| #!/bin/sh |
| # |
| # Copyright 2016 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| # |
| # Helper script to update the block_devmode flag in VPD which uses cached |
| # data from dump_vpd_log to avoid unnecessary vpd calls. |
| # |
| # Call with param |
| # --enable to ensure the block_devmode flag in VPD is set or |
| # --disable to remove a potentially existing block_devmode flag. |
| |
| if [ "$1" = "--enable" ]; then |
| DESIRED=1 |
| elif [ "$1" = "--disable" ]; then |
| DESIRED=0 |
| else |
| echo "Invalid or missing parameter!" >&2 |
| exit 1 |
| fi |
| |
| if dump_vpd_log --full --stdout | grep -q block_devmode; then |
| CURRENT=1 |
| else |
| CURRENT=0 |
| fi |
| |
| if [ ${CURRENT} = 0 -a ${DESIRED} = 1 ]; then |
| vpd -i RW_VPD -s block_devmode=1 |
| dump_vpd_log --force |
| fi |
| |
| if [ ${CURRENT} = 1 -a ${DESIRED} = 0 ]; then |
| vpd -i RW_VPD -d block_devmode |
| dump_vpd_log --force |
| fi |
