Raspi2-3_GenImage Commit - r71:b855bcffebe1 · Collaboration Tremplin des Sciences

comment-cleanup, net-cleanup, size-calc-fix, split-more, menuconfig

Jan Wagner -

r71:b855bcffebe1

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r71:b855bcffebe1

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files/modules/rpi2.conf created 644 +5 0

@@ -0,0 +1,5
	1	# bcm2708_rng
	2	# snd_bcm2835
	3	# i2c-bcm2708
	4	# i2c-dev
	5	# rtc-ds1307

README.md +5 -2

             # rpi2-gen-image
             ## Introduction
             `rpi2-gen-image.sh` is an advanced Debian Linux bootstrapping shell script for generating Debian OS images for the Raspberry 2 (RPi2) computer. The script at this time only supports the bootstrapping of the current stable Debian 8 "jessie" release.
             ## 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 dosfstools rsync bmap-tools whois git-core```
             ## 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 `rpi2-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 `rpi2-gen-image.sh` script.
             #####Command-line examples:
             ```shell
             ENABLE_UBOOT=true ./rpi2-gen-image.sh
             ENABLE_CONSOLE=false ENABLE_IPV6=false ./rpi2-gen-image.sh
             ENABLE_WM=xfce4 ENABLE_FBTURBO=true ENABLE_MINBASE=true ./rpi2-gen-image.sh
             ENABLE_HARDNET=true ENABLE_IPTABLES=true /rpi2-gen-image.sh
             APT_SERVER=ftp.de.debian.org APT_PROXY="http://127.0.0.1:3142/" ./rpi2-gen-image.sh
             ENABLE_MINBASE=true ./rpi2-gen-image.sh
             BUILD_KERNEL=true ENABLE_MINBASE=true ENABLE_IPV6=false ./rpi2-gen-image.sh
             ```
             #### 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.
             ##### `APT_INCLUDES`=""
             A comma seperated list of additional packages to be installed during bootstrapping.
             #### General system settings:
             ##### `HOSTNAME`="rpi2-jessie"
             Set system host name. It's recommended that the host name is unique in the corresponding subnet.
             ##### `PASSWORD`="raspberry"
             Set system `root` password. The same password is used for the created user `pi`. 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. The script variant `minbase` (ENABLE_MINBASE=true) doesn't install `locales`.
             ##### `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.
             #### 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 setting is used to set up networking auto configuration in `/etc/systemd/network/eth.network`.
             #####`ENABLE_DHCP`=true
             Set the system to use DHCP. This requires an DHCP server.
             #### Networking settings (static):
             These settings are used to set up a static networking configuration in /etc/systemd/network/eth.network. The following static networking settings are only supported if `ENABLE_DHCP` was set to `false`.
             #####`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 host names.
             #####`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. In case of problems fe. if the network (auto) configuration failed - the serial console can be used to access the system.
             ##### `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_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 `rpi2-gen-image.sh` script has been tested with the following list of window managers: `blackbox`, `openbox`, `fluxbox`, `jwm`, `dwm`, `xfce4`, `awesome`.
             #### Advanced system features:
             ##### `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_UBOOT`=false
             Replace default RPi2 second stage bootloader (bootcode.bin) with U-Boot bootloader. U-Boot can boot images via the network using the BOOTP/TFTP protocol.
             ##### `ENABLE_FBTURBO`=false
             Install and enable the hardware accelerated Xorg video driver `fbturbo`. Please note that this driver is currently limited to hardware accelerated window moving and scrolling.
             ##### `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 pi user with password raspberry
             ##### `ENABLE_ROOT`=true
             Set root user password so root login will be enabled
             ##### `ENABLE_ROOT_SSH`=true
             Enable password root login via SSH. May be a security risk with default
             password, use only in trusted environments.
             ##### `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 direcory is run in lexicographical order.
             #### Kernel compilation:
             ##### `BUILD_KERNEL`=false
             Build and install the latest RPi2 linux kernel. Currently only the default RPi2 kernel configuration is used. Detailed configuration parameters for customizing the kernel and minor bug fixes still need to get implemented. feel free to help.
             ##### `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 built kernel.
+            ##### `KERNEL_MENUCONFIG`=false
+            Start `make menuconfig` interactive menu-driven kernel configuration. The script will continue after `make menuconfig` was terminated.
             ##### `KERNEL_RMSRC`=true
             Remove all kernel sources from the generated OS image after building.
             ## 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 RPi2 Kernel |
             | `20-networking.sh` | Setup Networking |
             | `21-firewall.sh` | Setup Firewall |
             | `30-security.sh` | Setup Users and Security settings |
             | `31-logging.sh` | Setup Logging |
-            | `41-uboot.sh` | Build and Setup Uboot |
+            | `41-uboot.sh` | Build and Setup U-Boot |
             | `42-fbturbo.sh` | Build and Setup fbturbo Xorg driver |
             | `50-firstboot.sh` | First boot actions |
             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 |
             | --- | --- |
             | `boot` | Boot and RPi2 configuration files |
             | `firstboot` | Scripts that get executed on first boot  |
             | `iptables` | Firewall configuration files |
             | `locales` | Locales configuration |
-            | `modprobe.d` | Kernel Module Blacklist configuration |
+            | `modules` | Kernel Modules configuration |
             | `mount` | Fstab configuration |
             | `network` | Networking configuration files |
             | `sysctl.d` | Swapping and Network Hardening configuration |
             | `xorg` | fbturbo Xorg driver configuration |
             ## Logging of the bootstrapping process
             All information related to the bootstrapping process and the commands executed by the `rpi2-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 ./rpi2-gen-image.sh' ./build.log
             ```
             ## Flashing the image file
             After the image file was successfully created by the `rpi2-gen-image.sh` script it can be copied to the microSD card that will be used by the RPi2 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/jessie/2015-12-13-debian-jessie.img /dev/mmcblk0
             dd bs=4M if=./images/jessie/2015-12-13-debian-jessie.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/jessie/2015-12-13-debian-jessie-frmw.img /dev/mmcblk0
             bmaptool copy ./images/jessie/2015-12-13-debian-jessie-root.img /dev/sdc
             ```

