|
|
#
|
|
|
# Build and Setup RPi2/3 Kernel
|
|
|
#
|
|
|
|
|
|
# Load utility functions
|
|
|
. ./functions.sh
|
|
|
|
|
|
# Fetch and build latest raspberry kernel
|
|
|
if [ "$BUILD_KERNEL" = true ] ; then
|
|
|
# Setup source directory
|
|
|
mkdir -p "${R}/usr/src"
|
|
|
|
|
|
# Copy existing kernel sources into chroot directory
|
|
|
if [ -n "$KERNELSRC_DIR" ] && [ -d "$KERNELSRC_DIR" ] ; then
|
|
|
# Copy kernel sources
|
|
|
cp -r "${KERNELSRC_DIR}" "${R}/usr/src"
|
|
|
|
|
|
# Clean the kernel sources
|
|
|
if [ "$KERNELSRC_CLEAN" = true ] && [ "$KERNELSRC_PREBUILT" = false ] ; then
|
|
|
make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" mrproper
|
|
|
fi
|
|
|
else # KERNELSRC_DIR=""
|
|
|
# Create temporary directory for kernel sources
|
|
|
temp_dir=$(sudo -u nobody mktemp -d)
|
|
|
|
|
|
# Fetch current RPi2/3 kernel sources
|
|
|
sudo -u nobody git -C "${temp_dir}" clone --depth=1 "${KERNEL_URL}"
|
|
|
|
|
|
# Copy downloaded kernel sources
|
|
|
mv "${temp_dir}/linux" "${R}/usr/src/"
|
|
|
|
|
|
# Remove temporary directory for kernel sources
|
|
|
rm -fr "${temp_dir}"
|
|
|
|
|
|
# Set permissions of the kernel sources
|
|
|
chown -R root:root "${R}/usr/src"
|
|
|
fi
|
|
|
|
|
|
# Calculate optimal number of kernel building threads
|
|
|
if [ "$KERNEL_THREADS" = "1" ] && [ -r /proc/cpuinfo ] ; then
|
|
|
KERNEL_THREADS=$(grep -c processor /proc/cpuinfo)
|
|
|
fi
|
|
|
|
|
|
# Configure and build kernel
|
|
|
if [ "$KERNELSRC_PREBUILT" = false ] ; then
|
|
|
# Remove device, network and filesystem drivers from kernel configuration
|
|
|
if [ "$KERNEL_REDUCE" = true ] ; then
|
|
|
make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" "${KERNEL_DEFCONFIG}"
|
|
|
sed -i\
|
|
|
-e "s/\(^CONFIG_SND.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_SOUND.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_AC97.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_VIDEO_.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_MEDIA_TUNER.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_DVB.*\=\)[ym]/\1n/"\
|
|
|
-e "s/\(^CONFIG_REISERFS.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_JFS.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_XFS.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_GFS2.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_OCFS2.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_BTRFS.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_HFS.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_JFFS2.*\=\)[ym]/\1n/"\
|
|
|
-e "s/\(^CONFIG_UBIFS.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_SQUASHFS.*\=\)[ym]/\1n/"\
|
|
|
-e "s/\(^CONFIG_W1.*\=\)[ym]/\1n/"\
|
|
|
-e "s/\(^CONFIG_HAMRADIO.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_CAN.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_IRDA.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_BT_.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_WIMAX.*\=\)[ym]/\1n/"\
|
|
|
-e "s/\(^CONFIG_6LOWPAN.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_IEEE802154.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_NFC.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_FB_TFT=.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_TOUCHSCREEN.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_USB_GSPCA_.*\=\).*/\1n/"\
|
|
|
-e "s/\(^CONFIG_DRM.*\=\).*/\1n/"\
|
|
|
"${KERNEL_DIR}/.config"
|
|
|
fi
|
|
|
|
|
|
if [ "$KERNELSRC_CONFIG" = true ] ; then
|
|
|
# Load default raspberry kernel configuration
|
|
|
make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" "${KERNEL_DEFCONFIG}"
|
|
|
|
|
|
if [ ! -z "$KERNELSRC_USRCONFIG" ] ; then
|
|
|
cp $KERNELSRC_USRCONFIG ${KERNEL_DIR}/.config
