Raspi2-3_GenImage Commit - r623:7473bd66aa57 · Collaboration Tremplin des Sciences

Merge remote-tracking branch 'origin/test' into test

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files/firstboot/23-restart-dphys-swapfile.sh created 644 +5 0

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	1	# Restart dphys-swapfile service if it exists
	2	logger -t "rc.firstboot" "Restarting dphys-swapfile"
	3
	4	systemctl enable dphys-swapfile
	5	systemctl restart dphys-swapfile

templates/rpi1buster~HEAD created 644 +4 0

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	1	# Configuration template file used by rpi23-gen-image.sh
	2	RPI_MODEL=3
	3	RELEASE=buster
	4	BUILD_KERNEL=true

templates/rpi1buster~test created 644 +4 0

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	1	# Configuration template file used by rpi23-gen-image.sh
	2	RPI_MODEL=3
	3	RELEASE=buster
	4	BUILD_KERNEL=true

templates/rpi3-stretch-arm64-4.14.y~HEAD created 644 +15 0

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	1	# Configuration template file used by rpi23-gen-image.sh
	2	# Debian Stretch using the Arm64 for kernel compilation and Debian distribution.
	3
	4	RPI_MODEL=3
	5	RELEASE=stretch
	6	BUILD_KERNEL=true
	7	KERNEL_ARCH=arm64
	8	RELEASE_ARCH=arm64
	9	CROSS_COMPILE=aarch64-linux-gnu-
	10	QEMU_BINARY=/usr/bin/qemu-aarch64-static
	11	KERNEL_DEFCONFIG=bcmrpi3_defconfig
	12	KERNEL_BIN_IMAGE=Image
	13	KERNEL_IMAGE=kernel8.img
	14	KERNEL_BRANCH=rpi-4.14.y
	15	ENABLE_WIRELESS=true

templates/rpi3-stretch-arm64-4.14.y~test created 644 +15 0

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	1	# Configuration template file used by rpi23-gen-image.sh
	2	# Debian Stretch using the Arm64 for kernel compilation and Debian distribution.
	3
	4	RPI_MODEL=3
	5	RELEASE=stretch
	6	BUILD_KERNEL=true
	7	KERNEL_ARCH=arm64
	8	RELEASE_ARCH=arm64
	9	CROSS_COMPILE=aarch64-linux-gnu-
	10	QEMU_BINARY=/usr/bin/qemu-aarch64-static
	11	KERNEL_DEFCONFIG=bcmrpi3_defconfig
	12	KERNEL_BIN_IMAGE=Image
	13	KERNEL_IMAGE=kernel8.img
	14	KERNEL_BRANCH=rpi-4.14.y
	15	ENABLE_WIRELESS=true

README-CN.md +1 -1

             ## 介绍
-            `rpi23-gen-image.sh` 是一个自动生成树莓派2/3系统镜像的脚本工具, 当前支持自动生成32位 armhf 架构的Debian, 发行版本`jessie`, `stretch` 和 `buster`. 树莓派3 64位镜像需要使用特定的配置参数 (```templates/rpi3-stretch-arm64-4.11.y```).
+            `rpi23-gen-image.sh` 是一个自动生成树莓派2/3系统镜像的脚本工具, 当前支持自动生成32位 armhf 架构的Debian, 发行版本`jessie`, `stretch` 和 `buster`. 树莓派3 64位镜像需要使用特定的配置参数 (```templates/rpi3-stretch-arm64-4.14.y```).
             ## 构建环境所依赖的包
             一定要安装好下列deb包, 他们是构建过程需要的核心包. 脚本会自动检查, 如果缺少,经用户确认后会自动安装.
               ```debootstrap debian-archive-keyring qemu-user-static binfmt-support dosfstools rsync bmap-tools whois git bc psmisc dbus sudo```
             推荐通过配置 `rpi23-gen-image.sh` 脚本编译安装最新的树莓派 Linux 内核, 对于树莓派3, 只能如此. 在构建系统上使用 ARM (armhf) 交叉编译工具链编译内核.
             脚本已经在Debian Liux `jessie` 和`stretch` 构建系统下使用默认的 `crossbuild-essential-armhf` 工具链进行过测试. 获取更多信息请查看 [Debian 交叉工具链 Wiki](https://wiki.debian.org/CrossToolchains) .
             如果使用Debian Linux `jessie` 构建系统, 先要添加交叉编译工具链的源 [Debian 交叉工具链仓库](http://emdebian.org/tools/debian/):
             ```
             echo "deb http://emdebian.org/tools/debian/ jessie main" > /etc/apt/sources.list.d/crosstools.list
             sudo -u nobody wget -O - http://emdebian.org/tools/debian/emdebian-toolchain-archive.key | apt-key add -
             dpkg --add-architecture armhf
             apt-get update
             ```
             ## 命令行参数
             脚本可以使用特定的命令行参数来允许或禁止操作系统的某些特性、服务和配置信息. 这些参数通过（简单）脚本变量传递给 `rpi23-gen-image.sh`. 不同于环境变量, （简单）脚本变量在调用`rpi23-gen-image.sh`的命令行前面定义.
             ##### 命令行示例:
             ```shell
             ENABLE_UBOOT=true ./rpi23-gen-image.sh
             ENABLE_CONSOLE=false ENABLE_IPV6=false ./rpi23-gen-image.sh
             ENABLE_WM=xfce4 ENABLE_FBTURBO=true ENABLE_MINBASE=true ./rpi23-gen-image.sh
             ENABLE_HARDNET=true ENABLE_IPTABLES=true /rpi23-gen-image.sh
             APT_SERVER=ftp.de.debian.org APT_PROXY="http://127.0.0.1:3142/" ./rpi23-gen-image.sh
             ENABLE_MINBASE=true ./rpi23-gen-image.sh
             BUILD_KERNEL=true ENABLE_MINBASE=true ENABLE_IPV6=false ./rpi23-gen-image.sh
             BUILD_KERNEL=true KERNELSRC_DIR=/tmp/linux ./rpi23-gen-image.sh
             ENABLE_MINBASE=true ENABLE_REDUCE=true ENABLE_MINGPU=true BUILD_KERNEL=true ./rpi23-gen-image.sh
             ENABLE_CRYPTFS=true CRYPTFS_PASSWORD=changeme EXPANDROOT=false ENABLE_MINBASE=true ENABLE_REDUCE=true ENABLE_MINGPU=true BUILD_KERNEL=true ./rpi23-gen-image.sh
             RELEASE=stretch BUILD_KERNEL=true ./rpi23-gen-image.sh
             RPI_MODEL=3 ENABLE_WIRELESS=true ENABLE_MINBASE=true BUILD_KERNEL=true ./rpi23-gen-image.sh
             RELEASE=stretch RPI_MODEL=3 ENABLE_WIRELESS=true ENABLE_MINBASE=true BUILD_KERNEL=true ./rpi23-gen-image.sh
             ```
             ## 参数模板文件
             为了避免冗长的命令行参数以及存储感兴趣的参数配置, `rpi23-gen-image.sh` 支持所谓的参数模板文件 (`CONFIG_TEMPLATE`=template). 这些文本文件位于 `./templates` 目录, 文件中含有将会使用的配置参数. 新的配置模板文件会被添加到 `./templates` 目录.
             ##### 命令行示例:
             ```shell
             CONFIG_TEMPLATE=rpi3stretch ./rpi23-gen-image.sh
             CONFIG_TEMPLATE=rpi2stretch ./rpi23-gen-image.sh
             ```
             ## 支持的参数和设置
             #### APT 设置:
             ##### `APT_SERVER`="ftp.debian.org"
             设置 Debian 仓库地址. 选择一个 [镜像站点](https://www.debian.org/mirror/list). 选一个近的镜像站点会加快镜像生成过程中所需文件的下载速度.
             ##### `APT_PROXY`=""
             设置代理服务器地址. 使用本地缓存代理, 比如 `apt-cacher-ng` 可以缩短镜像生成时间, 因为所需要的 Debian 包文件只需下载一次.
             ##### `APT_INCLUDES`=""
             生成镜像过程中最先由debootstrap程序自动安装的附加包, 逗号分隔.
             ##### `APT_INCLUDES_LATE`=""
             生成镜像过程中最初的debootstrap完成后, 需要的使用apt命令安装的附加包, 逗号分隔. 特别用在含有 pre-depend 依赖关系的包的, 其依赖关系在打包过程中debootstrap程序中无法正确处理.
             ---
             #### 通用系统设置:
             ##### `RPI_MODEL`=2
             指定树莓派型号. 当前支持树莓派 `2` 和 `3`. 设为 `3` 时 `BUILD_KERNEL` 自动设为true .
             ##### `RELEASE`="jessie"
             设置 Debian 发行版. 脚本当前支持 Debian 发行版 "jessie", "stretch" 和 "buster" 的自动生成. 设为`stretch` 或 `buster`时 `BUILD_KERNEL` 自动设为true.
             ##### `RELEASE_ARCH`="armhf"
             设置期望的 Debian 发行架构.
             ##### `HOSTNAME`="rpi$RPI_MODEL-$RELEASE"
             设置主机名称. 建议所在的子网中主机名称是唯一的.
             ##### `PASSWORD`="raspberry"
             设置系统的 `root` 用户密码.  **强烈**建议选择一个自定义密码 .
             ##### `USER_PASSWORD`="raspberry"
             设置由 `USER_NAME`=pi 参数创建的普通用户的密码.  如果 `ENABLE_USER`=false 则忽略. **强烈**建议选择一个自定义密码.
             ##### `DEFLOCAL`="en_US.UTF-8"
             设置系统默认 locale.  将来可以在运行的系统中执行 `dpkg-reconfigure locales` 命令更改此项设置. 设置这项脚本会自动安装 `locales`, `keyboard-configuration` 和 `console-setup` 三个包.
             ##### `TIMEZONE`="Europe/Berlin"
             设置系统默认时区.  可以在`/usr/share/zoneinfo/` 目录中找到全部可用时区. 将来可以在运行的系统中执行 `dpkg-reconfigure tzdata` 命令更改此项设置.
             ##### `EXPANDROOT`=true
             第一次运行时自动扩展根分区和文件系统.
             ---
             #### 键盘设置:
             这些选项用来配置键盘布局文件 `/etc/default/keyboard` 影响控制台和X窗口. 将来可以在运行的系统中执行 `dpkg-reconfigure keyboard-configuration` 命令更改此项设置.
             ##### `XKB_MODEL`=""
             设置键盘类型, 大陆常见pc104.
             ##### `XKB_LAYOUT`=""
             设置键盘布局, 大陆常见us.
             ##### `XKB_VARIANT`=""
             设置键盘布局变种.
             ##### `XKB_OPTIONS`=""
             设置其它 XKB 配置选项.
             ---
             #### 网络设置 (动态):
             设置网络为自动获取IP地址. 配置文件位于 `/etc/systemd/network/eth.network`. 在Debian `stretch`中, 默认位置更改为 `/lib/systemd/network`.
             ##### `ENABLE_DHCP`=true
             设置系统使用 DHCP 获取动态IP. 需要有一个 DHCP 服务器.
             ---
             #### 网络设置 (静态):
             设置系统为手动配置IP地址. 配置文件位于 `/etc/systemd/network/eth.network`. 在Debian `stretch` 中, 默认位置更改为 `/lib/systemd/network`.
             当 `ENABLE_DHCP`=false 时下面这些静态IP设置才起作用.
             ##### `NET_ADDRESS`=""
             设置静态 IPv4 或 IPv6, 使用CIDR "/"形式, 如 "192.169.0.3/24".
             ##### `NET_GATEWAY`=""
             设置默认网关的地址.
             ##### `NET_DNS_1`=""
             设置主域名服务器地址.
             ##### `NET_DNS_2`=""
             设置辅域名服务器地址.
             ##### `NET_DNS_DOMAINS`=""
             设置默认的域名搜索后缀, 当主机名称不是一个完整域名(FQDN)时使用.
             ##### `NET_NTP_1`=""
             设置主时间服务器地址.
             ##### `NET_NTP_2`=""
             设置辅时间服务器地址.
             ---
             #### 基本系统特性:
             ##### `ENABLE_CONSOLE`=true
             允许串行控制台接口. 没有连接显示器键盘的树莓派推荐打开, 此时如果网络无法连接至树莓派, 可以使用串行控制台连至系统.
             ##### `ENABLE_I2C`=false
             允许树莓派2/3的 I2C 接口. 请对照 [树莓派2/3 引脚示意图](https://elinux.org/RPi_Low-level_peripherals) 正确连接 GPIO 引脚.
             ##### `ENABLE_SPI`=false
             允许树莓派2/3的 SPI 接口. 请对照 [树莓派2/3 引脚示意图](https://elinux.org/RPi_Low-level_peripherals) 正确连接 GPIO 引脚.
             ##### `ENABLE_IPV6`=true
             允许 IPv6 . 通过 systemd-networkd 配置管理网络接口.
             ##### `ENABLE_SSHD`=true
             安装并且允许 OpenSSH 服务. 此服务默认禁止 `root` 用户远程登录. 使用普通用户 `pi` 远程登录然后使用 `su -` 或 `sudo` 来取得root权限.
             ##### `ENABLE_NONFREE`=false
             允许安装仓库中的 non-free 类的软件包. 需要安装闭源的固件, 二进制大对象 blob.
             ##### `ENABLE_WIRELESS`=false
             下载安装树莓派3无线接口所需要的闭源固件 二进制blob [树莓派3无线接口固件](https://github.com/RPi-Distro/firmware-nonfree/tree/master/brcm80211/brcm). 如果 `RPI_MODEL` 不是 `3` 则忽略.
             ##### `ENABLE_RSYSLOG`=true
             如果设置为 false, 禁用并卸载 rsyslog,  则只能通过日志文件查看logs.
             ##### `ENABLE_SOUND`=true
             允许声卡并且安装 ALSA.
             ##### `ENABLE_HWRANDOM`=true
             允许硬件随机数发生器. 强随机数对大多数使用加密的网络通信是非常重要的. 推荐允许此设置.
             ##### `ENABLE_MINGPU`=false
             最小化显存 (16MB, no X), 目前无法完全禁用GPU.
             ##### `ENABLE_DBUS`=true
             安装并允许 D-Bus 消息总线.  虽然 systemd 可以在没有 D-bus的情况下工作, 但是推荐允许D-Bus.
             ##### `ENABLE_XORG`=false
             是否安装 Xorg, 开源 X11 系统.
             ##### `ENABLE_WM`=""
             安装用户指定的X Window 窗口管理器. 如果设置了`ENABLE_WM`, 系统确定所有被依赖的X11相关软件包都安装好了以后`ENABLE_XORG`会自动设置为true,  `rpi23-gen-image.sh` 脚本已经通过下列窗口管理器的测试: `blackbox`, `openbox`, `fluxbox`, `jwm`, `dwm`, `xfce4`, `awesome`.
             ---
             #### 高级系统特性:
             ##### `ENABLE_MINBASE`=false
             使用 debootstrap 脚本变量 `minbase`, 只含有必不可少的核心包和apt. 体积大约 65 MB.
             ##### `ENABLE_REDUCE`=false
             卸载包、删除文件以减小体积 详情查看 `REDUCE_*` 参数.
             ##### `ENABLE_UBOOT`=false
             使用 [U-Boot 引导器](https://git.denx.de/?p=u-boot.git;a=summary) 替代树莓派2/3 默认的第二阶段引导器(bootcode.bin).  U-Boot 可以通过网络使用 BOOTP/TFTP 协议引导镜像文件.
             ##### `UBOOTSRC_DIR`=""
             存放已下载 [U-Boot 引导器源文件](https://git.denx.de/?p=u-boot.git;a=summary) 的目录(`u-boot`).
             ##### `ENABLE_FBTURBO`=false
             安装并且允许 [硬件加速的 Xorg 显卡驱动](https://github.com/ssvb/xf86-video-fbturbo) `fbturbo`. 当前仅支持窗口的移动和滚动的硬件加速.
             ##### `FBTURBOSRC_DIR`=""
             设置存放已下载的 [硬件加速的 Xorg 显卡驱动](https://github.com/ssvb/xf86-video-fbturbo) 的目录 (`xf86-video-fbturbo`) , 可以复制到chroot内配置、构建和安装.
             ##### `ENABLE_IPTABLES`=false
             允许 iptables 防火墙. 使用最简单的规则集: 允许所有出站连接;禁止除OpenSSH外的所有入站连接.
             ##### `ENABLE_USER`=true
             创建普通用户, 默认用户名`pi`, 默认密码raspberry.  可以使用 `USER_NAME`=user 更改默认用户名;使用 `USER_PASSWORD`=raspberry 更改默认密码.
             ##### `USER_NAME`=pi
             创建普通用户pi. 如果`ENABLE_USER`=false 此参数被忽略.
             ##### `ENABLE_ROOT`=false
             允许root用户登录, 需要设置 root 用户密码.
             ##### `ENABLE_HARDNET`=false
             允许加固 IPv4/IPv6 协议栈, 防止DoS攻击.
             ##### `ENABLE_SPLITFS`=false
             允许将根分区放在USB驱动器中. 将会生成两个镜像文件, 一个挂载为 `/boot/firmware` , 另一个挂载为 `/`.
             ##### `CHROOT_SCRIPTS`=""
             设置自定义脚本目录的路径, 该目录中的脚本在镜像文件构建完成之前在chroot中运行. 这个目录里的可执行文件按着字典序运行.
             ##### `ENABLE_INITRAMFS`=false
             创建 Linux 启动时加载的 initramfs .如果 `ENABLE_CRYPTFS`=true 那么 `ENABLE_INITRAMFS` 自动设为true . 如果 `BUILD_KERNEL`=false 此参数被忽略.
             ##### `ENABLE_IFNAMES`=true
             允许一致/可预测网络接口命名, 支持 Debian 发行版 `stretch` 或 `buster` .
             ##### `DISABLE_UNDERVOLT_WARNINGS`=
             禁止树莓派2/3 的低电压警告. 设为 `1` 禁止警告. 设为 `2` 额外允许低电压下的turbo增强模式.
             ---
             #### SSH 设置:
             ##### `SSH_ENABLE_ROOT`=false
             允许root通过密码验证方式远程登录系统. 如果没有修改默认密码, 这将是个巨大的安全隐患. `ENABLE_ROOT` 必须设为 `true`.
             ##### `SSH_DISABLE_PASSWORD_AUTH`=false
             禁用SSH的密码验证方式, 只支持SSH (v2)的公钥认证.
             ##### `SSH_LIMIT_USERS`=false
             限制通过SSH远程登录的用户. 只允许由 `USER_NAME`=pi 参数创建的普通用户, 以及当 `SSH_ENABLE_ROOT`=true 时 root 用户远程登录. 如果使用的守护程序是 `dropbear` (通过 `REDUCE_SSHD`=true 设置) 则忽略此参数.
             ##### `SSH_ROOT_PUB_KEY`=""
             从指定文件(可包含多个公钥)添加 SSH (v2) 公钥到 `authorized_keys` 文件, 使得 `root` 用户可以使用SSH (v2)的公钥验证方式远程登录, 不支持SSH (v1).  `ENABLE_ROOT` **和** `SSH_ENABLE_ROOT` 必须同时设为 `true`.
             ##### `SSH_USER_PUB_KEY`=""
             从指定文件(可包含多个公钥)添加 SSH (v2) 公钥到 `authorized_keys` 文件, 使得由 `USER_NAME`=pi 参数创建的普通用户可以使用SSH (v2)的公钥验证方式远程登录, 不支持SSH (v1).
             ---
             #### 内核编译:
             ##### `BUILD_KERNEL`=false
             构建安装最新的树莓派 2/3 Linux 内核, 当前只支持默认内核配置. 如果设置为树莓派`3`那么自动设置`BUILD_KERNEL`=true .
             ##### `CROSS_COMPILE`="arm-linux-gnueabihf-"
             设置交叉编译器.
             ##### `KERNEL_ARCH`="arm"
             设置内核架构.
             ##### `KERNEL_IMAGE`="kernel7.img"
             内核镜像名称, 如果没有设置, 编译32位内核默认“kernel7.img” 64位内核默认 "kernel8.img".
             ##### `KERNEL_BRANCH`=""
             GIT里的树莓派内核源代码分支名称, 默认使用当前默认分支.
             ##### `QEMU_BINARY`="/usr/bin/qemu-arm-static"
             设置构建系统中的QEMU程序位置. 如果没有设置, 32位内核默认 “/usr/bin/qemu-arm-static” 64位内核默认 "/usr/bin/qemu-aarch64-static".
             ##### `KERNEL_DEFCONFIG`="bcm2709_defconfig"
             设置编译内核的默认配置. 如果没有设置, 32位内核默认"bcm2709_defconfig" 64位内核默认"bcmrpi3\_defconfig".
             ##### `KERNEL_REDUCE`=false
             缩小内核体积, 移除不想要的设备驱动、网络驱动和文件系统驱动 (实验性质).
             ##### `KERNEL_THREADS`=1
             编译内核时的并发线程数量. 如果使用默认设置, 系统会自动检测CPU的内核数量, 设置线程数量, 加速内核编译.
             ##### `KERNEL_HEADERS`=true
             安装内核相应的头文件.
             ##### `KERNEL_MENUCONFIG`=false
             运行`make menuconfig`使用菜单界面配置内核. 退出配置菜单后脚本继续运行.
             ##### `KERNEL_REMOVESRC`=true
             编译安装完成后, 删掉内核源代码, 产生的镜像不含内核源代码.
             ##### `KERNELSRC_DIR`=""
             已下载好的 [Github上的树莓派官方内核](https://github.com/raspberrypi/linux) 源码所在目录 (`linux`) 的路径, 可以复制到chroot内配置、构建和安装.
             ##### `KERNELSRC_CLEAN`=false
             当`KERNELSRC_DIR`被复制到 chroot 之后开始编译之前(使用 `make mrproper`)清理内核源代码. 如果 `KERNELSRC_DIR` 没有设置或者 `KERNELSRC_PREBUILT`=true时忽略此设置.
             ##### `KERNELSRC_CONFIG`=true
             在编译前使用 `make bcm2709_defconfig` (也可以选择 `make menuconfig`) 配置内核源代码. 如果`KERNELSRC_DIR`指定的源码存放目录不存在,这个参数自动设为 `true`. 如果 `KERNELSRC_PREBUILT`=true 忽略此参数.
             ##### `KERNELSRC_USRCONFIG`=""
             复制自己的配置文件到内核的 `.config`. 如果 `KERNEL_MENUCONFIG`=true 拷贝完成后自动运行 make menuconfig.
             ##### `KERNELSRC_PREBUILT`=false
             如果这个参数设为true 表示内核源代码目录中包含成功交叉编译好的内核. 忽略 `KERNELSRC_CLEAN`, `KERNELSRC_CONFIG`, `KERNELSRC_USRCONFIG` and `KERNEL_MENUCONFIG` 这四个参数,不再执行交叉编译操作.
             ##### `RPI_FIRMWARE_DIR`=""
             指定目录 (`firmware`) 含有已经从 [Github上的树莓派官方固件](https://github.com/raspberrypi/firmware)下载到本地的固件. 默认直接从网上下载最新的固件.
             ---
             #### 缩小体积:
             如果 `ENABLE_REDUCE`=false 则忽略下列参数.
             ##### `REDUCE_APT`=true
             配置 APT,压缩仓库文件列表,不缓存下载的包文件.
             ##### `REDUCE_DOC`=true
             移除所有的doc文档文件(harsh). 配置 APT, 将来使用`apt-get`安装deb包时不包括doc文件.
             ##### `REDUCE_MAN`=true
             移除所有的man手册页和info文件 (harsh).  配置 APT, 将来使用`apt-get`安装deb包时不包括man手册页.
             ##### `REDUCE_VIM`=false
             使用vim的小型克隆 `levee` 替代 `vim-tiny`.
             ##### `REDUCE_BASH`=false
             使用 `dash` 代替 `bash` (实验性质).
             ##### `REDUCE_HWDB`=true
             移除与 PCI 相关的 hwdb 文件 (实验性质).
             ##### `REDUCE_SSHD`=true
             使用`dropbear`代替 `openssh-server`.
             ##### `REDUCE_LOCALE`=true
             移除所有的 `locale` 本地化文件.
             ---
             #### 加密根分区:
             ##### `ENABLE_CRYPTFS`=false
             使用dm-crypt进行全盘加密. 创建一个 LUKS 加密根分区 (加密方法 aes-xts-plain64:sha512) 并生成所需要的 initramfs.  /boot 目录不会被加密. 当`BUILD_KERNEL`=false时忽略此参数. `ENABLE_CRYPTFS` 这个参数当前是实验性质的. SSH-to-initramfs 当前不支持,正在进行中.
             ##### `CRYPTFS_PASSWORD`=""
             设置根分区的加密密码. 如果 `ENABLE_CRYPTFS`=true,请务必设置此参数.
             ##### `CRYPTFS_MAPPING`="secure"
             设置device-mapper映射名称.
             ##### `CRYPTFS_CIPHER`="aes-xts-plain64:sha512"
             加密算法. 推荐 `aes-xts*`加密法.
             ##### `CRYPTFS_XTSKEYSIZE`=512
             设置密钥长度,8的倍数,以bit为单位.
             ---
             #### Build settings构建设置:
             ##### `BASEDIR`=$(pwd)/images/${RELEASE}
             设置产生镜像的目录.
             ##### `IMAGE_NAME`=${BASEDIR}/${DATE}-${KERNEL_ARCH}-${KERNEL_BRANCH}-rpi${RPI_MODEL}-${RELEASE}-${RELEASE_ARCH}
             设置镜像文件名. 如果`ENABLE_SPLITFS`=false则文件名$IMAGE_NAME.img 如果`ENABLE_SPLITFS`=true则文件名$IMAGE_NAME-frmw.img 和 $IMAGE_NAME-root.img. 如果没有设置 `KERNEL_BRANCH` 则使用 "CURRENT" .
             ## 理解脚本
             制作镜像的每个阶段所实现的功能都由各自的脚本完成, 位于 `bootstrap.d` 目录. 按着字典序执行:
             | 脚本 | 说明 |
             | --- | --- |
             | `10-bootstrap.sh` | 生成基本系统 |
             | `11-apt.sh` | 设置 APT 仓库源 |
             | `12-locale.sh` | 设置 Locales 和 keyboard |
             | `13-kernel.sh` | 编译安装树莓派 2/3 内核 |
             | `14-fstab.sh` | 设置 fstab 和 initramfs |
             | `15-rpi-config.sh` | 设置 RPi2/3 config and cmdline |
             | `20-networking.sh` | 设置网络 |
             | `21-firewall.sh` | 设置防火墙 |
             | `30-security.sh` | 设置用户以及安全相关 |
             | `31-logging.sh` | 设置日志 |
             | `32-sshd.sh` | 设置 SSH 和公钥 |
             | `41-uboot.sh` | 编译设置 U-Boot |
             | `42-fbturbo.sh` | 编译设置 fbturbo Xorg 驱动 |
             | `50-firstboot.sh` | 首次启动执行的任务 |
             | `99-reduce.sh` | 缩小体积 |
             所有需要拷贝到镜像文件的配置文件都位于 `files` 目录. 最好不要手动更改这些配置文件.
             | 目录 | 说明 |
             | --- | --- |
             | `apt` | APT 管理配置文件 |
             | `boot` | 引导文件 树莓派2/3配置文件 |
             | `dpkg` | 包管理配置文件 |
             | `etc` | 配置文件以及 rc 启动脚本 |
             | `firstboot` | 首次引导执行的脚本  |
             | `initramfs` | Initramfs 脚本 |
             | `iptables` | 防火墙配置文件 |
             | `locales` | Locales 配置 |
             | `modules` | 内核模块配置 |
             | `mount` | Fstab 配置 |
             | `network` | 网络配置文件 |
             | `sysctl.d` | 交换文件以及IP协议加固配置文件 |
             | `xorg` | fbturbo Xorg 驱动配置 |
             ## 自定义包和脚本
              `packages` 目录里放置自定义deb包, 比如系统仓库里没有的软件.在安装完系统仓库中的包之后安装. 自定义包所依赖的deb包会自动从系统仓库下载. 不要把自定义包添加到 `APT_INCLUDES` 参数中.
              `custom.d` 目录中的脚本会在其它安装都完成后, 创建镜像文件之前执行.
             ## 记录镜像产生过程的信息
             所有镜像产生过程的信息、`rpi23-gen-image.sh` 脚本执行的命令都可以通过shell的 `script` 命令保存到日志文件中:
             ```shell
             script -c 'APT_SERVER=ftp.de.debian.org ./rpi23-gen-image.sh' ./build.log
             ```
             ## 烧录镜像文件
             `rpi23-gen-image.sh` 所生成的镜像文件需要使用 `bmaptool` 或 `dd` 烧录到 microSD 卡. `bmaptool` 速度快比 `dd` 聪明.
             ##### 烧录示例:
             ```shell
             bmaptool copy ./images/jessie/2017-01-23-rpi3-jessie.img /dev/mmcblk0
             dd bs=4M if=./images/jessie/2017-01-23-rpi3-jessie.img of=/dev/mmcblk0
             ```
             如果设置过 `ENABLE_SPLITFS`, 烧录 `-frmw` 文件到 microSD 卡, 烧录 `-root` 文件到 USB 驱动器:
             ```shell
             bmaptool copy ./images/jessie/2017-01-23-rpi3-jessie-frmw.img /dev/mmcblk0
             bmaptool copy ./images/jessie/2017-01-23-rpi3-jessie-root.img /dev/sdc
             ```
             ## 每周镜像
             这些镜像由JRWR'S I/O PORT提供, 每周日午夜UTC 0点编译!
             * [Debian Stretch Raspberry Pi2/3 周构建镜像](https://jrwr.io/doku.php?id=projects:debianpi)
             ## External links and references外部链接, 各种资源
             * [Debian 全世界镜像列表](https://www.debian.org/mirror/list)
             * [Debian 树莓派 2 Wiki](https://wiki.debian.org/RaspberryPi2)
             * [Debian 交叉工具链 Wiki](https://wiki.debian.org/CrossToolchains)
             * [Github上的树莓派官方固件](https://github.com/raspberrypi/firmware)
             * [Github上的树莓派官方内核](https://github.com/raspberrypi/linux)
             * [U-BOOT git 仓库](https://git.denx.de/?p=u-boot.git;a=summary)
             * [Xorg DDX fbturbo驱动](https://github.com/ssvb/xf86-video-fbturbo)
             * [树莓派3无线接口固件](https://github.com/RPi-Distro/firmware-nonfree/tree/master/brcm80211/brcm)
             * [Collabora 树莓派2预编译内核](https://repositories.collabora.co.uk/debian/)