bootstrap.d/10-bootstrap.sh +3 -3

             #
             # Debootstrap basic system
             #
             # Load utility functions
             . ./functions.sh
             # Base debootstrap (unpack only)
             if [ "$ENABLE_MINBASE" = true ] ; then
-              http_proxy=${APT_PROXY} debootstrap --arch=armhf --variant=minbase --foreign --include=${APT_INCLUDES} $RELEASE $R http://${APT_SERVER}/debian
+              http_proxy=${APT_PROXY} debootstrap --arch=${RELEASE_ARCH} --variant=minbase --foreign --include=${APT_INCLUDES} ${RELEASE} $R http://${APT_SERVER}/debian
             else
-              http_proxy=${APT_PROXY} debootstrap --arch=armhf --foreign --include=${APT_INCLUDES} $RELEASE $R http://${APT_SERVER}/debian
+              http_proxy=${APT_PROXY} debootstrap --arch=${RELEASE_ARCH} --foreign --include=${APT_INCLUDES} ${RELEASE} $R http://${APT_SERVER}/debian
             fi
             # Copy qemu emulator binary to chroot
-            cp /usr/bin/qemu-arm-static $R/usr/bin
+            cp ${QEMU_BINARY} $R/usr/bin
             # Copy debian-archive-keyring.pgp
             mkdir -p $R/usr/share/keyrings
             cp /usr/share/keyrings/debian-archive-keyring.gpg $R/usr/share/keyrings/debian-archive-keyring.gpg
             # Complete the bootstrapping process
             chroot_exec /debootstrap/debootstrap --second-stage
             # Mount required filesystems
             mount -t proc none $R/proc
             mount -t sysfs none $R/sys
             mount --bind /dev/pts $R/dev/pts

bootstrap.d/11-apt.sh +3 -3

             #
             # Setup APT repositories
             #
             # Load utility functions
             . ./functions.sh
-            # Use proxy inside chroot
+            # Install and setup APT proxy configuration
             if [ -z "$APT_PROXY" ] ; then
               install_readonly files/apt/10proxy $R/etc/apt/apt.conf.d/10proxy
               sed -i "s/\"\"/\"${APT_PROXY}\"/" $R/etc/apt/apt.conf.d/10proxy
             fi
-            # Pin package flash-kernel to repositories.collabora.co.uk
+            # Install APT pinning configuration for flash-kernel package
             install_readonly files/apt/flash-kernel $R/etc/apt/preferences.d/flash-kernel
             # Upgrade collabora package index and install collabora keyring
             echo "deb https://repositories.collabora.co.uk/debian ${RELEASE} rpi2" >$R/etc/apt/sources.list
             chroot_exec apt-get -qq -y update
             chroot_exec apt-get -qq -y --force-yes install collabora-obs-archive-keyring
-            # Set up initial sources.list
+            # Install APT sources.list
             install_readonly files/apt/sources.list $R/etc/apt/sources.list
             sed -i "s/\/ftp.debian.org\//\/${APT_SERVER}\//" $R/etc/apt/sources.list
             sed -i "s/ jessie/ ${RELEASE}/" $R/etc/apt/sources.list
             # Upgrade package index and update all installed packages and changed dependencies
             chroot_exec apt-get -qq -y update
             chroot_exec apt-get -qq -y -u dist-upgrade

bootstrap.d/12-locale.sh +5 -5

             #
             # Setup Locales and keyboard settings
             #
             # Load utility functions
             . ./functions.sh
-            # Set up timezone
+            # Install and setup timezone
             echo ${TIMEZONE} >$R/etc/timezone
             chroot_exec dpkg-reconfigure -f noninteractive tzdata
-            # Set up default locale and keyboard configuration
+            # Install and setup default locale and keyboard configuration
             if [ "$ENABLE_MINBASE" = false ] ; then
               # Set locale choice in debconf db, even though dpkg-reconfigure ignores and overwrites them due to some bug
               # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=684134 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=685957
               # ... so we have to set locales manually
               if [ "$DEFLOCAL" = "en_US.UTF-8" ] ; then
                 chroot_exec echo "locales locales/locales_to_be_generated multiselect ${DEFLOCAL} UTF-8" | debconf-set-selections
               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
                 sed -i "/en_US.UTF-8/s/^#//" $R/etc/locale.gen
               fi
               sed -i "/${DEFLOCAL}/s/^#//" $R/etc/locale.gen
               chroot_exec echo "locales locales/default_environment_locale select ${DEFLOCAL}" | debconf-set-selections
               chroot_exec locale-gen
               chroot_exec update-locale LANG=${DEFLOCAL}
-              # Keyboard configuration, if requested
+              # Install and setup default keyboard configuration
               if [ "$XKB_MODEL" != "" ] ; then
                 sed -i "s/^XKBMODEL.*/XKBMODEL=\"${XKB_MODEL}\"/" $R/etc/default/keyboard
               fi
               if [ "$XKB_LAYOUT" != "" ] ; then
                 sed -i "s/^XKBLAYOUT.*/XKBLAYOUT=\"${XKB_LAYOUT}\"/" $R/etc/default/keyboard
               fi
               if [ "$XKB_VARIANT" != "" ] ; then
                 sed -i "s/^XKBVARIANT.*/XKBVARIANT=\"${XKB_VARIANT}\"/" $R/etc/default/keyboard
               fi
               if [ "$XKB_OPTIONS" != "" ] ; then
                 sed -i "s/^XKBOPTIONS.*/XKBOPTIONS=\"${XKB_OPTIONS}\"/" $R/etc/default/keyboard
               fi
               chroot_exec dpkg-reconfigure -f noninteractive keyboard-configuration
-              # Set up font console
+              # Install and setup font console
               case "${DEFLOCAL}" in
                 *UTF-8)
                   sed -i 's/^CHARMAP.*/CHARMAP="UTF-8"/' $R/etc/default/console-setup
                   ;;
                 *)
                   sed -i 's/^CHARMAP.*/CHARMAP="guess"/' $R/etc/default/console-setup
                   ;;
               esac
               chroot_exec dpkg-reconfigure -f noninteractive console-setup
             else # ENABLE_MINBASE=true
-              # Set POSIX default locales
+              # Install POSIX default locale
               install_readonly files/locales/locale $R/etc/default/locale
             fi

