5 export BACKUP_FILE
=sysupgrade.tgz
# file extracted by preinit
7 [ -x /usr
/bin
/ldd
] || ldd
() { LD_TRACE_LOADED_OBJECTS
=1 $
*; }
8 libs
() { ldd $
* 2>/dev
/null |
sed -r 's/(.* => )?(.*) .*/\2/'; }
10 install_file
() { # <file> [ <file> ... ]
13 if [ -L "$file" ]; then
14 target
="$(readlink -f "$file")"
15 dest
="$RAM_ROOT/$file"
17 dir
="$(dirname "$dest")"
19 ln -s "$target" "$dest"
23 dest
="$RAM_ROOT/$file"
24 [ -f "$file" -a ! -f "$dest" ] && {
25 dir
="$(dirname "$dest")"
36 [ -x "$src" ] && files
="$src $(libs $src)"
48 local default
="$1"; shift;
49 local answer
="$default"
51 [ "$INTERACTIVE" -eq 1 ] && {
53 0) echo -n "$* (y/N): ";;
54 *) echo -n "$* (Y/n): ";;
60 *) answer
="$default";;
67 [ "$VERBOSE" -ge 1 ] && echo "$@"
78 /bin
/mount |
awk '($3 ~ /^\/$/) && ($5 !~ /rootfs/) { print $5 }'
81 get_image
() { # <source> [ <command> ]
85 if [ -z "$cmd" ]; then
86 local magic
="$(dd if="$from" bs=2 count=1 2>/dev/null | hexdump -n 2 -e '1/1 "%02x
"')"
94 cat "$from" 2>/dev
/null |
$cmd
98 (get_image
"$@" |
dd bs
=2 count
=1 |
hexdump -v -n 2 -e '1/1 "%02x"') 2>/dev
/null
102 (get_image
"$@" |
dd bs
=4 count
=1 |
hexdump -v -n 4 -e '1/1 "%02x"') 2>/dev
/null
105 export_bootdevice
() {
106 local cmdline bootdisk rootpart uuid blockdev uevent line class
107 local MAJOR MINOR DEVNAME DEVTYPE
109 if read cmdline
< /proc
/cmdline
; then
112 bootdisk
="${cmdline##*block2mtd=}"
113 bootdisk
="${bootdisk%%,*}"
116 rootpart
="${cmdline##*root=}"
117 rootpart
="${rootpart%% *}"
123 uevent
="/sys/class/block/${bootdisk##*/}/uevent"
128 PARTUUID
=[a-f0-9
][a-f0-9
][a-f0-9
][a-f0-9
][a-f0-9
][a-f0-9
][a-f0-9
][a-f0-9
]-[a-f0-9
][a-f0-9
])
129 uuid
="${rootpart#PARTUUID=}"
130 uuid
="${uuid%-[a-f0-9][a-f0-9]}"
131 for blockdev
in $
(find /dev
-type b
); do
132 set -- $
(dd if=$blockdev bs
=1 skip
=440 count
=4 2>/dev
/null |
hexdump -v -e '4/1 "%02x "')
133 if [ "$4$3$2$1" = "$uuid" ]; then
134 uevent
="/sys/class/block/${blockdev##*/}/uevent"
140 uevent
="/sys/class/block/${rootpart##*/}/../uevent"
142 0x
[a-f0-9
][a-f0-9
][a-f0-9
] |
0x
[a-f0-9
][a-f0-9
][a-f0-9
][a-f0-9
] | \
143 [a-f0-9
][a-f0-9
][a-f0-9
] |
[a-f0-9
][a-f0-9
][a-f0-9
][a-f0-9
])
144 rootpart
=0x
${rootpart#0x}
145 for class
in /sys
/class
/block
/*; do
148 done < "$class/uevent"
149 if [ $
((rootpart
/256)) = $MAJOR -a $
((rootpart
%256)) = $MINOR ]; then
150 uevent
="$class/../uevent"
156 if [ -e "$uevent" ]; then
160 export BOOTDEV_MAJOR
=$MAJOR
161 export BOOTDEV_MINOR
=$MINOR
169 export_partdevice
() {
170 local var
="$1" offset
="$2"
171 local uevent line MAJOR MINOR DEVNAME DEVTYPE
173 for uevent
in /sys
/class
/block
/*/uevent
; do
177 if [ $BOOTDEV_MAJOR = $MAJOR -a $
(($BOOTDEV_MINOR + $offset)) = $MINOR -a -b "/dev/$DEVNAME" ]; then
178 export "$var=$DEVNAME"
187 [ "$(echo 01 | hexdump -v -n 2 -e '/2 "%x
"')" = "3031" ] && {
188 echo "${1:0:2}${1:8:2}${1:6:2}${1:4:2}${1:2:2}"
194 get_partitions
() { # <device> <filename>
198 if [ -b "$disk" -o -f "$disk" ]; then
199 v
"Reading partition table from $filename..."
201 local magic
=$
(dd if="$disk" bs
=2 count
=1 skip
=255 2>/dev
/null
)
202 if [ "$magic" != $
'\x55\xAA' ]; then
203 v
"Invalid partition table on $disk"
207 rm -f "/tmp/partmap.$filename"
210 for part
in 1 2 3 4; do
211 set -- $
(hexdump -v -n 12 -s "$((0x1B2 + $part * 16))" -e '3/4 "0x%08X "' "$disk")
213 local type="$(( $(hex_le32_to_cpu $1) % 256))"
214 local lba
="$(( $(hex_le32_to_cpu $2) ))"
215 local num
="$(( $(hex_le32_to_cpu $3) ))"
217 [ $type -gt 0 ] ||
continue
219 printf "%2d %5d %7d\n" $part $lba $num >> "/tmp/partmap.$filename"
229 # Flash firmware to MTD partition
231 # $(1): path to image
232 # $(2): (optional) pipe command to extract firmware, e.g. dd bs=n skip=m
233 default_do_upgrade
() {
235 if [ -n "$UPGRADE_BACKUP" ]; then
236 get_image
"$1" "$2" | mtd
$MTD_ARGS $MTD_CONFIG_ARGS -j "$UPGRADE_BACKUP" write - "${PART_NAME:-image}"
238 get_image
"$1" "$2" | mtd
$MTD_ARGS write - "${PART_NAME:-image}"
240 [ $?
-ne 0 ] && exit 1