README.md +6 -2

             # rpi23-gen-image
             ## Introduction
             `rpi23-gen-image.sh` is an advanced Debian Linux bootstrapping shell script for generating Debian OS images for all Raspberry Pi computers. The script at this time supports the bootstrapping of the Debian (armhf/armel) releases `stretch` and `buster`. Raspberry Pi 0/1/2/3 images are generated for 32-bit mode only. Raspberry Pi 3 supports 64-bit images that can be generated using custom configuration parameters (```templates/rpi3-stretch-arm64-4.14.y```).
             ## Build dependencies
             The following list of Debian packages must be installed on the build system because they are essentially required for the bootstrapping process. The script will check if all required packages are installed and missing packages will be installed automatically if confirmed by the user.
               ```debootstrap debian-archive-keyring qemu-user-static binfmt-support dosfstools rsync bmap-tools whois git bc psmisc dbus sudo```
             It is recommended to configure the `rpi23-gen-image.sh` script to build and install the latest Raspberry Pi Linux kernel. For the Raspberry 3 this is mandatory. Kernel compilation and linking will be performed on the build system using an ARM (armhf/armel) cross-compiler toolchain.
             The script has been tested using the default `crossbuild-essential-armhf` and `crossbuild-essential-armel` toolchain meta packages on Debian Linux `stretch` build systems. Please check the [Debian CrossToolchains Wiki](https://wiki.debian.org/CrossToolchains) for further information.
             ## Command-line parameters
             The script accepts certain command-line parameters to enable or disable specific OS features, services and configuration settings. These parameters are passed to the `rpi23-gen-image.sh` script via (simple) shell-variables. Unlike environment shell-variables (simple) shell-variables are defined at the beginning of the command-line call of the `rpi23-gen-image.sh` script.
             ##### Command-line examples:
             ```shell
             ENABLE_UBOOT=true ./rpi23-gen-image.sh
             ENABLE_CONSOLE=false ENABLE_IPV6=false ./rpi23-gen-image.sh
             ENABLE_WM=xfce4 ENABLE_FBTURBO=true ENABLE_MINBASE=true ./rpi23-gen-image.sh
             ENABLE_HARDNET=true ENABLE_IPTABLES=true /rpi23-gen-image.sh
             APT_SERVER=ftp.de.debian.org APT_PROXY="http://127.0.0.1:3142/" ./rpi23-gen-image.sh
             ENABLE_MINBASE=true ./rpi23-gen-image.sh
             BUILD_KERNEL=true ENABLE_MINBASE=true ENABLE_IPV6=false ./rpi23-gen-image.sh
             BUILD_KERNEL=true KERNELSRC_DIR=/tmp/linux ./rpi23-gen-image.sh
             ENABLE_MINBASE=true ENABLE_REDUCE=true ENABLE_MINGPU=true BUILD_KERNEL=true ./rpi23-gen-image.sh
             ENABLE_CRYPTFS=true CRYPTFS_PASSWORD=changeme EXPANDROOT=false ENABLE_MINBASE=true ENABLE_REDUCE=true ENABLE_MINGPU=true BUILD_KERNEL=true ./rpi23-gen-image.sh
             RELEASE=stretch BUILD_KERNEL=true ./rpi23-gen-image.sh
             RPI_MODEL=3 ENABLE_WIRELESS=true ENABLE_MINBASE=true BUILD_KERNEL=true ./rpi23-gen-image.sh
             RELEASE=stretch RPI_MODEL=3 ENABLE_WIRELESS=true ENABLE_MINBASE=true BUILD_KERNEL=true ./rpi23-gen-image.sh
             ```
             ## Configuration template files
             To avoid long lists of command-line parameters and to help to store the favourite parameter configurations the `rpi23-gen-image.sh` script supports so called configuration template files (`CONFIG_TEMPLATE`=template). These are simple text files located in the `./templates` directory that contain the list of configuration parameters that will be used. New configuration template files can be added to the `./templates` directory.
             ##### Command-line examples:
             ```shell
             CONFIG_TEMPLATE=rpi3stretch ./rpi23-gen-image.sh
             CONFIG_TEMPLATE=rpi2stretch ./rpi23-gen-image.sh
             ```
             ## Supported parameters and settings
             #### APT settings:
             ##### `APT_SERVER`="ftp.debian.org"
             Set Debian packages server address. Choose a server from the list of Debian worldwide [mirror sites](https://www.debian.org/mirror/list). Using a nearby server will probably speed-up all required downloads within the bootstrapping process.
             ##### `APT_PROXY`=""
             Set Proxy server address. Using a local Proxy-Cache like `apt-cacher-ng` will speed-up the bootstrapping process because all required Debian packages will only be downloaded from the Debian mirror site once. If `apt-cacher-ng` is running on default `http://127.0.0.1:3142` it is autodetected and you don't need to set this.
             ##### `KEEP_APT_PROXY`=false
             Keep the APT_PROXY settings used in the bootsrapping process in the generated image.
             ##### `APT_INCLUDES`=""
             A comma-separated list of additional packages to be installed by debootstrap during bootstrapping.
             ##### `APT_INCLUDES_LATE`=""
             A comma-separated list of additional packages to be installed by apt after bootstrapping and after APT sources are set up.  This is useful for packages with pre-depends, which debootstrap do not handle well.
             ---
             #### General system settings:
             ##### `SET_ARCH`=32
             Set Architecture to default 32bit. If you want to compile 64-bit (RPI3 or RPI3+) set it to `64`. This option will set every needed cross-compiler or board specific option for a successful build.
             ##### `RPI_MODEL`=2
             Specify the target Raspberry Pi hardware model. The script at this time supports the following Raspberry Pi models:
             - `0`  = Raspberry Pi 0 and Raspberry Pi 0 W
             - `1`  = Raspberry Pi 1 model A and B
             - `1P` = Raspberry Pi 1 model B+ and A+
             - `2`  = Raspberry Pi 2 model B
             - `3`  = Raspberry Pi 3 model B
             - `3P` = Raspberry Pi 3 model B+
             ##### `RELEASE`="buster"
             Set the desired Debian release name. The script at this time supports the bootstrapping of the Debian releases `stretch` and `buster`.
             ##### `RELEASE_ARCH`="armhf"
             Set the desired Debian release architecture.
             ##### `HOSTNAME`="rpi$RPI_MODEL-$RELEASE"
             Set system hostname. It's recommended that the hostname is unique in the corresponding subnet.
             ##### `PASSWORD`="raspberry"
             Set system `root` password. It's **STRONGLY** recommended that you choose a custom password.
             ##### `USER_PASSWORD`="raspberry"
             Set password for the created non-root user `USER_NAME`=pi. Ignored if `ENABLE_USER`=false. It's **STRONGLY** recommended that you choose a custom password.
             ##### `DEFLOCAL`="en_US.UTF-8"
             Set default system locale. This setting can also be changed inside the running OS using the `dpkg-reconfigure locales` command. Please note that on using this parameter the script will automatically install the required packages `locales`, `keyboard-configuration` and `console-setup`.
             ##### `TIMEZONE`="Europe/Berlin"
             Set default system timezone. All available timezones can be found in the `/usr/share/zoneinfo/` directory. This setting can also be changed inside the running OS using the `dpkg-reconfigure tzdata` command.
             ##### `EXPANDROOT`=true
             Expand the root partition and filesystem automatically on first boot.
+            ##### `ENABLE_DPHYSSWAP`=true
+            Enable swap. The size of the swapfile is chosen relative to the size of the root partition. It'll use the `dphys-swapfile` package for that.
             ##### `ENABLE_QEMU`=false
             Generate kernel (`vexpress_defconfig`), file system image (`qcow2`) and DTB files that can be used for QEMU full system emulation (`vexpress-A15`). The output files are stored in the `$(pwd)/images/qemu` directory. You can find more information about running the generated image in the QEMU section of this readme file.
             ---
             #### Keyboard settings:
             These options are used to configure keyboard layout in `/etc/default/keyboard` for console and Xorg. These settings can also be changed inside the running OS using the `dpkg-reconfigure keyboard-configuration` command.
             ##### `XKB_MODEL`=""
             Set the name of the model of your keyboard type.
             ##### `XKB_LAYOUT`=""
             Set the supported keyboard layout(s).
             ##### `XKB_VARIANT`=""
             Set the supported variant(s) of the keyboard layout(s).
             ##### `XKB_OPTIONS`=""
             Set extra xkb configuration options.
             ---
             #### Networking settings (DHCP):
             This parameter is used to set up networking auto-configuration in `/etc/systemd/network/eth.network`. The default location of network configuration files in the Debian `stretch` release was changed to `/lib/systemd/network`.`
             ##### `ENABLE_DHCP`=true
             Set the system to use DHCP. This requires an DHCP server.
             ---
             #### Networking settings (static):
             These parameters are used to set up a static networking configuration in `/etc/systemd/network/eth.network`. The following static networking parameters are only supported if `ENABLE_DHCP` was set to `false`. The default location of network configuration files in the Debian `stretch` release was changed to `/lib/systemd/network`.
             ##### `NET_ADDRESS`=""
             Set a static IPv4 or IPv6 address and its prefix, separated by "/", eg. "192.169.0.3/24".
             ##### `NET_GATEWAY`=""
             Set the IP address for the default gateway.
             ##### `NET_DNS_1`=""
             Set the IP address for the first DNS server.
             ##### `NET_DNS_2`=""
             Set the IP address for the second DNS server.
             ##### `NET_DNS_DOMAINS`=""
             Set the default DNS search domains to use for non fully qualified hostnames.
             ##### `NET_NTP_1`=""
             Set the IP address for the first NTP server.
             ##### `NET_NTP_2`=""
             Set the IP address for the second NTP server.
             ---
             #### Basic system features:
             ##### `ENABLE_CONSOLE`=true
             Enable serial console interface. Recommended if no monitor or keyboard is connected to the RPi2/3. In case of problems fe. if the network (auto) configuration failed - the serial console can be used to access the system. On RPI `0` `3` `3P` the CPU speed is locked at lowest speed.
             ##### `ENABLE_PRINTK`=false
             Enables printing kernel messages to konsole. printk is `3 4 1 3` as in raspbian.
             ##### `ENABLE_BLUETOOTH`=false
             Enable onboard Bluetooth interface on the RPi0/3/3P. See: [Configuring the GPIO serial port on Raspbian jessie and stretch](https://spellfoundry.com/2016/05/29/configuring-gpio-serial-port-raspbian-jessie-including-pi-3/).
             ##### `ENABLE_MINIUART_OVERLAY`=false
             Enable Bluetooth to use this. Adds overlay to swap UART0 with UART1. Enabling (slower) Bluetooth and full speed serial console. - RPI `0` `3` `3P` have a fast `hardware UART0` (ttyAMA0) and a `mini UART1` (ttyS0)! RPI `1` `1P` `2` only have a `hardware UART0`. `UART0` is considered better, because is faster and more stable than `mini UART1`. By default the Bluetooth modem is mapped to the `hardware UART0` and `mini UART` is used for console. The `mini UART` is a problem for the serial console, because its baudrate depends on the CPU frequency, which is changing on runtime. Resulting in a volatile baudrate and thus in an unusable serial console.
             ##### `ENABLE_TURBO`=false
             Enable Turbo mode. This setting locks cpu at the highest frequency. As setting ENABLE_CONSOLE=true locks RPI to lowest CPU speed, this is can be used additionally to lock cpu hat max speed. Need a good power supply and probably cooling for the Raspberry PI.
             ##### `ENABLE_I2C`=false
             Enable I2C interface on the RPi 0/1/2/3. Please check the [RPi 0/1/2/3 pinout diagrams](https://elinux.org/RPi_Low-level_peripherals) to connect the right GPIO pins.
             ##### `ENABLE_SPI`=false
             Enable SPI interface on the RPi 0/1/2/3. Please check the [RPi 0/1/2/3 pinout diagrams](https://elinux.org/RPi_Low-level_peripherals) to connect the right GPIO pins.
             ##### `ENABLE_IPV6`=true
             Enable IPv6 support. The network interface configuration is managed via systemd-networkd.
             ##### `ENABLE_SSHD`=true
             Install and enable OpenSSH service. The default configuration of the service doesn't allow `root` to login. Please use the user `pi` instead and `su -` or `sudo` to execute commands as root.
             ##### `ENABLE_NONFREE`=false
             Allow the installation of non-free Debian packages that do not comply with the DFSG. This is required to install closed-source firmware binary blobs.
             ##### `ENABLE_WIRELESS`=false
             Download and install the [closed-source firmware binary blob](https://github.com/RPi-Distro/firmware-nonfree/raw/master/brcm) that is required to run the internal wireless interface of the Raspberry Pi model `3`. This parameter is ignored if the specified `RPI_MODEL` is not `3`.
             ##### `ENABLE_RSYSLOG`=true
             If set to false, disable and uninstall rsyslog (so logs will be available only in journal files)
             ##### `ENABLE_SOUND`=true
             Enable sound hardware and install Advanced Linux Sound Architecture.
             ##### `ENABLE_HWRANDOM`=true
             Enable Hardware Random Number Generator. Strong random numbers are important for most network-based communications that use encryption. It's recommended to be enabled.
             ##### `ENABLE_MINGPU`=false
             Minimize the amount of shared memory reserved for the GPU. It doesn't seem to be possible to fully disable the GPU.
             ##### `ENABLE_DBUS`=true
             Install and enable D-Bus message bus. Please note that systemd should work without D-bus but it's recommended to be enabled.
             ##### `ENABLE_XORG`=false
             Install Xorg open-source X Window System.
             ##### `ENABLE_WM`=""
             Install a user-defined window manager for the X Window System. To make sure all X related package dependencies are getting installed `ENABLE_XORG` will automatically get enabled if `ENABLE_WM` is used. The `rpi23-gen-image.sh` script has been tested with the following list of window managers: `blackbox`, `openbox`, `fluxbox`, `jwm`, `dwm`, `xfce4`, `awesome`.
             ##### `ENABLE_SYSVINIT`=false
             Support for halt,init,poweroff,reboot,runlevel,shutdown,telinit commands
             ---
             #### Advanced system features:
             ##### `ENABLE_SYSTEMDSWAP`=false
             Enables [Systemd-swap service](https://github.com/Nefelim4ag/systemd-swap). Usefull if `KERNEL_ZSWAP` is enabled.
             ##### `ENABLE_MINBASE`=false
             Use debootstrap script variant `minbase` which only includes essential packages and apt. This will reduce the disk usage by about 65 MB.
             ##### `ENABLE_REDUCE`=false
             Reduce the disk space usage by deleting packages and files. See `REDUCE_*` parameters for detailed information.
             ##### `ENABLE_UBOOT`=false
             Replace the default RPi 0/1/2/3 second stage bootloader (bootcode.bin) with [U-Boot bootloader](https://git.denx.de/?p=u-boot.git;a=summary). U-Boot can boot images via the network using the BOOTP/TFTP protocol.
             ##### `UBOOTSRC_DIR`=""
             Path to a directory (`u-boot`) of [U-Boot bootloader sources](https://git.denx.de/?p=u-boot.git;a=summary) that will be copied, configured, build and installed inside the chroot.
             ##### `ENABLE_FBTURBO`=false
             Install and enable the [hardware accelerated Xorg video driver](https://github.com/ssvb/xf86-video-fbturbo) `fbturbo`. Please note that this driver is currently limited to hardware accelerated window moving and scrolling.
             ##### `FBTURBOSRC_DIR`=""
             Path to a directory (`xf86-video-fbturbo`) of [hardware accelerated Xorg video driver sources](https://github.com/ssvb/xf86-video-fbturbo) that will be copied, configured, build and installed inside the chroot.
             ##### `ENABLE_VIDEOCORE`=false
             Install and enable the [ARM side libraries for interfacing to Raspberry Pi GPU](https://github.com/raspberrypi/userland) `vcgencmd`. Please note that this driver is currently limited to hardware accelerated window moving and scrolling.
             ##### `VIDEOCORESRC_DIR`=""
             Path to a directory (`userland`) of [ARM side libraries for interfacing to Raspberry Pi GPU](https://github.com/raspberrypi/userland) that will be copied, configured, build and installed inside the chroot.
             ##### `ENABLE_NEXMON`=false
             Install and enable the [Source code for a C-based firmware patching framework for Broadcom/Cypress WiFi chips that enables you to write your own firmware patches, for example, to enable monitor mode with radiotap headers and frame injection](https://github.com/seemoo-lab/nexmon.git).
             ##### `NEXMONSRC_DIR`=""
             Path to a directory (`nexmon`) of [Source code for ARM side libraries for interfacing to Raspberry Pi GPU](https://github.com/raspberrypi/userland) that will be copied, configured, build and installed inside the chroot.
             ##### `ENABLE_IPTABLES`=false
             Enable iptables IPv4/IPv6 firewall. Simplified ruleset: Allow all outgoing connections. Block all incoming connections except to OpenSSH service.
             ##### `ENABLE_USER`=true
             Create non-root user with password `USER_PASSWORD`=raspberry. Unless overridden with `USER_NAME`=user, the username will be `pi`.
             ##### `USER_NAME`=pi
             Non-root user to create.  Ignored if `ENABLE_USER`=false
