53 lines
1.5 KiB
Bash
Executable File
53 lines
1.5 KiB
Bash
Executable File
#!/bin/bash
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#build the bootloader image
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. ./common.sh
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. ./image_utils.sh
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. ./shim_utils.sh
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print_help() {
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echo "Usage: ./build.sh output_path shim_path rootfs_dir"
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echo "Valid named arguments (specify with 'key=value'):"
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echo " quiet - Don't use progress indicators which may clog up log files."
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echo " arch - Set this to 'arm64' to specify that the shim is for an ARM chromebook."
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}
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assert_root
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assert_deps "cpio binwalk pcregrep realpath cgpt mkfs.ext4 mkfs.ext2 fdisk lz4"
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assert_args "$3"
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parse_args "$@"
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output_path=$(realpath -m "${1}")
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shim_path=$(realpath -m "${2}")
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rootfs_dir=$(realpath -m "${3}")
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print_info "reading the shim image"
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initramfs_dir=/tmp/shim_initramfs
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kernel_img=/tmp/kernel.img
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rm -rf $initramfs_dir $kernel_img
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extract_initramfs_full $shim_path $initramfs_dir $kernel_img "${args['arch']}"
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print_info "patching initramfs"
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patch_initramfs $initramfs_dir
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print_info "creating disk image"
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rootfs_size=$(du -sm $rootfs_dir | cut -f 1)
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rootfs_part_size=$(($rootfs_size * 12 / 10 + 5))
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#create a 20mb bootloader partition
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#rootfs partition is 20% larger than its contents
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create_image $output_path 20 $rootfs_part_size
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print_info "creating loop device for the image"
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image_loop=$(create_loop ${output_path})
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print_info "creating partitions on the disk image"
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create_partitions $image_loop $kernel_img
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print_info "copying data into the image"
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populate_partitions $image_loop $initramfs_dir $rootfs_dir "${args['quiet']}"
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rm -rf $initramfs_dir $kernel_img
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print_info "cleaning up loop devices"
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losetup -d $image_loop
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print_info "done" |