3 # Copyright (C) 2009 Free Software Foundation, Inc.
5 # GRUB is free software: you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation, either version 3 of the License, or
8 # (at your option) any later version.
10 # GRUB is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with GRUB. If not, see <http://www.gnu.org/licenses/>.
18 if [ "x$1" = "x" ]; then
19 echo "Filename required".
22 ioreg
-lw0 -p IODeviceTree
-n efi
-r -x |
grep device-properties |
sed 's/.*<//;s/>.*//;' | xxd
-r -p > $1