             ##### `ENABLE_ROOT`=false
             Set root user password so root login will be enabled
             ##### `ENABLE_HARDNET`=false
             Enable IPv4/IPv6 network stack hardening settings.
             ##### `ENABLE_SPLITFS`=false
             Enable having root partition on an USB drive by creating two image files: one for the `/boot/firmware` mount point, and another for `/`.
             ##### `CHROOT_SCRIPTS`=""
             Path to a directory with scripts that should be run in the chroot before the image is finally built. Every executable file in this directory is run in lexicographical order.
             ##### `ENABLE_INITRAMFS`=false
             Create an initramfs that that will be loaded during the Linux startup process. `ENABLE_INITRAMFS` will automatically get enabled if `ENABLE_CRYPTFS`=true. This parameter will be ignored if `BUILD_KERNEL`=false.
             ##### `ENABLE_IFNAMES`=true
             Enable automatic assignment of predictable, stable network interface names for all local Ethernet, WLAN interfaces. This might create complex and long interface names.
             ##### `ENABLE_SPLASH`=true
             Enable default Raspberry Pi boot up rainbow splash screen.
             ##### `ENABLE_LOGO`=true
             Enable default Raspberry Pi console logo (image of four raspberries in the top left corner).
             ##### `ENABLE_SILENT_BOOT`=false
             Set the verbosity of console messages shown during boot up to a strict minimum.
             ##### `DISABLE_UNDERVOLT_WARNINGS`=
             Disable RPi2/3 under-voltage warnings and overlays. Setting the parameter to `1` will disable the warning overlay. Setting it to `2` will additionally allow RPi2/3 turbo mode when low-voltage is present.
             ---
             #### SSH settings:
             ##### `SSH_ENABLE_ROOT`=false
             Enable password-based root login via SSH. This may be a security risk with the default password set, use only in trusted environments. `ENABLE_ROOT` must be set to `true`.
             ##### `SSH_DISABLE_PASSWORD_AUTH`=false
             Disable password-based SSH authentication. Only public key based SSH (v2) authentication will be supported.
             ##### `SSH_LIMIT_USERS`=false
             Limit the users that are allowed to login via SSH. Only allow user `USER_NAME`=pi and root if `SSH_ENABLE_ROOT`=true to login. This parameter will be ignored if `dropbear` SSH is used (`REDUCE_SSHD`=true).
             ##### `SSH_ROOT_PUB_KEY`=""
             Add SSH (v2) public key(s) from specified file to `authorized_keys` file to enable public key based SSH (v2) authentication of user `root`. The specified file can also contain multiple SSH (v2) public keys. SSH protocol version 1 is not supported. `ENABLE_ROOT` **and** `SSH_ENABLE_ROOT` must be set to `true`.
             ##### `SSH_USER_PUB_KEY`=""
             Add SSH (v2) public key(s) from specified file to `authorized_keys` file to enable public key based SSH (v2) authentication of user `USER_NAME`=pi. The specified file can also contain multiple SSH (v2) public keys. SSH protocol version 1 is not supported.
             ---
             #### Kernel compilation:
             ##### `BUILD_KERNEL`=true
             Build and install the latest RPi 0/1/2/3 Linux kernel. Currently only the default RPi 0/1/2/3 kernel configuration is used.
             ##### `CROSS_COMPILE`="arm-linux-gnueabihf-"
             This sets the cross-compile environment for the compiler.
             ##### `KERNEL_ARCH`="arm"
             This sets the kernel architecture for the compiler.
             ##### `KERNEL_IMAGE`="kernel7.img"
             Name of the image file in the boot partition. If not set, `KERNEL_IMAGE` will be set to "kernel8.img" automatically if building for arm64.
             ##### `KERNEL_BRANCH`=""
             Name of the requested branch from the GIT location for the RPi Kernel. Default is using the current default branch from the GIT site.
             ##### `QEMU_BINARY`="/usr/bin/qemu-arm-static"
             Sets the QEMU enviornment for the Debian archive. If not set, `QEMU_BINARY` will be set to "/usr/bin/qemu-aarch64-static" automatically if building for arm64.
             ##### `KERNEL_DEFCONFIG`="bcm2709_defconfig"
             Sets the default config for kernel compiling. If not set, `KERNEL_DEFCONFIG` will be set to "bcmrpi3\_defconfig" automatically if building for arm64.
             ##### `KERNEL_REDUCE`=false
             Reduce the size of the generated kernel by removing unwanted devices, network and filesystem drivers (experimental).
             ##### `KERNEL_THREADS`=1
             Number of parallel kernel building threads. If the parameter is left untouched the script will automatically determine the number of CPU cores to set the number of parallel threads to speed the kernel compilation.
             ##### `KERNEL_HEADERS`=true
             Install kernel headers with the built kernel.
             ##### `KERNEL_MENUCONFIG`=false
             Start `make menuconfig` interactive menu-driven kernel configuration. The script will continue after `make menuconfig` was terminated.
             ##### `KERNEL_OLDDEFCONFIG`=false
             Run `make olddefconfig` to automatically set all new kernel configuration options to their recommended default values.
             ##### `KERNEL_CCACHE`=false
             Compile the kernel using ccache. This speeds up kernel recompilation by caching previous compilations and detecting when the same compilation is being done again.
             ##### `KERNEL_REMOVESRC`=true
             Remove all kernel sources from the generated OS image after it was built and installed.
             ##### `KERNELSRC_DIR`=""
             Path to a directory (`linux`) of [RaspberryPi Linux kernel sources](https://github.com/raspberrypi/linux) that will be copied, configured, build and installed inside the chroot.
             ##### `KERNELSRC_CLEAN`=false
             Clean the existing kernel sources directory `KERNELSRC_DIR` (using `make mrproper`) after it was copied to the chroot and before the compilation of the kernel has started. This parameter will be ignored if no `KERNELSRC_DIR` was specified or if `KERNELSRC_PREBUILT`=true.
             ##### `KERNELSRC_CONFIG`=true
             Run `make bcm2709_defconfig` (and optional `make menuconfig`) to configure the kernel sources before building. This parameter is automatically set to `true` if no existing kernel sources directory was specified using `KERNELSRC_DIR`. This parameter is ignored if `KERNELSRC_PREBUILT`=true.
             ##### `KERNELSRC_USRCONFIG`=""
             Copy own config file to kernel `.config`. If `KERNEL_MENUCONFIG`=true then running after copy.
             ##### `KERNELSRC_PREBUILT`=false
             With this parameter set to true the script expects the existing kernel sources directory to be already successfully cross-compiled. The parameters `KERNELSRC_CLEAN`, `KERNELSRC_CONFIG`, `KERNELSRC_USRCONFIG` and `KERNEL_MENUCONFIG` are ignored and no kernel compilation tasks are performed.
             ##### `RPI_FIRMWARE_DIR`=""
             The directory (`firmware`) containing a local copy of the firmware from the [RaspberryPi firmware project](https://github.com/raspberrypi/firmware). Default is to download the latest firmware directly from the project.
             ##### `KERNEL_DEFAULT_GOV`="ONDEMAND"
             Set the default cpu governor at kernel compilation. Supported values are: PERFORMANCE POWERSAVE USERSPACE ONDEMAND CONSERVATIVE SCHEDUTIL
             ##### `KERNEL_NF`=false
             Enable Netfilter modules as kernel modules
             ##### `KERNEL_VIRT`=false
             Enable Kernel KVM support (/dev/kvm)
             ##### `KERNEL_ZSWAP`=false
             Enable Kernel Zswap support. Best use on high RAM load and mediocre CPU load usecases
             ##### `KERNEL_BPF`=true
             Allow attaching eBPF programs to a cgroup using the bpf syscall (CONFIG_BPF_SYSCALL CONFIG_CGROUP_BPF) [systemd compilations about it - File /lib/systemd/system/systemd-journald.server:36 configures an IP firewall (IPAddressDeny=all), but the local system does not support BPF/cgroup based firewalls]
             ##### `KERNEL_SECURITY`=false
-            Enables Apparmor, integrity subsystem, auditing
+            Enables Apparmor, integrity subsystem, auditing.
             ---
             #### Reduce disk usage:
             The following list of parameters is ignored if `ENABLE_REDUCE`=false.
             ##### `REDUCE_APT`=true
             Configure APT to use compressed package repository lists and no package caching files.
             ##### `REDUCE_DOC`=true
             Remove all doc files (harsh). Configure APT to not include doc files on future `apt-get` package installations.
             ##### `REDUCE_MAN`=true
             Remove all man pages and info files (harsh).  Configure APT to not include man pages on future `apt-get` package installations.
             ##### `REDUCE_VIM`=false
             Replace `vim-tiny` package by `levee` a tiny vim clone.
             ##### `REDUCE_BASH`=false
             Remove `bash` package and switch to `dash` shell (experimental).
             ##### `REDUCE_HWDB`=true
             Remove PCI related hwdb files (experimental).
             ##### `REDUCE_SSHD`=true
             Replace `openssh-server` with `dropbear`.
             ##### `REDUCE_LOCALE`=true
             Remove all `locale` translation files.
             ---
             #### Encrypted root partition:
             ##### `ENABLE_CRYPTFS`=false
             Enable full system encryption with dm-crypt. Setup a fully LUKS encrypted root partition (aes-xts-plain64:sha512) and generate required initramfs. The /boot directory will not be encrypted. This parameter will be ignored if `BUILD_KERNEL`=false. `ENABLE_CRYPTFS` is experimental. SSH-to-initramfs is currently not supported but will be soon - feel free to help.
             ##### `CRYPTFS_PASSWORD`=""
             Set password of the encrypted root partition. This parameter is mandatory if `ENABLE_CRYPTFS`=true.
             ##### `CRYPTFS_MAPPING`="secure"
             Set name of dm-crypt managed device-mapper mapping.
             ##### `CRYPTFS_CIPHER`="aes-xts-plain64:sha512"
             Set cipher specification string. `aes-xts*` ciphers are strongly recommended.
             ##### `CRYPTFS_XTSKEYSIZE`=512
             Sets key size in bits. The argument has to be a multiple of 8.
             ##### `CRYPTFS_DROPBEAR`=false
             Enable Dropbear Initramfs support
             ##### `CRYPTFS_DROPBEAR_PUBKEY`=""
             Provide path to dropbear Public RSA-OpenSSH Key
             ---
             #### Build settings:
             ##### `BASEDIR`=$(pwd)/images/${RELEASE}
             Set a path to a working directory used by the script to generate an image.
             ##### `IMAGE_NAME`=${BASEDIR}/${DATE}-${KERNEL_ARCH}-${KERNEL_BRANCH}-rpi${RPI_MODEL}-${RELEASE}-${RELEASE_ARCH}
             Set a filename for the output file(s). Note: the script will create $IMAGE_NAME.img if `ENABLE_SPLITFS`=false or $IMAGE_NAME-frmw.img and $IMAGE_NAME-root.img if `ENABLE_SPLITFS`=true. Note 2: If the KERNEL_BRANCH is not set, the word "CURRENT" is used.
             ## Understanding the script
             The functions of this script that are required for the different stages of the bootstrapping are split up into single files located inside the `bootstrap.d` directory. During the bootstrapping every script in this directory gets executed in lexicographical order:
             | Script | Description |
             | --- | --- |
             | `10-bootstrap.sh` | Debootstrap basic system |
             | `11-apt.sh` | Setup APT repositories |
             | `12-locale.sh` | Setup Locales and keyboard settings |
             | `13-kernel.sh` | Build and install RPi 0/1/2/3 Kernel |
             | `14-fstab.sh` | Setup fstab and initramfs |
             | `15-rpi-config.sh` | Setup RPi 0/1/2/3 config and cmdline |
             | `20-networking.sh` | Setup Networking |
             | `21-firewall.sh` | Setup Firewall |
             | `30-security.sh` | Setup Users and Security settings |
             | `31-logging.sh` | Setup Logging |
             | `32-sshd.sh` | Setup SSH and public keys |
             | `41-uboot.sh` | Build and Setup U-Boot |
             | `42-fbturbo.sh` | Build and Setup fbturbo Xorg driver |
             | `43-videocore.sh` | Build and Setup videocore libraries |
             | `50-firstboot.sh` | First boot actions |
             | `99-reduce.sh` | Reduce the disk space usage |
             All the required configuration files that will be copied to the generated OS image are located inside the `files` directory. It is not recommended to modify these configuration files manually.
             | Directory | Description |
             | --- | --- |
             | `apt` | APT management configuration files |
             | `boot` | Boot and RPi 0/1/2/3 configuration files |
             | `dpkg` | Package Manager configuration |
             | `etc` | Configuration files and rc scripts |
             | `firstboot` | Scripts that get executed on first boot  |
             | `initramfs` | Initramfs scripts |
             | `iptables` | Firewall configuration files |
             | `locales` | Locales configuration |
             | `modules` | Kernel Modules configuration |
             | `mount` | Fstab configuration |
             | `network` | Networking configuration files |
             | `sysctl.d` | Swapping and Network Hardening configuration |
             | `xorg` | fbturbo Xorg driver configuration |
             ## Custom packages and scripts
             Debian custom packages, i.e. those not in the debian repositories, can be installed by placing them in the `packages` directory. They are installed immediately after packages from the repositories are installed. Any dependencies listed in the custom packages will be downloaded automatically from the repositories. Do not list these custom packages in `APT_INCLUDES`.
             Scripts in the custom.d directory will be executed after all other installation is complete but before the image is created.
             ## Logging of the bootstrapping process
             All information related to the bootstrapping process and the commands executed by the `rpi23-gen-image.sh` script can easily be saved into a logfile. The common shell command `script` can be used for this purpose:
             ```shell
             script -c 'APT_SERVER=ftp.de.debian.org ./rpi23-gen-image.sh' ./build.log
             ```
             ## Flashing the image file
             After the image file was successfully created by the `rpi23-gen-image.sh` script it can be copied to the microSD card that will be used by the RPi 0/1/2/3 computer. This can be performed by using the tools `bmaptool` or `dd`. Using `bmaptool` will probably speed-up the copy process because `bmaptool` copies more wisely than `dd`.
             ##### Flashing examples:
             ```shell
             bmaptool copy ./images/buster/2017-01-23-rpi3-buster.img /dev/mmcblk0
             dd bs=4M if=./images/buster/2017-01-23-rpi3-buster.img of=/dev/mmcblk0
             ```
             If you have set `ENABLE_SPLITFS`, copy the `-frmw` image on the microSD card, then the `-root` one on the USB drive:
             ```shell
             bmaptool copy ./images/buster/2017-01-23-rpi3-buster-frmw.img /dev/mmcblk0
             bmaptool copy ./images/buster/2017-01-23-rpi3-buster-root.img /dev/sdc
             ```
             ## QEMU emulation
             Start QEMU full system emulation:
             ```shell
             qemu-system-arm -m 2048M -M vexpress-a15 -cpu cortex-a15 -kernel kernel7.img -no-reboot -dtb vexpress-v2p-ca15_a7.dtb -sd ${IMAGE_NAME}.qcow2 -append "root=/dev/mmcblk0p2 rw rootfstype=ext4 console=tty1"
             ```
             Start QEMU full system emulation and output to console:
             ```shell
             qemu-system-arm -m 2048M -M vexpress-a15 -cpu cortex-a15 -kernel kernel7.img -no-reboot -dtb vexpress-v2p-ca15_a7.dtb -sd ${IMAGE_NAME}.qcow2 -append "root=/dev/mmcblk0p2 rw rootfstype=ext4 console=ttyAMA0,115200 init=/bin/systemd" -serial stdio
             ```
             Start QEMU full system emulation with SMP and output to console:
             ```shell
             qemu-system-arm -m 2048M -M vexpress-a15 -cpu cortex-a15 -smp cpus=2,maxcpus=2 -kernel kernel7.img -no-reboot -dtb vexpress-v2p-ca15_a7.dtb -sd ${IMAGE_NAME}.qcow2 -append "root=/dev/mmcblk0p2 rw rootfstype=ext4 console=ttyAMA0,115200 init=/bin/systemd" -serial stdio
             ```
             Start QEMU full system emulation with cryptfs, initramfs and output to console:
             ```shell
             qemu-system-arm -m 2048M -M vexpress-a15 -cpu cortex-a15 -kernel kernel7.img -no-reboot -dtb vexpress-v2p-ca15_a7.dtb -sd ${IMAGE_NAME}.qcow2 -initrd "initramfs-${KERNEL_VERSION}" -append "root=/dev/mapper/secure cryptdevice=/dev/mmcblk0p2:secure rw rootfstype=ext4 console=ttyAMA0,115200 init=/bin/systemd" -serial stdio
             ```
             ## External links and references
             * [Debian worldwide mirror sites](https://www.debian.org/mirror/list)
             * [Debian Raspberry Pi 2 Wiki](https://wiki.debian.org/RaspberryPi2)
             * [Debian CrossToolchains Wiki](https://wiki.debian.org/CrossToolchains)
             * [Official Raspberry Pi Firmware on github](https://github.com/raspberrypi/firmware)
             * [Official Raspberry Pi Kernel on github](https://github.com/raspberrypi/linux)
             * [U-BOOT git repository](https://git.denx.de/?p=u-boot.git;a=summary)
             * [Xorg DDX driver fbturbo](https://github.com/ssvb/xf86-video-fbturbo)
-            * [RPi3 Wireless interface firmware](https://github.com/RPi-Distro/firmware-nonfree/tree/master/brcm80211/brcm)
+            * [RPi3 Wireless interface firmware](https://github.com/RPi-Distro/firmware-nonfree/tree/master/brcm)
             * [Collabora RPi2 Kernel precompiled](https://repositories.collabora.co.uk/debian/)

