86 lines
2.4 KiB
Bash
Executable File
86 lines
2.4 KiB
Bash
Executable File
#!/bin/bash
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#patch the target rootfs to add any needed drivers
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. ./common.sh
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. ./image_utils.sh
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print_help() {
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echo "Usage: ./patch_rootfs.sh shim_path reco_path rootfs_dir"
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}
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assert_root
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assert_deps "git gunzip"
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assert_args "$3"
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copy_modules() {
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local shim_rootfs=$(realpath -m $1)
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local reco_rootfs=$(realpath -m $2)
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local target_rootfs=$(realpath -m $3)
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rm -rf "${target_rootfs}/lib/modules"
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cp -r "${shim_rootfs}/lib/modules" "${target_rootfs}/lib/modules"
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mkdir -p "${target_rootfs}/lib/firmware"
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cp -r --remove-destination "${shim_rootfs}/lib/firmware/"* "${target_rootfs}/lib/firmware/"
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cp -r --remove-destination "${reco_rootfs}/lib/firmware/"* "${target_rootfs}/lib/firmware/"
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mkdir -p "${target_rootfs}/lib/modprobe.d/"
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mkdir -p "${target_rootfs}/etc/modprobe.d/"
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cp -r "${reco_rootfs}/lib/modprobe.d/"* "${target_rootfs}/lib/modprobe.d/"
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cp -r "${reco_rootfs}/etc/modprobe.d/"* "${target_rootfs}/etc/modprobe.d/"
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#decompress kernel modules if necessary - debian won't recognize these otherwise
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local compressed_files="$(find "${target_rootfs}/lib/modules" -name '*.gz')"
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if [ "$compressed_files" ]; then
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find "${target_rootfs}/lib/modules" -name "*.gz" | xargs gunzip -k
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fi
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}
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copy_firmware() {
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local firmware_path="/tmp/chromium-firmware"
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local target_rootfs=$(realpath -m $1)
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if [ ! -e "$firmware_path" ]; then
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download_firmware $firmware_path
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fi
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cp -r --remove-destination "${firmware_path}/"* "${target_rootfs}/lib/firmware/"
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}
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download_firmware() {
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local firmware_url="https://chromium.googlesource.com/chromiumos/third_party/linux-firmware"
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local firmware_path=$(realpath -m $1)
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git clone --branch master --depth=1 "${firmware_url}" $firmware_path
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}
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shim_path=$(realpath -m $1)
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reco_path=$(realpath -m $2)
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target_rootfs=$(realpath -m $3)
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shim_rootfs="/tmp/shim_rootfs"
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reco_rootfs="/tmp/reco_rootfs"
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echo "mounting shim"
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shim_loop=$(create_loop "${shim_path}")
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make_mountable "${shim_loop}p3"
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safe_mount "${shim_loop}p3" $shim_rootfs
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echo "mounting recovery image"
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reco_loop=$(create_loop "${reco_path}")
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make_mountable "${reco_loop}p3"
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safe_mount "${reco_loop}p3" $reco_rootfs
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echo "copying modules to rootfs"
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copy_modules $shim_rootfs $reco_rootfs $target_rootfs
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echo "downloading misc firmware"
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copy_firmware $target_rootfs
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echo "unmounting and cleaning up"
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umount $shim_rootfs
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umount $reco_rootfs
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losetup -d $shim_loop
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losetup -d $reco_loop
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echo "done" |