bootstrap.d/13-kernel.sh +34 -31

             #
             # Build and Setup RPi2 Kernel
             #
             # Load utility functions
             . ./functions.sh
             # Fetch and build latest raspberry kernel
             if [ "$BUILD_KERNEL" = true ] ; then
               # Fetch current raspberrypi kernel sources
               git -C $R/usr/src clone --depth=1 https://github.com/raspberrypi/linux
               # Load default raspberry kernel configuration
-              make -C $R/usr/src/linux ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- bcm2709_defconfig
+              make -C $R/usr/src/linux ARCH=${KERNEL_ARCH} CROSS_COMPILE=${CROSS_COMPILE} bcm2709_defconfig
               # Calculate optimal number of kernel building threads
-              if [ "KERNEL_THREADS" = 1 ] ; then
+              if [ "$KERNEL_THREADS" = 1 ] ; then
                 if [ -f /proc/cpuinfo ] ; then
                   KERNEL_THREADS=$(grep -c processor /proc/cpuinfo)
                 fi
               fi
+              # Start menu-driven kernel configuration (interactive)
+              if [ "$KERNEL_MENUCONFIG" = true ] ; then
+                make -C $R/usr/src/linux ARCH=${KERNEL_ARCH} CROSS_COMPILE=${CROSS_COMPILE} menuconfig
+              fi
               # Cross compile kernel and modules
-              make -C $R/usr/src/linux -j${KERNEL_THREADS} ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- zImage modules dtbs
+              make -C $R/usr/src/linux -j${KERNEL_THREADS} ARCH=${KERNEL_ARCH} CROSS_COMPILE=${CROSS_COMPILE} zImage modules dtbs
               # Install kernel modules
-              make -C $R/usr/src/linux ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- INSTALL_MOD_PATH=../../.. modules_install
+              make -C $R/usr/src/linux ARCH=${KERNEL_ARCH} CROSS_COMPILE=${CROSS_COMPILE} INSTALL_MOD_PATH=../../.. modules_install
               # Install kernel headers
               if [ "$KERNEL_HEADERS" = true ]; then
-                make -C $R/usr/src/linux ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- INSTALL_HDR_PATH=../.. headers_install
+                make -C $R/usr/src/linux ARCH=${KERNEL_ARCH} CROSS_COMPILE=${CROSS_COMPILE} INSTALL_HDR_PATH=../.. headers_install
               fi
               # Copy and rename compiled kernel to boot directory
               mkdir $R/boot/firmware/
-              $R/usr/src/linux/scripts/mkknlimg $R/usr/src/linux/arch/arm/boot/zImage $R/boot/firmware/kernel7.img
+              $R/usr/src/linux/scripts/mkknlimg $R/usr/src/linux/arch/${KERNEL_ARCH}/boot/zImage $R/boot/firmware/kernel7.img
               # Copy dts and dtb device definitions
               mkdir $R/boot/firmware/overlays/
-              cp $R/usr/src/linux/arch/arm/boot/dts/*.dtb $R/boot/firmware/
+              cp $R/usr/src/linux/arch/${KERNEL_ARCH}/boot/dts/*.dtb $R/boot/firmware/
-              cp $R/usr/src/linux/arch/arm/boot/dts/overlays/*.dtb* $R/boot/firmware/overlays/
+              cp $R/usr/src/linux/arch/${KERNEL_ARCH}/boot/dts/overlays/*.dtb* $R/boot/firmware/overlays/
-              cp $R/usr/src/linux/arch/arm/boot/dts/overlays/README $R/boot/firmware/overlays/
+              cp $R/usr/src/linux/arch/${KERNEL_ARCH}/boot/dts/overlays/README $R/boot/firmware/overlays/
               # Remove kernel sources
               if [ "$KERNEL_RMSRC" = true ]; then
                 rm -fr $R/usr/src/linux
               fi
-              # Install raspberry bootloader and flash-kernel
+              # Install raspberry bootloader and flash-kernel packages
               chroot_exec apt-get -qq -y --no-install-recommends install raspberrypi-bootloader-nokernel
             else # BUILD_KERNEL=false
               # Kernel installation
               chroot_exec apt-get -qq -y --no-install-recommends install linux-image-${COLLABORA_KERNEL} raspberrypi-bootloader-nokernel
               # Install flash-kernel last so it doesn't try (and fail) to detect the platform in the chroot
               chroot_exec apt-get -qq -y install flash-kernel
               VMLINUZ="$(ls -1 $R/boot/vmlinuz-* | sort | tail -n 1)"
               [ -z "$VMLINUZ" ] && exit 1
               cp $VMLINUZ $R/boot/firmware/kernel7.img
             fi
             # Setup firmware boot cmdline
             if [ "$ENABLE_SPLITFS" = true ] ; then
               CMDLINE="dwc_otg.lpm_enable=0 root=/dev/sda1 rootfstype=ext4 rootflags=commit=100,data=writeback elevator=deadline rootwait net.ifnames=1 console=tty1 ${CMDLINE}"
             else
               CMDLINE="dwc_otg.lpm_enable=0 root=/dev/mmcblk0p2 rootfstype=ext4 rootflags=commit=100,data=writeback elevator=deadline rootwait net.ifnames=1 console=tty1 ${CMDLINE}"
             fi
-            # Set up serial console support (if requested)
+            # Add serial console support
             if [ "$ENABLE_CONSOLE" = true ] ; then
               CMDLINE="${CMDLINE} console=ttyAMA0,115200 kgdboc=ttyAMA0,115200"
             fi
-            # Set up IPv6 networking support
+            # Remove IPv6 networking support
             if [ "$ENABLE_IPV6" = false ] ; then
               CMDLINE="${CMDLINE} ipv6.disable=1"
             fi
+            # Install firmware boot cmdline
             echo "${CMDLINE}" >$R/boot/firmware/cmdline.txt
-            # Set up firmware config
+            # Install firmware config
             install_readonly files/boot/config.txt $R/boot/firmware/config.txt
-            # Load snd_bcm2835 kernel module at boot time
+            # Setup minimal GPU memory allocation size: 16MB (no X)
-            if [ "$ENABLE_SOUND" = true ] ; then
-              echo "snd_bcm2835" >>$R/etc/modules
-            fi
-            # Set smallest possible GPU memory allocation size: 16MB (no X)
             if [ "$ENABLE_MINGPU" = true ] ; then
               echo "gpu_mem=16" >>$R/boot/firmware/config.txt
             fi
-            # Create symlinks
+            # Create firmware configuration and cmdline symlinks
             ln -sf firmware/config.txt $R/boot/config.txt
             ln -sf firmware/cmdline.txt $R/boot/cmdline.txt
-            # Prepare modules-load.d directory
+            # Install and setup kernel modules to load at boot
             mkdir -p $R/lib/modules-load.d/
+            install_readonly files/modules/rpi2.conf $R/lib/modules-load.d/rpi2.conf
-            # Load random module on boot
+            # Load hardware random module at boot
             if [ "$ENABLE_HWRANDOM" = true ] ; then
-              cat <<EOM >$R/lib/modules-load.d/rpi2.conf
+              sed -i "s/^# bcm2708_rng/bcm2708_rng/" $R/lib/modules-load.d/rpi2.conf
-            bcm2708_rng
-            EOM
             fi
-            # Prepare modprobe.d directory
+            # Load sound module at boot
-            mkdir -p $R/etc/modprobe.d/
+            if [ "$ENABLE_SOUND" = true ] ; then
+              sed -i "s/^# snd_bcm2835/snd_bcm2835/" $R/lib/modules-load.d/rpi2.conf
+            fi
-            # Blacklist sound modules
+            # Install kernel modules blacklist
-            install_readonly files/modprobe.d/raspi-blacklist.conf $R/etc/modprobe.d/raspi-blacklist.conf
+            mkdir -p $R/etc/modprobe.d/
+            install_readonly files/modules/raspi-blacklist.conf $R/etc/modprobe.d/raspi-blacklist.conf
-            # Create default fstab
+            # Install and setup fstab
             install_readonly files/mount/fstab $R/etc/fstab
             if [ "$ENABLE_SPLITFS" = true ] ; then
               sed -i 's/mmcblk0p2/sda1/' $R/etc/fstab
             fi
-            # Avoid swapping and increase cache sizes
+            # Install sysctl.d configuration files
             install_readonly files/sysctl.d/81-rpi-vm.conf $R/etc/sysctl.d/81-rpi-vm.conf

