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a63cd2d648
This command can be used to update the kernel of a ChromiumOS target. Much thanks to snanda for the inspiration and instructions. BUG=9864 TEST=Verified that it works. Change-Id: I66f7d940e0dc59b0e1a50409a7155fe0ba7157fe Review URL: http://codereview.chromium.org/5550001
87 lines
2.0 KiB
Bash
Executable File
87 lines
2.0 KiB
Bash
Executable File
#!/bin/bash
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# Copyright (c) 2009-2010 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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# Script to update the kernel on a live running ChromiumOS instance.
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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 $0)/common.sh"
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. "$(dirname $0)/remote_access.sh"
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DEFINE_string board "" "Override board reported by target"
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DEFINE_string partition "" "Override kernel partition reported by target"
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function cleanup {
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cleanup_remote_access
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rm -rf "${TMP}"
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}
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# Ask the target what the kernel partition is
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function learn_partition() {
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[ -n "${FLAGS_partition}" ] && return
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remote_sh cat /proc/cmdline
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if echo "${REMOTE_OUT}" | grep -q "/dev/sda3"; then
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FLAGS_partition="/dev/sda2"
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else
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FLAGS_partition="/dev/sda4"
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fi
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if [ -z "${FLAGS_partition}" ]; then
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error "Partition required"
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exit 1
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fi
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info "Target reports kernel partition is ${FLAGS_partition}"
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}
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function main() {
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assert_outside_chroot
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cd $(dirname "$0")
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FLAGS "$@" || exit 1
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eval set -- "${FLAGS_ARGV}"
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set -e
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trap cleanup EXIT
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TMP=$(mktemp -d /tmp/image_to_live.XXXX)
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remote_access_init
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learn_board
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remote_sh uname -r -v
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old_kernel="${REMOTE_OUT}"
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cmd="vbutil_kernel --pack new_kern.bin \
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--keyblock /usr/share/vboot/devkeys/kernel.keyblock \
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--signprivate /usr/share/vboot/devkeys/kernel_data_key.vbprivk \
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--version 1 \
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--config ../build/images/${FLAGS_board}/latest/config.txt \
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--bootloader /lib64/bootstub/bootstub.efi \
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--vmlinuz /build/${FLAGS_board}/boot/vmlinuz"
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./enter_chroot.sh -- "${cmd}"
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learn_partition
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remote_cp_to new_kern.bin /tmp
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remote_sh dd if=/tmp/new_kern.bin of="${FLAGS_partition}"
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remote_reboot
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remote_sh uname -r -v
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info "old kernel: ${old_kernel}"
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info "new kernel: ${REMOTE_OUT}"
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}
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main $@
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