#!/bin/sh
# Copyright (C) 2014 OpenWrt.org
#
. /lib/functions.sh
# 'ubi' partition on NAND contains UBI
CI_UBIPART="ubi"
nand_find_volume() {
local ubidevdir ubivoldir
ubidevdir="/sys/devices/virtual/ubi/$1"
[ ! -d "$ubidevdir" ] && return 1
for ubivoldir in $ubidevdir/${1}_*; do
[ ! -d "$ubivoldir" ] && continue
if [ "$( cat $ubivoldir/name )" = "$2" ]; then
basename $ubivoldir
return 0
fi
done
}
nand_find_ubi() {
local ubidevdir ubidev mtdnum
mtdnum="$( find_mtd_index $1 )"
[ ! "$mtdnum" ] && return 1
for ubidevdir in /sys/devices/virtual/ubi/ubi*; do
[ ! -d "$ubidevdir" ] && continue
cmtdnum="$( cat $ubidevdir/mtd_num )"
[ ! "$mtdnum" ] && continue
if [ "$mtdnum" = "$cmtdnum" ]; then
ubidev=$( basename $ubidevdir )
echo $ubidev
return 0
fi
done
}
get_magic_long() {
dd if="$1" skip=$2 bs=4 count=1 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"'
}
get_magic_long_tar() {
( tar xf $1 $2 -O | dd bs=4 count=1 | hexdump -v -n 4 -e '1/1 "%02x"') 2> /dev/null
}
identify_magic() {
local magic=$1
case "$magic" in
"55424923")
echo "ubi"
;;
"31181006")
echo "ubifs"
;;
"68737173")
echo "squashfs"
;;
"d00dfeed")
echo "fit"
;;
"4349"*)
echo "combined"
;;
*)
echo "unknown $magic"
;;
esac
}
identify() {
identify_magic $(get_magic_long "$1" "${2:-0}")
}
identify_tar() {
identify_magic $(get_magic_long_tar "$1" "$2")
}
nand_restore_config() {
sync
local ubidev=$( nand_find_ubi $CI_UBIPART )
local ubivol="$( nand_find_volume $ubidev rootfs_data )"
[ ! "$ubivol" ] &&
ubivol="$( nand_find_volume $ubidev rootfs )"
mkdir /tmp/new_root
if ! mount -t ubifs /dev/$ubivol /tmp/new_root; then
echo "mounting ubifs $ubivol failed"
rmdir /tmp/new_root
return 1
fi
mv "$1" "/tmp/new_root/sysupgrade.tgz"
umount /tmp/new_root
sync
rmdir /tmp/new_root
}
nand_upgrade_prepare_ubi() {
local rootfs_length="$1"
local rootfs_type="$2"
local has_kernel="${3:-0}"
local has_env="${4:-0}"
local mtdnum="$( find_mtd_index "$CI_UBIPART" )"
if [ ! "$mtdnum" ]; then
echo "cannot find ubi mtd partition $CI_UBIPART"
return 1
fi
local ubidev="$( nand_find_ubi "$CI_UBIPART" )"
if [ ! "$ubidev" ]; then
ubiattach -m "$mtdnum"
sync
ubidev="$( nand_find_ubi "$CI_UBIPART" )"
fi
if [ ! "$ubidev" ]; then
ubiformat /dev/mtd$mtdnum -y
ubiattach -m "$mtdnum"
sync
ubidev="$( nand_find_ubi "$CI_UBIPART" )"
[ -z "$has_env" ] || {
ubimkvol /dev/$ubidev -n 0 -N ubootenv -s 1MiB
ubimkvol /dev/$ubidev -n 1 -N ubootenv2 -s 1MiB
}
fi
local kern_ubivol="$( nand_find_volume $ubidev kernel )"
local root_ubivol="$( nand_find_volume $ubidev rootfs )"
local data_ubivol="$( nand_find_volume $ubidev rootfs_data )"
# remove ubiblock device of rootfs
local root_ubiblk="ubiblock${root_ubivol:3}"
if [ "$root_ubivol" -a -e "/dev/$root_ubiblk" ]; then
echo "removing $root_ubiblk"
if ! ubiblock -r /dev/$root_ubivol; then
echo "cannot remove $root_ubiblk"
return 1;
fi
fi
# kill volumes
[ "$kern_ubivol" ] && ubirmvol /dev/$ubidev -N kernel || true
[ "$root_ubivol" ] && ubirmvol /dev/$ubidev -N rootfs || true
[ "$data_ubivol" ] && ubirmvol /dev/$ubidev -N rootfs_data || true
# update kernel
if [ "$has_kernel" = "1" ]; then
if ! ubimkvol /dev/$ubidev -N kernel -s $kernel_length; then
echo "cannot create kernel volume"
return 1;
fi
fi
# update rootfs
local root_size_param
if [ "$rootfs_type" = "ubifs" ]; then
root_size_param="-m"
else
root_size_param="-s $rootfs_length"
fi
if ! ubimkvol /dev/$ubidev -N rootfs $root_size_param; then
echo "cannot create rootfs volume"
return 1;
fi
# create rootfs_data for non-ubifs rootfs
if [ "$rootfs_type" != "ubifs" ]; then
