13-kernel.sh
152 lines
| 5.3 KiB
| application/x-sh
|
BashLexer
/ bootstrap.d / 13-kernel.sh
Filip Pytloun
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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 | ||||
Jan Wagner
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r72 | # Setup source directory | ||
mkdir -p $R/usr/src | ||||
Filip Pytloun
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r56 | |||
Jan Wagner
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r72 | # Copy existing kernel sources into chroot directory | ||
if [ -n "$KERNEL_SRCDIR" ] && [ -d "$KERNEL_SRCDIR" ] ; then | ||||
# Copy kernel sources | ||||
cp -r "${KERNEL_SRCDIR}" "${R}/usr/src" | ||||
# Clean the kernel sources | ||||
if [ "$KERNEL_CLEANSRC" = true ] ; then | ||||
make -C $R/usr/src/linux ARCH=${KERNEL_ARCH} CROSS_COMPILE=${CROSS_COMPILE} mrproper | ||||
fi | ||||
else # KERNEL_SRCDIR="" | ||||
# Fetch current raspberrypi kernel sources | ||||
git -C $R/usr/src clone --depth=1 https://github.com/raspberrypi/linux | ||||
fi | ||||
Jan Wagner
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r67 | |||
# Calculate optimal number of kernel building threads | ||||
Jan Wagner
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r72 | if [ "$KERNEL_THREADS" = "1" ] ; then | ||
if [ -r /proc/cpuinfo ] ; then | ||||
Jan Wagner
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r67 | KERNEL_THREADS=$(grep -c processor /proc/cpuinfo) | ||
fi | ||||
fi | ||||
Filip Pytloun
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r56 | |||
Jan Wagner
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r72 | if [ "$KERNEL_CONFIGSRC" = true ] ; then | ||
# Load default raspberry kernel configuration | ||||
make -C $R/usr/src/linux ARCH=${KERNEL_ARCH} CROSS_COMPILE=${CROSS_COMPILE} ${KERNEL_DEFCONFIG} | ||||
# Start menu-driven kernel configuration (interactive) | ||||
if [ "$KERNEL_MENUCONFIG" = true ] ; then | ||||
make -C $R/usr/src/linux ARCH=${KERNEL_ARCH} CROSS_COMPILE=${CROSS_COMPILE} menuconfig | ||||
fi | ||||
Jan Wagner
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r71 | fi | ||
Filip Pytloun
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r56 | # Cross compile kernel and modules | ||
Jan Wagner
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r71 | make -C $R/usr/src/linux -j${KERNEL_THREADS} ARCH=${KERNEL_ARCH} CROSS_COMPILE=${CROSS_COMPILE} zImage modules dtbs | ||
Filip Pytloun
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r56 | |||
Jan Wagner
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r72 | # Check if kernel compilation was successful | ||
if [ ! -r $R/usr/src/linux/arch/${KERNEL_ARCH}/boot/zImage ] ; then | ||||
echo "error: kernel compilation failed!" | ||||
cleanup | ||||
exit 1 | ||||
fi | ||||
Filip Pytloun
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r56 | # Install kernel modules | ||
Jan Wagner
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r73 | if [ "$ENABLE_REDUCE" = true ] ; then | ||
make -C $R/usr/src/linux ARCH=${KERNEL_ARCH} CROSS_COMPILE=${CROSS_COMPILE} INSTALL_MOD_STRIP=1 INSTALL_MOD_PATH=../../.. modules_install | ||||
else | ||||
make -C $R/usr/src/linux ARCH=${KERNEL_ARCH} CROSS_COMPILE=${CROSS_COMPILE} INSTALL_MOD_PATH=../../.. modules_install | ||||
fi | ||||
Filip Pytloun
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r60 | |||
# Install kernel headers | ||||
Jan Wagner
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r72 | if [ "$KERNEL_HEADERS" = true ] ; then | ||
Jan Wagner
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r71 | make -C $R/usr/src/linux ARCH=${KERNEL_ARCH} CROSS_COMPILE=${CROSS_COMPILE} 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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r71 | $R/usr/src/linux/scripts/mkknlimg $R/usr/src/linux/arch/${KERNEL_ARCH}/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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r71 | 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 $R/boot/firmware/overlays/ | ||||
Jan Wagner
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r67 | |||
# Remove kernel sources | ||||
Jan Wagner
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r72 | if [ "$KERNEL_RMSRC" = true ] ; then | ||
Jan Wagner
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r67 | rm -fr $R/usr/src/linux | ||
fi | ||||
Filip Pytloun
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r56 | |||
Jan Wagner
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r71 | # Install raspberry bootloader and flash-kernel packages | ||
Filip Pytloun
