTORS}" + "${FRMW_SECTORS}" $ \* 512 \/ 1024 \/ 1024)M)" ": successfully created"

904

echo "$IMAGE_NAME-root.img ($(expr $ "${TABLE_SECTORS}" + "${ROOT_SECTORS}" $ \* 512 \/ 1024 \/ 1024)M)" ": successfully created"

905

echo "$IMAGE_NAME-root.img ($(expr $ "${TABLE_SECTORS}" + "${ROOT_SECTORS}" $ \* 512 \/ 1024 \/ 1024)M)" ": successfully created"

905

else

906

else

906

# Create block map file for "bmaptool"

907

# Create block map file for "bmaptool"

907

bmaptool create -o "$IMAGE_NAME.bmap" "$IMAGE_NAME.img"

908

bmaptool create -o "$IMAGE_NAME.bmap" "$IMAGE_NAME.img"

908

909

# Image was successfully created

910

# Image was successfully created

910

echo "$IMAGE_NAME.img ($(expr $ "${TABLE_SECTORS}" + "${FRMW_SECTORS}" + "${ROOT_SECTORS}" $ \* 512 \/ 1024 \/ 1024)M)" ": successfully created"

911

echo "$IMAGE_NAME.img ($(expr $ "${TABLE_SECTORS}" + "${FRMW_SECTORS}" + "${ROOT_SECTORS}" $ \* 512 \/ 1024 \/ 1024)M)" ": successfully created"

911

912

# Create qemu qcow2 image

913

# Create qemu qcow2 image

913

if [ "$ENABLE_QEMU" = true ] ; then

914

if [ "$ENABLE_QEMU" = true ] ; then

914

QEMU_IMAGE=${QEMU_IMAGE:=${BASEDIR}/qemu/${DATE}-${KERNEL_ARCH}-CURRENT-rpi${RPI_MODEL}-${RELEASE}-${RELEASE_ARCH}}

915

QEMU_IMAGE=${QEMU_IMAGE:=${BASEDIR}/qemu/${DATE}-${KERNEL_ARCH}-CURRENT-rpi${RPI_MODEL}-${RELEASE}-${RELEASE_ARCH}}

915

QEMU_SIZE=16G

916

QEMU_SIZE=16G

916

917

qemu-img convert -f raw -O qcow2 "$IMAGE_NAME".img "$QEMU_IMAGE".qcow2

918

qemu-img convert -f raw -O qcow2 "$IMAGE_NAME".img "$QEMU_IMAGE".qcow2

918

qemu-img resize "$QEMU_IMAGE".qcow2 $QEMU_SIZE

919

qemu-img resize "$QEMU_IMAGE".qcow2 $QEMU_SIZE

919

920

echo "$QEMU_IMAGE.qcow2 ($QEMU_SIZE)" ": successfully created"

921

echo "$QEMU_IMAGE.qcow2 ($QEMU_SIZE)" ": successfully created"