bootstrap.d/20-networking.sh +33 -29

             #
             # Setup Networking
             #
             # Load utility functions
             . ./functions.sh
-            # Set up IPv4 hosts
+            # Install and setup hostname
             install_readonly files/network/hostname $R/etc/hostname
             sed -i "s/^rpi2-jessie/${HOSTNAME}/" $R/etc/hostname
+            # Install and setup hosts
             install_readonly files/network/hosts $R/etc/hosts
             sed -i "s/rpi2-jessie/${HOSTNAME}/" $R/etc/hosts
+            # Setup hostname entry with static IP
             if [ "$NET_ADDRESS" != "" ] ; then
               NET_IP=$(echo ${NET_ADDRESS} | cut -f 1 -d'/')
               sed -i "s/^127.0.1.1/${NET_IP}/" $R/etc/hosts
             fi
-            # Set up IPv6 hosts
+            # Remove IPv6 hosts
-            if [ "$ENABLE_IPV6" = true ] ; then
+            if [ "$ENABLE_IPV6" = false ] ; then
-              cat <<EOM >>$R/etc/hosts
+              sed -i -e "/::[1-9]/d" -e "/^$/d" $R/etc/hosts
-            ::1             localhost ip6-localhost ip6-loopback
-            ff02::1         ip6-allnodes
-            ff02::2         ip6-allrouters
-            EOM
             fi
-            # Place hint about network configuration
+            # Install hint about network configuration
             install_readonly files/network/interfaces $R/etc/network/interfaces
-            if [ "$ENABLE_DHCP" = true ] ; then
+            # Install configuration for interface eth0
-              # Enable systemd-networkd DHCP configuration for interface eth0
             install_readonly files/network/eth.network $R/etc/systemd/network/eth.network
+            if [ "$ENABLE_DHCP" = true ] ; then
+              # Enable DHCP configuration for interface eth0
+              sed -i -e "s/DHCP=.*/DHCP=yes/" -e "/DHCP/q" $R/etc/systemd/network/eth.network
               # Set DHCP configuration to IPv4 only
               if [ "$ENABLE_IPV6" = false ] ; then
-                sed -i "s/^DHCP=yes/DHCP=v4/" $R/etc/systemd/network/eth.network
+                sed -i "s/DHCP=.*/DHCP=v4/" $R/etc/systemd/network/eth.network
               fi
             else # ENABLE_DHCP=false
-              cat <<EOM >$R/etc/systemd/network/eth.network
+              # Set static network configuration for interface eth0
-            [Match]
+              sed -i\
-            Name=eth0
+              -e "s|DHCP=.*|DHCP=no|"\
+              -e "s|Address=\$|Address=${NET_ADDRESS}|"\
-            [Network]
+              -e "s|Gateway=\$|Gateway=${NET_GATEWAY}|"\
-            DHCP=no
+              -e "0,/DNS=\$/ s|DNS=\$|DNS=${NET_DNS_1}|"\
-            Address=${NET_ADDRESS}
+              -e "0,/DNS=\$/ s|DNS=\$|DNS=${NET_DNS_2}|"\
-            Gateway=${NET_GATEWAY}
+              -e "s|Domains=\$|Domains=${NET_DNS_DOMAINS}|"\
-            DNS=${NET_DNS_1}
+              -e "0,/NTP=\$/ s|NTP=\$|NTP=${NET_NTP_1}|"\
-            DNS=${NET_DNS_2}
+              -e "0,/NTP=\$/ s|NTP=\$|NTP=${NET_NTP_2}|"\
-            Domains=${NET_DNS_DOMAINS}
+              $R/etc/systemd/network/eth.network
-            NTP=${NET_NTP_1}
-            NTP=${NET_NTP_2}
-            EOM
             fi
+            # Remove empty settings from network configuration
+            sed -i "/.*=\$/d" $R/etc/systemd/network/eth.network
             # Enable systemd-networkd service
             chroot_exec systemctl enable systemd-networkd
+            # Install host.conf resolver configuration
+            install_readonly files/network/host.conf $R/etc/host.conf
             # Enable network stack hardening
             if [ "$ENABLE_HARDNET" = true ] ; then
+              # Install sysctl.d configuration files
               install_readonly files/sysctl.d/82-rpi-net-hardening.conf $R/etc/sysctl.d/82-rpi-net-hardening.conf
-              # Enable resolver warnings about spoofed addresses
+              # Setup resolver warnings about spoofed addresses
-              install_readonly files/network/host.conf $R/etc/host.conf
+              sed -i "s/^# spoof warn/spoof warn/" $R/etc/host.conf
             fi