bootstrap.d/12-locale.sh +3 -3

             #
             # Setup Locales and keyboard settings
             #
             # Load utility functions
             . ./functions.sh
             # Install and setup timezone
             echo "${TIMEZONE}" > "${ETC_DIR}/timezone"
             if [ -f "${ETC_DIR}/localtime" ]; then
                 # 1. If 11-apt.sh upgrades the package 'tzdata', '/etc/localtime' was created
                 #    because 'dpkg-reconfigure -f noninteractive tzdata' was executed by apt-get.
                 # 2. If '/etc/localtime' exists, our execution of 'dpkg-reconfigure -f noninteractive tzdata'
                 #    will ignore the our timezone set in '/etc/timezone'.
                 # 3. Removing /etc/localtime will solve this.
                 rm -f "${ETC_DIR}/localtime"
             fi
             chroot_exec dpkg-reconfigure -f noninteractive tzdata
             # Install and setup default locale and keyboard configuration
             if [ "$(echo "$APT_INCLUDES" | grep ",locales")" ] ; then
               # Set locale choice in debconf db, even though dpkg-reconfigure ignores and overwrites them due to some bug
               # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=684134 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=685957
               # ... so we have to set locales manually
               if [ "$DEFLOCAL" = "en_US.UTF-8" ] ; then
-                chroot_exec echo "locales locales/locales_to_be_generated multiselect ${DEFLOCAL} UTF-8" | debconf-set-selections
+                chroot_exec echo "locales locales/locales_to_be_generated multiselect ${DEFLOCAL} UTF-8 | debconf-set-selections"
               else
                 # en_US.UTF-8 should be available anyway : https://www.debian.org/doc/manuals/debian-reference/ch08.en.html#_the_reconfiguration_of_the_locale
-                chroot_exec echo "locales locales/locales_to_be_generated multiselect en_US.UTF-8 UTF-8, ${DEFLOCAL} UTF-8" | debconf-set-selections
+                chroot_exec echo "locales locales/locales_to_be_generated multiselect en_US.UTF-8 UTF-8, ${DEFLOCAL} UTF-8 | debconf-set-selections"
                 sed -i "/en_US.UTF-8/s/^#//" "${ETC_DIR}/locale.gen"
               fi
               sed -i "/${DEFLOCAL}/s/^#//" "${ETC_DIR}/locale.gen"
-              chroot_exec echo "locales locales/default_environment_locale select ${DEFLOCAL}" | debconf-set-selections
+              chroot_exec echo "locales locales/default_environment_locale select ${DEFLOCAL} | debconf-set-selections"
               chroot_exec locale-gen
               chroot_exec update-locale LANG="${DEFLOCAL}"
               # Install and setup default keyboard configuration
               if [ "$XKB_MODEL" != "" ] ; then
                 sed -i "s/^XKBMODEL.*/XKBMODEL=\"${XKB_MODEL}\"/" "${ETC_DIR}/default/keyboard"
               fi
               if [ "$XKB_LAYOUT" != "" ] ; then
                 sed -i "s/^XKBLAYOUT.*/XKBLAYOUT=\"${XKB_LAYOUT}\"/" "${ETC_DIR}/default/keyboard"
               fi
               if [ "$XKB_VARIANT" != "" ] ; then
                 sed -i "s/^XKBVARIANT.*/XKBVARIANT=\"${XKB_VARIANT}\"/" "${ETC_DIR}/default/keyboard"
               fi
               if [ "$XKB_OPTIONS" != "" ] ; then
                 sed -i "s/^XKBOPTIONS.*/XKBOPTIONS=\"${XKB_OPTIONS}\"/" "${ETC_DIR}/default/keyboard"
               fi
               chroot_exec dpkg-reconfigure -f noninteractive keyboard-configuration
               # Install and setup font console
               case "${DEFLOCAL}" in
                 *UTF-8)
                   sed -i 's/^CHARMAP.*/CHARMAP="UTF-8"/' "${ETC_DIR}/default/console-setup"
                   ;;
                 *)
                   sed -i 's/^CHARMAP.*/CHARMAP="guess"/' "${ETC_DIR}/default/console-setup"
                   ;;
               esac
               chroot_exec dpkg-reconfigure -f noninteractive console-setup
             else # (no locales were installed)
               # Install POSIX default locale
               install_readonly files/locales/locale "${ETC_DIR}/default/locale"
             fi