921

fi

922

fi

922

fi

923

fi

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             #
             # Setup RPi2/3/4 config and cmdline
             #
             # Load utility functions
             . ./functions.sh
             if [ -n "$RPI_FIRMWARE_DIR" ] && [ -d "$RPI_FIRMWARE_DIR" ] ; then
               # Install boot binaries from local directory
               cp "${RPI_FIRMWARE_DIR}"/boot/bootcode.bin "${BOOT_DIR}"/bootcode.bin
               cp "${RPI_FIRMWARE_DIR}"/boot/fixup.dat "${BOOT_DIR}"/fixup.dat
               cp "${RPI_FIRMWARE_DIR}"/boot/fixup_cd.dat "${BOOT_DIR}"/fixup_cd.dat
               cp "${RPI_FIRMWARE_DIR}"/boot/fixup_x.dat "${BOOT_DIR}"/fixup_x.dat
               cp "${RPI_FIRMWARE_DIR}"/boot/start.elf "${BOOT_DIR}"/start.elf
               cp "${RPI_FIRMWARE_DIR}"/boot/start_cd.elf "${BOOT_DIR}"/start_cd.elf
               cp "${RPI_FIRMWARE_DIR}"/boot/start_x.elf "${BOOT_DIR}"/start_x.elf
               cp "${RPI_FIRMWARE_DIR}"/boot/fixup4cd.dat "${BOOT_DIR}"/fixup4cd.dat
               cp "${RPI_FIRMWARE_DIR}"/boot/fixup4.dat "${BOOT_DIR}"/fixup4.dat
               cp "${RPI_FIRMWARE_DIR}"/boot/fixup4db.dat "${BOOT_DIR}"/fixup4db.dat
               cp "${RPI_FIRMWARE_DIR}"/boot/fixup4x.dat "${BOOT_DIR}"/fixup4x.dat
               cp "${RPI_FIRMWARE_DIR}"/boot/start4cd.elf "${BOOT_DIR}"/start4cd.elf
               cp "${RPI_FIRMWARE_DIR}"/boot/start4db.elf "${BOOT_DIR}"/start4db.elf
               cp "${RPI_FIRMWARE_DIR}"/boot/start4.elf "${BOOT_DIR}"/start4.elf
               cp "${RPI_FIRMWARE_DIR}"/boot/start4x.elf "${BOOT_DIR}"/start4x.elf
             else
               # Create temporary directory for boot binaries
               temp_dir=$(as_nobody mktemp -d)
               # Install latest boot binaries from raspberry/firmware github
               as_nobody wget -q -O "${temp_dir}/bootcode.bin" "${FIRMWARE_URL}/bootcode.bin"
               as_nobody wget -q -O "${temp_dir}/fixup.dat" "${FIRMWARE_URL}/fixup.dat"
               as_nobody wget -q -O "${temp_dir}/fixup_cd.dat" "${FIRMWARE_URL}/fixup_cd.dat"
               as_nobody wget -q -O "${temp_dir}/fixup_x.dat" "${FIRMWARE_URL}/fixup_x.dat"
               as_nobody wget -q -O "${temp_dir}/start.elf" "${FIRMWARE_URL}/start.elf"
               as_nobody wget -q -O "${temp_dir}/start_cd.elf" "${FIRMWARE_URL}/start_cd.elf"
               as_nobody wget -q -O "${temp_dir}/start_x.elf" "${FIRMWARE_URL}/start_x.elf"
               as_nobody wget -q -O "${temp_dir}/fixup4cd.dat" "${FIRMWARE_URL}/fixup4cd.dat"
               as_nobody wget -q -O "${temp_dir}/fixup4.dat" "${FIRMWARE_URL}/fixup4.dat"
               as_nobody wget -q -O "${temp_dir}/fixup4db.dat" "${FIRMWARE_URL}/fixup4db.dat"
               as_nobody wget -q -O "${temp_dir}/fixup4x.dat" "${FIRMWARE_URL}/fixup4x.dat"
               as_nobody wget -q -O "${temp_dir}/start4cd.elf" "${FIRMWARE_URL}/start4cd.elf"
               as_nobody wget -q -O "${temp_dir}/start4db.elf" "${FIRMWARE_URL}/start4db.elf"
               as_nobody wget -q -O "${temp_dir}/start4.elf" "${FIRMWARE_URL}/start4.elf"
               as_nobody wget -q -O "${temp_dir}/start4x.elf" "${FIRMWARE_URL}/start4x.elf"
               # Move downloaded boot binaries
               mv "${temp_dir}/"* "${BOOT_DIR}/"
               # Remove temporary directory for boot binaries
               rm -fr "${temp_dir}"
               # Set permissions of the boot binaries
               chown -R root:root "${BOOT_DIR}"
               chmod -R 600 "${BOOT_DIR}"
             fi
             # Setup firmware boot cmdline
             if [ "$ENABLE_USBBOOT" = true ] ; then
               CMDLINE="dwc_otg.lpm_enable=0 root=/dev/sda2 rootfstype=ext4 rootflags=commit=100,data=writeback elevator=deadline console=tty1 rootwait init=/bin/systemd"
             else
               if [ "$ENABLE_SPLITFS" = true ] ; then
                 CMDLINE="dwc_otg.lpm_enable=0 root=/dev/sda1 rootfstype=ext4 rootflags=commit=100,data=writeback elevator=deadline console=tty1 rootwait init=/bin/systemd"
               else
                 CMDLINE="dwc_otg.lpm_enable=0 root=/dev/mmcblk0p2 rootfstype=ext4 rootflags=commit=100,data=writeback elevator=deadline console=tty1 rootwait init=/bin/systemd"
               fi
             fi
             # Add encrypted root partition to cmdline.txt
             if [ "$ENABLE_CRYPTFS" = true ] ; then
               if [ "$ENABLE_SPLITFS" = true ] ; then
                 CMDLINE=$(echo "${CMDLINE}" | sed "s/sda1/mapper\/${CRYPTFS_MAPPING} cryptdevice=\/dev\/sda1:${CRYPTFS_MAPPING}/")
               else
                 if [ "$ENABLE_USBBOOT" = true ] ; then
                   CMDLINE=$(echo "${CMDLINE}" | sed "s/sda2/mapper\/${CRYPTFS_MAPPING} cryptdevice=\/dev\/sda2:${CRYPTFS_MAPPING}/")
                 else
                   CMDLINE=$(echo "${CMDLINE}" | sed "s/mmcblk0p2/mapper\/${CRYPTFS_MAPPING} cryptdevice=\/dev\/mmcblk0p2:${CRYPTFS_MAPPING}/")
                 fi
               fi
             fi
             # Enable Kernel messages on standard output
             if [ "$ENABLE_PRINTK" = true ] ; then
               install_readonly files/sysctl.d/83-rpi-printk.conf "${ETC_DIR}/sysctl.d/83-rpi-printk.conf"
             fi
             # Enable Kernel messages on standard output
             if [ "$KERNEL_SECURITY" = true ] ; then
               install_readonly files/sysctl.d/84-rpi-ASLR.conf "${ETC_DIR}/sysctl.d/84-rpi-ASLR.conf"
             fi
             # Install udev rule for serial alias - serial0 = console serial1=bluetooth
             install_readonly files/etc/99-com.rules "${LIB_DIR}/udev/rules.d/99-com.rules"
             # Remove IPv6 networking support
             if [ "$ENABLE_IPV6" = false ] ; then
               CMDLINE="${CMDLINE} ipv6.disable=1"
             fi
             # Automatically assign predictable network interface names
             if [ "$ENABLE_IFNAMES" = false ] ; then
               CMDLINE="${CMDLINE} net.ifnames=0"
             else
               CMDLINE="${CMDLINE} net.ifnames=1"
             fi
             # Disable Raspberry Pi console logo
             if [ "$ENABLE_LOGO" = false ] ; then
               CMDLINE="${CMDLINE} logo.nologo"
             fi
             # Strictly limit verbosity of boot up console messages
             if [ "$ENABLE_SILENT_BOOT" = true ] ; then
               CMDLINE="${CMDLINE} quiet loglevel=0 rd.systemd.show_status=auto rd.udev.log_priority=0"
             fi
             # Install firmware config
             install_readonly files/boot/config.txt "${BOOT_DIR}/config.txt"
             # Disable Raspberry Pi console logo
             if [ "$ENABLE_SPLASH" = false ] ; then
               echo "disable_splash=1" >> "${BOOT_DIR}/config.txt"
             fi
             # Locks CPU frequency at maximum
             if [ "$ENABLE_TURBO" = true ] ; then
               echo "force_turbo=1" >> "${BOOT_DIR}/config.txt"
               # helps to avoid sdcard corruption when force_turbo is enabled.
               echo "boot_delay=1" >> "${BOOT_DIR}/config.txt"
             fi
             if [ "$RPI_MODEL" = 0 ] || [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] || [ "$RPI_MODEL" = 4 ]; then
               # Bluetooth enabled
               if [ "$ENABLE_BLUETOOTH" = true ] ; then
                 # Create temporary directory for Bluetooth sources
                 temp_dir=$(as_nobody mktemp -d)
                 # Fetch Bluetooth sources
                 as_nobody git -C "${temp_dir}" clone "${BLUETOOTH_URL}"
                 # Copy downloaded sources
                 mv "${temp_dir}/pi-bluetooth" "${R}/tmp/"
                 # Set permissions
                 chown -R root:root "${R}/tmp/pi-bluetooth"
                 # Bluetooth firmware from arch aur https://aur.archlinux.org/packages/pi-bluetooth/
                 wget -q -O "${R}/tmp/pi-bluetooth/LICENCE.broadcom_bcm43xx" https://aur.archlinux.org/cgit/aur.git/plain/LICENCE.broadcom_bcm43xx?h=pi-bluetooth
                 wget -q -O "${R}/tmp/pi-bluetooth/BCM43430A1.hcd" https://raw.githubusercontent.com/RPi-Distro/bluez-firmware/master/broadcom/BCM43430A1.hcd
                 # Install tools
                 install_readonly "${R}/tmp/pi-bluetooth/usr/bin/btuart" "${R}/usr/bin/btuart"
                 install_readonly "${R}/tmp/pi-bluetooth/usr/bin/bthelper" "${R}/usr/bin/bthelper"
