diff options
Diffstat (limited to 'bootstrap.d/13-kernel.sh')
| -rw-r--r-- | bootstrap.d/13-kernel.sh | 67 |
1 files changed, 35 insertions, 32 deletions
diff --git a/bootstrap.d/13-kernel.sh b/bootstrap.d/13-kernel.sh index 9fcb86f..8ec8856 100644 --- a/bootstrap.d/13-kernel.sh +++ b/bootstrap.d/13-kernel.sh @@ -11,42 +11,47 @@ if [ "$BUILD_KERNEL" = true ] ; then 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/arm/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/*.dtb $R/boot/firmware/ + cp $R/usr/src/linux/arch/${KERNEL_ARCH}/boot/dts/overlays/*.dtb* $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 @@ -60,63 +65,61 @@ else # BUILD_KERNEL=false cp $VMLINUZ $R/boot/firmware/kernel7.img fi -# Set up firmware boot cmdline +# Setup firmware boot cmdline if [ "$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 $R/boot/firmware/config.txt -# Load snd_bcm2835 kernel module at boot time -if [ "$ENABLE_SOUND" = true ] ; then - echo "snd_bcm2835" >>$R/etc/modules -fi - -# Set smallest possible GPU memory allocation size: 16MB (no X) +# Setup minimal GPU memory allocation size: 16MB (no X) if [ "$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 -bcm2708_rng -EOM + sed -i "s/^# bcm2708_rng/bcm2708_rng/" $R/lib/modules-load.d/rpi2.conf fi -# Prepare modprobe.d directory -mkdir -p $R/etc/modprobe.d/ +# Load sound module at boot +if [ "$ENABLE_SOUND" = true ] ; then + sed -i "s/^# snd_bcm2835/snd_bcm2835/" $R/lib/modules-load.d/rpi2.conf +fi -# Blacklist sound modules -install_readonly files/modprobe.d/raspi-blacklist.conf $R/etc/modprobe.d/raspi-blacklist.conf +# Install kernel modules blacklist +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 |