13-kernel.sh
97 lines
| 3.2 KiB
| application/x-sh
|
BashLexer
/ bootstrap.d / 13-kernel.sh
Filip Pytloun
|
r56 | # | ||
| # Kernel installation | ||||
| # | ||||
| . ./functions.sh | ||||
| # Fetch and build latest raspberry kernel | ||||
| if [ "$BUILD_KERNEL" = true ] ; then | ||||
| # Fetch current raspberrypi kernel sources | ||||
| git -C $R/tmp clone --depth=1 https://github.com/raspberrypi/linux | ||||
| # Load default raspberry kernel configuration | ||||
| make -C $R/tmp/linux ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- bcm2709_defconfig | ||||
| # Cross compile kernel and modules | ||||
| make -C $R/tmp/linux -j 8 ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- zImage modules dtbs | ||||
| # Install kernel modules | ||||
| make -C $R/tmp/linux ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- INSTALL_MOD_PATH=../.. modules_install | ||||
| # Copy and rename compiled kernel to boot directory | ||||
| mkdir $R/boot/firmware/ | ||||
| $R/tmp/linux/scripts/mkknlimg $R/tmp/linux/arch/arm/boot/zImage $R/boot/firmware/kernel7.img | ||||
| # Copy dts and dtb device definitions | ||||
| mkdir $R/boot/firmware/overlays/ | ||||
| cp $R/tmp/linux/arch/arm/boot/dts/*.dtb $R/boot/firmware/ | ||||
| cp $R/tmp/linux/arch/arm/boot/dts/overlays/*.dtb* $R/boot/firmware/overlays/ | ||||
| cp $R/tmp/linux/arch/arm/boot/dts/overlays/README $R/boot/firmware/overlays/ | ||||
| # Install raspberry bootloader and flash-kernel | ||||
| chroot_exec apt-get -qq -y --no-install-recommends install raspberrypi-bootloader-nokernel | ||||
| else | ||||
| # Kernel installation | ||||
| chroot_exec apt-get -qq -y --no-install-recommends install linux-image-${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 $R/boot/firmware/kernel7.img | ||||
| fi | ||||
| # Set up firmware boot cmdline | ||||
| CMDLINE="dwc_otg.lpm_enable=0 root=/dev/mmcblk0p2 rootfstype=ext4 rootflags=commit=100,data=writeback elevator=deadline rootwait net.ifnames=1 console=tty1" | ||||
| # Set up serial console support (if requested) | ||||
| if [ "$ENABLE_CONSOLE" = true ] ; then | ||||
| CMDLINE="${CMDLINE} console=ttyAMA0,115200 kgdboc=ttyAMA0,115200" | ||||
| fi | ||||
| # Set up IPv6 networking support | ||||
| if [ "$ENABLE_IPV6" = false ] ; then | ||||
| CMDLINE="${CMDLINE} ipv6.disable=1" | ||||
| fi | ||||
| echo "${CMDLINE}" >$R/boot/firmware/cmdline.txt | ||||
| # Set up firmware config | ||||
| install -o root -g root -m 644 files/config.txt $R/boot/firmware/config.txt | ||||
| # Load snd_bcm2835 kernel module at boot time | ||||
| if [ "$ENABLE_SOUND" = true ] ; then | ||||
| echo "snd_bcm2835" >>$R/etc/modules | ||||
| fi | ||||
| # Set smallest possible GPU memory allocation size: 16MB (no X) | ||||
| if [ "$ENABLE_MINGPU" = true ] ; then | ||||
| echo "gpu_mem=16" >>$R/boot/firmware/config.txt | ||||
| fi | ||||
| # Create symlinks | ||||
| ln -sf firmware/config.txt $R/boot/config.txt | ||||
| ln -sf firmware/cmdline.txt $R/boot/cmdline.txt | ||||
| # Prepare modules-load.d directory | ||||
| mkdir -p $R/lib/modules-load.d/ | ||||
| # Load random module on boot | ||||
| if [ "$ENABLE_HWRANDOM" = true ] ; then | ||||
| cat <<EOM >$R/lib/modules-load.d/rpi2.conf | ||||
| bcm2708_rng | ||||
| EOM | ||||
| fi | ||||
| # Prepare modprobe.d directory | ||||
| mkdir -p $R/etc/modprobe.d/ | ||||
| # Blacklist sound modules | ||||
| install -o root -g root -m 644 files/modprobe.d/raspi-blacklist.conf $R/etc/modprobe.d/raspi-blacklist.conf | ||||
| # Create default fstab | ||||
| install -o root -g root -m 644 files/fstab $R/etc/fstab | ||||
| # Avoid swapping and increase cache sizes | ||||
| install -o root -g root -m 644 files/sysctl.d/81-rpi-vm.conf $R/etc/sysctl.d/81-rpi-vm.conf | ||||