bootstrap.d/21-firewall.sh +5 -5

             #
             # Setup Firewall
             #
             # Load utility functions
             . ./functions.sh
             if [ "$ENABLE_IPTABLES" = true ] ; then
               # Create iptables configuration directory
               mkdir -p "$R/etc/iptables"
-              # Create iptables systemd service
+              # Install iptables systemd service
               install_readonly files/iptables/iptables.service $R/etc/systemd/system/iptables.service
-              # Create flush-table script called by iptables service
+              # Install flush-table script called by iptables service
               install_exec files/iptables/flush-iptables.sh $R/etc/iptables/flush-iptables.sh
-              # Create iptables rule file
+              # Install iptables rule file
               install_readonly files/iptables/iptables.rules $R/etc/iptables/iptables.rules
               # Reload systemd configuration and enable iptables service
               chroot_exec systemctl daemon-reload
               chroot_exec systemctl enable iptables.service
               if [ "$ENABLE_IPV6" = true ] ; then
-                # Create ip6tables systemd service
+                # Install ip6tables systemd service
                 install_readonly files/iptables/ip6tables.service $R/etc/systemd/system/ip6tables.service
-                # Create ip6tables file
+                # Install ip6tables file
                 install_exec files/iptables/flush-ip6tables.sh $R/etc/iptables/flush-ip6tables.sh
                 install_readonly files/iptables/ip6tables.rules $R/etc/iptables/ip6tables.rules
                 # Reload systemd configuration and enable iptables service
                 chroot_exec systemctl daemon-reload
                 chroot_exec systemctl enable ip6tables.service
               fi
             fi
             if [ "$ENABLE_SSHD" = false ] ; then
              # Remove SSHD related iptables rules
              sed -i "/^#/! {/SSH/ s/^/# /}" $R/etc/iptables/iptables.rules 2> /dev/null
              sed -i "/^#/! {/SSH/ s/^/# /}" $R/etc/iptables/ip6tables.rules 2> /dev/null
             fi

bootstrap.d/30-security.sh 0 0

NO CONTENT: modified file

bootstrap.d/41-uboot.sh +4 -4

             #
-            # Build and Setup Uboot
+            # Build and Setup U-Boot
             #
             # Load utility functions
             . ./functions.sh
             # Install gcc/c++ build environment inside the chroot
             if [ "$ENABLE_UBOOT" = true ] || [ "$ENABLE_FBTURBO" = true ]; then
               chroot_exec apt-get install -q -y --force-yes --no-install-recommends linux-compiler-gcc-4.9-arm g++ make bc
             fi
             # Fetch and build U-Boot bootloader
             if [ "$ENABLE_UBOOT" = true ] ; then
               # Fetch U-Boot bootloader sources
               git -C $R/tmp clone git://git.denx.de/u-boot.git
               # Build and install U-Boot inside chroot
               chroot_exec make -C /tmp/u-boot/ rpi_2_defconfig all
               # Copy compiled bootloader binary and set config.txt to load it
               cp $R/tmp/u-boot/u-boot.bin $R/boot/firmware/
               printf "\n# boot u-boot kernel\nkernel=u-boot.bin\n" >> $R/boot/firmware/config.txt
-              # Set U-Boot command file
+              # Install and setup U-Boot command file
               install_readonly files/boot/uboot.mkimage $R/boot/firmware/uboot.mkimage
               printf "# Set the kernel boot command line\nsetenv bootargs \"earlyprintk ${CMDLINE}\"\n\n$(cat $R/boot/firmware/uboot.mkimage)" > $R/boot/firmware/uboot.mkimage
-              # Generate U-Boot image from command file
+              # Generate U-Boot bootloader image
-              chroot_exec /tmp/u-boot/tools/mkimage -A arm -O linux -T script -C none -a 0x00000000 -e 0x00000000 -n RPi2 -d /boot/firmware/uboot.mkimage /boot/firmware/boot.scr
+              chroot_exec /tmp/u-boot/tools/mkimage -A ${KERNEL_ARCH} -O linux -T script -C none -a 0x00000000 -e 0x00000000 -n RPi2 -d /boot/firmware/uboot.mkimage /boot/firmware/boot.scr
             fi