             	# make scripts executable
             	chmod +x "${R}/usr/bin/bthelper"
             	chmod +x "${R}/usr/bin/btuart"
                 # Install bluetooth udev rule
                 install_readonly "${R}/tmp/pi-bluetooth/lib/udev/rules.d/90-pi-bluetooth.rules" "${LIB_DIR}/udev/rules.d/90-pi-bluetooth.rules"
                 # Install Firmware Flash file and apropiate licence
                 mkdir -p "$BLUETOOTH_FIRMWARE_DIR"
                 install_readonly "${R}/tmp/pi-bluetooth/LICENCE.broadcom_bcm43xx" "${BLUETOOTH_FIRMWARE_DIR}/LICENCE.broadcom_bcm43xx"
                 install_readonly "${R}/tmp/pi-bluetooth/BCM43430A1.hcd" "${BLUETOOTH_FIRMWARE_DIR}/BCM43430A1.hcd"
                 install_readonly "${R}/tmp/pi-bluetooth/debian/pi-bluetooth.bthelper@.service" "${ETC_DIR}/systemd/system/pi-bluetooth.bthelper@.service"
                 install_readonly "${R}/tmp/pi-bluetooth/debian/pi-bluetooth.hciuart.service" "${ETC_DIR}/systemd/system/pi-bluetooth.hciuart.service"
                 # Remove temporary directories
                 rm -fr "${temp_dir}"
             	rm -fr "${R}"/tmp/pi-bluetooth
                 # Switch Pi3 Bluetooth function to use the mini-UART (ttyS0) and restore UART0/ttyAMA0 over GPIOs 14 & 15. Slow Bluetooth and slow cpu. Use /dev/ttyS0 instead of /dev/ttyAMA0
                 if [ "$ENABLE_MINIUART_OVERLAY" = true ] ; then
             	  # set overlay to swap ttyAMA0 and ttyS0
                   echo "dtoverlay=pi3-miniuart-bt" >> "${BOOT_DIR}/config.txt"
             	  if [ "$ENABLE_TURBO" = false ] ; then
                     echo "core_freq=250" >> "${BOOT_DIR}/config.txt"
                   fi
             	fi
             	# Activate services
             	chroot_exec systemctl enable pi-bluetooth.hciuart.service
               else # if ENABLE_BLUETOOTH = false
               	# set overlay to disable bluetooth
                 echo "dtoverlay=pi3-disable-bt" >> "${BOOT_DIR}/config.txt"
               fi # ENABLE_BLUETOOTH end
             fi
             # may need sudo systemctl disable hciuart
             if [ "$ENABLE_CONSOLE" = true ] ; then
               echo "enable_uart=1"  >> "${BOOT_DIR}/config.txt"
               #More debug output on early but with serial console
               echo "uart_2ndstage=1"  >> "${BOOT_DIR}/config.txt"
               # add string to cmdline
               CMDLINE="${CMDLINE} console=serial0,115200"
               if [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ]|| [ "$RPI_MODEL" = 0 ]; then
                 # if force_turbo didn't lock cpu at high speed, lock it at low speed (XOR logic) or miniuart will be broken
                 if [ "$ENABLE_TURBO" = false ] ; then
                   echo "core_freq=250" >> "${BOOT_DIR}/config.txt"
                 fi
               fi
               # Enable serial console systemd style
               chroot_exec systemctl enable serial-getty@serial0.service
             else
               echo "enable_uart=0"  >> "${BOOT_DIR}/config.txt"
             fi
             # Disable dphys-swapfile service. Will get enabled on first boot
             if [ "$ENABLE_DPHYSSWAP" = true ] ; then
               chroot_exec systemctl disable dphys-swapfile
             fi
             if [ "$ENABLE_SYSTEMDSWAP" = true ] ; then
               # Create temporary directory for systemd-swap sources
               temp_dir=$(as_nobody mktemp -d)
               # Fetch systemd-swap sources
               as_nobody git -C "${temp_dir}" clone "${SYSTEMDSWAP_URL}"
               # Copy downloaded systemd-swap sources
               mv "${temp_dir}/systemd-swap" "${R}/tmp/"
               # Change into downloaded src dir
               cd "${R}/tmp/systemd-swap" || exit
               # Get Verion
               VERSION=$(git tag | tail -n 1)
               #sed -i "s/DEB_NAME=.*/DEB_NAME=systemd-swap_all/g" "${R}/tmp/systemd-swap/package.sh"
               # Build package
               bash ./package.sh debian
               # Change back into script root dir
               cd "${WORKDIR}" || exit
               # Set permissions of the systemd-swap sources
               chown -R root:root "${R}/tmp/systemd-swap"
               # Install package - IMPROVE AND MAKE IT POSSIBLE WITHOUT VERSION NR.
               chroot_exec dpkg -i /tmp/systemd-swap/systemd-swap_"$VERSION"_all.deb
               # Enable service
               chroot_exec systemctl enable systemd-swap
               # Remove temporary directory for systemd-swap sources
               rm -fr "${temp_dir}"
             else
               # Enable ZSWAP in cmdline if systemd-swap is not used
               if [ "$KERNEL_ZSWAP" = true ] ; then
                 CMDLINE="${CMDLINE} zswap.enabled=1 zswap.max_pool_percent=25 zswap.compressor=lz4"
               fi
             fi
               if [ "$KERNEL_SECURITY" = true ] ; then
                 CMDLINE="${CMDLINE} apparmor=1 security=apparmor"
               fi
             # Install firmware boot cmdline
             echo "${CMDLINE}" > "${BOOT_DIR}/cmdline.txt"
             # Setup minimal GPU memory allocation size: 16MB (no X)
-            if [ "$ENABLE_MINGPU" = true ] ; then
+            if [ "$ENABLE_MINGPU" = true ] && [ "$ENABLE_GR_ACCEL" = false ]  ; then
               echo "gpu_mem=16" >> "${BOOT_DIR}/config.txt"
             fi
             # Setup boot with initramfs
             if [ "$ENABLE_INITRAMFS" = true ] ; then
               echo "initramfs initramfs-${KERNEL_VERSION} followkernel" >> "${BOOT_DIR}/config.txt"
             fi
             # Create firmware configuration and cmdline symlinks
             ln -sf firmware/config.txt "${R}/boot/config.txt"
             ln -sf firmware/cmdline.txt "${R}/boot/cmdline.txt"
             # Install and setup kernel modules to load at boot
             mkdir -p "${LIB_DIR}/modules-load.d/"
             install_readonly files/modules/rpi2.conf "${LIB_DIR}/modules-load.d/rpi2.conf"
             # Load hardware random module at boot
             if [ "$ENABLE_HWRANDOM" = true ] && [ "$BUILD_KERNEL" = false ] ; then
               sed -i "s/^# bcm2708_rng/bcm2708_rng/" "${LIB_DIR}/modules-load.d/rpi2.conf"
             fi
             # Load sound module at boot
             if [ "$ENABLE_SOUND" = true ] ; then
               sed -i "s/^# snd_bcm2835/snd_bcm2835/" "${LIB_DIR}/modules-load.d/rpi2.conf"
             else
               echo "dtparam=audio=off" >> "${BOOT_DIR}/config.txt"
             fi
             # Enable I2C interface
             if [ "$ENABLE_I2C" = true ] ; then
               echo "dtparam=i2c_arm=on" >> "${BOOT_DIR}/config.txt"
               sed -i "s/^# i2c-bcm2708/i2c-bcm2708/" "${LIB_DIR}/modules-load.d/rpi2.conf"
               sed -i "s/^# i2c-dev/i2c-dev/" "${LIB_DIR}/modules-load.d/rpi2.conf"
             fi
             # Enable SPI interface
             if [ "$ENABLE_SPI" = true ] ; then
               echo "dtparam=spi=on" >> "${BOOT_DIR}/config.txt"
               echo "spi-bcm2708" >> "${LIB_DIR}/modules-load.d/rpi2.conf"
               if [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ]; then
                 sed -i "s/spi-bcm2708/spi-bcm2835/" "${LIB_DIR}/modules-load.d/rpi2.conf"
               fi
             fi
+            #Enable graphics acceleration for Model 4
+            if [ "$RPI_MODEL" = 4 ] && [ "$ENABLE_GR_ACCEL" = true ] ; then
+              echo "max_framebuffers=2" >> "${BOOT_DIR}/config.txt"
+              echo "arm_64bit=1" >> "${BOOT_DIR}/config.txt"
+              echo "cmdline=cmdline.txt" >> "${BOOT_DIR}/config.txt"
+              echo "dtparam=audio=on" >> "${BOOT_DIR}/config.txt"
+              echo "gpu_mem=128" >> "${BOOT_DIR}/config.txt"
+              echo "dtoverlay=vc4-fkms-v3d, cma-128" >> "${BOOT_DIR}/config.txt"
+            fi
             # Disable RPi2/3 under-voltage warnings
             if [ -n "$DISABLE_UNDERVOLT_WARNINGS" ] ; then
               echo "avoid_warnings=${DISABLE_UNDERVOLT_WARNINGS}" >> "${BOOT_DIR}/config.txt"
             fi
             # Install kernel modules blacklist
             mkdir -p "${ETC_DIR}/modprobe.d/"
             install_readonly files/modules/raspi-blacklist.conf "${ETC_DIR}/modprobe.d/raspi-blacklist.conf"
             # Install sysctl.d configuration files
             install_readonly files/sysctl.d/81-rpi-vm.conf "${ETC_DIR}/sysctl.d/81-rpi-vm.conf"

