From 237e23bb19f49814584d99cc6c0a2e80dad46be8 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 3 Mar 2021 19:36:13 +0200 Subject: utils: Add kernel headers update script Add a script to update the local copy of kernel headers (in include/linux/) from a Linux kernel git tree. The script handles header installation, manual processing of the IPU3 header that is still in staging, and update of the README file. Signed-off-by: Laurent Pinchart Reviewed-by: Kieran Bingham --- utils/update-kernel-headers.sh | 89 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+) create mode 100755 utils/update-kernel-headers.sh diff --git a/utils/update-kernel-headers.sh b/utils/update-kernel-headers.sh new file mode 100755 index 00000000..3c3f34c7 --- /dev/null +++ b/utils/update-kernel-headers.sh @@ -0,0 +1,89 @@ +#!/bin/sh + +# SPDX-License-Identifier: GPL-2.0-or-later +# Update the kernel headers copy from a kernel source tree + +if [ $# != 1 ] ; then + echo "Usage: $0 " + exit 1 +fi + +header_dir="$(dirname "$(realpath "$0")")/../include/linux" +kernel_dir="$1" + +# Bail out if the directory doesn't contain kernel sources +line=$(head -3 "${kernel_dir}/Kbuild" 2>/dev/null | tail -1) +if [ "$line" != "# Kbuild for top-level directory of the kernel" ] ; then + echo "Directory ${kernel_dir} doesn't contain a kernel source tree" + exit 1 +fi + +if [ ! -d "${kernel_dir}/.git" ] ; then + echo "Directory ${kernel_dir} doesn't contain a git tree" + exit 1 +fi + +# Check the kernel version, and reject dirty trees +version=$(git -C "${kernel_dir}" describe --dirty) +echo $version +if echo "${version}" | grep -q dirty ; then + echo "Kernel tree in ${kernel_dir} is dirty" + exit 1 +fi + +# Install the headers to a temporary directory +install_dir=$(mktemp -d) +if [ ! -d "${install_dir}" ] ; then + echo "Failed to create temporary directory" + exit 1 +fi + +trap "rm -rf ${install_dir}" EXIT + +set -e +make -C "${kernel_dir}" O="${install_dir}" headers_install +set +e + +# Copy the headers +headers=" + drm/drm_fourcc.h + linux/dma-buf.h + linux/dma-heap.h + linux/media-bus-format.h + linux/media.h + linux/rkisp1-config.h + linux/v4l2-common.h + linux/v4l2-controls.h + linux/v4l2-mediabus.h + linux/v4l2-subdev.h + linux/videodev2.h +" + +for header in $headers ; do + name=$(basename "${header}") + cp "${install_dir}/usr/include/${header}" "${header_dir}/${name}" +done + +# The IPU3 header is a special case, as it's stored in staging. Handle it +# manually. +(cd "${install_dir}" ; "${kernel_dir}scripts/headers_install.sh" \ + "${kernel_dir}/drivers/staging/media/ipu3/include/intel-ipu3.h" \ + "${header_dir}/intel-ipu3.h") + +# Update the README file +cat < "${header_dir}/README" +# SPDX-License-Identifier: CC0-1.0 + +Files in this directory are imported from ${version} of the Linux kernel. Do not +modify them manually. +EOF + +# Cleanup +rm -rf "${install_dir}" + +cat <