3 ###############################################################################
5 ## ofpath: determine OpenFirmware path from unix device node
6 ## Copyright (C) 2000, 2001, 2002 Ethan Benson
8 ## Portions based on show_of_path.sh:
10 ## Copyright (C) 2000 Olaf Hering <olh@suse.de>
12 ## This program is free software; you can redistribute it and/or
13 ## modify it under the terms of the GNU General Public License
14 ## as published by the Free Software Foundation; either version 2
15 ## of the License, or (at your option) any later version.
17 ## This program is distributed in the hope that it will be useful,
18 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ## GNU General Public License for more details.
22 ## You should have received a copy of the GNU General Public License
23 ## along with this program; if not, write to the Free Software
24 ## Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26 ###############################################################################
28 PATH="/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin"
30 VERSION=1.0.3-DEVEL_DO_NOT_DISTRIBUTE-patch-36
39 Written by Ethan Benson
40 Portions based on show_of_path.sh written by Olaf Hering
42 Copyright (C) 2000, 2001, 2002 Ethan Benson
43 Portions Copyright (C) 2000 Olaf Hering
44 This is free software; see the source for copying conditions. There is NO
45 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
52 "Usage: $PRG [OPTION]... FILE
53 Find OpenFirmware device path from unix device node.
55 --debug print boring junk only useful for debugging
56 -h, --help display this help and exit
57 -V, --version output version information and exit"
60 ## a small seq replacement, seq is not present on boot/rescue floppies.
66 while [ "$v" -gt 1 ] ; do
74 ## a kludge to replace wc -l, wc is not present on boot/rescue
75 ## floppies. max file is 145 lines, 3 hosts * 16 devs each * 3 lines
76 ## per device, + 1 "Attached Devices:" line.
83 local file="$(cat $1)"
87 if [ -z "$file" ] ; then
92 ## use real wc if available
93 if (command -v wc > /dev/null 2>&1) ; then
94 if [ -x `command -v wc` ] ; then
95 lines="$(echo "$file" | wc -l)"
105 for i in `smallseq 145` ; do
106 local b="$(echo "$file" | tail -n $i)"
107 if [ "$v" = "$b" ] ; then
116 ## small tr replacment which handles a specific need of this script.
120 a) echo 1 ;; b) echo 2 ;; c) echo 3 ;; d) echo 4 ;; e) echo 5 ;; f) echo 6 ;;
121 g) echo 7 ;; h) echo 8 ;; i) echo 9 ;; j) echo 10 ;; k) echo 11 ;; l) echo 12 ;;
122 m) echo 13 ;; n) echo 14 ;; o) echo 15 ;; p) echo 16 ;;
123 1) echo a ;; 2) echo b ;; 3) echo c ;; 4) echo d ;; 5) echo e ;;
124 6) echo f ;; 7) echo g ;; 8) echo h ;; 9) echo i ;; 10) echo j ;;
125 11) echo k ;; 12) echo l ;; 13) echo m ;; 14) echo n ;; 15) echo o ;;
131 ## replacment for grep -l which is not supported by busybox grep.
132 ## echo $(cat..) hack needed because busybox grep barfs with `line too
133 ## long' when fed /proc files. the for loop is needed since busybox
134 ## grep seems to have somewhat broken regexp support.
135 ## usage: lgrep filename regexp regexp ...
141 echo "$(cat "$f")" | grep -q "$i" && echo "$f" && break
146 ## if readlink is missing use a kludge
147 if (command -v readlink > /dev/null 2>&1) ; then
152 local SYMTARGET="$(v=`ls -l "$2" 2>/dev/null` ; echo ${v##*> })"
153 if [ -n "$SYMTARGET" ] ; then
162 ## a function to print relevant scsi host path when there is more then
163 ## one. this function also takes care of stripping off the trailing
184 ## this finds information we need on both newworld and oldworld macs.
185 ## mainly what scsi host a disk is attached to.