bootstrap.d/13-kernel.sh +13 -5

             #
             # Build and Setup RPi2/3 Kernel
             #
             # Load utility functions
             . ./functions.sh
             # Need to use kali kernel src if nexmon is enabled
             if [ "$ENABLE_NEXMON" = true ] ; then
               KERNEL_URL="${KALI_KERNEL_URL}"
               # Clear Branch and KernelSRC_DIR if using nexmon. Everyone will forget to clone kali kernel instead of nomrla kernel
               KERNEL_BRANCH=""
               KERNELSRC_DIR=""
             fi
             # Fetch and build latest raspberry kernel
             if [ "$BUILD_KERNEL" = true ] ; then
               # Setup source directory
               mkdir -p "${KERNEL_DIR}"
               # Copy existing kernel sources into chroot directory
               if [ -n "$KERNELSRC_DIR" ] && [ -d "$KERNELSRC_DIR" ] ; then
                 # Copy kernel sources and include hidden files
                 cp -r "${KERNELSRC_DIR}/". "${KERNEL_DIR}"
                 # Clean the kernel sources
                 if [ "$KERNELSRC_CLEAN" = true ] && [ "$KERNELSRC_PREBUILT" = false ] ; then
                   make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" mrproper
                 fi
               else # KERNELSRC_DIR=""
                 # Create temporary directory for kernel sources
                 temp_dir=$(as_nobody mktemp -d)
                 # Fetch current RPi2/3 kernel sources
                 if [ -z "${KERNEL_BRANCH}" ] ; then
                   as_nobody -H git -C "${temp_dir}" clone --depth=1 "${KERNEL_URL}" linux
                 else
                   as_nobody -H git -C "${temp_dir}" clone --depth=1 --branch "${KERNEL_BRANCH}" "${KERNEL_URL}" linux
                 fi
                 # Copy downloaded kernel sources
                 cp -r "${temp_dir}/linux/"* "${KERNEL_DIR}"
                 # Remove temporary directory for kernel sources
                 rm -fr "${temp_dir}"
                 # Set permissions of the kernel sources
                 chown -R root:root "${R}/usr/src"
               fi
               # Calculate optimal number of kernel building threads
               if [ "$KERNEL_THREADS" = "1" ] && [ -r /proc/cpuinfo ] ; then
                 KERNEL_THREADS=$(grep -c processor /proc/cpuinfo)
               fi
               # Configure and build kernel
               if [ "$KERNELSRC_PREBUILT" = false ] ; then
                 # Remove device, network and filesystem drivers from kernel configuration
                 if [ "$KERNEL_REDUCE" = true ] ; then
                   make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" "${KERNEL_DEFCONFIG}"
                   sed -i\
                   -e "s/\(^CONFIG_SND.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_SOUND.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_AC97.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_VIDEO_.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_MEDIA_TUNER.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_DVB.*\=\)[ym]/\1n/"\
                   -e "s/\(^CONFIG_REISERFS.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_JFS.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_XFS.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_GFS2.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_OCFS2.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_BTRFS.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_HFS.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_JFFS2.*\=\)[ym]/\1n/"\
                   -e "s/\(^CONFIG_UBIFS.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_SQUASHFS.*\=\)[ym]/\1n/"\
                   -e "s/\(^CONFIG_W1.*\=\)[ym]/\1n/"\
                   -e "s/\(^CONFIG_HAMRADIO.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_CAN.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_IRDA.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_BT_.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_WIMAX.*\=\)[ym]/\1n/"\
                   -e "s/\(^CONFIG_6LOWPAN.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_IEEE802154.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_NFC.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_FB_TFT=.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_TOUCHSCREEN.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_USB_GSPCA_.*\=\).*/\1n/"\
                   -e "s/\(^CONFIG_DRM.*\=\).*/\1n/"\
                   "${KERNEL_DIR}/.config"
                 fi
                 if [ "$KERNELSRC_CONFIG" = true ] ; then
                   # Load default raspberry kernel configuration
                   make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" "${KERNEL_DEFCONFIG}"
                   #Switch to KERNELSRC_DIR so we can use set_kernel_config
                   cd "${KERNEL_DIR}" || exit
             	  if [ "$KERNEL_ARCH" = arm64 ] ; then
             	    #Fix SD_DRIVER upstream and downstream mess in 64bit RPIdeb_config
             	    # use correct driver MMC_BCM2835_MMC instead of MMC_BCM2835_SDHOST - see https://www.raspberrypi.org/forums/viewtopic.php?t=210225
             	    set_kernel_config CONFIG_MMC_BCM2835 n
             	    set_kernel_config CONFIG_MMC_SDHCI_IPROC n
             	    set_kernel_config CONFIG_USB_DWC2 n
             	    sed -i "s|depends on MMC_BCM2835_MMC && MMC_BCM2835_DMA|depends on MMC_BCM2835_MMC|" "${KERNEL_DIR}"/drivers/mmc/host/Kconfig
             	    #VLAN got disabled without reason in arm64bit
             	    set_kernel_config CONFIG_IPVLAN m
             	    #V4L2 sub-device userspace API
             	    #set_kernel_config CONFIG_VIDEO_V4L2_SUBDEV_API y
             		#VIDEO_MUX y
             		#VIDEO_XILINX n
             		#VIDEO_XILINX_TPG n
             		#VIDEO_ADV7180 m
             	    # GPIO-based bitbanging SPI Master
             	    set_kernel_config CONFIG_SPI_GPIO m
             	    #SPI Slave protocol
             	    set_kernel_config CONFIG_SPI_SLAVE y
             		set_kernel_config CONFIG_SPI_SLAVE_TIME m
             		set_kernel_config CONFIG_SPI_SLAVE_SYSTEM_CONTROL m
             	    # Virtual (secure) IP: tunneling
             	    set_kernel_config CONFIG_NET_IPVTI m
             	    #Wlan driver debug info
             	    set_kernel_config CONFIG_BRCMDBG m
             	    #GPIO WATCHDOG
             	    set_kernel_config CONFIG_GPIO_WATCHDOG m
             	    #Camera
             	    set_kernel_config VIDEO_BCM2835 m
             	    set_kernel_config VIDEO_BCM2835_UNICAM m
             	  fi
             	  # enable ZSWAP see https://askubuntu.com/a/472227 or https://wiki.archlinux.org/index.php/zswap
                   if [ "$KERNEL_ZSWAP" = true ] ; then
                     set_kernel_config CONFIG_ZPOOL y
                     set_kernel_config CONFIG_ZSWAP y
                     set_kernel_config CONFIG_ZBUD y
                     set_kernel_config CONFIG_Z3FOLD y
                     set_kernel_config CONFIG_ZSMALLOC y
                     set_kernel_config CONFIG_PGTABLE_MAPPING y
             		set_kernel_config CONFIG_LZO_COMPRESS y
             	  fi
                   # enable basic KVM support; see https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=210546&start=25#p1300453
             	  if [ "$KERNEL_VIRT" = true ] && { [ "$RPI_MODEL" = 2 ] || [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] ; } ; then
             		set_kernel_config CONFIG_HAVE_KVM_IRQCHIP y
                     set_kernel_config CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL y
                     set_kernel_config CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT y
                     set_kernel_config CONFIG_HAVE_KVM_EVENTFD y
                     set_kernel_config CONFIG_HAVE_KVM_IRQFD y
                     set_kernel_config CONFIG_HAVE_KVM_IRQ_ROUTING y
                     set_kernel_config CONFIG_HAVE_KVM_MSI y
                     set_kernel_config CONFIG_KVM y
                     set_kernel_config CONFIG_KVM_ARM_HOST y
                     set_kernel_config CONFIG_KVM_ARM_PMU y
                     set_kernel_config CONFIG_KVM_COMPAT y
                     set_kernel_config CONFIG_KVM_GENERIC_DIRTYLOG_READ_PROTECT y
                     set_kernel_config CONFIG_KVM_MMIO y
                     set_kernel_config CONFIG_KVM_VFIO y
                     set_kernel_config CONFIG_VHOST m
                     set_kernel_config CONFIG_VHOST_CROSS_ENDIAN_LEGACY y
                     set_kernel_config CONFIG_VHOST_NET m
                     set_kernel_config CONFIG_VIRTUALIZATION y
             		set_kernel_config CONFIG_MMU_NOTIFIER y
             		# erratum
             		set_kernel_config ARM64_ERRATUM_834220 y
             		# https://sourceforge.net/p/kvm/mailman/message/18440797/
             		set_kernel_config CONFIG_PREEMPT_NOTIFIERS y
             	  fi
                   # enable apparmor,integrity audit,
             	  if [ "$KERNEL_SECURITY" = true ] ; then
                     # security filesystem, security models and audit
                     set_kernel_config CONFIG_SECURITYFS y
                     set_kernel_config CONFIG_SECURITY y
                     set_kernel_config CONFIG_AUDIT y
                     # harden strcpy and memcpy
                     set_kernel_config CONFIG_HARDENED_USERCOPY y
                     set_kernel_config CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR y
                     set_kernel_config CONFIG_FORTIFY_SOURCE y
                     # integrity sub-system
                     set_kernel_config CONFIG_INTEGRITY y
                     set_kernel_config CONFIG_INTEGRITY_ASYMMETRIC_KEYS y
                     set_kernel_config CONFIG_INTEGRITY_AUDIT y
                     set_kernel_config CONFIG_INTEGRITY_SIGNATURE y
                     set_kernel_config CONFIG_INTEGRITY_TRUSTED_KEYRING y
                     # This option provides support for retaining authentication tokens and access keys in the kernel.
                     set_kernel_config CONFIG_KEYS y
                     set_kernel_config CONFIG_KEYS_COMPAT y
                     # Apparmor
                     set_kernel_config CONFIG_SECURITY_APPARMOR_BOOTPARAM_VALUE 0
                     set_kernel_config CONFIG_SECURITY_APPARMOR_HASH_DEFAULT y
                     set_kernel_config CONFIG_DEFAULT_SECURITY_APPARMOR y
                     set_kernel_config CONFIG_SECURITY_APPARMOR y
                     set_kernel_config CONFIG_SECURITY_APPARMOR_HASH y
                     set_kernel_config CONFIG_DEFAULT_SECURITY "apparmor"
                     # restrictions on unprivileged users reading the kernel
                     set_kernel_config CONFIG_SECURITY_DMESG_RESTRICT y
                     # network security hooks
                     set_kernel_config CONFIG_SECURITY_NETWORK y
                     set_kernel_config CONFIG_SECURITY_NETWORK_XFRM y
                     set_kernel_config CONFIG_SECURITY_PATH y
                     set_kernel_config CONFIG_SECURITY_YAMA n
                     # New Options
                     if [ "$KERNEL_NF" = true ] ; then
                       set_kernel_config CONFIG_IP_NF_SECURITY m
                       set_kernel_config CONFIG_NETLABEL y
                       set_kernel_config CONFIG_IP6_NF_SECURITY m
                     fi
                     set_kernel_config CONFIG_SECURITY_SELINUX n
                     set_kernel_config CONFIG_SECURITY_SMACK n
                     set_kernel_config CONFIG_SECURITY_TOMOYO n
                     set_kernel_config CONFIG_SECURITY_APPARMOR_DEBUG n
                     set_kernel_config CONFIG_SECURITY_LOADPIN n
                     set_kernel_config CONFIG_HARDENED_USERCOPY_PAGESPAN n
                     set_kernel_config CONFIG_IMA n
                     set_kernel_config CONFIG_EVM n
                     set_kernel_config CONFIG_FANOTIFY_ACCESS_PERMISSIONS y
                     set_kernel_config CONFIG_NFSD_V4_SECURITY_LABEL y
                     set_kernel_config CONFIG_PKCS7_MESSAGE_PARSER y
                     set_kernel_config CONFIG_SYSTEM_TRUSTED_KEYRING y
                     set_kernel_config CONFIG_SYSTEM_TRUSTED_KEYS y
                     set_kernel_config CONFIG_SYSTEM_EXTRA_CERTIFICATE y
                     set_kernel_config CONFIG_SECONDARY_TRUSTED_KEYRING y
                     set_kernel_config CONFIG_IMA_KEYRINGS_PERMIT_SIGNED_BY_BUILTIN_OR_SECONDARY n
             		set_kernel_config CONFIG_SYSTEM_TRUSTED_KEYS m
             		set_kernel_config CONFIG_SYSTEM_EXTRA_CERTIFICATE_SIZE 4096
                     set_kernel_config CONFIG_ARM64_CRYPTO y
                     set_kernel_config CONFIG_CRYPTO_SHA256_ARM64 m
                     set_kernel_config CONFIG_CRYPTO_SHA512_ARM64 m
                     set_kernel_config CONFIG_CRYPTO_SHA1_ARM64_CE m
                     set_kernel_config CRYPTO_GHASH_ARM64_CE m
                     set_kernel_config CRYPTO_SHA2_ARM64_CE m
                     set_kernel_config CONFIG_CRYPTO_CRCT10DIF_ARM64_CE m
                     set_kernel_config CONFIG_CRYPTO_CRC32_ARM64_CE m
                     set_kernel_config CONFIG_CRYPTO_AES_ARM64 m
                     set_kernel_config CONFIG_CRYPTO_AES_ARM64_CE m
                     set_kernel_config CONFIG_CRYPTO_AES_ARM64_CE_CCM y
                     set_kernel_config CONFIG_CRYPTO_AES_ARM64_CE_BLK y
                     set_kernel_config CONFIG_CRYPTO_AES_ARM64_NEON_BLK m
                     set_kernel_config CONFIG_CRYPTO_CHACHA20_NEON m
                     set_kernel_config CONFIG_CRYPTO_AES_ARM64_BS m
             		set_kernel_config SYSTEM_TRUSTED_KEYS
                   fi
                   # Netfilter kernel support See https://github.com/raspberrypi/linux/issues/2177#issuecomment-354647406
                   if [ "$KERNEL_NF" = true ] ; then
                     set_kernel_config CONFIG_IP_NF_TARGET_SYNPROXY m
                     set_kernel_config CONFIG_NETFILTER_XT_TARGET_AUDIT m
                     set_kernel_config CONFIG_NETFILTER_XT_MATCH_CGROUP m
                     set_kernel_config CONFIG_NETFILTER_XT_MATCH_IPCOMP m
                     set_kernel_config CONFIG_NETFILTER_XT_MATCH_SOCKET m
                     set_kernel_config CONFIG_NFT_FIB_INET m
                     set_kernel_config CONFIG_NFT_FIB_IPV4 m
                     set_kernel_config CONFIG_NFT_FIB_IPV6 m
                     set_kernel_config CONFIG_NFT_FIB_NETDEV m
                     set_kernel_config CONFIG_NFT_OBJREF m
                     set_kernel_config CONFIG_NFT_RT m
                     set_kernel_config CONFIG_NFT_SET_BITMAP m
                     set_kernel_config CONFIG_NF_CONNTRACK_TIMEOUT y
                     set_kernel_config CONFIG_NF_LOG_ARP m
                     set_kernel_config CONFIG_NF_SOCKET_IPV4 m
                     set_kernel_config CONFIG_NF_SOCKET_IPV6 m
                     set_kernel_config CONFIG_BRIDGE_EBT_BROUTE m
                     set_kernel_config CONFIG_BRIDGE_EBT_T_FILTER m
                     set_kernel_config CONFIG_BRIDGE_NF_EBTABLES m
                     set_kernel_config CONFIG_IP6_NF_IPTABLES m
                     set_kernel_config CONFIG_IP6_NF_MATCH_AH m
                     set_kernel_config CONFIG_IP6_NF_MATCH_EUI64 m
                     set_kernel_config CONFIG_IP6_NF_NAT m
                     set_kernel_config CONFIG_IP6_NF_TARGET_MASQUERADE m
                     set_kernel_config CONFIG_IP6_NF_TARGET_NPT m
                     set_kernel_config CONFIG_IP_NF_SECURITY m
                     set_kernel_config CONFIG_IP_SET_BITMAP_IPMAC m
                     set_kernel_config CONFIG_IP_SET_BITMAP_PORT m
                     set_kernel_config CONFIG_IP_SET_HASH_IP m
                     set_kernel_config CONFIG_IP_SET_HASH_IPMARK m
                     set_kernel_config CONFIG_IP_SET_HASH_IPPORT m
                     set_kernel_config CONFIG_IP_SET_HASH_IPPORTIP m
                     set_kernel_config CONFIG_IP_SET_HASH_IPPORTNET m
                     set_kernel_config CONFIG_IP_SET_HASH_MAC m
                     set_kernel_config CONFIG_IP_SET_HASH_NET m
                     set_kernel_config CONFIG_IP_SET_HASH_NETIFACE m
                     set_kernel_config CONFIG_IP_SET_HASH_NETNET m
                     set_kernel_config CONFIG_IP_SET_HASH_NETPORT m
                     set_kernel_config CONFIG_IP_SET_HASH_NETPORTNET m
                     set_kernel_config CONFIG_IP_SET_LIST_SET m
                     set_kernel_config CONFIG_NETFILTER_XTABLES m
                     set_kernel_config CONFIG_NETFILTER_XTABLES m
                     set_kernel_config CONFIG_NFT_BRIDGE_META m
                     set_kernel_config CONFIG_NFT_BRIDGE_REJECT m
                     set_kernel_config CONFIG_NFT_CHAIN_NAT_IPV4 m
