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18ff72b913
This is a short term fix for machines that can't boot a kernel from the root file system of an SDCard. This issue depends on issue 602027. Review URL: http://codereview.chromium.org/600074
62 lines
1.7 KiB
Bash
Executable File
62 lines
1.7 KiB
Bash
Executable File
#!/bin/bash
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# Copyright (c) 2009 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# Load common constants. This should be the first executable line.
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# The path to common.sh should be relative to your script's location.
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. "$(dirname "$0")/common.sh"
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IMAGES_DIR="${DEFAULT_BUILD_ROOT}/images"
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# Flags
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DEFINE_string from "" "Directory containing rootfs.image and mbr.image"
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DEFINE_string to "" "Destination file for USB image."
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DEFINE_integer offset 0 "Offset to write the kernel to in the destination."
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# Parse command line
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FLAGS "$@" || exit 1
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eval set -- "${FLAGS_ARGV}"
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# Die on any errors.
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set -e
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if [ -z "${FLAGS_from}" -o -z "${FLAGS_to}" -o -z "${FLAGS_offset}" ]
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then
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echo "You must define all of from, to and offset."
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exit 1
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fi
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# Convert args to paths. Need eval to un-quote the string so that shell
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# chars like ~ are processed; just doing FOO=`readlink -f $FOO` won't work.
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FLAGS_from=`eval readlink -f ${FLAGS_from}`
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FLAGS_to=`eval readlink -f ${FLAGS_to}`
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function do_cleanup {
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sync
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sudo umount -l /tmp/kernel_fetch.$$
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rmdir /tmp/kernel_fetch.$$
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}
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trap do_cleanup EXIT
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#
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# Set up loop device. This time it is used to fetch the built kernel from the
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# root image. This kernel is then written to the fourth partition.
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#
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echo "Fetching kernel from root image..."
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mkdir /tmp/kernel_fetch.$$
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sudo mount -o loop "${FLAGS_from}/rootfs.image" /tmp/kernel_fetch.$$
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echo "Writing kernel to ${FLAGS_to} at ${FLAGS_offset}..."
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sudo "${SCRIPTS_DIR}"/file_copy.py \
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if=/tmp/kernel_fetch.$$/boot/vmlinux.uimg \
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of="${FLAGS_to}" \
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seek_bytes="${FLAGS_offset}"
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echo "Done."
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do_cleanup
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trap - EXIT
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