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update_kernel: be smarter

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Auto-detect use of verity, and if verity is not used, copy over modules and firmware.

Also, while I was at it, I added a --noreboot argument.

And also copy over vmlinux.uimg on ARM if on non-verity.

Change-Id: Ida9d3fbf4f342db65ebd0002a8b1a528440ea7fe

BUG=chromium-os:13321
TEST=Build kernel, try updating on x86 and ARM, both with and without verity

Review URL: http://codereview.chromium.org/6881029
This commit is contained in:
Olof Johansson 2011-04-20 17:27:37 -07:00
parent 95026958c1
commit 8488f5a3c5
1 changed files with 40 additions and 24 deletions
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64
update_kernel.sh
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@ -36,8 +36,7 @@ DEFINE_string board "" "Override board reported by target"
DEFINE_string device "" "Override boot device reported by target"
DEFINE_string partition "" "Override kernel partition reported by target"
DEFINE_string arch "" "Override architecture reported by target"
DEFINE_boolean modules false "Update modules on target"
DEFINE_boolean firmware false "Update firmware on target"
DEFINE_boolean reboot $FLAGS_TRUE "Reboot system after update"
# Parse command line.
FLAGS "$@" || exit 1
@ -60,12 +59,17 @@ function learn_device() {
}
# Ask the target what the kernel partition is
function learn_partition() {
function learn_partition_and_ro() {
[ -n "${FLAGS_partition}" ] && return
! remote_sh rootdev
if [ "${REMOTE_OUT}" == "/dev/dm-0" ]; then
remote_sh ls /sys/block/dm-0/slaves
REMOTE_OUT="/dev/${REMOTE_OUT}"
REMOTE_VERITY=${FLAGS_TRUE}
info "System is using verity: not updating firmware"
else
REMOTE_VERITY=${FLAGS_FALSE}
info "System is not using verity: updating firmware and modules"
fi
if [ "${REMOTE_OUT}" == "${FLAGS_device}3" ]; then
FLAGS_partition="${FLAGS_device}2"
@ -96,6 +100,16 @@ function make_kernelimage() {
fi
}
function copy_kernelimage() {
if [ "${FLAGS_arch}" == "arm" -a ${REMOTE_VERITY} -eq ${FLAGS_FALSE} ]; then
remote_cp_to /build/${FLAGS_board}/boot/vmlinux.uimg /boot
fi
remote_cp_to new_kern.bin /tmp
remote_sh dd if=/tmp/new_kern.bin of="${FLAGS_partition}"
}
function main() {
trap cleanup EXIT
@ -109,7 +123,7 @@ function main() {
learn_device
learn_partition
learn_partition_and_ro
remote_sh uname -r -v
@ -117,35 +131,37 @@ function main() {
make_kernelimage
remote_cp_to new_kern.bin /tmp
remote_sh dd if=/tmp/new_kern.bin of="${FLAGS_partition}"
if [[ ${FLAGS_modules} -eq ${FLAGS_TRUE} ]]; then
echo "copying modules"
if [[ ${REMOTE_VERITY} -eq ${FLAGS_FALSE} ]]; then
tar -C /build/"${FLAGS_board}"/lib/modules -cjf /tmp/new_modules.tar .
remote_cp_to /tmp/new_modules.tar /tmp/
remote_sh mount -o remount,rw /
remote_sh tar -C /lib/modules -xjf /tmp/new_modules.tar
fi
if [[ ${FLAGS_firmware} -eq ${FLAGS_TRUE} ]]; then
echo "copying firmware"
tar -C /build/"${FLAGS_board}"/lib/firmware -cjf /tmp/new_firmware.tar .
remote_sh mount -o remount,rw /
echo "copying modules"
remote_cp_to /tmp/new_modules.tar /tmp/
remote_sh tar -C /lib/modules -xjf /tmp/new_modules.tar
echo "copying firmware"
remote_cp_to /tmp/new_firmware.tar /tmp/
remote_sh mount -o remount,rw /
remote_sh tar -C /lib/firmware -xjf /tmp/new_firmware.tar
fi
remote_reboot
echo "copying kernel"
remote_sh uname -r -v
info "old kernel: ${old_kernel}"
info "new kernel: ${REMOTE_OUT}"
copy_kernelimage
if [ "${FLAGS_reboot}" -eq ${FLAGS_TRUE} ]; then
echo "rebooting"
remote_reboot
remote_sh uname -r -v
info "old kernel: ${old_kernel}"
info "new kernel: ${REMOTE_OUT}"
else
info "Not rebooting (per request)"
fi
}
main "$@"