             #!/bin/sh
             ########################################################################
             # rpi23-gen-image.sh					       2015-2017
             #
             # Advanced Debian "stretch" and "buster" bootstrap script for Raspberry Pi
             #
             # This program is free software; you can redistribute it and/or
             # modify it under the terms of the GNU General Public License
             # as published by the Free Software Foundation; either version 2
             # of the License, or (at your option) any later version.
             #
             # Copyright (C) 2015 Jan Wagner <mail@jwagner.eu>
             #
             # Big thanks for patches and enhancements by 20+ github contributors!
             ########################################################################
             # Are we running as root?
             if [ "$(id -u)" -ne "0" ] ; then
               echo "error: this script must be executed with root privileges!"
               exit 1
             fi
             # Check if ./functions.sh script exists
             if [ ! -r "./functions.sh" ] ; then
               echo "error: './functions.sh' required script not found!"
               exit 1
             fi
             # Load utility functions
             . ./functions.sh
             # Load parameters from configuration template file
             if [ -n "$CONFIG_TEMPLATE" ] ; then
               use_template
             fi
             # Introduce settings
             set -e
             echo -n -e "\n#\n# RPi 0/1/2/3/4 Bootstrap Settings\n#\n"
             set -x
             # Raspberry Pi model configuration
             RPI_MODEL=${RPI_MODEL:=3P}
             # Debian release
             RELEASE=${RELEASE:=buster}
             if [ $RELEASE = "bullseye" ] ; then
               RELEASE=testing
             fi
             # Kernel Branch
             KERNEL_BRANCH=${KERNEL_BRANCH:=""}
             # URLs
             KERNEL_URL=${KERNEL_URL:=https://github.com/raspberrypi/linux}
             FIRMWARE_URL=${FIRMWARE_URL:=https://github.com/raspberrypi/firmware/raw/master/boot}
             WLAN_FIRMWARE_URL=${WLAN_FIRMWARE_URL:=https://github.com/RPi-Distro/firmware-nonfree/raw/master/brcm}
             FBTURBO_URL=${FBTURBO_URL:=https://github.com/ssvb/xf86-video-fbturbo.git}
             UBOOT_URL=${UBOOT_URL:=https://git.denx.de/u-boot.git}
             VIDEOCORE_URL=${VIDEOCORE_URL:=https://github.com/raspberrypi/userland}
             BLUETOOTH_URL=${BLUETOOTH_URL:=https://github.com/RPi-Distro/pi-bluetooth.git}
             NEXMON_URL=${NEXMON_URL:=https://github.com/seemoo-lab/nexmon.git}
             SYSTEMDSWAP_URL=${SYSTEMDSWAP_URL:=https://github.com/Nefelim4ag/systemd-swap.git}
             # Kernel deb packages for 32bit kernel
             RPI_32_KERNEL_URL=${RPI_32_KERNEL_URL:=https://github.com/hypriot/rpi-kernel/releases/download/v4.14.34/raspberrypi-kernel_20180422-141901_armhf.deb}
             RPI_32_KERNELHEADER_URL=${RPI_32_KERNELHEADER_URL:=https://github.com/hypriot/rpi-kernel/releases/download/v4.14.34/raspberrypi-kernel-headers_20180422-141901_armhf.deb}
             # Kernel has KVM and zswap enabled - use if KERNEL_* parameters and precompiled kernel are used
             RPI3_64_BIS_KERNEL_URL=${RPI3_64_BIS_KERNEL_URL:=https://github.com/sakaki-/bcmrpi3-kernel-bis/releases/download/4.19.102.20200211/bcmrpi3-kernel-bis-4.19.102.20200211.tar.xz}
             # Default precompiled 64bit kernel
             RPI3_64_DEF_KERNEL_URL=${RPI3_64_DEF_KERNEL_URL:=https://github.com/sakaki-/bcmrpi3-kernel/releases/download/4.19.102.20200211/bcmrpi3-kernel-4.19.102.20200211.tar.xz}
             # Sakaki BIS Kernel RPI4 - https://github.com/sakaki-/bcm2711-kernel-bis
             RPI4_64_BIS_KERNEL_URL=${RPI4_64_BIS_KERNEL_URL:=https://github.com/sakaki-/bcm2711-kernel-bis/releases/download/4.19.102.20200211/bcm2711-kernel-bis-4.19.102.20200211.tar.xz}
             # Default precompiled 64bit kernel - https://github.com/sakaki-/bcm2711-kernel
             RPI4_64_DEF_KERNEL_URL=${RPI4_64_DEF_KERNEL_URL:=https://github.com/sakaki-/bcm2711-kernel-bis/releases/download/4.19.102.20200211/bcm2711-kernel-bis-4.19.102.20200211.tar.xz}
             # Generic
             RPI3_64_KERNEL_URL=${RPI3_64_KERNEL_URL:=$RPI3_64_DEF_KERNEL_URL}
             RPI4_64_KERNEL_URL=${RPI4_64_KERNEL_URL:=$RPI4_64_DEF_KERNEL_URL}
             # Kali kernel src - used if ENABLE_NEXMON=true (they patch the wlan kernel modul)
             KALI_KERNEL_URL=${KALI_KERNEL_URL:=https://github.com/Re4son/re4son-raspberrypi-linux.git}
             # Build directories
             WORKDIR=$(pwd)
             BASEDIR=${BASEDIR:=${WORKDIR}/images/${RELEASE}}
             BUILDDIR="${BASEDIR}/build"
             # Chroot directories
             R="${BUILDDIR}/chroot"
             ETC_DIR="${R}/etc"
             LIB_DIR="${R}/lib"
             BOOT_DIR="${R}/boot/firmware"
             KERNEL_DIR="${R}/usr/src/linux"
             WLAN_FIRMWARE_DIR="${LIB_DIR}/firmware/brcm"
             BLUETOOTH_FIRMWARE_DIR="${ETC_DIR}/firmware/bt"
             # APT settings
             APT_SERVER=${APT_SERVER:="ftp.debian.org"}
             APT_PROXY=${APT_PROXY:=""}
             KEEP_APT_PROXY=${KEEP_APT_PROXY:=false}
             # Packages required in the chroot build environment
             APT_INCLUDES=${APT_INCLUDES:=""}
             APT_INCLUDES="${APT_INCLUDES},apt-transport-https,apt-utils,ca-certificates,debian-archive-keyring,dialog,sudo,systemd,sysvinit-utils,locales,keyboard-configuration,console-setup,libnss-systemd"
             # Packages to exclude from chroot build environment
             APT_EXCLUDES=${APT_EXCLUDES:=""}
             # General settings
             SET_ARCH=${SET_ARCH:=32}
             HOSTNAME=${HOSTNAME:=rpi${RPI_MODEL}-${RELEASE}}
             DEFLOCAL=${DEFLOCAL:="en_US.UTF-8"}
             TIMEZONE=${TIMEZONE:="Europe/Berlin"}
             EXPANDROOT=${EXPANDROOT:=true}
             ENABLE_ROOT=${ENABLE_ROOT:=false}
             ROOT_PASSWORD=${ROOT_PASSWORD:=raspberry}
             ENABLE_USER=${ENABLE_USER:=true}
             USER_NAME=${USER_NAME:="pi"}
             USER_PASSWORD=${USER_PASSWORD:=raspberry}
             # Keyboard settings
             XKB_MODEL=${XKB_MODEL:=""}
             XKB_LAYOUT=${XKB_LAYOUT:=""}
             XKB_VARIANT=${XKB_VARIANT:=""}
             XKB_OPTIONS=${XKB_OPTIONS:=""}
             # Networking settings:
             ENABLE_IPV6=${ENABLE_IPV6:=true}
             ENABLE_WIRELESS=${ENABLE_WIRELESS:=false}
             ENABLE_IPTABLES=${ENABLE_IPTABLES:=false}
             ENABLE_HARDNET=${ENABLE_HARDNET:=false}
             ENABLE_IFNAMES=${ENABLE_IFNAMES:=true}
             # Network settings (DHCP)
             ENABLE_ETH_DHCP=${ENABLE_ETH_DHCP:=true}
             ENABLE_WIFI_DHCP=${ENABLE_ETH_DHCP:=true}
             # Network settings (static)
             NET_ETH_ADDRESS=${NET_ETH_ADDRESS:=""}
             NET_ETH_GATEWAY=${NET_ETH_GATEWAY:=""}
             NET_ETH_DNS_1=${NET_ETH_DNS_1:=""}
             NET_ETH_DNS_2=${NET_ETH_DNS_2:=""}
             NET_ETH_DNS_DOMAINS=${NET_ETH_DNS_DOMAINS:=""}
             NET_ETH_NTP_1=${NET_ETH_NTP_1:=""}
             NET_ETH_NTP_2=${NET_ETH_NTP_2:=""}
             # Networking settings (WIFI):
             NET_WIFI_SSID=${NET_WIFI_SSID:=""}
             NET_WIFI_PSK=${NET_WIFI_PSK:=""}
             # Network settings (static)
             NET_WIFI_ADDRESS=${NET_WIFI_ADDRESS:=""}
             NET_WIFI_GATEWAY=${NET_WIFI_GATEWAY:=""}
             NET_WIFI_DNS_1=${NET_WIFI_DNS_1:=""}
             NET_WIFI_DNS_2=${NET_WIFI_DNS_2:=""}
             NET_WIFI_DNS_DOMAINS=${NET_WIFI_DNS_DOMAINS:=""}
             NET_WIFI_NTP_1=${NET_WIFI_NTP_1:=""}
             NET_WIFI_NTP_2=${NET_WIFI_NTP_2:=""}
             # Feature settings
             ENABLE_CONSOLE=${ENABLE_CONSOLE:=false}
             ENABLE_PRINTK=${ENABLE_PRINTK:=false}
             ENABLE_BLUETOOTH=${ENABLE_BLUETOOTH:=false}
             ENABLE_MINIUART_OVERLAY=${ENABLE_MINIUART_OVERLAY:=false}
             ENABLE_TURBO=${ENABLE_TURBO:=false}
             ENABLE_I2C=${ENABLE_I2C:=false}
             ENABLE_SPI=${ENABLE_SPI:=false}
             ENABLE_NONFREE=${ENABLE_NONFREE:=false}
             ENABLE_RSYSLOG=${ENABLE_RSYSLOG:=true}