                     set_kernel_config CONFIG_NFT_CHAIN_NAT_IPV6 m
                     set_kernel_config CONFIG_NFT_CHAIN_ROUTE_IPV4 m
                     set_kernel_config CONFIG_NFT_CHAIN_ROUTE_IPV6 m
                     set_kernel_config CONFIG_NFT_COMPAT m
                     set_kernel_config CONFIG_NFT_COUNTER m
                     set_kernel_config CONFIG_NFT_CT m
                     set_kernel_config CONFIG_NFT_DUP_IPV4 m
                     set_kernel_config CONFIG_NFT_DUP_IPV6 m
                     set_kernel_config CONFIG_NFT_DUP_NETDEV m
                     set_kernel_config CONFIG_NFT_EXTHDR m
                     set_kernel_config CONFIG_NFT_FWD_NETDEV m
                     set_kernel_config CONFIG_NFT_HASH m
                     set_kernel_config CONFIG_NFT_LIMIT m
                     set_kernel_config CONFIG_NFT_LOG m
                     set_kernel_config CONFIG_NFT_MASQ m
                     set_kernel_config CONFIG_NFT_MASQ_IPV4 m
                     set_kernel_config CONFIG_NFT_MASQ_IPV6 m
                     set_kernel_config CONFIG_NFT_META m
                     set_kernel_config CONFIG_NFT_NAT m
                     set_kernel_config CONFIG_NFT_NUMGEN m
                     set_kernel_config CONFIG_NFT_QUEUE m
                     set_kernel_config CONFIG_NFT_QUOTA m
                     set_kernel_config CONFIG_NFT_REDIR m
                     set_kernel_config CONFIG_NFT_REDIR_IPV4 m
                     set_kernel_config CONFIG_NFT_REDIR_IPV6 m
                     set_kernel_config CONFIG_NFT_REJECT m
                     set_kernel_config CONFIG_NFT_REJECT_INET m
                     set_kernel_config CONFIG_NFT_REJECT_IPV4 m
                     set_kernel_config CONFIG_NFT_REJECT_IPV6 m
                     set_kernel_config CONFIG_NFT_SET_HASH m
                     set_kernel_config CONFIG_NFT_SET_RBTREE m
                     set_kernel_config CONFIG_NF_CONNTRACK_IPV4 m
                     set_kernel_config CONFIG_NF_CONNTRACK_IPV6 m
                     set_kernel_config CONFIG_NF_DEFRAG_IPV4 m
                     set_kernel_config CONFIG_NF_DEFRAG_IPV6 m
                     set_kernel_config CONFIG_NF_DUP_IPV4 m
                     set_kernel_config CONFIG_NF_DUP_IPV6 m
                     set_kernel_config CONFIG_NF_DUP_NETDEV m
                     set_kernel_config CONFIG_NF_LOG_BRIDGE m
                     set_kernel_config CONFIG_NF_LOG_IPV4 m
                     set_kernel_config CONFIG_NF_LOG_IPV6 m
                     set_kernel_config CONFIG_NF_NAT_IPV4 m
                     set_kernel_config CONFIG_NF_NAT_IPV6 m
                     set_kernel_config CONFIG_NF_NAT_MASQUERADE_IPV4 m
                     set_kernel_config CONFIG_NF_NAT_MASQUERADE_IPV6 m
                     set_kernel_config CONFIG_NF_NAT_PPTP m
                     set_kernel_config CONFIG_NF_NAT_PROTO_GRE m
                     set_kernel_config CONFIG_NF_NAT_REDIRECT m
                     set_kernel_config CONFIG_NF_NAT_SIP m
                     set_kernel_config CONFIG_NF_NAT_SNMP_BASIC m
                     set_kernel_config CONFIG_NF_NAT_TFTP m
                     set_kernel_config CONFIG_NF_REJECT_IPV4 m
                     set_kernel_config CONFIG_NF_REJECT_IPV6 m
                     set_kernel_config CONFIG_NF_TABLES m
                     set_kernel_config CONFIG_NF_TABLES_ARP m
                     set_kernel_config CONFIG_NF_TABLES_BRIDGE m
                     set_kernel_config CONFIG_NF_TABLES_INET m
                     set_kernel_config CONFIG_NF_TABLES_IPV4 m
                     set_kernel_config CONFIG_NF_TABLES_IPV6 m
                     set_kernel_config CONFIG_NF_TABLES_NETDEV m
                   fi
             	  # Enables BPF syscall for systemd-journald see https://github.com/torvalds/linux/blob/master/init/Kconfig#L848 or https://groups.google.com/forum/#!topic/linux.gentoo.user/_2aSc_ztGpA
             	  if [ "$KERNEL_BPF" = true ] ; then
                     set_kernel_config CONFIG_BPF_SYSCALL y
             		set_kernel_config CONFIG_BPF_EVENTS y
             		set_kernel_config CONFIG_BPF_STREAM_PARSER y
             	    set_kernel_config CONFIG_CGROUP_BPF y
             	  fi
             	  # KERNEL_DEFAULT_GOV was set by user
             	  if [ "$KERNEL_DEFAULT_GOV" != powersave ] && [ -n "$KERNEL_DEFAULT_GOV" ] ; then
             	    case "$KERNEL_DEFAULT_GOV" in
                       performance)
             	        set_kernel_config CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE y
                         ;;
                       userspace)
                         set_kernel_config CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE y
                         ;;
                       ondemand)
             		    set_kernel_config CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND y
                         ;;
                       conservative)
             		    set_kernel_config CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE y
             		    ;;
                       shedutil)
             		    set_kernel_config CONFIG_CPU_FREQ_DEFAULT_GOV_SCHEDUTIL y
                         ;;
                       *)
                         echo "error: unsupported default cpu governor"
                         exit 1
                         ;;
                     esac
                         # unset previous default governor
             	    unset_kernel_config CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE
             	  fi
             	  #Revert to previous directory
             	  cd "${WORKDIR}" || exit
                   # Set kernel configuration parameters to enable qemu emulation
                   if [ "$ENABLE_QEMU" = true ] ; then
                     echo "CONFIG_FHANDLE=y" >> "${KERNEL_DIR}"/.config
                     echo "CONFIG_LBDAF=y" >> "${KERNEL_DIR}"/.config
                     if [ "$ENABLE_CRYPTFS" = true ] ; then
                       {
                         echo "CONFIG_EMBEDDED=y"
                         echo "CONFIG_EXPERT=y"
                         echo "CONFIG_DAX=y"
                         echo "CONFIG_MD=y"
                         echo "CONFIG_BLK_DEV_MD=y"
                         echo "CONFIG_MD_AUTODETECT=y"
                         echo "CONFIG_BLK_DEV_DM=y"
                         echo "CONFIG_BLK_DEV_DM_BUILTIN=y"
                         echo "CONFIG_DM_CRYPT=y"
                         echo "CONFIG_CRYPTO_BLKCIPHER=y"
                         echo "CONFIG_CRYPTO_CBC=y"
                         echo "CONFIG_CRYPTO_XTS=y"
                         echo "CONFIG_CRYPTO_SHA512=y"
                         echo "CONFIG_CRYPTO_MANAGER=y"
                       } >> "${KERNEL_DIR}"/.config
                     fi
                   fi
                   # Copy custom kernel configuration file
                   if [ -n "$KERNELSRC_USRCONFIG" ] ; then
                     cp "$KERNELSRC_USRCONFIG" "${KERNEL_DIR}"/.config
                   fi
                   # Set kernel configuration parameters to their default values
                   if [ "$KERNEL_OLDDEFCONFIG" = true ] ; then
                     make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" olddefconfig
                   fi
                   # Start menu-driven kernel configuration (interactive)
                   if [ "$KERNEL_MENUCONFIG" = true ] ; then
                     make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" menuconfig
                   fi
             	# end if "$KERNELSRC_CONFIG" = true
                 fi
                 # Use ccache to cross compile the kernel
                 if [ "$KERNEL_CCACHE" = true ] ; then
                   cc="ccache ${CROSS_COMPILE}gcc"
                 else
                   cc="${CROSS_COMPILE}gcc"
                 fi
                 # Cross compile kernel and dtbs
                 make -C "${KERNEL_DIR}" -j"${KERNEL_THREADS}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" CC="${cc}" "${KERNEL_BIN_IMAGE}" dtbs
                 # Cross compile kernel modules
                 if grep -q "CONFIG_MODULES=y" "${KERNEL_DIR}/.config" ; then
                   make -C "${KERNEL_DIR}" -j"${KERNEL_THREADS}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" CC="${cc}" modules
                 fi
               # end if "$KERNELSRC_PREBUILT" = false
               fi
               # Check if kernel compilation was successful
               if [ ! -r "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/${KERNEL_BIN_IMAGE}" ] ; then
                 echo "error: kernel compilation failed! (kernel image not found)"
                 cleanup
                 exit 1
               fi
               # Install kernel modules
               if [ "$ENABLE_REDUCE" = true ] ; then
                 if grep -q "CONFIG_MODULES=y" "${KERNEL_DIR}/.config" ; then
                   make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_MOD_STRIP=1 INSTALL_MOD_PATH=../../.. modules_install
                 fi
               else
                 if grep -q "CONFIG_MODULES=y" "${KERNEL_DIR}/.config" ; then
                   make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_MOD_PATH=../../.. modules_install
                 fi
                 # Install kernel firmware
                 if grep -q "^firmware_install:" "${KERNEL_DIR}/Makefile" ; then
                   make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_FW_PATH=../../../lib firmware_install
                 fi
               fi
               # Install kernel headers
               if [ "$KERNEL_HEADERS" = true ] && [ "$KERNEL_REDUCE" = false ] ; then
                 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_HDR_PATH=../.. headers_install
               fi
               # Prepare boot (firmware) directory
               mkdir "${BOOT_DIR}"
               # Get kernel release version
               KERNEL_VERSION=$(cat "${KERNEL_DIR}/include/config/kernel.release")
               # Copy kernel configuration file to the boot directory
               install_readonly "${KERNEL_DIR}/.config" "${R}/boot/config-${KERNEL_VERSION}"
               # Prepare device tree directory
               mkdir "${BOOT_DIR}/overlays"
               # Ensure the proper .dtb is located
               if [ "$KERNEL_ARCH" = "arm" ] ; then
                 for dtb in "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/"*.dtb ; do
                   if [ -f "${dtb}" ] ; then
                     install_readonly "${dtb}" "${BOOT_DIR}/"
                   fi
                 done
               else
                 for dtb in "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/broadcom/"*.dtb ; do
                   if [ -f "${dtb}" ] ; then
                     install_readonly "${dtb}" "${BOOT_DIR}/"
                   fi
                 done
               fi
               # Copy compiled dtb device tree files
               if [ -d "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/overlays" ] ; then
                 for dtb in "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/overlays/"*.dtbo ; do
                   if [ -f "${dtb}" ] ; then
                     install_readonly "${dtb}" "${BOOT_DIR}/overlays/"
                   fi
                 done
                 if [ -f "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/overlays/README" ] ; then
                   install_readonly "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/overlays/README" "${BOOT_DIR}/overlays/README"
                 fi
               fi
               if [ "$ENABLE_UBOOT" = false ] ; then
                 # Convert and copy kernel image to the boot directory
                 "${KERNEL_DIR}/scripts/mkknlimg" "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/${KERNEL_BIN_IMAGE}" "${BOOT_DIR}/${KERNEL_IMAGE}"
               else
                 # Copy kernel image to the boot directory
                 install_readonly "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/${KERNEL_BIN_IMAGE}" "${BOOT_DIR}/${KERNEL_IMAGE}"
               fi
               # Remove kernel sources
               if [ "$KERNEL_REMOVESRC" = true ] ; then
                 rm -fr "${KERNEL_DIR}"
               else
                 # Prepare compiled kernel modules
                 if grep -q "CONFIG_MODULES=y" "${KERNEL_DIR}/.config" ; then
                   if grep -q "^modules_prepare:" "${KERNEL_DIR}/Makefile" ; then
                     make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" modules_prepare
                   fi
                   # Create symlinks for kernel modules
                   chroot_exec ln -sf /usr/src/linux "/lib/modules/${KERNEL_VERSION}/build"
                   chroot_exec ln -sf /usr/src/linux "/lib/modules/${KERNEL_VERSION}/source"
                 fi
               fi
             else # BUILD_KERNEL=false
-              if [ "$SET_ARCH" = 64 ] && { [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] ; } ; then
+              if [ "$SET_ARCH" = 64 ]
+                if [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] ; then
             	  # Use Sakakis modified kernel if ZSWAP is active
                   if [ "$KERNEL_ZSWAP" = true ] || [ "$KERNEL_VIRT" = true ] || [ "$KERNEL_NF" = true ] || [ "$KERNEL_BPF" = true ] ; then
             	    RPI3_64_KERNEL_URL="${RPI3_64_BIS_KERNEL_URL}"
             	  fi
                   # Create temporary directory for dl
                   temp_dir=$(as_nobody mktemp -d)
                   # Fetch kernel dl
                   as_nobody wget -O "${temp_dir}"/kernel.tar.xz -c "$RPI3_64_KERNEL_URL"
+                fi
+                if [ "$SET_ARCH" = 64 ] && [ "$RPI_MODEL" = 4 ] ; then
+                  # Create temporary directory for dl
+                  temp_dir=$(as_nobody mktemp -d)
+                  # Fetch kernel dl
+                  as_nobody wget -O "${temp_dir}"/kernel.tar.xz -c "$RPI4_64_KERNEL_URL"
+                fi
             	#extract download
                 tar -xJf "${temp_dir}"/kernel.tar.xz -C "${temp_dir}"
                 #move extracted kernel to /boot/firmware
                 mkdir "${R}/boot/firmware"
                 cp "${temp_dir}"/boot/* "${R}"/boot/firmware/
                 cp -r "${temp_dir}"/lib/* "${R}"/lib/
                 # Remove temporary directory for kernel sources
                 rm -fr "${temp_dir}"
                 # Set permissions of the kernel sources
                 chown -R root:root "${R}/boot/firmware"
                 chown -R root:root "${R}/lib/modules"
               fi
-              # Install Kernel from hypriot comptabile with all Raspberry PI
+              # Install Kernel from hypriot comptabile with all Raspberry PI (dunno if its compatible with RPI4 - better compile your own kernel)
-              if [ "$SET_ARCH" = 32 ] ; then
+              if [ "$SET_ARCH" = 32 ] && [ "$RPI_MODEL" != 4 ] ; then
                 # Create temporary directory for dl
                 temp_dir=$(as_nobody mktemp -d)
                 # Fetch kernel
                 as_nobody wget -O "${temp_dir}"/kernel.deb -c "$RPI_32_KERNEL_URL"
-                # Copy downloaded U-Boot sources
+                # Copy downloaded kernel package
                 mv "${temp_dir}"/kernel.deb "${R}"/tmp/kernel.deb
                 # Set permissions
                 chown -R root:root "${R}"/tmp/kernel.deb
             	# Install kernel
             	chroot_exec dpkg -i /tmp/kernel.deb
             	# move /boot to /boot/firmware to fit script env.
             	#mkdir "${BOOT_DIR}"
             	mkdir "${temp_dir}"/firmware
             	mv  "${R}"/boot/* "${temp_dir}"/firmware/
             	mv "${temp_dir}"/firmware "${R}"/boot/
             	#same for kernel headers
             	if [ "$KERNEL_HEADERS" = true ] ; then
             	  # Fetch kernel header
             	  as_nobody wget -O "${temp_dir}"/kernel-header.deb -c "$RPI_32_KERNELHEADER_URL"
             	  mv "${temp_dir}"/kernel-header.deb "${R}"/tmp/kernel-header.deb
             	  chown -R root:root "${R}"/tmp/kernel-header.deb
             	  # Install kernel header
             	  chroot_exec dpkg -i /tmp/kernel-header.deb
             	  rm -f "${R}"/tmp/kernel-header.deb
             	fi
                 # Remove temporary directory and files
                 rm -fr "${temp_dir}"
             	rm -f "${R}"/tmp/kernel.deb
               fi
               # Check if kernel installation was successful
               KERNEL="$(ls -1 "${R}"/boot/firmware/kernel* | sort | tail -n 1)"
               if [ -z "$KERNEL" ] ; then
                 echo "error: kernel installation failed! (/boot/kernel* not found)"
                 cleanup
                 exit 1
               fi
             fi

