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#!/bin/bash
# This script will use "list-required-firmware" to scan the kernel source repository
# in combination with its configuration file which drivers are compiled. Some of those
# drivers require proprietary firmware.
#
# All selected drivers are then precomfiled "make drivers/foo/bar.i" and we grep for
# the magic word "UNIQUE_ID_firmware" which identifies firmware files.
CWD=$(pwd)
LINUX_SRC="linux"
LINUX_FIRMWARE="linux-firmware"
KERNEL_VAR_FILE=${CWD}/kernel-vars
if [ ! -d ${LINUX_SRC} ]; then
echo "Kernel source missing"
exit 1
fi
if [ ! -d ${LINUX_FIRMWARE} ]; then
echo "Linux firmware repository missing"
exit 1
fi
. ${KERNEL_VAR_FILE}
result=()
# Retrieve firmware blobs from source files
FW_FILES=$(find ${LINUX_SRC}/debian/linux-image/lib/modules/${KERNEL_VERSION}${KERNEL_SUFFIX}/kernel/drivers/net -name *.ko | xargs modinfo | grep "^firmware:" | awk '{print $2}')
# Debian package will use the descriptive Git commit as version
GIT_COMMIT=$(cd ${CWD}/${LINUX_FIRMWARE}; git describe --always)
VYOS_FIRMWARE_NAME="vyos-linux-firmware"
VYOS_FIRMWARE_DIR="${VYOS_FIRMWARE_NAME}_${GIT_COMMIT}-0_all"
if [ -d ${VYOS_FIRMWARE_DIR} ]; then
# remove Debian package folder and deb file from previous runs
rm -rf ${VYOS_FIRMWARE_DIR}*
fi
mkdir -p ${VYOS_FIRMWARE_DIR}
# Install firmware files to build directory
LINUX_FIRMWARE_BUILD_DIR="${LINUX_FIRMWARE}_${GIT_COMMIT}"
if [ -d ${LINUX_FIRMWARE_BUILD_DIR} ]; then
rm -rf "${LINUX_FIRMWARE_BUILD_DIR}"
fi
mkdir -p "${LINUX_FIRMWARE_BUILD_DIR}"
(
cd ${LINUX_FIRMWARE}
./copy-firmware.sh "${CWD}/${LINUX_FIRMWARE_BUILD_DIR}"
)
# Copy firmware file from linux firmware build directory into
# assembly folder for the vyos-firmware package
SED_REPLACE="s@${CWD}/${LINUX_FIRMWARE}/@@"
for FILE in ${FW_FILES}; do
# If file is a symlink install the symlink target as well
if [ -h "${LINUX_FIRMWARE_BUILD_DIR}/${FILE}" ]; then
TARGET="$(realpath --relative-to="${LINUX_FIRMWARE_BUILD_DIR}" "${LINUX_FIRMWARE_BUILD_DIR}/${FILE}")"
TARGET_DIR="${VYOS_FIRMWARE_DIR}/lib/firmware/$(dirname "${TARGET}")"
if [ ! -f "${TARGET_DIR}/$(basename "${TARGET}")" ]; then
if [ -f "${LINUX_FIRMWARE_BUILD_DIR}/${TARGET}" ]; then
mkdir -p "${TARGET_DIR}"
echo "I: install firmware: ${TARGET}"
cp "${CWD}/${LINUX_FIRMWARE_BUILD_DIR}/${TARGET}" "${TARGET_DIR}"
else
echo "I: firmware file not found: ${TARGET}"
fi
fi
fi
if [ -f ${LINUX_FIRMWARE_BUILD_DIR}/${FILE} ]; then
FW_DIR="${VYOS_FIRMWARE_DIR}/lib/firmware/$(dirname ${FILE})"
mkdir -p "${FW_DIR}"
echo "I: install firmware: ${FILE}"
cp -P "${CWD}/${LINUX_FIRMWARE_BUILD_DIR}/${FILE}" "${FW_DIR}"
else
echo "I: firmware file not found: ${FILE}"
fi
done
echo "I: Create linux-firmware package"
rm -f ${VYOS_FIRMWARE_NAME}_*.deb
fpm --input-type dir --output-type deb --name ${VYOS_FIRMWARE_NAME} \
--maintainer "VyOS Package Maintainers <maintainers@vyos.net>" \
--description "Binary firmware for various drivers in the Linux kernel" \
--architecture all --version ${GIT_COMMIT} --deb-compression gz -C ${VYOS_FIRMWARE_DIR}
rm -rf "${LINUX_FIRMWARE_BUILD_DIR}"
rm -rf ${VYOS_FIRMWARE_DIR}
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