bootstrap.d/42-fbturbo.sh +1 -1

             #
             # Build and Setup fbturbo Xorg driver
             #
             # Load utility functions
             . ./functions.sh
             if [ "$ENABLE_FBTURBO" = true ] ; then
               # Fetch fbturbo driver sources
               git -C $R/tmp clone https://github.com/ssvb/xf86-video-fbturbo.git
               # Install Xorg build dependencies
               chroot_exec apt-get install -q -y --no-install-recommends xorg-dev xutils-dev x11proto-dri2-dev libltdl-dev libtool automake libdrm-dev
               # Build and install fbturbo driver inside chroot
               chroot_exec /bin/bash -x <<'EOF'
             cd /tmp/xf86-video-fbturbo
             autoreconf -vi
             ./configure --prefix=/usr
             make
             make install
             EOF
-              # Add fbturbo driver to Xorg configuration
+              # Install fbturbo driver Xorg configuration
               install_readonly files/xorg/99-fbturbo.conf $R/usr/share/X11/xorg.conf.d/99-fbturbo.conf
               # Remove Xorg build dependencies
               chroot_exec apt-get -q -y purge --auto-remove xorg-dev xutils-dev x11proto-dri2-dev libltdl-dev libtool automake libdrm-dev
             fi
             # Remove gcc/c++ build environment from the chroot
             if [ "$ENABLE_UBOOT" = true ] || [ "$ENABLE_FBTURBO" = true ]; then
               chroot_exec apt-get -y -q purge --auto-remove bc binutils cpp cpp-4.9 g++ g++-4.9 gcc gcc-4.9 libasan1 libatomic1 libc-dev-bin libc6-dev libcloog-isl4 libgcc-4.9-dev libgomp1 libisl10 libmpc3 libmpfr4 libstdc++-4.9-dev libubsan0 linux-compiler-gcc-4.9-arm linux-libc-dev make
             fi

files/modules/raspi-blacklist.conf ~~files/modprobe.d/raspi-blacklist.conf~~ renamed 0 0

NO CONTENT: file renamed from files/modprobe.d/raspi-blacklist.conf to files/modules/raspi-blacklist.conf

files/network/eth.network +8 -1

@@ -1,5 +1,12
1	[Match]	1	[Match]
2	Name=eth0	2	Name=eth0
3		3
4	[Network]	4	[Network]
5	DHCP=~~yes~~	5	DHCP=no
		6	Address=
		7	Gateway=
		8	DNS=
		9	DNS=
		10	Domains=
		11	NTP=
		12	NTP=

files/network/host.conf +2 -1

@@ -1,1 +1,2
1	spoof warn	1	# spoof warn
		2	multi on

files/network/hosts +4 0

@@ -1,2 +1,6
1	127.0.0.1 localhost	1	127.0.0.1 localhost
2	127.0.1.1 rpi2-jessie	2	127.0.1.1 rpi2-jessie
		3
		4	::1 localhost ip6-localhost ip6-loopback
		5	ff02::1 ip6-allnodes
		6	ff02::2 ip6-allrouters