bootstrap.d/15-rpi-config.sh +6 -1

             #
             # Setup RPi2/3 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
             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" "${FIRMWARE_URL}/start_x.elf"
               # Move downloaded boot binaries
               mv "${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
             if [ "$ENABLE_KEYGEN" = true ] ; then
             	# go to chroot/boot/
             	cd "${BOOT_DIR}/" || exit
             	# Make a copy of start.elf
             	cp start.elf start.elf_backup
             	# Remove codec licence checks - thx go to https://github.com/nucular/raspi-keygen - if ENABLE_VIDEOCORE is true, you can check codec status https://elinux.org/RPI_vcgencmd_usage
             	perl -pne 's/\x47\xE9362H\x3C\x18/\x47\xE9362H\x3C\x1F/g' < start.elf_backup > start.elf
             	# Back to base dir
             	cd "${WORKDIR}" || exit
             fi
             # Setup firmware boot cmdline
             if [ "$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_SLASH" = 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 ] || [ "$RPI_MODEL" = 3P ] ; then
+            if [ "$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" "${R}/tmp/"
                 # Bluetooth firmware from arch aur https://aur.archlinux.org/packages/pi-bluetooth/
                 as_nobody wget -q -O "${R}/tmp/pi-bluetooth/LICENCE.broadcom_bcm43xx" https://aur.archlinux.org/cgit/aur.git/plain/LICENCE.broadcom_bcm43xx?h=pi-bluetooth
                 as_nobody wget -q -O "${R}/tmp/pi-bluetooth/BCM43430A1.hcd" https://raw.githubusercontent.com/RPi-Distro/bluez-firmware/master/broadcom/BCM43430A1.hcd
                 # Set permissions
                 chown -R root:root "${R}/tmp/pi-bluetooth"
                 # 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"
               # 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 "${R}/tmp/systemd-swap" || exit
               # Build package
               bash ./package.sh debian
               # Change back into script root dir
               cd "${WORKDIR}" || exit
               # Set permissions of the systemd-swap sources
               chown -R root:root "${R}/tmp/systemd-swap"
               # Install package - IMPROVE AND MAKE IT POSSIBLE WITHOUT VERSION NR.
               chroot_exec dpkg -i /tmp/systemd-swap/systemd-swap_4.0.1_any.deb
               # Enable service
               chroot_exec systemctl enable systemd-swap
               # Remove temporary directory for systemd-swap sources
               rm -fr "${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 [ "$ENABLE_MINGPU" = true ] ; then
               echo "gpu_mem=16" >> "${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/" "${LIB_DIR}/modules-load.d/rpi2.conf"
               fi
             fi
             # Disable RPi2/3 under-voltage warnings
             if [ -n "$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"

bootstrap.d/20-networking.sh +1 -1

             #
             # Setup Networking
             #
             # Load utility functions
             . ./functions.sh
             # Install and setup hostname
             install_readonly files/network/hostname "${ETC_DIR}/hostname"
             sed -i "s/^RaspberryPI/${HOSTNAME}/" "${ETC_DIR}/hostname"
             # Install and setup hosts
             install_readonly files/network/hosts "${ETC_DIR}/hosts"
             sed -i "s/RaspberryPI/${HOSTNAME}/" "${ETC_DIR}/hosts"
             # Setup hostname entry with static IP
             if [ "$NET_ADDRESS" != "" ] ; then
               NET_IP=$(echo "${NET_ADDRESS}" | cut -f 1 -d'/')
               sed -i "s/^127.0.1.1/${NET_IP}/" "${ETC_DIR}/hosts"
             fi
             # Remove IPv6 hosts
             if [ "$ENABLE_IPV6" = false ] ; then
               sed -i -e "/::[1-9]/d" -e "/^$/d" "${ETC_DIR}/hosts"
             fi
             # Install hint about network configuration
             install_readonly files/network/interfaces "${ETC_DIR}/network/interfaces"
             # Install configuration for interface eth0
             install_readonly files/network/eth.network "${ETC_DIR}/systemd/network/eth.network"
             if [ "$RPI_MODEL" = 3P ] ; then
             printf "\n[Link]\nGenericReceiveOffload=off\nTCPSegmentationOffload=off\nGenericSegmentationOffload=off" >> "${ETC_DIR}/systemd/network/eth.network"
             fi
             # Install configuration for interface wl*
             install_readonly files/network/wlan.network "${ETC_DIR}/systemd/network/wlan.network"
             #always with dhcp since wpa_supplicant integration is missing
             sed -i -e "s/DHCP=.*/DHCP=yes/" -e "/DHCP/q" "${ETC_DIR}/systemd/network/wlan.network"
             if [ "$ENABLE_DHCP" = true ] ; then
               # Enable DHCP configuration for interface eth0
               sed -i -e "s/DHCP=.*/DHCP=yes/" -e "/DHCP/q" "${ETC_DIR}/systemd/network/eth.network"
               # Set DHCP configuration to IPv4 only
               if [ "$ENABLE_IPV6" = false ] ; then
                 sed -i "s/DHCP=.*/DHCP=v4/" "${ETC_DIR}/systemd/network/eth.network"
               fi
             else # ENABLE_DHCP=false
               # Set static network configuration for interface eth0
               sed -i\
               -e "s|DHCP=.*|DHCP=no|"\
               -e "s|Address=\$|Address=${NET_ADDRESS}|"\
               -e "s|Gateway=\$|Gateway=${NET_GATEWAY}|"\
               -e "0,/DNS=\$/ s|DNS=\$|DNS=${NET_DNS_1}|"\
               -e "0,/DNS=\$/ s|DNS=\$|DNS=${NET_DNS_2}|"\
               -e "s|Domains=\$|Domains=${NET_DNS_DOMAINS}|"\
               -e "0,/NTP=\$/ s|NTP=\$|NTP=${NET_NTP_1}|"\
               -e "0,/NTP=\$/ s|NTP=\$|NTP=${NET_NTP_2}|"\
               "${ETC_DIR}/systemd/network/eth.network"
             fi
             # Remove empty settings from network configuration
             sed -i "/.*=\$/d" "${ETC_DIR}/systemd/network/eth.network"
             # Remove empty settings from wlan configuration
             sed -i "/.*=\$/d" "${ETC_DIR}/systemd/network/wlan.network"
             # Move systemd network configuration if required by Debian release
             mv -v "${ETC_DIR}/systemd/network/eth.network" "${LIB_DIR}/systemd/network/10-eth.network"
             # If WLAN is enabled copy wlan configuration too
             if [ "$ENABLE_WIRELESS" = true ] ; then
               mv -v "${ETC_DIR}/systemd/network/wlan.network" "${LIB_DIR}/systemd/network/11-wlan.network"
             fi
             rm -fr "${ETC_DIR}/systemd/network"
             # Enable systemd-networkd service
             chroot_exec systemctl enable systemd-networkd
             # Install host.conf resolver configuration
             install_readonly files/network/host.conf "${ETC_DIR}/host.conf"
             # Enable network stack hardening
             if [ "$ENABLE_HARDNET" = true ] ; then
               # Install sysctl.d configuration files
               install_readonly files/sysctl.d/82-rpi-net-hardening.conf "${ETC_DIR}/sysctl.d/82-rpi-net-hardening.conf"
               # Setup resolver warnings about spoofed addresses
               sed -i "s/^# spoof warn/spoof warn/" "${ETC_DIR}/host.conf"
             fi
             # Enable time sync
             if [ "$NET_NTP_1" != "" ] ; then
               chroot_exec systemctl enable systemd-timesyncd.service
             fi
             # Download the firmware binary blob required to use the RPi3 wireless interface
             if [ "$ENABLE_WIRELESS" = true ] ; then
               if [ ! -d "${WLAN_FIRMWARE_DIR}" ] ; then
                 mkdir -p "${WLAN_FIRMWARE_DIR}"
               fi
               # Create temporary directory for firmware binary blob
               temp_dir=$(as_nobody mktemp -d)
               # Fetch firmware binary blob for RPI3B+
-              if [ "$RPI_MODEL" = 3P ] ; then
+              if [ "$RPI_MODEL" = 3P ] || [ "$RPI_MODEL" = 4 ] ; then
                 # Fetch firmware binary blob for RPi3P
                 as_nobody wget -q -O "${temp_dir}/brcmfmac43455-sdio.bin" "${WLAN_FIRMWARE_URL}/brcmfmac43455-sdio.bin"
                 as_nobody wget -q -O "${temp_dir}/brcmfmac43455-sdio.txt" "${WLAN_FIRMWARE_URL}/brcmfmac43455-sdio.txt"
                 as_nobody wget -q -O "${temp_dir}/brcmfmac43455-sdio.clm_blob" "${WLAN_FIRMWARE_URL}/brcmfmac43455-sdio.clm_blob"
             	# Move downloaded firmware binary blob
             	mv "${temp_dir}/brcmfmac43455-sdio."* "${WLAN_FIRMWARE_DIR}/"
             	# Set permissions of the firmware binary blob
             	chown root:root "${WLAN_FIRMWARE_DIR}/brcmfmac43455-sdio."*
                 chmod 600 "${WLAN_FIRMWARE_DIR}/brcmfmac43455-sdio."*
               elif [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 0 ] ; then
                 # Fetch firmware binary blob for RPi3
                 as_nobody wget -q -O "${temp_dir}/brcmfmac43430-sdio.bin" "${WLAN_FIRMWARE_URL}/brcmfmac43430-sdio.bin"
                 as_nobody wget -q -O "${temp_dir}/brcmfmac43430-sdio.txt" "${WLAN_FIRMWARE_URL}/brcmfmac43430-sdio.txt"
             	# Move downloaded firmware binary blob
             	mv "${temp_dir}/brcmfmac43430-sdio."* "${WLAN_FIRMWARE_DIR}/"
             	# Set permissions of the firmware binary blob
             	chown root:root "${WLAN_FIRMWARE_DIR}/brcmfmac43430-sdio."*
                 chmod 600 "${WLAN_FIRMWARE_DIR}/brcmfmac43430-sdio."*
               fi
               # Remove temporary directory for firmware binary blob
               rm -fr "${temp_dir}"
             fi

bootstrap.d/44-nexmon_monitor_patch.sh +1 -1

             #!/bin/sh
             #
             # Build and Setup nexmon with monitor mode patch
             #
             # Load utility functions
             . ./functions.sh
             if [ "$ENABLE_NEXMON" = true ] && [ "$ENABLE_WIRELESS" = true ]; then
               # Copy existing nexmon sources into chroot directory
               if [ -n "$NEXMONSRC_DIR" ] && [ -d "$NEXMONSRC_DIR" ] ; then
                 # Copy local U-Boot sources
                 cp -r "${NEXMONSRC_DIR}" "${R}/tmp"
               else
                 # Create temporary directory for nexmon sources
                 temp_dir=$(as_nobody mktemp -d)
                 # Fetch nexmon sources
                 as_nobody git -C "${temp_dir}" clone "${NEXMON_URL}"
                 # Copy downloaded nexmon sources
                 mv "${temp_dir}/nexmon" "${R}"/tmp/
                 # Set permissions of the nexmon sources
                 chown -R root:root "${R}"/tmp/nexmon
                 # Remove temporary directory for nexmon sources
                 rm -fr "${temp_dir}"
               fi
               # Set script Root
               export NEXMON_ROOT="${R}"/tmp/nexmon
               # Build nexmon firmware outside the build system, if we can.
               cd "${NEXMON_ROOT}" || exit
               # Make ancient isl build
               cd buildtools/isl-0.10 || exit
               ./configure
               make
               cd ../.. || exit
               # Disable statistics
               touch DISABLE_STATISTICS
               # Setup Enviroment: see https://github.com/NoobieDog/nexmon/blob/master/setup_env.sh
               export KERNEL="${KERNEL_IMAGE}"
               export ARCH=arm
               export SUBARCH=arm
               export CC="${NEXMON_ROOT}"/buildtools/gcc-arm-none-eabi-5_4-2016q2-linux-x86/bin/arm-none-eabi-
               export CC="${CC}"gcc
               export CCPLUGIN="${NEXMON_ROOT}"/buildtools/gcc-nexmon-plugin/nexmon.so
               export ZLIBFLATE="zlib-flate -compress"
               export Q=@
               export NEXMON_SETUP_ENV=1
               export HOSTUNAME=$(uname -s)
               export PLATFORMUNAME=$(uname -m)
               # Make nexmon
               make
               # build patches
               if [ "$RPI_MODEL" = 0 ] || [ "$RPI_MODEL" = 3 ] ; then
                 cd "${NEXMON_ROOT}"/patches/bcm43430a1/7_45_41_46/nexmon || exit
             	sed -i -e 's/all:.*/all: $(RAM_FILE)/g' ${NEXMON_ROOT}/patches/bcm43430a1/7_45_41_46/nexmon/Makefile
                 make clean
                 # We do this so we don't have to install the ancient isl version into /usr/local/lib on systems.
                 LD_LIBRARY_PATH="${NEXMON_ROOT}"/buildtools/isl-0.10/.libs make ARCH="${KERNEL_ARCH}" CC="${NEXMON_ROOT}"/buildtools/gcc-arm-none-eabi-5_4-2016q2-linux-x86/bin/arm-none-eabi-
                 # copy RPi0W & RPi3 firmware
             	mv "${WLAN_FIRMWARE_DIR}"/brcmfmac43430-sdio.bin "${WLAN_FIRMWARE_DIR}"/brcmfmac43430-sdio.org.bin
                 cp "${NEXMON_ROOT}"/patches/bcm43430a1/7_45_41_46/nexmon/brcmfmac43430-sdio.bin "${WLAN_FIRMWARE_DIR}"/brcmfmac43430-sdio.nexmon.bin
                 cp -f "${NEXMON_ROOT}"/patches/bcm43430a1/7_45_41_46/nexmon/brcmfmac43430-sdio.bin "${WLAN_FIRMWARE_DIR}"/brcmfmac43430-sdio.bin
               fi
-              if [ "$RPI_MODEL" = 3P ] ; then
+              if [ "$RPI_MODEL" = 3P ] || [ "$RPI_MODEL" = 4 ] ; then
                 cd "${NEXMON_ROOT}"/patches/bcm43455c0/7_45_154/nexmon || exit
             	sed -i -e 's/all:.*/all: $(RAM_FILE)/g' ${NEXMON_ROOT}/patches/bcm43455c0/7_45_154/nexmon/Makefile
                 make clean
             	# We do this so we don't have to install the ancient isl version into /usr/local/lib on systems.
                 LD_LIBRARY_PATH=${NEXMON_ROOT}/buildtools/isl-0.10/.libs make ARCH="${KERNEL_ARCH}" CC="${NEXMON_ROOT}"/buildtools/gcc-arm-none-eabi-5_4-2016q2-linux-x86/bin/arm-none-eabi-
                 # RPi3B+ firmware
             	mv "${WLAN_FIRMWARE_DIR}"/brcmfmac43455-sdio.bin "${WLAN_FIRMWARE_DIR}"/brcmfmac43455-sdio.org.bin
                 cp "${NEXMON_ROOT}"/patches/bcm43455c0/7_45_154/nexmon/brcmfmac43455-sdio.bin "${WLAN_FIRMWARE_DIR}"/brcmfmac43455-sdio.nexmon.bin
                 cp -f "${NEXMON_ROOT}"/patches/bcm43455c0/7_45_154/nexmon/brcmfmac43455-sdio.bin "${WLAN_FIRMWARE_DIR}"/brcmfmac43455-sdio.bin
               fi
             #Revert to previous directory
             cd "${WORKDIR}" || exit
             # Remove nexmon sources
             rm -fr "${NEXMON_ROOT}"
             fi

bootstrap.d/50-firstboot.sh +15 -10

             #
             # First boot actions
             #
             # Load utility functions
             . ./functions.sh
             # Prepare rc.firstboot script
             cat files/firstboot/10-begin.sh > "${ETC_DIR}/rc.firstboot"
-            # Ensure openssh server host keys are regenerated on first boot
-            if [ "$ENABLE_SSHD" = true ] ; then
-              cat files/firstboot/21-generate-ssh-keys.sh >> "${ETC_DIR}/rc.firstboot"
-            fi
             # Prepare filesystem auto expand
             if [ "$EXPANDROOT" = true ] ; then
               if [ "$ENABLE_CRYPTFS" = false ] ; then
-                cat files/firstboot/22-expandroot.sh >> "${ETC_DIR}/rc.firstboot"
+                cat files/firstboot/20-expandroot.sh >> "${ETC_DIR}/rc.firstboot"
               else
                 # Regenerate initramfs to remove encrypted root partition auto expand
-                cat files/firstboot/23-regenerate-initramfs.sh >> "${ETC_DIR}/rc.firstboot"
+                cat files/firstboot/21-regenerate-initramfs.sh >> "${ETC_DIR}/rc.firstboot"
+              fi
+              # Restart dphys-swapfile so the size of the swap file is relative to the resized root partition
+              if [ "$ENABLE_DPHYSSWAP" = true ] ; then
+                cat files/firstboot/23-restart-dphys-swapfile.sh >> "${ETC_DIR}/rc.firstboot"
+              fi
             fi
+            # Ensure openssh server host keys are regenerated on first boot
+            if [ "$ENABLE_SSHD" = true ] ; then
+              cat files/firstboot/30-generate-ssh-keys.sh >> "${ETC_DIR}/rc.firstboot"
             fi
             # Ensure that dbus machine-id exists
-            cat files/firstboot/24-generate-machineid.sh >> "${ETC_DIR}/rc.firstboot"
+            cat files/firstboot/40-generate-machineid.sh >> "${ETC_DIR}/rc.firstboot"
             # Create /etc/resolv.conf symlink
-            cat files/firstboot/25-create-resolv-symlink.sh >> "${ETC_DIR}/rc.firstboot"
+            cat files/firstboot/41-create-resolv-symlink.sh >> "${ETC_DIR}/rc.firstboot"
             # Configure automatic network interface names
             if [ "$ENABLE_IFNAMES" = true ] ; then
-              cat files/firstboot/26-config-ifnames.sh >> "${ETC_DIR}/rc.firstboot"
+              cat files/firstboot/42-config-ifnames.sh >> "${ETC_DIR}/rc.firstboot"
             fi
             # Finalize rc.firstboot script
             cat files/firstboot/99-finish.sh >> "${ETC_DIR}/rc.firstboot"
             chmod +x "${ETC_DIR}/rc.firstboot"
             # Install default rc.local if it does not exist
             if [ ! -f "${ETC_DIR}/rc.local" ] ; then
               install_exec files/etc/rc.local "${ETC_DIR}/rc.local"
             fi
             # Add rc.firstboot script to rc.local
             sed -i '/exit 0/d' "${ETC_DIR}/rc.local"
             echo /etc/rc.firstboot >> "${ETC_DIR}/rc.local"
             echo exit 0 >> "${ETC_DIR}/rc.local"

files/firstboot/20-expandroot.sh ~~files/firstboot/22-expandroot.sh~~ renamed 0 0