188 ## see if system has scsi at all
189 if [ ! -f /proc/scsi/scsi ] ; then
190 echo 1>&2 "$PRG: /dev/$DEVNODE: Device not configured"
194 ## first we have to figure out the SCSI ID, have to do that
195 ## anyway [to] find the attached scsi disks = "Direct-Access" and
196 ## stop at sda=1 sdb=2 or whatever count in 3 lines steps
198 ## get last letter of device node, ie sda -> a
199 SUBNODE=${DEVNODE##*sd}
201 ## turn SUBNODE above into a number starting at 1, ie a -> 1
202 SUBDEV="$(smalltr $SUBNODE)"
203 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: SUBNODE=$SUBNODE SUBDEV=$SUBDEV"
207 ## copy scsi file into a variable removing "Attached Devices"
208 ## which is the first line. this avoids a lot of
209 ## [incmopatible] crap later, and improves readability.
211 ## find number of lines once and recycle that number, to save
212 ## some time (linecount is a bit slow). subtract one line
213 ## to scrap Attached Devices:
215 SCSILINES="$(($(linecount /proc/scsi/scsi) - 1))"
217 if [ "$SUBDEV" -gt "$(cat /proc/scsi/scsi | grep Direct-Access | linecount)" ] ; then
218 echo 1>&2 "$PRG: /dev/$DEVNODE: Device not configured"
222 PROCSCSI="$(cat /proc/scsi/scsi | tail -n $SCSILINES)"
224 for i in $(smallseq $(($SCSILINES / 3))) ; do
226 ## put every scsi device into one single line
227 DEVINFO="$(echo "$PROCSCSI" | head -n $(($i * 3)) | tail -n 3)"
228 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: DEVINFO=$DEVINFO"
230 ## cut the type field, expect "Direct-Access" later.
231 DEVTYPE="$(v=$(echo ${DEVINFO##*Type: }) ; echo ${v%% *})"
232 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: DEVTYPE=$DEVTYPE"
234 ## get the device id.
235 DEVID="$(v=$(echo ${DEVINFO##*Id: }) ; n=$(echo ${v%% *}) ; echo ${n#*0})"
236 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: DEVID=$DEVID"
238 ## get the scsi host id.
239 DEVHOST="$(v=$(echo ${DEVINFO##*Host: scsi}) ; echo ${v%% *})"
240 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: DEVHOST=$DEVHOST"
242 if [ "$DEVTYPE" = "Direct-Access" ] ; then
243 DEVCOUNT="$(($DEVCOUNT + 1))"
244 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: DEVCOUNT=$DEVCOUNT"
245 if [ "$SUBDEV" = "$DEVCOUNT" ] ; then
248 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: DEVICE_HOST=$DEVICE_HOST"
254 ## figure out what the scsi driver is, it is /proc/scsi/dirname.
255 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: DEVICE_HOST=$DEVICE_HOST"
256 SCSI_DRIVER="$(x=`ls /proc/scsi/*/$DEVICE_HOST 2>/dev/null | cat` ; y=`echo ${x##*proc/scsi/}` ; echo ${y%%/*})"
257 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: SCSI_DRIVER=$SCSI_DRIVER"
259 ## figure out which host we found.
260 SCSI_HOSTNUMBER="$(v=`ls /proc/scsi/$SCSI_DRIVER/* 2>/dev/null | cat | grep -n "$DEVICE_HOST\>"` ; echo ${v%%:*})"
261 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: SCSI_HOSTNUMBER=$SCSI_HOSTNUMBER"
266 ## generic function that can find OF device paths for scsi devices,
267 ## must be run after scsiinfo().