rpi2-gen-image.sh +11 -3

             #!/bin/sh
             ########################################################################
             # rpi2-gen-image.sh					   ver2a 12/2015
             #
             # Advanced debian "jessie" bootstrap script for RPi2
             #
             # 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.
             #
             # some parts based on rpi2-build-image:
             # Copyright (C) 2015 Ryan Finnie <ryan@finnie.org>
             # Copyright (C) 2015 Luca Falavigna <dktrkranz@debian.org>
             ########################################################################
             # Load utility functions
             . ./functions.sh
             # Introduce settings
             set -e
             echo -n -e "\n#\n# RPi2 Bootstrap Settings\n#\n"
             set -x
             # Debian release
             RELEASE=${RELEASE:=jessie}
+            KERNEL_ARCH=${KERNEL_ARCH:=arm}
+            RELEASE_ARCH=${RELEASE_ARCH:=armhf}
+            CROSS_COMPILE=${CROSS_COMPILE:=arm-linux-gnueabihf-}
             COLLABORA_KERNEL=${COLLABORA_KERNEL:=3.18.0-trunk-rpi2}
+            QEMU_BINARY=${QEMU_BINARY:=/usr/bin/qemu-arm-static}
             # Build settings
             BASEDIR=$(pwd)/images/${RELEASE}
             BUILDDIR=${BASEDIR}/build
             # General settings
             HOSTNAME=${HOSTNAME:=rpi2-${RELEASE}}
             PASSWORD=${PASSWORD:=raspberry}
             DEFLOCAL=${DEFLOCAL:="en_US.UTF-8"}
             TIMEZONE=${TIMEZONE:="Europe/Berlin"}
             EXPANDROOT=${EXPANDROOT:=true}
             # Keyboard settings
             XKB_MODEL=${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)
             # only used on ENABLE_DHCP=false
             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=${APT_SERVER:="ftp.debian.org"}
             # Feature settings
             ENABLE_CONSOLE=${ENABLE_CONSOLE:=true}
             ENABLE_IPV6=${ENABLE_IPV6:=true}
             ENABLE_SSHD=${ENABLE_SSHD:=true}
             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}
             ENABLE_ROOT=${ENABLE_ROOT:=false}
             ENABLE_ROOT_SSH=${ENABLE_ROOT_SSH:=false}
             # Advanced settings
             ENABLE_MINBASE=${ENABLE_MINBASE:=false}
             ENABLE_UBOOT=${ENABLE_UBOOT:=false}
             ENABLE_FBTURBO=${ENABLE_FBTURBO:=false}
             ENABLE_HARDNET=${ENABLE_HARDNET:=false}
             ENABLE_IPTABLES=${ENABLE_IPTABLES:=false}
             ENABLE_SPLITFS=${ENABLE_SPLITFS:=false}
             # Kernel compilation settings
             BUILD_KERNEL=${BUILD_KERNEL:=false}
             KERNEL_THREADS=${KERNEL_THREADS:=1}
             KERNEL_HEADERS=${KERNEL_HEADERS:=true}
+            KERNEL_MENUCONFIG=${KERNEL_MENUCONFIG:=false}
             KERNEL_RMSRC=${KERNEL_RMSRC:=true}
             # Image chroot path
             R=${BUILDDIR}/chroot
             CHROOT_SCRIPTS=${CHROOT_SCRIPTS:=""}
             # Packages required for bootstrapping
             REQUIRED_PACKAGES="debootstrap debian-archive-keyring qemu-user-static binfmt-support dosfstools rsync bmap-tools whois git-core"
             # Missing packages that need to be installed
             MISSING_PACKAGES=""
             # Packages required in the chroot build environment
             APT_INCLUDES=${APT_INCLUDES:=""}
             APT_INCLUDES="${APT_INCLUDES},apt-transport-https,ca-certificates,debian-archive-keyring,dialog,sudo"
             set +x
             # Are we running as root?
             if [ "$(id -u)" -ne "0" ] ; then
               echo "this script must be executed with root privileges"
               exit 1
             fi
             # Add packages required for kernel cross compilation
             if [ "$BUILD_KERNEL" = true ] ; then
               REQUIRED_PACKAGES="${REQUIRED_PACKAGES} crossbuild-essential-armhf"
+              if [ "$KERNEL_MENUCONFIG" = true ] ; then
+                REQUIRED_PACKAGES="${REQUIRED_PACKAGES} ncurses-dev"
+              fi
             fi
             # Check if all required packages are installed
             for package in $REQUIRED_PACKAGES ; do
               if [ "`dpkg-query -W -f='${Status}' $package`" != "install ok installed" ] ; then
                 MISSING_PACKAGES="$MISSING_PACKAGES $package"
               fi
             done
             # Ask if missing packages should get installed right now
             if [ -n "$MISSING_PACKAGES" ] ; then
               echo "the following packages needed by this script are not installed:"
               echo "$MISSING_PACKAGES"
               echo -n "\ndo you want to install the missing packages right now? [y/n] "
               read confirm
               if [ "$confirm" != "y" ] ; then
                 exit 1
               fi
             fi
             # Make sure all required packages are installed
             apt-get -qq -y install ${REQUIRED_PACKAGES}
             # Don't clobber an old build
             if [ -e "$BUILDDIR" ]; then
               echo "directory $BUILDDIR already exists, not proceeding"
               exit 1
             fi
             set -x
             # Call "cleanup" function on various signals and errors
             trap cleanup 0 1 2 3 6
             # Setup chroot directory
             mkdir -p $R
             # Add required packages for the minbase installation
             if [ "$ENABLE_MINBASE" = true ] ; then
               APT_INCLUDES="${APT_INCLUDES},vim-tiny,netbase,net-tools"
             else
               APT_INCLUDES="${APT_INCLUDES},locales,keyboard-configuration,console-setup"
             fi
             # Add parted package, required to get partprobe utility
             if [ "$EXPANDROOT" = true ] ; then
               APT_INCLUDES="${APT_INCLUDES},parted"
             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"
             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
             if [ "$ENABLE_USER" = true ]; then
               APT_INCLUDES="${APT_INCLUDES},sudo"
             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"
             fi