if ! ubimkvol /dev/$ubidev -N rootfs_data -m; then
echo "cannot initialize rootfs_data volume"
return 1
fi
fi
sync
return 0
}
nand_do_upgrade_success() {
local conf_tar="/tmp/sysupgrade.tgz"
sync
[ -f "$conf_tar" ] && nand_restore_config "$conf_tar"
echo "sysupgrade successfull"
reboot -f
}
nand_upgrade_ubinized() {
local ubi_file="$1"
local mtdnum="$(find_mtd_index "$CI_UBIPART")"
[ ! "$mtdnum" ] && {
CI_UBIPART="rootfs"
mtdnum="$(find_mtd_index "$CI_UBIPART")"
}
if [ ! "$mtdnum" ]; then
echo "cannot find mtd device $CI_UBIPART"
reboot -f
fi
local mtddev="/dev/mtd${mtdnum}"
ubidetach -p "${mtddev}" || true
sync
ubiformat "${mtddev}" -y -f "${ubi_file}"
ubiattach -p "${mtddev}"
nand_do_upgrade_success
}
nand_upgrade_ubifs() {
local rootfs_length=`(cat $1 | wc -c) 2> /dev/null`
nand_upgrade_prepare_ubi "$rootfs_length" "ubifs" "0" "0"
local ubidev="$( nand_find_ubi "$CI_UBIPART" )"
local root_ubivol="$(nand_find_volume $ubidev rootfs)"
ubiupdatevol /dev/$root_ubivol -s $rootfs_length $1
nand_do_upgrade_success
}
nand_upgrade_tar() {
local tar_file="$1"
local board_name="$(cat /tmp/sysinfo/board_name)"
local kernel_mtd="$(find_mtd_index kernel)"
local kernel_length=`(tar xf $tar_file sysupgrade-$board_name/kernel -O | wc -c) 2> /dev/null`
local rootfs_length=`(tar xf $tar_file sysupgrade-$board_name/root -O | wc -c) 2> /dev/null`
local rootfs_type="$(identify_tar "$tar_file" root)"
local has_kernel=1
local has_env=0
[ "kernel_length" = 0 -o -z "$kernel_mtd" ] || {
tar xf $tar_file sysupgrade-$board_name/kernel -O | mtd write - kernel
}
[ "kernel_length" = 0 -o ! -z "$kernel_mtd" ] && has_kernel=0
nand_upgrade_prepare_ubi "$rootfs_length" "$rootfs_type" "$has_kernel" "$has_env"
local ubidev="$( nand_find_ubi "$CI_UBIPART" )"
[ "$has_kernel" = "1" ] && {
local kern_ubivol="$(nand_find_volume $ubidev kernel)"
tar xf $tar_file sysupgrade-$board_name/kernel -O | \
ubiupdatevol /dev/$kern_ubivol -s $kernel_length -
}
local root_ubivol="$(nand_find_volume $ubidev rootfs)"
tar xf $tar_file sysupgrade-$board_name/root -O | \
ubiupdatevol /dev/$root_ubivol -s $rootfs_length -
nand_do_upgrade_success
}
nand_do_upgrade_stage2() {
local file_type=$(identify $1)
[ ! "$(find_mtd_index "$CI_UBIPART")" ] && CI_UBIPART="rootfs"
[ "$file_type" == "ubi" ] && nand_upgrade_ubinized $1
[ "$file_type" == "ubifs" ] && nand_upgrade_ubifs $1
nand_upgrade_tar $1
}
nand_upgrade_stage2() {
[ $1 = "nand" ] && {
[ -f "$2" ] && {
touch /tmp/sysupgrade
killall -9 telnetd
killall -9 dropbear
killall -9 ash
kill_remaining TERM
sleep 3
kill_remaining KILL
sleep 1
if [ -n "$(rootfs_type)" ]; then
v "Switching to ramdisk..."
run_ramfs ". /lib/functions.sh; include /lib/upgrade; nand_do_upgrade_stage2 $2"
else
nand_do_upgrade_stage2 $2
fi
return 0
}
echo "Nand upgrade failed"
exit 1
}
}
nand_upgrade_stage1() {
[ -f /tmp/sysupgrade-nand-path ] && {
path="$(cat /tmp/sysupgrade-nand-path)"
[ "$SAVE_CONFIG" != 1 -a -f "$CONF_TAR" ] &&
rm $CONF_TAR
ubus call system nandupgrade "{\"path\": \"$path\" }"
exit 0
}
}
append sysupgrade_pre_upgrade nand_upgrade_stage1
nand_do_platform_check() {
local board_name="$1"
local tar_file="$2"
local control_length=`(tar xf $tar_file sysupgrade-$board_name/CONTROL -O | wc -c) 2> /dev/null`
local file_type="$(identify $2)"
[ "$control_length" = 0 -a "$file_type" != "ubi" -a "$file_type" != "ubifs" ] && {
echo "Invalid sysupgrade file."
return 1
}
echo -n $2 > /tmp/sysupgrade-nand-path
cp /sbin/upgraded /tmp/
return 0
}
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