             ENABLE_SOUND=${ENABLE_SOUND:=false}
             ENABLE_HWRANDOM=${ENABLE_HWRANDOM:=true}
             ENABLE_MINGPU=${ENABLE_MINGPU:=false}
             ENABLE_XORG=${ENABLE_XORG:=false}
             ENABLE_WM=${ENABLE_WM:=""}
             ENABLE_SYSVINIT=${ENABLE_SYSVINIT:=false}
             ENABLE_SPLASH=${ENABLE_SPLASH:=true}
             ENABLE_LOGO=${ENABLE_LOGO:=true}
             ENABLE_SILENT_BOOT=${ENABLE_SILENT_BOOT=false}
             DISABLE_UNDERVOLT_WARNINGS=${DISABLE_UNDERVOLT_WARNINGS:=}
             # Advanced settings
             ENABLE_DPHYSSWAP=${ENABLE_DPHYSSWAP:=true}
             ENABLE_SYSTEMDSWAP=${ENABLE_SYSTEMDSWAP:=false}
             ENABLE_QEMU=${ENABLE_QEMU:=false}
             ENABLE_KEYGEN=${ENABLE_KEYGEN:=false}
             ENABLE_MINBASE=${ENABLE_MINBASE:=false}
             ENABLE_SPLITFS=${ENABLE_SPLITFS:=false}
             ENABLE_INITRAMFS=${ENABLE_INITRAMFS:=false}
             ENABLE_DBUS=${ENABLE_DBUS:=true}
             ENABLE_USBBOOT=${ENABLE_USBBOOT=false}
             CHROOT_SCRIPTS=${CHROOT_SCRIPTS:=""}
             ENABLE_UBOOT=${ENABLE_UBOOT:=false}
             UBOOTSRC_DIR=${UBOOTSRC_DIR:=""}
             ENABLE_FBTURBO=${ENABLE_FBTURBO:=false}
+            ENABLE_GR_ACCEL=$ENABLE_GR_ACCEL:=true}
             FBTURBOSRC_DIR=${FBTURBOSRC_DIR:=""}
             ENABLE_VIDEOCORE=${ENABLE_VIDEOCORE:=false}
             VIDEOCORESRC_DIR=${VIDEOCORESRC_DIR:=""}
             ENABLE_NEXMON=${ENABLE_NEXMON:=false}
             NEXMONSRC_DIR=${NEXMONSRC_DIR:=""}
             # SSH settings
             SSH_ENABLE=${SSH_ENABLE:=true}
             SSH_ENABLE_ROOT=${SSH_ENABLE_ROOT:=false}
             SSH_DISABLE_PASSWORD_AUTH=${SSH_DISABLE_PASSWORD_AUTH:=false}
             SSH_LIMIT_USERS=${SSH_LIMIT_USERS:=false}
             SSH_ROOT_PUB_KEY=${SSH_ROOT_PUB_KEY:=""}
             SSH_USER_PUB_KEY=${SSH_USER_PUB_KEY:=""}
             # Kernel compilation settings
             BUILD_KERNEL=${BUILD_KERNEL:=true}
             KERNEL_THREADS=${KERNEL_THREADS:=1}
             KERNEL_HEADERS=${KERNEL_HEADERS:=true}
             KERNEL_MENUCONFIG=${KERNEL_MENUCONFIG:=false}
             KERNEL_OLDDEFCONFIG=${KERNEL_OLDDEFCONFIG:=false}
             KERNEL_CCACHE=${KERNEL_CCACHE:=false}
             KERNEL_REMOVESRC=${KERNEL_REMOVESRC:=true}
             KERNELSRC_DIR=${KERNELSRC_DIR:=""}
             KERNELSRC_CLEAN=${KERNELSRC_CLEAN:=false}
             KERNELSRC_CONFIG=${KERNELSRC_CONFIG:=true}
             KERNELSRC_USRCONFIG=${KERNELSRC_USRCONFIG:=""}
             KERNELSRC_PREBUILT=${KERNELSRC_PREBUILT:=false}
             # Firmware directory: Blank if download from github
             RPI_FIRMWARE_DIR=${RPI_FIRMWARE_DIR:=""}
             KERNEL_DEFAULT_GOV=${KERNEL_DEFAULT_GOV:=ondemand}
             KERNEL_NF=${KERNEL_NF:=false}
             KERNEL_VIRT=${KERNEL_VIRT:=false}
             KERNEL_ZSWAP=${KERNEL_ZSWAP:=false}
             KERNEL_BPF=${KERNEL_BPF:=false}
             KERNEL_SECURITY=${KERNEL_SECURITY:=false}
             KERNEL_BTRFS=${KERNEL_BTRFS:=false}
             KERNEL_POEHAT=${KERNEL_POEHAT:=false}
             KERNEL_NSPAN=${KERNEL_NSPAN:=false}
             KERNEL_DHKEY=${KERNEL_DHKEY:=true}
             # Reduce disk usage settings
             ENABLE_REDUCE=${ENABLE_REDUCE:=false}
             REDUCE_APT=${REDUCE_APT:=true}
             REDUCE_DOC=${REDUCE_DOC:=false}
             REDUCE_MAN=${REDUCE_MAN:=false}
             REDUCE_VIM=${REDUCE_VIM:=false}
             REDUCE_BASH=${REDUCE_BASH:=false}
             REDUCE_HWDB=${REDUCE_HWDB:=false}
             REDUCE_SSHD=${REDUCE_SSHD:=false}
             REDUCE_LOCALE=${REDUCE_LOCALE:=false}
             REDUCE_KERNEL=${REDUCE_KERNEL:=false}
             # Encrypted filesystem settings
             ENABLE_CRYPTFS=${ENABLE_CRYPTFS:=false}
             CRYPTFS_PASSWORD=${CRYPTFS_PASSWORD:=""}
             CRYPTFS_MAPPING=${CRYPTFS_MAPPING:="secure"}
             CRYPTFS_CIPHER=${CRYPTFS_CIPHER:="aes-xts-plain64"}
             CRYPTFS_HASH=${CRYPTFS_HASH:="sha256"}
             CRYPTFS_XTSKEYSIZE=${CRYPTFS_XTSKEYSIZE:=256}
             #Dropbear-initramfs supports unlocking encrypted filesystem via SSH on bootup
             CRYPTFS_DROPBEAR=${CRYPTFS_DROPBEAR:=false}
             #Provide your own Dropbear Public RSA-OpenSSH Key otherwise it will be generated
             CRYPTFS_DROPBEAR_PUBKEY=${CRYPTFS_DROPBEAR_PUBKEY:=""}
             # Packages required for bootstrapping
             REQUIRED_PACKAGES="debootstrap debian-archive-keyring qemu-user-static binfmt-support dosfstools rsync bmap-tools whois git bc psmisc dbus bison flex libssl-dev sudo"
             MISSING_PACKAGES=""
             # Packages installed for c/c++ build environment in chroot (keep empty)
             COMPILER_PACKAGES=""
             # Check if apt-cacher-ng has port 3142 open and set APT_PROXY
             APT_CACHER_RUNNING=$(lsof -i :3142 | cut -d ' ' -f3 | uniq | sed '/^\s*$/d')
             if [ "${APT_CACHER_RUNNING}" = "apt-cacher-ng" ] ; then
               APT_PROXY=http://127.0.0.1:3142/
             fi
             # Setup architecture specific settings
             if [ -n "$SET_ARCH" ] ; then
               ## 64-bit configuration
               if [ "$SET_ARCH" = 64 ] ; then
                 ### General 64-bit depended settings
                 QEMU_BINARY=${QEMU_BINARY:=/usr/bin/qemu-aarch64-static}
                 KERNEL_ARCH=${KERNEL_ARCH:=arm64}
                 KERNEL_BIN_IMAGE=${KERNEL_BIN_IMAGE:="Image"}
                 ### Raspberry Pi 64-bit model specific settings
                 if [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] || [ "$RPI_MODEL" = 4 ] ; then
                   if [ "$RPI_MODEL" != 4 ] ; then
                     KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcmrpi3_defconfig}
                   else
                     KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcm2711_defconfig}
                   fi
                   REQUIRED_PACKAGES="${REQUIRED_PACKAGES} crossbuild-essential-arm64"
                   RELEASE_ARCH=${RELEASE_ARCH:=arm64}
                   KERNEL_IMAGE=${KERNEL_IMAGE:=kernel8.img}
                   CROSS_COMPILE=${CROSS_COMPILE:=aarch64-linux-gnu-}
                 else
                   echo "error: Only Raspberry PI 3, 3B+ and 4 support 64-bit"
                   exit 1
                 fi
               fi
               ## 32-bit configuration
               if [ "$SET_ARCH" = 32 ] ; then
                 ### General 32-bit dependend settings
                 QEMU_BINARY=${QEMU_BINARY:=/usr/bin/qemu-arm-static}
                 KERNEL_ARCH=${KERNEL_ARCH:=arm}
                 KERNEL_BIN_IMAGE=${KERNEL_BIN_IMAGE:="zImage"}
                 ### Raspberry Pi (0-1P) model specific settings
                 if [ "$RPI_MODEL" = 0 ] || [ "$RPI_MODEL" = 1 ] || [ "$RPI_MODEL" = 1P ] ; then
                   REQUIRED_PACKAGES="${REQUIRED_PACKAGES} crossbuild-essential-armel"
                   KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcmrpi_defconfig}
                   RELEASE_ARCH=${RELEASE_ARCH:=armel}
                   KERNEL_IMAGE=${KERNEL_IMAGE:=kernel.img}
                   CROSS_COMPILE=${CROSS_COMPILE:=arm-linux-gnueabi-}
                   if [ $ENABLE_XORG = true ] ; then
                     if [$RELEASE = "stretch" ] || [$RELEASE = "oldstable" ] ; then
                       printf "\nBest support for armel architecture is provided under Debian stretch/oldstable. Choose yes to change release to Debian stretch[y/n] "
                       read -r confirm
                       if [ "$confirm" = "y" ] ; then
                         $RELEASE = "stretch"
                       fi
                     fi
                   fi
                 fi
                 ### Raspberry Pi (2-4) model specific settings
                 if [ "$RPI_MODEL" = 2 ] || [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] || [ "$RPI_MODEL" = 4 ] ; then
                   if [ "$RPI_MODEL" != 4 ] ; then
                     KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcm2709_defconfig}
                     KERNEL_IMAGE=${KERNEL_IMAGE:=kernel7.img}
                   else
                     KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcm2711_defconfig}