270 case "$SCSI_DRIVER" in
272 HOST_LIST="$(for i in `find /proc/device-tree -name compatible` ; do
273 lgrep "$i" "^ADPT" "^pci900[45]" "^pciclass,01000" ; done)"
274 DEVICE_PATH="$(printhost $SCSI_HOSTNUMBER $HOST_LIST)"
275 echo "${DEVICE_PATH##*device-tree}/@$DEVICE_ID:$PARTITION"
278 HOST_LIST="$(for i in `find /proc/device-tree -name compatible` ; do
279 lgrep "$i" "^Symbios" "^pci1000" "^pciclass,01000" ; done)"
280 DEVICE_PATH="$(printhost $SCSI_HOSTNUMBER $HOST_LIST)"
281 echo "${DEVICE_PATH##*device-tree}/@$DEVICE_ID:$PARTITION"
284 HOST_LIST="$(for i in `find /proc/device-tree -name compatible` ; do
285 lgrep "$i" "mesh" ; done)"
286 DEVICE_PATH="$(printhost $SCSI_HOSTNUMBER $HOST_LIST)"
287 echo "${DEVICE_PATH##*device-tree}/@$DEVICE_ID:$PARTITION"
290 echo 1>&2 "$PRG: Driver: $SCSI_DRIVER is not supported"
299 if [ ! -L "/proc/ide/$DEVNODE" ] ; then
300 echo 2>&1 "$PRG: /dev/$DEVNODE: Device not configured"
304 local IDEBUS="$(v=`readlink /proc/ide/$DEVNODE` ; echo ${v%%/*} )"
305 local OF1275IDE="/proc/ide/$IDEBUS/devspec"
307 if [ ! -f "$OF1275IDE" ] ; then
308 case "$(cat /proc/device-tree/model)" in
310 local CDROM="$(grep "^drive name:" /proc/sys/dev/cdrom/info 2> /dev/null | grep $DEVNODE)"
311 if [ -z "$CDROM" ] ; then
312 echo "ultra2:$PARTITION"
318 if [ ! -L "/proc/ide/$DEVNODE" ] ; then
319 echo "$PRG: /dev/$DEVNODE: Device not configured"
322 local CDROM="$(grep "^drive name:" /proc/sys/dev/cdrom/info 2> /dev/null | grep $DEVNODE)"
323 if [ -z "$CDROM" ] ; then
324 if [ "$DEVNODE" = hda ] ; then
327 echo "ultra1:$PARTITION"
335 local DEVSPEC="$(cat /proc/ide/$IDEBUS/devspec)"
336 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: DEVSPEC=$DEVSPEC"
339 echo "${DEVSPEC}/disk@0:$PARTITION"
343 echo "${DEVSPEC}/disk@1:$PARTITION"
347 echo 1>&2 "$PRG: /dev/$DEVNODE is not supported"
354 ## figure out the OpenFirmware device path for newworld macs.
355 ## sd* scsi disks , hd* ide disks.
360 if ls -l /proc/device-tree | grep -q ^lr ; then
363 echo 1>&2 "$PRG: /proc/device-tree is broken. Do not use BootX to boot, use yaboot."
364 echo 1>&2 "$PRG: The yaboot HOWTO can be found here: http://www.alaska.net/~erbenson/doc"
368 ## use common scsiinfo function to get info we need.
371 ## now we have the data for /@$DEVID:$PARTITION
372 ## find the actual OF path.
373 scsi_ofpath || return 1
376 ide_ofpath || return 1
379 echo 1>&2 "$PRG: Device: /dev/$DEVNODE is not supported"
388 ## for some reason 2.4 kernels put OF aliases in aliases@0/ instead of plain aliases/
389 if [ -d "/proc/device-tree/aliases" ] ; then
390 local ALIASES="aliases"
391 elif [ -d "/proc/device-tree/aliases@0" ] ; then
392 local ALIASES="aliases@0"
394 echo 1>&2 "$PRG: Cannot find OpenFirmware aliases directory in /proc/device-tree/"
398 local MODEL="$(cat /proc/device-tree/compatible)"
399 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: Oldworld subarch: $MODEL"
402 AAPL,7300*|AAPL,7500*|AAPL,8500*|AAPL,9500*|AAPL,\?\?\?\?*)
406 case "$SCSI_DRIVER" in
