sevki
c9e1dba412
setup CI/CD for kernel development - added CodeQL for code scanning - every pr is built as an image and is available for 30days on https://oklinux.dev - tagged and released on github for now Signed-off-by: sevki <s@sevki.io>
155 lines
2.8 KiB
Bash
Executable file
155 lines
2.8 KiB
Bash
Executable file
#!/bin/bash
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# Generate an its script used to build a u-boot fitImage kernel binary
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# that contains the kernel as well as device trees used when booting it
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# via mkimage or dtc.
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# Using mkimage will insert extra hashes that dtc will not add.
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kernel_arch=${ARCH}
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its_out=/dev/stdout
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dtb_dir=.
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compression="none"
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show_usage()
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{
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cat <<-EOF
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$0 [options] <image> <dtbs>
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-a <arch> CPU architecture
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-c <compression> Compression to use (none|lzma|lz4)
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-d <dtb_dir> directory where dtb files exist
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-h shows this message
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-o <its_script> output its script pathname
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-r <ramdisk_path> ramdisk image to include
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$0 Image dts/*.dtb | dtc -I dts -O dtb -p 1024 > Image.fit
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EOF
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}
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die()
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{
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exit 1
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}
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OPTIND=1
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while getopts "a:c:d:ho:r:" opt; do
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case "$opt" in
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a)
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kernel_arch=${OPTARG}
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;;
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c)
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compression=${OPTARG}
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;;
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d)
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dtb_dir=${OPTARG}
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;;
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h)
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show_usage
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exit 0
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;;
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o)
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its_out=${OPTARG}
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;;
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r)
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ramdisk_path=${OPTARG}
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;;
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esac
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done
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shift $((OPTIND-1))
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if [ -z "${kernel_arch}" ]; then
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>&2 echo "ERROR: CPU architecture not specified"
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show_usage
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die
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fi
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image_path=${1}
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shift
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if [[ "${compression}" == "lzma" ]]; then
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lzma -9 -z -f -k "${image_path}" || die
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image_path="${image_path}.lzma"
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elif [[ "${compression}" == "lz4" ]]; then
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lz4 -20 -z -f "${image_path}" "${image_path}.lz4" || die
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image_path="${image_path}.lz4"
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elif [[ "${compression}" != "none" ]]; then
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>&2 echo "ERROR: compression method unknown"
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show_usage
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die
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fi
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cat > "${its_out}" <<-EOF || die
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/dts-v1/;
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/ {
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description = "Chrome OS kernel image with one or more FDT blobs";
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#address-cells = <1>;
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images {
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kernel@1 {
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data = /incbin/("${image_path}");
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type = "kernel_noload";
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arch = "${kernel_arch}";
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os = "linux";
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compression = "${compression}";
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load = <0>;
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entry = <0>;
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};
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EOF
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if [ -n "${ramdisk_path}" ]; then
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cat >> "${its_out}" <<-EOF || die
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ramdisk@1 {
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data = /incbin/("${ramdisk_path}");
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type = "ramdisk";
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arch = "${kernel_arch}";
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os = "linux";
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compression = "gzip";
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load = <0>;
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entry = <0>;
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};
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EOF
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fi
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iter=1
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for dtb in "$@" ; do
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cat >> "${its_out}" <<-EOF || die
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fdt@${iter} {
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description = "$(basename ${dtb})";
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data = /incbin/("${dtb_dir}/${dtb}");
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type = "flat_dt";
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arch = "${kernel_arch}";
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compression = "none";
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hash@1 {
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algo = "sha1";
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};
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};
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EOF
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((++iter))
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done
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cat <<-EOF >>"${its_out}"
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};
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configurations {
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default = "conf@1";
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EOF
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for i in $(seq 1 $((iter-1))) ; do
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cat >> "${its_out}" <<-EOF || die
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conf@${i} {
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kernel = "kernel@1";
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EOF
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if [ -n "${ramdisk_path}" ]; then
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cat >> "${its_out}" <<-EOF || die
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ramdisk = "ramdisk@1";
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EOF
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fi
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cat >> "${its_out}" <<-EOF || die
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fdt = "fdt@${i}";
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};
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EOF
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done
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echo "};" >> "${its_out}"
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echo "};" >> "${its_out}"
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