                     KERNEL_IMAGE=${KERNEL_IMAGE:=kernel7l.img}
                   fi
                   REQUIRED_PACKAGES="${REQUIRED_PACKAGES} crossbuild-essential-armhf"
                   RELEASE_ARCH=${RELEASE_ARCH:=armhf}
                   CROSS_COMPILE=${CROSS_COMPILE:=arm-linux-gnueabihf-}
                 fi
               fi
               # SET_ARCH not set
             else
               echo "error: Please set '32' or '64' as value for SET_ARCH"
               exit 1
             fi
             # Device specific configuration and U-Boot configuration
             case "$RPI_MODEL" in
 )
               DTB_FILE=${DTB_FILE:=bcm2708-rpi-0-w.dtb}
               UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_defconfig}
               ;;
 )
               DTB_FILE=${DTB_FILE:=bcm2708-rpi-b.dtb}
               UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_defconfig}
               ;;
 P)
               DTB_FILE=${DTB_FILE:=bcm2708-rpi-b-plus.dtb}
               UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_defconfig}
               ;;
 )
               DTB_FILE=${DTB_FILE:=bcm2709-rpi-2-b.dtb}
               UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_2_defconfig}
               ;;
 )
               DTB_FILE=${DTB_FILE:=bcm2710-rpi-3-b.dtb}
               UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_3_defconfig}
               ;;
 P)
               DTB_FILE=${DTB_FILE:=bcm2710-rpi-3-b.dtb}
               UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_3_defconfig}
               ;;
 )
               DTB_FILE=${DTB_FILE:=bcm2711-rpi-4-b.dtb}
               UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_4_defconfig}
               ;;
               *)
               echo "error: Raspberry Pi model $RPI_MODEL is not supported!"
               exit 1
               ;;
             esac
             # Raspberry PI 0,3,3P with Bluetooth and Wifi onboard
             if [ "$RPI_MODEL" = 0 ] || [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] || [ "$RPI_MODEL" = 4 ] ; then
               ## Include bluetooth packages on supported boards
               if [ "$ENABLE_BLUETOOTH" = true ] ; then
                 APT_INCLUDES="${APT_INCLUDES},bluetooth,bluez"
               fi
               if [ "$ENABLE_WIRELESS" = true ] ; then
                 APT_INCLUDES="${APT_INCLUDES},wireless-tools,crda,wireless-regdb,wpasupplicant"
               fi
               # Raspberry PI 1,1P,2 without Wifi and bluetooth onboard
             else
               ## Check if the internal wireless interface is not supported by the RPi model
               if [ "$ENABLE_WIRELESS" = true ] || [ "$ENABLE_BLUETOOTH" = true ]; then
                 echo "error: The selected Raspberry Pi model has no integrated interface for wireless or bluetooth"
                 exit 1
               fi
             fi
             if [ "$BUILD_KERNEL" = false ] && [ "$ENABLE_NEXMON" = true ]; then
               echo "error: You have to compile kernel sources, if you want to enable nexmon"
               exit 1
             fi
             # Prepare date string for default image file name
             DATE="$(date +%Y-%m-%d)"
             if [ -z "$KERNEL_BRANCH" ] ; then
               IMAGE_NAME=${IMAGE_NAME:=${BASEDIR}/${DATE}-${KERNEL_ARCH}-CURRENT-rpi${RPI_MODEL}-${RELEASE}-${RELEASE_ARCH}}
             else
               IMAGE_NAME=${IMAGE_NAME:=${BASEDIR}/${DATE}-${KERNEL_ARCH}-${KERNEL_BRANCH}-rpi${RPI_MODEL}-${RELEASE}-${RELEASE_ARCH}}
             fi
             # Check if DISABLE_UNDERVOLT_WARNINGS parameter value is supported
             if [ -n "$DISABLE_UNDERVOLT_WARNINGS" ] ; then
               if [ "$DISABLE_UNDERVOLT_WARNINGS" != 1 ] && [ "$DISABLE_UNDERVOLT_WARNINGS" != 2 ] ; then
                 echo "error: DISABLE_UNDERVOLT_WARNINGS=${DISABLE_UNDERVOLT_WARNINGS} is not supported"
                 exit 1
               fi
             fi
             # Add cmake to compile videocore sources
             if [ "$ENABLE_VIDEOCORE" = true ] ; then
               REQUIRED_PACKAGES="${REQUIRED_PACKAGES} cmake"
             fi
             # Add deps for nexmon
             if [ "$ENABLE_NEXMON" = true ] ; then
               REQUIRED_PACKAGES="${REQUIRED_PACKAGES} libgmp3-dev gawk qpdf make autoconf automake build-essential libtool"
             fi
             # Add libncurses5 to enable kernel menuconfig
             if [ "$KERNEL_MENUCONFIG" = true ] ; then
               REQUIRED_PACKAGES="${REQUIRED_PACKAGES} libncurses-dev"
             fi
             # Add ccache compiler cache for (faster) kernel cross (re)compilation
             if [ "$KERNEL_CCACHE" = true ] ; then
               REQUIRED_PACKAGES="${REQUIRED_PACKAGES} ccache"
             fi
             # Add cryptsetup package to enable filesystem encryption
             if [ "$ENABLE_CRYPTFS" = true ]  && [ "$BUILD_KERNEL" = true ] ; then
               REQUIRED_PACKAGES="${REQUIRED_PACKAGES} cryptsetup"
               APT_INCLUDES="${APT_INCLUDES},cryptsetup,busybox,console-setup,cryptsetup-initramfs"
               ## If cryptfs,dropbear and initramfs are enabled include dropbear-initramfs package
               if [ "$CRYPTFS_DROPBEAR" = true ] && [ "$ENABLE_INITRAMFS" = true ]; then
                 APT_INCLUDES="${APT_INCLUDES},dropbear-initramfs"
               fi
               if [ -z "$CRYPTFS_PASSWORD" ] ; then
                 echo "error: no password defined (CRYPTFS_PASSWORD)!"
                 exit 1
               fi
               ENABLE_INITRAMFS=true
             fi
             # Add initramfs generation tools
             if [ "$ENABLE_INITRAMFS" = true ] && [ "$BUILD_KERNEL" = true ] ; then
               APT_INCLUDES="${APT_INCLUDES},initramfs-tools"
             fi
             # Add device-tree-compiler required for building the U-Boot bootloader
             if [ "$ENABLE_UBOOT" = true ] ; then
               APT_INCLUDES="${APT_INCLUDES},device-tree-compiler,bc"
             fi
             if [ "$ENABLE_USBBOOT" = true ] ; then
             if [ "$RPI_MODEL" = 0 ] || [ "$RPI_MODEL" = 1P ] || [ "$RPI_MODEL" = 1 ] || [ "$RPI_MODEL" = 2 ]; then
               echo "error: Booting from USB alone is only supported by Raspberry Pi 3 and 3P"
               exit 1
             fi
             fi
             # Check if root SSH (v2) public key file exists
             if [ -n "$SSH_ROOT_PUB_KEY" ] ; then
               if [ ! -f "$SSH_ROOT_PUB_KEY" ] ; then
                 echo "error: '$SSH_ROOT_PUB_KEY' specified SSH public key file not found (SSH_ROOT_PUB_KEY)!"
                 exit 1
               fi
             fi
             # Check if $USER_NAME SSH (v2) public key file exists
             if [ -n "$SSH_USER_PUB_KEY" ] ; then
               if [ ! -f "$SSH_USER_PUB_KEY" ] ; then
                 echo "error: '$SSH_USER_PUB_KEY' specified SSH public key file not found (SSH_USER_PUB_KEY)!"
                 exit 1
               fi
             fi
             if [ "$ENABLE_NEXMON" = true ] && [ -n "$KERNEL_BRANCH" ] ; then
               echo "error: Please unset KERNEL_BRANCH if using ENABLE_NEXMON"
               exit 1
             fi
             # Check if all required packages are installed on the build system
             for package in $REQUIRED_PACKAGES ; do
               if [ "$(dpkg-query -W -f='${Status}' "$package")" != "install ok installed" ] ; then
                 MISSING_PACKAGES="${MISSING_PACKAGES} $package"
               fi
             done
             # If there are missing packages ask confirmation for install, or exit
             if [ -n "$MISSING_PACKAGES" ] ; then
               echo "the following packages needed by this script are not installed:"
               echo "$MISSING_PACKAGES"
               printf "\ndo you want to install the missing packages right now? [y/n] "
               read -r confirm
               [ "$confirm" != "y" ] && exit 1
               ## Make sure all missing required packages are installed
               apt-get update && apt-get -qq -y install `echo "${MISSING_PACKAGES}" | sed "s/ //"`
             fi
             # Check if ./bootstrap.d directory exists
             if [ ! -d "./bootstrap.d/" ] ; then
               echo "error: './bootstrap.d' required directory not found!"
               exit 1