             ## Main bootstrap
             for i in bootstrap.d/*.sh; do
               head -n 3 $i
               . $i
             done
             ## Custom bootstrap scripts
             if [ -d "custom.d" ]; then
               for i in custom.d/*.sh; do
                 . $i
               done
             fi
             # Invoke custom scripts
             if [ -n "${CHROOT_SCRIPTS}" ]; then
               cp -r "${CHROOT_SCRIPTS}" "${R}/chroot_scripts"
               LANG=C chroot $R bash -c 'for SCRIPT in /chroot_scripts/*; do if [ -f $SCRIPT -a -x $SCRIPT ]; then $SCRIPT; fi done;'
               rm -rf "${R}/chroot_scripts"
             fi
             ## 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 files
             rm -f $R/etc/apt/sources.list.save
             rm -f $R/etc/resolvconf/resolv.conf.d/original
             rm -rf $R/run
             mkdir -p $R/run
             rm -f $R/etc/*-
             rm -f $R/root/.bash_history
             rm -rf $R/tmp/*
             rm -f $R/var/lib/urandom/random-seed
             [ -L $R/var/lib/dbus/machine-id ] || rm -f $R/var/lib/dbus/machine-id
             rm -f $R/etc/machine-id
             rm -fr $R/etc/apt/apt.conf.d/10proxy
             rm -f $R/etc/resolv.conf
             # Calculate size of the chroot directory in KB
             CHROOT_SIZE=$(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} + ${FRMW_SECTORS})
             # The root partition is EXT4
             # This means more space than the actual used space of the chroot is used.
             # As overhead for journaling and reserved blocks 20% are added.
             ROOT_SECTORS=$(expr $(expr ${CHROOT_SIZE} + ${CHROOT_SIZE} \/ 100 \* 20) \* 1024 \/ 512)
             # Calculate required image size in 512 Byte sectors
             IMAGE_SECTORS=$(expr ${TABLE_SECTORS} + ${FRMW_SECTORS} + ${ROOT_SECTORS})
             # Prepare date string for image file name
             DATE="$(date +%Y-%m-%d)"
             # Prepare image file
             if [ "$ENABLE_SPLITFS" = true ] ; then
               dd if=/dev/zero of="$BASEDIR/${DATE}-debian-${RELEASE}-frmw.img" bs=512 count=${TABLE_SECTORS}
               dd if=/dev/zero of="$BASEDIR/${DATE}-debian-${RELEASE}-frmw.img" bs=512 count=0 seek=${FRMW_SECTORS}
               dd if=/dev/zero of="$BASEDIR/${DATE}-debian-${RELEASE}-root.img" bs=512 count=${TABLE_SECTORS}
               dd if=/dev/zero of="$BASEDIR/${DATE}-debian-${RELEASE}-root.img" bs=512 count=0 seek=${ROOT_SECTORS}
               # Write partition tables
               sfdisk -q -L -f "$BASEDIR/${DATE}-debian-${RELEASE}-frmw.img" <<EOM
             unit: sectors
 : start=   ${TABLE_SECTORS}, size=   ${FRMW_SECTORS}, Id= c, bootable
 : start=                  0, size=                 0, Id= 0
 : start=                  0, size=                 0, Id= 0
 : start=                  0, size=                 0, Id= 0
             EOM
               sfdisk -q -L -f "$BASEDIR/${DATE}-debian-${RELEASE}-root.img" <<EOM
             unit: sectors
 : start=   ${TABLE_SECTORS}, size=   ${ROOT_SECTORS}, Id=83
 : start=                  0, size=                 0, Id= 0
 : start=                  0, size=                 0, Id= 0
 : start=                  0, size=                 0, Id= 0
             EOM
               # Setup temporary loop devices
               FRMW_LOOP="$(losetup -o 1M --sizelimit 64M -f --show $BASEDIR/${DATE}-debian-${RELEASE}-frmw.img)"
               ROOT_LOOP="$(losetup -o 1M -f --show $BASEDIR/${DATE}-debian-${RELEASE}-root.img)"
             else
               dd if=/dev/zero of="$BASEDIR/${DATE}-debian-${RELEASE}.img" bs=512 count=${TABLE_SECTORS}
               dd if=/dev/zero of="$BASEDIR/${DATE}-debian-${RELEASE}.img" bs=512 count=0 seek=${IMAGE_SECTORS}
               # Write partition table
               sfdisk -q -f "$BASEDIR/${DATE}-debian-${RELEASE}.img" <<EOM
             unit: sectors
 : start=   ${TABLE_SECTORS}, size=   ${FRMW_SECTORS}, Id= c, bootable
 : start=     ${ROOT_OFFSET}, size=   ${ROOT_SECTORS}, Id=83
 : start=                  0, size=                 0, Id= 0
 : start=                  0, size=                 0, Id= 0
             EOM
               # Setup temporary loop devices
               FRMW_LOOP="$(losetup -o 1M --sizelimit 64M -f --show $BASEDIR/${DATE}-debian-${RELEASE}.img)"
               ROOT_LOOP="$(losetup -o 65M -f --show $BASEDIR/${DATE}-debian-${RELEASE}.img)"
             fi
             # Build filesystems
             mkfs.vfat "$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 "$BASEDIR/${DATE}-debian-${RELEASE}-frmw.bmap" "$BASEDIR/${DATE}-debian-${RELEASE}-frmw.img"
               bmaptool create -o "$BASEDIR/${DATE}-debian-${RELEASE}-root.bmap" "$BASEDIR/${DATE}-debian-${RELEASE}-root.img"
               # Image was successfully created
-              echo "$BASEDIR/${DATE}-debian-${RELEASE}-frmw.img ($(expr ${TABLE_SECTORS} + ${FRMW_SECTORS} \* 512 \/ 1024 \/ 1024)M)" ": successfully created"
+              echo "$BASEDIR/${DATE}-debian-${RELEASE}-frmw.img ($(expr \( ${TABLE_SECTORS} + ${FRMW_SECTORS} \) \* 512 \/ 1024 \/ 1024)M)" ": successfully created"
-              echo "$BASEDIR/${DATE}-debian-${RELEASE}-root.img ($(expr ${TABLE_SECTORS} + ${ROOT_SECTORS} \* 512 \/ 1024 \/ 1024)M)" ": successfully created"
+              echo "$BASEDIR/${DATE}-debian-${RELEASE}-root.img ($(expr \( ${TABLE_SECTORS} + ${ROOT_SECTORS} \) \* 512 \/ 1024 \/ 1024)M)" ": successfully created"
             else
               # Create block map file for "bmaptool"
               bmaptool create -o "$BASEDIR/${DATE}-debian-${RELEASE}.bmap" "$BASEDIR/${DATE}-debian-${RELEASE}.img"
               # Image was successfully created
-              echo "$BASEDIR/${DATE}-debian-${RELEASE}.img ($(expr ${TABLE_SECTORS} + ${FRMW_SECTORS} + ${ROOT_SECTORS} \* 512 \/ 1024 \/ 1024)M)" ": successfully created"
+              echo "$BASEDIR/${DATE}-debian-${RELEASE}.img ($(expr \( ${TABLE_SECTORS} + ${FRMW_SECTORS} + ${ROOT_SECTORS} \) \* 512 \/ 1024 \/ 1024)M)" ": successfully created"
             fi

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