408 echo $(cat /proc/device-tree/$ALIASES/scsi-int)/sd\@$DEVICE_ID:$PARTITION
411 echo $(cat /proc/device-tree/$ALIASES/scsi)/sd\@$DEVICE_ID:$PARTITION
414 echo 1>&2 "$PRG: Driver $SCSI_DRIVER is not supported"
420 echo 1>&2 "$PRG: Unsupported device: /dev/$DEVNODE"
429 case "$SCSI_DRIVER" in
431 echo $(cat /proc/device-tree/$ALIASES/scsi)/sd\@$DEVICE_ID:$PARTITION
434 echo 1>&2 "$PRG: Driver $SCSI_DRIVER is not supported"
440 echo $(cat /proc/device-tree/$ALIASES/ata)/ATA-Disk\@0:$PARTITION
443 echo $(cat /proc/device-tree/$ALIASES/ata)/ATA-Disk\@1:$PARTITION
446 echo 1>&2 "$PRG: Device: /dev/$DEVNODE is not supported"
454 case "$SCSI_DRIVER" in
456 echo $(cat /proc/device-tree/$ALIASES/scsi)/sd\@$DEVICE_ID:$PARTITION
459 echo 1>&2 "$PRG: Driver $SCSI_DRIVER is not supported"
465 echo $(cat /proc/device-tree/$ALIASES/ata)/ata-disk\@0:$PARTITION
468 echo $(cat /proc/device-tree/$ALIASES/ata)/ata-disk\@1:$PARTITION
471 echo 1>&2 "$PRG: Device: /dev/$DEVNODE is not supported"
475 AAPL,Gossamer*|AAPL,PowerMac\ G3*)
479 case "$SCSI_DRIVER" in
481 echo $(cat /proc/device-tree/$ALIASES/scsi)/sd\@$DEVICE_ID:$PARTITION
484 echo 1>&2 "$PRG: Driver $SCSI_DRIVER is not supported"
490 echo $(cat /proc/device-tree/$ALIASES/ide0)/ata-disk\@0:$PARTITION
493 echo $(cat /proc/device-tree/$ALIASES/ide0)/ata-disk\@1:$PARTITION
496 echo $(cat /proc/device-tree/$ALIASES/ide1)/ata-disk\@0:$PARTITION
499 echo $(cat /proc/device-tree/$ALIASES/ide1)/ata-disk\@1:$PARTITION
502 echo 1>&2 "$PRG: Device: /dev/$DEVNODE is not supported"
507 if [ -f /proc/device-tree/$ALIASES/ata0 ] ; then
512 if [ -f /proc/device-tree/$ALIASES/ata1 ] ; then
520 case "$SCSI_DRIVER" in
522 echo $(cat /proc/device-tree/$ALIASES/scsi)/sd\@$DEVICE_ID:$PARTITON
525 echo 1>&2 "$PRG: Driver $SCSI_DRIVER is not supported"
531 echo $(cat /proc/device-tree/$ALIASES/$ATA0)/ata-disk\@0:$PARTITION
534 echo $(cat /proc/device-tree/$ALIASES/$ATA0)/ata-disk\@1:$PARTITION
537 echo $(cat /proc/device-tree/$ALIASES/$ATA1)/atapi-disk\@0:$PARTITION
540 echo $(cat /proc/device-tree/$ALIASES/$ATA1)/atapi-disk\@1:$PARTITION
543 echo 1>&2 "$PRG: Unsupported device: /dev/$DEVNODE"
552 case "$SCSI_DRIVER" in
554 echo $(cat /proc/device-tree/$ALIASES/scsi-int)/sd\@$DEVICE_ID:$PARTITON
557 echo $(cat /proc/device-tree/$ALIASES/scsi)/sd\@$DEVICE_ID:$PARTITON
560 echo 1>&2 "$PRG: Driver $SCSI_DRIVER is not supported"
566 echo $(cat /proc/device-tree/$ALIASES/ata0)/ata-disk\@0:$PARTITION
569 echo $(cat /proc/device-tree/$ALIASES/ata0)/ata-disk\@1:$PARTITION
572 echo $(cat /proc/device-tree/$ALIASES/ata1)/atapi-disk\@0:$PARTITION
575 echo $(cat /proc/device-tree/$ALIASES/ata1)/atapi-disk\@1:$PARTITION
578 echo $(cat /proc/device-tree/$ALIASES/ata2):$PARTITION
581 echo $(cat /proc/device-tree/$ALIASES/ata3):$PARTITION
584 echo 1>&2 "$PRG: Unsupported device: /dev/$DEVNODE"
590 echo 1>&2 "$PRG: This machine is not supported: $MODEL"
597 ## find OpenFirmware device path for IBM CHRP hardware (scsi only)
602 if ls -l /proc/device-tree | grep -q ^lr ; then
605 echo 1>&2 "$PRG: /proc/device-tree is broken."