|
|
|
fi
|
|
|
|
|
|
# Start menu-driven kernel configuration (interactive)
|
|
|
if [ "$KERNEL_MENUCONFIG" = true ] ; then
|
|
|
make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" menuconfig
|
|
|
fi
|
|
|
fi
|
|
|
|
|
|
# Cross compile kernel and modules
|
|
|
make -C "${KERNEL_DIR}" -j${KERNEL_THREADS} ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" zImage modules dtbs
|
|
|
fi
|
|
|
|
|
|
# Check if kernel compilation was successful
|
|
|
if [ ! -r "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/zImage" ] ; then
|
|
|
echo "error: kernel compilation failed! (zImage not found)"
|
|
|
cleanup
|
|
|
exit 1
|
|
|
fi
|
|
|
|
|
|
# Install kernel modules
|
|
|
if [ "$ENABLE_REDUCE" = true ] ; then
|
|
|
make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_MOD_STRIP=1 INSTALL_MOD_PATH=../../.. modules_install
|
|
|
else
|
|
|
make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_MOD_PATH=../../.. modules_install
|
|
|
|
|
|
# Install kernel firmware
|
|
|
make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_FW_PATH=../../../lib firmware_install
|
|
|
fi
|
|
|
|
|
|
# Install kernel headers
|
|
|
if [ "$KERNEL_HEADERS" = true ] && [ "$KERNEL_REDUCE" = false ] ; then
|
|
|
make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_HDR_PATH=../.. headers_install
|
|
|
fi
|
|
|
|
|
|
# Prepare boot (firmware) directory
|
|
|
mkdir "${BOOT_DIR}"
|
|
|
|
|
|
# Get kernel release version
|
|
|
KERNEL_VERSION=`cat "${KERNEL_DIR}/include/config/kernel.release"`
|
|
|
|
|
|
# Copy kernel configuration file to the boot directory
|
|
|
install_readonly "${KERNEL_DIR}/.config" "${R}/boot/config-${KERNEL_VERSION}"
|
|
|
|
|
|
# Copy dts and dtb device tree sources and binaries
|
|
|
mkdir "${BOOT_DIR}/overlays"
|
|
|
install_readonly "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/"*.dtb "${BOOT_DIR}/"
|
|
|
install_readonly "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/overlays/"*.dtb* "${BOOT_DIR}/overlays/"
|
|
|
install_readonly "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/overlays/README" "${BOOT_DIR}/overlays/README"
|
|
|
|
|
|
if [ "$ENABLE_UBOOT" = false ] ; then
|
|
|
# Convert and copy zImage kernel to the boot directory
|
|
|
"${KERNEL_DIR}/scripts/mkknlimg" "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/zImage" "${BOOT_DIR}/${KERNEL_IMAGE}"
|
|
|
else
|
|
|
# Copy zImage kernel to the boot directory
|
|
|
install_readonly "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/zImage" "${BOOT_DIR}/${KERNEL_IMAGE}"
|
|
|
fi
|
|
|
|
|
|
# Remove kernel sources
|
|
|
if [ "$KERNEL_REMOVESRC" = true ] ; then
|
|
|
rm -fr "${KERNEL_DIR}"
|
|
|
else
|
|
|
make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" modules_prepare
|
|
|
|
|
|
# Create symlinks for kernel modules
|
|
|
ln -sf "${KERNEL_DIR}" "${R}/lib/modules/${KERNEL_VERSION}/build"
|
|
|
ln -sf "${KERNEL_DIR}" "${R}/lib/modules/${KERNEL_VERSION}/source"
|
|
|
fi
|
|
|
|
|
|
else # BUILD_KERNEL=false
|
|
|
# Kernel installation
|
|
|
chroot_exec apt-get -qq -y --no-install-recommends install linux-image-"${COLLABORA_KERNEL}" raspberrypi-bootloader-nokernel
|
|
|
|
|
|
# Install flash-kernel last so it doesn't try (and fail) to detect the platform in the chroot
|
|
|
chroot_exec apt-get -qq -y install flash-kernel
|
|
|
|
|
|
# Check if kernel installation was successful
|
|
|
VMLINUZ="$(ls -1 ${R}/boot/vmlinuz-* | sort | tail -n 1)"
|
|
|
if [ -z "$VMLINUZ" ] ; then
|
|
|
echo "error: kernel installation failed! (/boot/vmlinuz-* not found)"
|
|
|
cleanup
|
|
|
exit 1
|
|
|
fi
|
|
|
# Copy vmlinuz kernel to the boot directory
|
|
|
install_readonly "${VMLINUZ}" "${BOOT_DIR}/${KERNEL_IMAGE}"
|
|
|
fi
|
|
|
|