             fi
             # Check if ./files directory exists
             if [ ! -d "./files/" ] ; then
               echo "error: './files' required directory not found!"
               exit 1
             fi
             # Check if specified KERNELSRC_DIR directory exists
             if [ -n "$KERNELSRC_DIR" ] && [ ! -d "$KERNELSRC_DIR" ] ; then
               echo "error: '${KERNELSRC_DIR}' specified directory not found (KERNELSRC_DIR)!"
               exit 1
             fi
             # Check if specified UBOOTSRC_DIR directory exists
             if [ -n "$UBOOTSRC_DIR" ] && [ ! -d "$UBOOTSRC_DIR" ] ; then
               echo "error: '${UBOOTSRC_DIR}' specified directory not found (UBOOTSRC_DIR)!"
               exit 1
             fi
             # Check if specified VIDEOCORESRC_DIR directory exists
             if [ -n "$VIDEOCORESRC_DIR" ] && [ ! -d "$VIDEOCORESRC_DIR" ] ; then
               echo "error: '${VIDEOCORESRC_DIR}' specified directory not found (VIDEOCORESRC_DIR)!"
               exit 1
             fi
             # Check if specified FBTURBOSRC_DIR directory exists
             if [ -n "$FBTURBOSRC_DIR" ] && [ ! -d "$FBTURBOSRC_DIR" ] ; then
               echo "error: '${FBTURBOSRC_DIR}' specified directory not found (FBTURBOSRC_DIR)!"
               exit 1
             fi
             # Check if specified NEXMONSRC_DIR directory exists
             if [ -n "$NEXMONSRC_DIR" ] && [ ! -d "$NEXMONSRC_DIR" ] ; then
               echo "error: '${NEXMONSRC_DIR}' specified directory not found (NEXMONSRC_DIR)!"
               exit 1
             fi
             # Check if specified CHROOT_SCRIPTS directory exists
             if [ -n "$CHROOT_SCRIPTS" ] && [ ! -d "$CHROOT_SCRIPTS" ] ; then
               echo "error: ${CHROOT_SCRIPTS} specified directory not found (CHROOT_SCRIPTS)!"
               exit 1
             fi
             # Check if specified device mapping already exists (will be used by cryptsetup)
             if [ -r "/dev/mapping/${CRYPTFS_MAPPING}" ] ; then
               echo "error: mapping /dev/mapping/${CRYPTFS_MAPPING} already exists, not proceeding"
               exit 1
             fi
             # Don't clobber an old build
             if [ -e "$BUILDDIR" ] ; then
               echo "error: directory ${BUILDDIR} already exists, not proceeding"
               exit 1
             fi
             # Setup chroot directory
             mkdir -p "${R}"
             # Check if build directory has enough of free disk space >512MB
             if [ "$(df --output=avail "${BUILDDIR}" | sed "1d")" -le "524288" ] ; then
               echo "error: ${BUILDDIR} not enough space left to generate the output image!"
               exit 1
             fi
             set -x
             # Call "cleanup" function on various signals and errors
             trap cleanup 0 1 2 3 6
             # Add required packages for the minbase installation
             if [ "$ENABLE_MINBASE" = true ] ; then
               APT_INCLUDES="${APT_INCLUDES},vim-tiny,netbase,net-tools,ifupdown"
             fi
             # Add parted package, required to get partprobe utility
             if [ "$EXPANDROOT" = true ] ; then
               APT_INCLUDES="${APT_INCLUDES},parted"
             fi
             # Add dphys-swapfile package, required to enable swap
             if [ "$ENABLE_DPHYSSWAP" = true ] ; then
               APT_INCLUDES="${APT_INCLUDES},dphys-swapfile"
             fi
             # Add dbus package, recommended if using systemd
             if [ "$ENABLE_DBUS" = true ] ; then
               APT_INCLUDES="${APT_INCLUDES},dbus"
             fi
             # Add iptables IPv4/IPv6 package
             if [ "$ENABLE_IPTABLES" = true ] ; then
               APT_INCLUDES="${APT_INCLUDES},iptables,iptables-persistent"
             fi
             # Add apparmor for KERNEL_SECURITY
             if [ "$KERNEL_SECURITY" = true ] ; then
               APT_INCLUDES="${APT_INCLUDES},apparmor,apparmor-utils,apparmor-profiles,apparmor-profiles-extra,libapparmor-perl"
             fi
             # Add openssh server package
             if [ "$SSH_ENABLE" = true ] ; then
               APT_INCLUDES="${APT_INCLUDES},openssh-server"
             fi
             # Add alsa-utils package
             if [ "$ENABLE_SOUND" = true ] ; then
               APT_INCLUDES="${APT_INCLUDES},alsa-utils"
             fi
             # Add rng-tools package
             if [ "$ENABLE_HWRANDOM" = true ] ; then
               APT_INCLUDES="${APT_INCLUDES},rng-tools"
             fi
             # Add fbturbo video driver
             if [ "$ENABLE_FBTURBO" = true ] ; then
               # Enable xorg package dependencies
               ENABLE_XORG=true
             fi
             # Add user defined window manager package
             if [ -n "$ENABLE_WM" ] ; then
               APT_INCLUDES="${APT_INCLUDES},${ENABLE_WM}"
               # Enable xorg package dependencies
               ENABLE_XORG=true
             fi
             # Add xorg package
             if [ "$ENABLE_XORG" = true ] ; then
               APT_INCLUDES="${APT_INCLUDES},xorg,dbus-x11"
             fi
             # Replace selected packages with smaller clones
             if [ "$ENABLE_REDUCE" = true ] ; then
               ## Add levee package instead of vim-tiny
               if [ "$REDUCE_VIM" = true ] ; then
                 APT_INCLUDES="$(echo ${APT_INCLUDES} | sed "s/vim-tiny/levee/")"
               fi
               ## Add dropbear package instead of openssh-server
               if [ "$REDUCE_SSHD" = true ] ; then
                 APT_INCLUDES="$(echo "${APT_INCLUDES}" | sed "s/openssh-server/dropbear/")"
               fi
             fi
             # Configure systemd-sysv exclude to make halt/reboot/shutdown scripts available
             if [ "$ENABLE_SYSVINIT" = false ] ; then
               APT_EXCLUDES="--exclude=${APT_EXCLUDES},init,systemd-sysv"
             fi
             # Configure kernel sources if no KERNELSRC_DIR
             if [ "$BUILD_KERNEL" = true ] && [ -z "$KERNELSRC_DIR" ] ; then
               KERNELSRC_CONFIG=true
             fi
             # Configure reduced kernel
             if [ "$KERNEL_REDUCE" = true ] ; then
               KERNELSRC_CONFIG=false
             fi
             # Configure qemu compatible kernel
             if [ "$ENABLE_QEMU" = true ] ; then
               DTB_FILE=vexpress-v2p-ca15_a7.dtb
               UBOOT_CONFIG=vexpress_ca15_tc2_defconfig
               KERNEL_DEFCONFIG="vexpress_defconfig"
               if [ "$KERNEL_MENUCONFIG" = false ] ; then
                 KERNEL_OLDDEFCONFIG=true
               fi
             fi
             # Execute bootstrap scripts
             for SCRIPT in bootstrap.d/*.sh; do
               head -n 3 "$SCRIPT"
               . "$SCRIPT"
             done
             ## Execute custom bootstrap scripts
             if [ -d "custom.d" ] ; then
               for SCRIPT in custom.d/*.sh; do
                 . "$SCRIPT"
               done
             fi
             # Execute custom scripts inside the chroot
             if [ -n "$CHROOT_SCRIPTS" ] && [ -d "$CHROOT_SCRIPTS" ] ; then
               cp -r "${CHROOT_SCRIPTS}" "${R}/chroot_scripts"
               chroot_exec /bin/bash -x << EOF
             for SCRIPT in /chroot_scripts/* ; do
               if [ -f $SCRIPT -a -x $SCRIPT ] ; then
                 $SCRIPT
               fi
             done
             EOF
               rm -rf "${R}/chroot_scripts"
             fi
             # Remove c/c++ build environment from the chroot
             chroot_remove_cc
             # Generate required machine-id
             MACHINE_ID=$(dbus-uuidgen)
             echo -n "${MACHINE_ID}" > "${R}/var/lib/dbus/machine-id"
             echo -n "${MACHINE_ID}" > "${ETC_DIR}/machine-id"
             # APT Cleanup
             chroot_exec apt-get -y clean
             chroot_exec apt-get -y autoclean
             chroot_exec apt-get -y autoremove
             # Unmount mounted filesystems
             umount -l "${R}/proc"
             umount -l "${R}/sys"
             # Clean up directories
             rm -rf "${R}/run/*"
             rm -rf "${R}/tmp/*"
             # Clean up APT proxy settings
             if [ "$KEEP_APT_PROXY" = false ] ; then
               rm -f "${ETC_DIR}/apt/apt.conf.d/10proxy"