609 ## use common scsiinfo function to get info we need.
612 ## now we have the data for /@$DEVID:$PARTITION
613 ## find the actual OF path.
614 scsi_ofpath || return 1
617 echo 1>&2 "$PRG: Device: /dev/$DEVNODE is not supported"
624 ## If we get lame devfs name, we need to make it foad
628 /dev/ide/*|/dev/scsi/*|/dev/discs/*)
637 ## convert devfs names into normal short ones, written by Tom Rini.
640 ## get partition number, if any
641 local PARTNUM="${1##*[a-z]}"
642 ## Find the bus type.
643 local TYPE="$(v=${1#/dev/} ; echo ${v%/host*})"
644 ## Find the host number.
645 local HOST="$(v=${1#/dev/*/host} ; echo ${v%/bus*})"
646 ## Find the bus number.
647 local BUS="$(v=${1#/dev/*/bus} ; echo ${v%/tar*})"
649 local TARGET="$(v=${1#/dev/*/target} ; echo ${v%/lun*})"
675 echo 1>&2 "$PRG: $1: Unable to translate this device, try again without devfs."
678 local DEV="${DEV}${PARTNUM}"
683 local LUN="$(v=${1#/dev/*/lun} ; echo ${v%/*})"
685 ## In this case, we need to figure out what number our device is
688 ## copy scsi file into a variable removing "Attached Devices"
689 ## which is the first line. this avoids a lot of
690 ## [incmopatible] crap later, and improves readability.
692 ## find number of lines once and recycle that number, to save
693 ## some time (linecount is a bit slow). subtract one line
694 ## to scrap Attached Devices:
696 local SCSILINES="$(($(linecount /proc/scsi/scsi) - 1))"
697 local PROCSCSI="$(cat /proc/scsi/scsi | tail -n $SCSILINES)"
699 for i in $(smallseq $(($SCSILINES / 3))) ; do
701 ## put every scsi device into one single line
702 local DEVINFO="$(echo "$PROCSCSI" | head -n $(($i * 3)) | tail -n 3)"
703 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: fixdevfs: DEVINFO=$DEVINFO"
705 ## cut the type field, expect "Direct-Access" later.
706 local DEVTYPE="$(v=$(echo ${DEVINFO##*Type: }) ; echo ${v%% *})"
707 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: fixdevfs: DEVTYPE=$DEVTYPE"
709 if [ "$DEVTYPE" = "Direct-Access" ] ; then
710 ## Lets find out some more information
711 ## get the device id.
712 local DEVID="$(v=$(echo ${DEVINFO##*Id: }) ; n=$(echo ${v%% *}) ; echo ${n#*0})"
713 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: fixdevfs: DEVID=$DEVID"
715 ## get the device lun.
716 local DEVLUN="$(v=$(echo ${DEVINFO##*Lun: }) ; n=$(echo ${v%% *}) ; echo ${n#*0})"
717 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: fixdevfs: DEVLUN=$DEVLUN"
719 ## get the device channel.
720 local DEVCHAN="$(v=$(echo ${DEVINFO##*Channel: }) ; n=$(echo ${v%% *}) ; echo ${n#*0})"
721 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: fixdevfs: DEVCHAN=$DEVCHAN"
723 ## get the scsi host id.
724 local DEVHOST="$(v=$(echo ${DEVINFO##*Host: scsi}) ; echo ${v%% *})"
725 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: fixdevfs: DEVHOST=$DEVHOST"
727 local DEVCOUNT="$(($DEVCOUNT + 1))"
728 [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: fixdevfs: DEVCOUNT=$DEVCOUNT"
729 if [ "$DEVHOST" = "$HOST" -a "$DEVCHAN" = "$BUS" -a \
730 "$DEVID" = "$TARGET" -a "$DEVLUN" = "$LUN" ] ; then
731 local DEV="sd$(smalltr $DEVCOUNT)${PARTNUM}"
737 echo 1>&2 "$PRG: $1: Unable to translate this device, try again without devfs."
