mirror of
https://github.com/kernelkit/infix.git
synced 2026-07-22 01:13:00 +02:00
Tobias WaldekranzandJoachim Wiberg
308a620b69
Make the traditional FITs smaller by: - Filtering out the kernel image from the rootfs, since the FIT way is to ship it separately. - Gzipping the kernel in the FIT, since aarch64 uses the uncompressed "Image" format, and squashfs won't take care of it for us.
119 lines
2.1 KiB
Bash
Executable File
119 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
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die()
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{
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echo "$@" >&2
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exit 1
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}
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load_cfg()
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{
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local tmp=$(mktemp -p /tmp)
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grep ^FIT_ $BR2_CONFIG >$tmp
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. $tmp
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rm $tmp
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}
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load_cfg
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[ "$FIT_IMAGE" = "y" ] || exit 0
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work=$BUILD_DIR/fit-image-local
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dtbs=$(find $BINARIES_DIR -name '*.dtb')
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kernel=$(find $BINARIES_DIR -name '*Image' | head -n1)
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squash=$BINARIES_DIR/rootfs.squashfs
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mkdir -p $work
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gzip <$kernel >$work/Image.gz
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kernel=$work/Image.gz
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rm -rf $work/rootfs
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unsquashfs -f -d $work/rootfs $squash
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rm -f $work/rootfs/boot/*Image
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squash=$work/rootfs-no-kernel.squashfs
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rm -f $squash
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mksquashfs $work/rootfs $squash
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# mkimage will only align images to 4 bytes, but U-Boot will leave
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# both DTB and ramdisk in place when starting the kernel. So we pad
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# all components up to a 4k boundary.
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truncate -s %4k $kernel $dtbs
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: >$work/dtbs.itsi
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: >$work/cfgs.itsi
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for dtb in $dtbs; do
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name=$(basename $dtb .dtb)
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cat <<EOF >>$work/dtbs.itsi
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$name-dtb {
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description = "$name";
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type = "flat_dt";
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arch = "$FIT_ARCH";
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compression = "none";
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data = /incbin/("$dtb");
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};
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EOF
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cat <<EOF >>$work/cfgs.itsi
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$name {
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description = "$name";
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kernel = "kernel";
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ramdisk = "ramdisk";
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fdt = "$name-dtb";
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};
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EOF
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done
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: >$work/kernel-load.itsi
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if [ "$FIT_KERNEL_LOAD_ADDR" ]; then
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cat <<EOF >$work/kernel-load.itsi
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load = <$FIT_KERNEL_LOAD_ADDR>;
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entry = <$FIT_KERNEL_LOAD_ADDR>;
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EOF
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fi
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cat <<EOF >$work/infix.its
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/dts-v1/;
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/ {
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timestamp = <$(date +%s)>;
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description = "Infix ($FIT_ARCH)";
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creator = "infix";
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#address-cells = <0x1>;
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images {
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kernel {
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description = "Linux";
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type = "kernel";
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arch = "$FIT_ARCH";
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os = "linux";
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$(cat $work/kernel-load.itsi)
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compression = "gzip";
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data = /incbin/("$kernel");
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};
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ramdisk {
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description = "Infix";
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type = "ramdisk";
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os = "linux";
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arch = "$FIT_ARCH";
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compression = "none";
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data = /incbin/("$squash");
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};
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$(cat $work/dtbs.itsi)
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};
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configurations {
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$(cat $work/cfgs.itsi)
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};
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};
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EOF
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mkimage \
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-E -p 0x1000 \
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-f $work/infix.its $BINARIES_DIR/infix.itb \
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|| die "Unable to create FIT image"
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