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r56 | chroot_exec apt-get -qq -y --no-install-recommends install raspberrypi-bootloader-nokernel | ||
Jan Wagner
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r70 | else # BUILD_KERNEL=false | ||
Filip Pytloun
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r56 | # Kernel installation | ||
Jan Wagner
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r67 | chroot_exec apt-get -qq -y --no-install-recommends install linux-image-${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 $R/boot/firmware/kernel7.img | ||||
fi | ||||
Jan Wagner
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r71 | # Setup firmware boot cmdline | ||
Vincent Knecht
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r66 | if [ "$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 ${CMDLINE}" | ||||
fi | ||||
Filip Pytloun
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r56 | |||
Jan Wagner
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r71 | # Add serial console support | ||
Filip Pytloun
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r56 | if [ "$ENABLE_CONSOLE" = true ] ; then | ||
CMDLINE="${CMDLINE} console=ttyAMA0,115200 kgdboc=ttyAMA0,115200" | ||||
fi | ||||
Jan Wagner
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r71 | # Remove IPv6 networking support | ||
Filip Pytloun
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r56 | if [ "$ENABLE_IPV6" = false ] ; then | ||
CMDLINE="${CMDLINE} ipv6.disable=1" | ||||
fi | ||||
Jan Wagner
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r71 | # Install firmware boot cmdline | ||
Filip Pytloun
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r56 | echo "${CMDLINE}" >$R/boot/firmware/cmdline.txt | ||
Jan Wagner
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r71 | # Install firmware config | ||
Jan Wagner
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r67 | install_readonly files/boot/config.txt $R/boot/firmware/config.txt | ||
Filip Pytloun
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r56 | |||
Jan Wagner
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r71 | # Setup minimal GPU memory allocation size: 16MB (no X) | ||
Filip Pytloun
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r56 | if [ "$ENABLE_MINGPU" = true ] ; then | ||
echo "gpu_mem=16" >>$R/boot/firmware/config.txt | ||||
fi | ||||
Jan Wagner
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r71 | # Create firmware configuration and cmdline symlinks | ||
Filip Pytloun
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r56 | ln -sf firmware/config.txt $R/boot/config.txt | ||
ln -sf firmware/cmdline.txt $R/boot/cmdline.txt | ||||
Jan Wagner
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r71 | # Install and setup kernel modules to load at boot | ||
Filip Pytloun
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r56 | mkdir -p $R/lib/modules-load.d/ | ||
Jan Wagner
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r71 | install_readonly files/modules/rpi2.conf $R/lib/modules-load.d/rpi2.conf | ||
Filip Pytloun
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r56 | |||
Jan Wagner
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r71 | # Load hardware random module at boot | ||
Filip Pytloun
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r56 | if [ "$ENABLE_HWRANDOM" = true ] ; then | ||
Jan Wagner
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r71 | sed -i "s/^# bcm2708_rng/bcm2708_rng/" $R/lib/modules-load.d/rpi2.conf | ||
Filip Pytloun
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r56 | fi | ||
Jan Wagner
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r71 | # Load sound module at boot | ||
if [ "$ENABLE_SOUND" = true ] ; then | ||||
sed -i "s/^# snd_bcm2835/snd_bcm2835/" $R/lib/modules-load.d/rpi2.conf | ||||
fi | ||||
Filip Pytloun
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r56 | |||
Jan Wagner
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r71 | # Install kernel modules blacklist | ||
mkdir -p $R/etc/modprobe.d/ | ||||
install_readonly files/modules/raspi-blacklist.conf $R/etc/modprobe.d/raspi-blacklist.conf | ||||
Filip Pytloun
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r56 | |||
Jan Wagner
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r71 | # Install and setup 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 | |||
Jan Wagner
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r71 | # Install sysctl.d configuration files | ||
Jan Wagner
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r67 | install_readonly files/sysctl.d/81-rpi-vm.conf $R/etc/sysctl.d/81-rpi-vm.conf | ||