             fi
             # Clean up files
             rm -f "${ETC_DIR}/ssh/ssh_host_*"
             rm -f "${ETC_DIR}/dropbear/dropbear_*"
             rm -f "${ETC_DIR}/apt/sources.list.save"
             rm -f "${ETC_DIR}/resolvconf/resolv.conf.d/original"
             rm -f "${ETC_DIR}/*-"
             rm -f "${ETC_DIR}/resolv.conf"
             rm -f "${R}/root/.bash_history"
             rm -f "${R}/var/lib/urandom/random-seed"
             rm -f "${R}/initrd.img"
             rm -f "${R}/vmlinuz"
             rm -f "${R}${QEMU_BINARY}"
             if [ "$ENABLE_QEMU" = true ] ; then
               # Setup QEMU directory
               mkdir "${BASEDIR}/qemu"
               # Copy kernel image to QEMU directory
               install_readonly "${BOOT_DIR}/${KERNEL_IMAGE}" "${BASEDIR}/qemu/${KERNEL_IMAGE}"
               # Copy kernel config to QEMU directory
               install_readonly "${R}/boot/config-${KERNEL_VERSION}" "${BASEDIR}/qemu/config-${KERNEL_VERSION}"
               # Copy kernel dtbs to QEMU directory
               for dtb in "${BOOT_DIR}/"*.dtb ; do
                 if [ -f "${dtb}" ] ; then
                   install_readonly "${dtb}" "${BASEDIR}/qemu/"
                 fi
               done
               # Copy kernel overlays to QEMU directory
               if [ -d "${BOOT_DIR}/overlays" ] ; then
                 # Setup overlays dtbs directory
                 mkdir "${BASEDIR}/qemu/overlays"
                 for dtb in "${BOOT_DIR}/overlays/"*.dtbo ; do
                   if [ -f "${dtb}" ] ; then
                     install_readonly "${dtb}" "${BASEDIR}/qemu/overlays/"
                   fi
                 done
               fi
               # Copy u-boot files to QEMU directory
               if [ "$ENABLE_UBOOT" = true ] ; then
                 if [ -f "${BOOT_DIR}/u-boot.bin" ] ; then
                   install_readonly "${BOOT_DIR}/u-boot.bin" "${BASEDIR}/qemu/u-boot.bin"
                 fi
                 if [ -f "${BOOT_DIR}/uboot.mkimage" ] ; then
                   install_readonly "${BOOT_DIR}/uboot.mkimage" "${BASEDIR}/qemu/uboot.mkimage"
                 fi
                 if [ -f "${BOOT_DIR}/boot.scr" ] ; then
                   install_readonly "${BOOT_DIR}/boot.scr" "${BASEDIR}/qemu/boot.scr"
                 fi
               fi
               # Copy initramfs to QEMU directory
               if [ -f "${BOOT_DIR}/initramfs-${KERNEL_VERSION}" ] ; then
                 install_readonly "${BOOT_DIR}/initramfs-${KERNEL_VERSION}" "${BASEDIR}/qemu/initramfs-${KERNEL_VERSION}"
               fi
             fi
             # Calculate size of the chroot directory in KB
             CHROOT_SIZE=$(expr "$(du -s "${R}" | awk '{ print $1 }')")
             # Calculate the amount of needed 512 Byte sectors
             TABLE_SECTORS=$(expr 1 \* 1024 \* 1024 \/ 512)
             FRMW_SECTORS=$(expr 64 \* 1024 \* 1024 \/ 512)
             ROOT_OFFSET=$(expr "${TABLE_SECTORS}" + "${FRMW_SECTORS}")
             # The root partition is EXT4
             # This means more space than the actual used space of the chroot is used.
             # As overhead for journaling and reserved blocks 35% are added.
             ROOT_SECTORS=$(expr "$(expr "${CHROOT_SIZE}" + "${CHROOT_SIZE}" \/ 100 \* 35)" \* 1024 \/ 512)
             # Calculate required image size in 512 Byte sectors
             IMAGE_SECTORS=$(expr "${TABLE_SECTORS}" + "${FRMW_SECTORS}" + "${ROOT_SECTORS}")
             # Prepare image file
             if [ "$ENABLE_SPLITFS" = true ] ; then
               dd if=/dev/zero of="$IMAGE_NAME-frmw.img" bs=512 count="${TABLE_SECTORS}"
               dd if=/dev/zero of="$IMAGE_NAME-frmw.img" bs=512 count=0 seek="${FRMW_SECTORS}"
               dd if=/dev/zero of="$IMAGE_NAME-root.img" bs=512 count="${TABLE_SECTORS}"
               dd if=/dev/zero of="$IMAGE_NAME-root.img" bs=512 count=0 seek="${ROOT_SECTORS}"
               # Write firmware/boot partition tables
               sfdisk -q -L -uS -f "$IMAGE_NAME-frmw.img" 2> /dev/null << EOM
             ${TABLE_SECTORS},${FRMW_SECTORS},c,*
             EOM
               # Write root partition table
               sfdisk -q -L -uS -f "$IMAGE_NAME-root.img" 2> /dev/null << EOM
             ${TABLE_SECTORS},${ROOT_SECTORS},83
             EOM
               # Setup temporary loop devices
               FRMW_LOOP="$(losetup -o 1M --sizelimit 64M -f --show "$IMAGE_NAME"-frmw.img)"
               ROOT_LOOP="$(losetup -o 1M -f --show "$IMAGE_NAME"-root.img)"
             else # ENABLE_SPLITFS=false
               dd if=/dev/zero of="$IMAGE_NAME.img" bs=512 count="${TABLE_SECTORS}"
               dd if=/dev/zero of="$IMAGE_NAME.img" bs=512 count=0 seek="${IMAGE_SECTORS}"
               # Write partition table
               sfdisk -q -L -uS -f "$IMAGE_NAME.img" 2> /dev/null << EOM
             ${TABLE_SECTORS},${FRMW_SECTORS},c,*
             ${ROOT_OFFSET},${ROOT_SECTORS},83
             EOM
               # Setup temporary loop devices
               FRMW_LOOP="$(losetup -o 1M --sizelimit 64M -f --show "$IMAGE_NAME".img)"
               ROOT_LOOP="$(losetup -o 65M -f --show "$IMAGE_NAME".img)"
             fi
             if [ "$ENABLE_CRYPTFS" = true ] ; then
               # Create dummy ext4 fs
               mkfs.ext4 "$ROOT_LOOP"
               # Setup password keyfile
               touch .password
               chmod 600 .password
               echo -n ${CRYPTFS_PASSWORD} > .password
               # Initialize encrypted partition
               cryptsetup --verbose --debug -q luksFormat "${ROOT_LOOP}" -c "${CRYPTFS_CIPHER}" -h "${CRYPTFS_HASH}" -s "${CRYPTFS_XTSKEYSIZE}" .password
               # Open encrypted partition and setup mapping
               cryptsetup luksOpen "${ROOT_LOOP}" -d .password "${CRYPTFS_MAPPING}"
               # Secure delete password keyfile
               shred -zu .password
               # Update temporary loop device
               ROOT_LOOP="/dev/mapper/${CRYPTFS_MAPPING}"
               # Wipe encrypted partition (encryption cipher is used for randomness)
               dd if=/dev/zero of="${ROOT_LOOP}" bs=512 count="$(blockdev --getsz "${ROOT_LOOP}")"
             fi
             # Build filesystems
             mkfs.vfat "$FRMW_LOOP"
             mkfs.ext4 "$ROOT_LOOP"
             # Mount the temporary loop devices
             mkdir -p "$BUILDDIR/mount"
             mount "$ROOT_LOOP" "$BUILDDIR/mount"
             mkdir -p "$BUILDDIR/mount/boot/firmware"
             mount "$FRMW_LOOP" "$BUILDDIR/mount/boot/firmware"
             # Copy all files from the chroot to the loop device mount point directory
             rsync -a "${R}/" "$BUILDDIR/mount/"
             # Unmount all temporary loop devices and mount points
             cleanup
             # Create block map file(s) of image(s)
             if [ "$ENABLE_SPLITFS" = true ] ; then
               # Create block map files for "bmaptool"
               bmaptool create -o "$IMAGE_NAME-frmw.bmap" "$IMAGE_NAME-frmw.img"
               bmaptool create -o "$IMAGE_NAME-root.bmap" "$IMAGE_NAME-root.img"
               # Image was successfully created
               echo "$IMAGE_NAME-frmw.img ($(expr \( "${TABLE_SECTORS}" + "${FRMW_SECTORS}" \) \* 512 \/ 1024 \/ 1024)M)" ": successfully created"
               echo "$IMAGE_NAME-root.img ($(expr \( "${TABLE_SECTORS}" + "${ROOT_SECTORS}" \) \* 512 \/ 1024 \/ 1024)M)" ": successfully created"
             else
               # Create block map file for "bmaptool"
               bmaptool create -o "$IMAGE_NAME.bmap" "$IMAGE_NAME.img"
               # Image was successfully created
               echo "$IMAGE_NAME.img ($(expr \( "${TABLE_SECTORS}" + "${FRMW_SECTORS}" + "${ROOT_SECTORS}" \) \* 512 \/ 1024 \/ 1024)M)" ": successfully created"
               # Create qemu qcow2 image
               if [ "$ENABLE_QEMU" = true ] ; then
                 QEMU_IMAGE=${QEMU_IMAGE:=${BASEDIR}/qemu/${DATE}-${KERNEL_ARCH}-CURRENT-rpi${RPI_MODEL}-${RELEASE}-${RELEASE_ARCH}}
                 QEMU_SIZE=16G
                 qemu-img convert -f raw -O qcow2 "$IMAGE_NAME".img "$QEMU_IMAGE".qcow2
                 qemu-img resize "$QEMU_IMAGE".qcow2 $QEMU_SIZE
                 echo "$QEMU_IMAGE.qcow2 ($QEMU_SIZE)" ": successfully created"
               fi
             fi