NO CONTENT: file renamed from files/firstboot/22-expandroot.sh to files/firstboot/20-expandroot.sh

files/firstboot/21-regenerate-initramfs.sh ~~files/firstboot/23-regenerate-initramfs.sh~~ renamed 0 0

NO CONTENT: file renamed from files/firstboot/23-regenerate-initramfs.sh to files/firstboot/21-regenerate-initramfs.sh

files/firstboot/30-generate-ssh-keys.sh ~~files/firstboot/21-generate-ssh-keys.sh~~ renamed 0 0

NO CONTENT: file renamed from files/firstboot/21-generate-ssh-keys.sh to files/firstboot/30-generate-ssh-keys.sh

files/firstboot/40-generate-machineid.sh ~~files/firstboot/24-generate-machineid.sh~~ renamed 0 0

NO CONTENT: file renamed from files/firstboot/24-generate-machineid.sh to files/firstboot/40-generate-machineid.sh

files/firstboot/41-create-resolv-symlink.sh ~~files/firstboot/25-create-resolv-symlink.sh~~ renamed 0 0

NO CONTENT: file renamed from files/firstboot/25-create-resolv-symlink.sh to files/firstboot/41-create-resolv-symlink.sh

files/firstboot/42-config-ifnames.sh ~~files/firstboot/26-config-ifnames.sh~~ renamed 0 0

NO CONTENT: file renamed from files/firstboot/26-config-ifnames.sh to files/firstboot/42-config-ifnames.sh

rpi23-gen-image.sh +31 -28

             #!/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 Bootstrap Settings\n#\n"
             set -x
             # Raspberry Pi model configuration
             RPI_MODEL=${RPI_MODEL:=2}
             # Debian release
             RELEASE=${RELEASE:=buster}
             # 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}
             COLLABORA_URL=${COLLABORA_URL:=https://repositories.collabora.co.uk/debian}
             FBTURBO_URL=${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/4.14.80.20181113/bcmrpi3-kernel-bis-4.14.80.20181113.tar.xz}
             # Default precompiled 64bit kernel
             RPI3_64_DEF_KERNEL_URL=${RPI3_64_DEF_KERNEL_URL:=https://github.com/sakaki-/bcmrpi3-kernel/releases/download/4.14.80.20181113/bcmrpi3-kernel-4.14.80.20181113.tar.xz}
+            # Sakaki BIS Kernel RPI4
+            RPI4_64_DEF_KERNEL_URL=https://github.com/sakaki-/bcm2711-kernel-bis/releases/download/4.19.59.20190724/bcm2711-kernel-bis-4.19.59.20190724.tar.xz
             # Generic
             RPI3_64_KERNEL_URL=${RPI3_64_KERNEL_URL:=$RPI3_64_DEF_KERNEL_URL}
+            RPI4_64_KERNEL_URL=${RPI3_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"
             # Firmware directory: Blank if download from github
             RPI_FIRMWARE_DIR=${RPI_FIRMWARE_DIR:=""}
             # General settings
             SET_ARCH=${SET_ARCH:=32}
             HOSTNAME=${HOSTNAME:=rpi${RPI_MODEL}-${RELEASE}}
             PASSWORD=${PASSWORD:=raspberry}
             USER_PASSWORD=${USER_PASSWORD:=raspberry}
             DEFLOCAL=${DEFLOCAL:="en_US.UTF-8"}
             TIMEZONE=${TIMEZONE:="Europe/Berlin"}
             EXPANDROOT=${EXPANDROOT:=true}
+            ENABLE_DPHYSSWAP=${ENABLE_DPHYSSWAP:=true}
             # Keyboard settings
             XKB_MODEL=${XKB_MODEL:=""}
             XKB_LAYOUT=${XKB_LAYOUT:=""}
             XKB_VARIANT=${XKB_VARIANT:=""}
             XKB_OPTIONS=${XKB_OPTIONS:=""}
             # Network settings (DHCP)
             ENABLE_DHCP=${ENABLE_DHCP:=true}
             # Network settings (static)
             NET_ADDRESS=${NET_ADDRESS:=""}
             NET_GATEWAY=${NET_GATEWAY:=""}
             NET_DNS_1=${NET_DNS_1:=""}
             NET_DNS_2=${NET_DNS_2:=""}
             NET_DNS_DOMAINS=${NET_DNS_DOMAINS:=""}
             NET_NTP_1=${NET_NTP_1:=""}
             NET_NTP_2=${NET_NTP_2:=""}
             # APT settings
             APT_PROXY=${APT_PROXY:=""}
             APT_SERVER=${APT_SERVER:="ftp.debian.org"}
             KEEP_APT_PROXY=${KEEP_APT_PROXY:=false}
             # Feature settings
             ENABLE_PRINTK=${ENABLE_PRINTK:=false}
             ENABLE_BLUETOOTH=${ENABLE_BLUETOOTH:=false}
             ENABLE_MINIUART_OVERLAY=${ENABLE_MINIUART_OVERLAY:=false}
             ENABLE_CONSOLE=${ENABLE_CONSOLE:=true}
             ENABLE_I2C=${ENABLE_I2C:=false}
             ENABLE_SPI=${ENABLE_SPI:=false}
             ENABLE_IPV6=${ENABLE_IPV6:=true}
             ENABLE_SSHD=${ENABLE_SSHD:=true}
             ENABLE_NONFREE=${ENABLE_NONFREE:=false}
             ENABLE_WIRELESS=${ENABLE_WIRELESS:=false}
             ENABLE_SOUND=${ENABLE_SOUND:=true}
             ENABLE_DBUS=${ENABLE_DBUS:=true}
             ENABLE_HWRANDOM=${ENABLE_HWRANDOM:=true}
             ENABLE_MINGPU=${ENABLE_MINGPU:=false}
             ENABLE_XORG=${ENABLE_XORG:=false}
             ENABLE_WM=${ENABLE_WM:=""}
             ENABLE_RSYSLOG=${ENABLE_RSYSLOG:=true}
             ENABLE_USER=${ENABLE_USER:=true}
             USER_NAME=${USER_NAME:="pi"}
             ENABLE_ROOT=${ENABLE_ROOT:=false}
             ENABLE_QEMU=${ENABLE_QEMU:=false}
             ENABLE_SYSVINIT=${ENABLE_SYSVINIT:=false}
             ENABLE_KEYGEN=${ENABLE_KEYGEN:=true}
             # SSH settings
             SSH_ENABLE_ROOT=${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:=""}
             # Advanced settings
             ENABLE_SYSTEMDSWAP=${ENABLE_SYSTEMDSWAP:=false}
             ENABLE_MINBASE=${ENABLE_MINBASE:=false}
             ENABLE_REDUCE=${ENABLE_REDUCE:=false}
             ENABLE_UBOOT=${ENABLE_UBOOT:=false}
             UBOOTSRC_DIR=${UBOOTSRC_DIR:=""}
             ENABLE_USBBOOT=${ENABLE_USBBOOT=false}
             ENABLE_FBTURBO=${ENABLE_FBTURBO:=false}
             ENABLE_VIDEOCORE=${ENABLE_VIDEOCORE:=false}
             ENABLE_NEXMON=${ENABLE_NEXMON:=false}
             VIDEOCORESRC_DIR=${VIDEOCORESRC_DIR:=""}
             FBTURBOSRC_DIR=${FBTURBOSRC_DIR:=""}
             NEXMONSRC_DIR=${NEXMONSRC_DIR:=""}
             ENABLE_HARDNET=${ENABLE_HARDNET:=false}
             ENABLE_IPTABLES=${ENABLE_IPTABLES:=false}
             ENABLE_SPLITFS=${ENABLE_SPLITFS:=false}
             ENABLE_INITRAMFS=${ENABLE_INITRAMFS:=false}
             ENABLE_IFNAMES=${ENABLE_IFNAMES:=true}
             ENABLE_SPLASH=${ENABLE_SPLASH:=true}
             ENABLE_LOGO=${ENABLE_LOGO:=true}
             ENABLE_SILENT_BOOT=${ENABLE_SILENT_BOOT=false}
             DISABLE_UNDERVOLT_WARNINGS=${DISABLE_UNDERVOLT_WARNINGS:=}
             # Kernel compilation settings
             BUILD_KERNEL=${BUILD_KERNEL:=true}
             KERNEL_REDUCE=${KERNEL_REDUCE:=false}
             KERNEL_THREADS=${KERNEL_THREADS:=1}
             KERNEL_HEADERS=${KERNEL_HEADERS:=true}
             KERNEL_MENUCONFIG=${KERNEL_MENUCONFIG:=false}
             KERNEL_REMOVESRC=${KERNEL_REMOVESRC:=true}
             KERNEL_OLDDEFCONFIG=${KERNEL_OLDDEFCONFIG:=false}
             KERNEL_CCACHE=${KERNEL_CCACHE:=false}
             KERNEL_ZSWAP=${KERNEL_ZSWAP:=false}
             KERNEL_VIRT=${KERNEL_VIRT:=false}
             KERNEL_BPF=${KERNEL_BPF:=false}
             KERNEL_DEFAULT_GOV=${KERNEL_DEFAULT_GOV:=ondemand}
             KERNEL_SECURITY=${KERNEL_SECURITY:=false}
             KERNEL_NF=${KERNEL_NF:=false}
             # Kernel compilation from source directory settings
             KERNELSRC_DIR=${KERNELSRC_DIR:=""}
             KERNELSRC_CLEAN=${KERNELSRC_CLEAN:=false}
             KERNELSRC_CONFIG=${KERNELSRC_CONFIG:=true}
             KERNELSRC_PREBUILT=${KERNELSRC_PREBUILT:=false}
             # Reduce disk usage settings
             REDUCE_APT=${REDUCE_APT:=true}
             REDUCE_DOC=${REDUCE_DOC:=true}
             REDUCE_MAN=${REDUCE_MAN:=true}
             REDUCE_VIM=${REDUCE_VIM:=false}
             REDUCE_BASH=${REDUCE_BASH:=false}
             REDUCE_HWDB=${REDUCE_HWDB:=true}
             REDUCE_SSHD=${REDUCE_SSHD:=true}
             REDUCE_LOCALE=${REDUCE_LOCALE:=true}
             # Encrypted filesystem settings
             ENABLE_CRYPTFS=${ENABLE_CRYPTFS:=false}
             CRYPTFS_PASSWORD=${CRYPTFS_PASSWORD:=""}
             CRYPTFS_MAPPING=${CRYPTFS_MAPPING:="secure"}
             CRYPTFS_CIPHER=${CRYPTFS_CIPHER:="aes-xts-plain64:sha512"}
             CRYPTFS_XTSKEYSIZE=${CRYPTFS_XTSKEYSIZE:=512}
             #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:=""}
             # Chroot scripts directory
             CHROOT_SCRIPTS=${CHROOT_SCRIPTS:=""}
             # Packages required in the chroot build environment
             APT_INCLUDES=${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:=""}
             # Packages required for bootstrapping
             REQUIRED_PACKAGES="debootstrap debian-archive-keyring qemu-user-static binfmt-support dosfstools rsync bmap-tools whois git bc psmisc dbus sudo"
             #Requierd=netselect-apt
             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 [ "${APT_CACHER_RUNNING}" = "apt-cacher-ng" ] ; then
               APT_PROXY=http://127.0.0.1:3142/
             fi
-            # netselect-apt does not know buster yet
+            # Setup architecture specific settings
-            #if  [ "$RELEASE" = "buster" ] ; then
-            #  RLS=testing
-            #else
-            #  RLS="$RELEASE"
-            #fi
-            #if [ -f "$(pwd)/files/apt/sources.list" ] ; then
-            #rm "$(pwd)/files/apt/sources.list"
-            #fi
-            #if [ "$ENABLE_NONFREE" = true ] ; then
-            #  netselect-apt --arch "$RELEASE_ARCH" -t 3 --sources --nonfree  --outfile "$(pwd)/files/apt/sources.list"  -d "$RLS"
-            #else
-            #  netselect-apt --arch "$RELEASE_ARCH" -t 3 --sources --outfile "$(pwd)/files/apt/sources.list" -d "$RLS"
-            #fi
-            # sed and cut the result string so we can use it as APT_SERVER
-            #APT_SERVER=$(grep -m 1 http files/apt/sources.list | sed "s|http://| |g" | cut -d ' ' -f 3 | sed 's|/$|''|')
-            # make script easier and more stable to use with convenient setup switch. Just setup SET_ARCH and RPI_MODEL and your good to go!
             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=${KERNEL_BIN_IMAGE:="Image"}
                 # Raspberry Pi model specific settings
-                if [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] ; then
+                if [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] || [ "$RPI_MODEL" = 4 ] ; then
-                  REQUIRED_PACKAGES="${REQUIRED_PACKAGES} crossbuild-essential-arm64"
+                  if [ "$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 and 3B+ support 64-bit"
+                  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 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-}
                 fi
                 # Raspberry Pi model specific settings
-                if [ "$RPI_MODEL" = 2 ] || [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] ; then
+                if [ "$RPI_MODEL" = 2 ] || [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] || [ "$RPI_MODEL" = 4 ] ; then
-                  REQUIRED_PACKAGES="${REQUIRED_PACKAGES} crossbuild-essential-armhf"
+                  if [ "$RPI_MODEL" != 4 ] ; then
                     KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcm2709_defconfig}
+                  else
+                    KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcm2711_defconfig}
+                  fi
+                  REQUIRED_PACKAGES="${REQUIRED_PACKAGES} crossbuild-essential-armhf"
                   RELEASE_ARCH=${RELEASE_ARCH:=armhf}
                   KERNEL_IMAGE=${KERNEL_IMAGE:=kernel7.img}
                   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 ] ; then
+            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,firmware-brcm80211"
+                APT_INCLUDES="${APT_INCLUDES},wireless-tools,crda,wireless-regdb"
               fi
             else # Raspberry PI 1,1P,2 without Wifi and bluetooth onboard
               # Check if the internal wireless interface is not supported by the RPi model
               if [ "$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
             set +x
             # Add cmake to compile videocore sources
             if [ "$ENABLE_KEYGEN" = true ] ; then
               REQUIRED_PACKAGES="${REQUIRED_PACKAGES} perl"
             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 bison flex 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"
               # 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="${APT_INCLUDES},device-tree-compiler,bison,flex,bc"
             fi
             if [ "$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 -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="${APT_INCLUDES},apparmor,apparmor-utils,apparmor-profiles,apparmor-profiles-extra,libapparmor-perl"
             fi
             # Add openssh server package
             if [ "$ENABLE_SSHD" = 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 ${CRYPTFS_PASSWORD} > .password
               # Initialize encrypted partition
               echo "YES" | cryptsetup luksFormat "${ROOT_LOOP}" -c "${CRYPTFS_CIPHER}" -s "${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

templates/rpi1buster 0 0

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templates/rpi3-stretch-arm64-4.14.y 0 0

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files/apt/flash-kernel removed 0 -3

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templates/rpi2jessie removed 0 -2

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