741 echo 1>&2 "$PRG: Unknown bus $TYPE"
745 ## we should never get here
749 ## make sure that find, head and tail can be found. otherwise the
750 ## script will silently give bogus paths. these are the only /usr/*
751 ## utilities this script depends on.
754 if command -v find > /dev/null 2>&1 ; then
755 [ -x `command -v find` ] || FAIL=1 ; else FAIL=1 ; fi
756 if command -v head > /dev/null 2>&1 ; then
757 [ -x `command -v head` ] || FAIL=1 ; else FAIL=1 ; fi
758 if command -v tail > /dev/null 2>&1 ; then
759 [ -x `command -v tail` ] || FAIL=1 ; else FAIL=1 ; fi
761 if [ "$FAIL" = 1 ] ; then
762 echo 1>&2 "$PRG: \`find', \`head', or \`tail' could not be found, aborting."
769 ## parse command line switches.
770 if [ $# != 0 ] ; then
786 echo 1>&2 "$PRG: unrecognized option \`$1'"
787 echo 1>&2 "$PRG: Try \`$PRG --help' for more information."
791 echo 1>&2 "$PRG: You must specify a filename"
792 echo 1>&2 "Try \`$PRG --help' for more information."
802 echo 1>&2 "$PRG: You must specify a /dev device"
803 echo 1>&2 "Try \`$PRG --help' for more information."
807 ## check that FILE is a block device and exists.
808 if [ ! -e "$device" ] ; then
809 echo 1>&2 "$PRG: $device: No such file or directory"
811 elif [ ! -b "$device" ] ; then
812 echo 1>&2 "$PRG: $device is not a block device"
816 ## check that we are running on a GNU/Linux system, OSX/BSD does not
817 ## have the same /proc stuff
818 if [ `uname -s` != Linux ] ; then
819 echo 1>&2 "$PRG: This utility will only work with GNU/Linux"
823 ## check for ppc, i think uname -m is safe for this...
824 if [ `uname -m` != ppc ] ; then
825 echo 1>&2 "$PRG: This utility will only work on PowerPC hardware"
829 ## ofpath cannot live without procfs
830 if [ ! -f /proc/uptime ] ; then
831 echo 1>&2 "$PRG: This utility requires the /proc filesystem"
835 ## check for retarded devfs names and tell them to foad.
836 if ckdevfs "$device" ; then
837 device="$(fixdevfs $device)" || exit 1
840 ## check for newworld mac. use cat hack due to /proc wierdness.
841 if [ "$(v=`cat /proc/cpuinfo 2>/dev/null | grep pmac-generation` ; echo ${v##*:[ ]})" = NewWorld ] ; then
843 elif [ "$(v=`cat /proc/cpuinfo 2>/dev/null | grep pmac-generation` ; echo ${v##*:[ ]})" = OldWorld ] ; then
845 elif (cat /proc/cpuinfo 2>/dev/null | grep ^motherboard | grep -q AAPL) ; then
847 elif (cat /proc/cpuinfo 2> /dev/null | grep ^machine | grep -q 'CHRP IBM') ; then
850 echo 1>&2 "$PRG: This machine is not yet supported"
854 ## make sure /proc/device-tree exists
855 if [ ! -d /proc/device-tree ] ; then
856 echo 1>&2 "$PRG: /proc/device-tree does not exist"
857 echo 1>&2 "$PRG: Make sure you compiled your kernel with CONFIG_PROC_DEVICETREE=y"
861 ## make sure we have what we need.
864 ## get the base device node and scrap /dev/ ie /dev/hda2 -> hda
865 DEVICE="${device##*/}"
866 DEVNODE="${DEVICE%%[0-9]*}"
867 PARTITION="${DEVICE##*[a-z]}"
869 ## use appropriate search for right sub arch.