13-kernel.sh
122 lines
| 4.1 KiB
| application/x-sh
|
BashLexer
/ bootstrap.d / 13-kernel.sh
Filip Pytloun
|
r56 | # | ||
Jan Wagner
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r67 | # Build and Setup RPi2 Kernel | ||
Filip Pytloun
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r56 | # | ||
Jan Wagner
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r67 | # Load utility functions | ||
Filip Pytloun
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r56 | . ./functions.sh | ||
# Fetch and build latest raspberry kernel | ||||
if [ "$BUILD_KERNEL" = true ] ; then | ||||
# Fetch current raspberrypi kernel sources | ||||
Jan Wagner
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r67 | git -C $R/usr/src clone --depth=1 https://github.com/raspberrypi/linux | ||
Filip Pytloun
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r56 | |||
# Load default raspberry kernel configuration | ||||
Jan Wagner
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r67 | make -C $R/usr/src/linux ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- bcm2709_defconfig | ||
# Calculate optimal number of kernel building threads | ||||
if [ "KERNEL_THREADS" = 1 ] ; then | ||||
if [ -f /proc/cpuinfo ] ; then | ||||
KERNEL_THREADS=$(grep -c processor /proc/cpuinfo) | ||||
fi | ||||
fi | ||||
Filip Pytloun
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r56 | |||
# Cross compile kernel and modules | ||||
Jan Wagner
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r67 | make -C $R/usr/src/linux -j${KERNEL_THREADS} ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- zImage modules dtbs | ||
Filip Pytloun
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r56 | |||
# Install kernel modules | ||||
Jan Wagner
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r67 | make -C $R/usr/src/linux ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- INSTALL_MOD_PATH=../../.. modules_install | ||
Filip Pytloun
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r60 | |||
# Install kernel headers | ||||
if [ "$KERNEL_HEADERS" = true ]; then | ||||
Jan Wagner
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r67 | make -C $R/usr/src/linux ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- INSTALL_HDR_PATH=../.. headers_install | ||
Filip Pytloun
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r60 | fi | ||
Filip Pytloun
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r56 | |||
# Copy and rename compiled kernel to boot directory | ||||
mkdir $R/boot/firmware/ | ||||
Jan Wagner
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r67 | $R/usr/src/linux/scripts/mkknlimg $R/usr/src/linux/arch/arm/boot/zImage $R/boot/firmware/kernel7.img | ||
Filip Pytloun
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r56 | |||
# Copy dts and dtb device definitions | ||||
mkdir $R/boot/firmware/overlays/ | ||||
Jan Wagner
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r67 | 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 $R/boot/firmware/overlays/ | ||||
# Remove kernel sources | ||||
if [ "$KERNEL_RMSRC" = true ]; then | ||||
rm -fr $R/usr/src/linux | ||||
fi | ||||
Filip Pytloun
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r56 | |||
# Install raspberry bootloader and flash-kernel | ||||
chroot_exec apt-get -qq -y --no-install-recommends install raspberrypi-bootloader-nokernel | ||||
Jan Wagner
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r70 | else # BUILD_KERNEL=false | ||
Filip Pytloun
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r56 | # Kernel installation | ||
Jan Wagner
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r67 | chroot_exec apt-get -qq -y --no-install-recommends install linux-image-${COLLABORA_KERNEL} raspberrypi-bootloader-nokernel | ||
Filip Pytloun
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r56 | |||
# 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 $R/boot/firmware/kernel7.img | ||||
fi | ||||
# Set up firmware boot cmdline | ||||
Vincent Knecht
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r66 | if [ "$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 ${CMDLINE}" | ||||
fi | ||||
Filip Pytloun
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r56 | |||
# Set up serial console support (if requested) | ||||
if [ "$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 | ||||
Jan Wagner
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r67 | install_readonly files/boot/config.txt $R/boot/firmware/config.txt | ||
Filip Pytloun
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r56 | |||
# Load snd_bcm2835 kernel module at boot time | ||||
if [ "$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 | ||||
Jan Wagner
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r67 | install_readonly files/modprobe.d/raspi-blacklist.conf $R/etc/modprobe.d/raspi-blacklist.conf | ||
Filip Pytloun
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r56 | |||
# Create default fstab | ||||
Jan Wagner
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r67 | install_readonly files/mount/fstab $R/etc/fstab | ||
Vincent Knecht
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r66 | if [ "$ENABLE_SPLITFS" = true ] ; then | ||
sed -i 's/mmcblk0p2/sda1/' $R/etc/fstab | ||||
fi | ||||
Filip Pytloun
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r56 | |||
# Avoid swapping and increase cache sizes | ||||
Jan Wagner
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r67 | install_readonly files/sysctl.d/81-rpi-vm.conf $R/etc/sysctl.d/81-rpi-vm.conf | ||