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-rw-r--r--package/base-files/files/lib/upgrade/nand.sh376
1 files changed, 376 insertions, 0 deletions
diff --git a/package/base-files/files/lib/upgrade/nand.sh b/package/base-files/files/lib/upgrade/nand.sh
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+#!/bin/sh
+# Copyright (C) 2014 OpenWrt.org
+#
+
+. /lib/functions.sh
+
+# 'kernel' partition on NAND contains the kernel
+CI_KERNPART="${CI_KERNPART:-kernel}"
+
+# 'ubi' partition on NAND contains UBI
+CI_UBIPART="${CI_UBIPART:-ubi}"
+
+ubi_mknod() {
+ local dir="$1"
+ local dev="/dev/$(basename $dir)"
+
+ [ -e "$dev" ] && return 0
+
+ local devid="$(cat $dir/dev)"
+ local major="${devid%%:*}"
+ local minor="${devid##*:}"
+ mknod "$dev" c $major $minor
+}
+
+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 $ubivoldir
+ ubi_mknod "$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 $ubidevdir )
+ ubi_mknod "$ubidevdir"
+ echo $ubidev
+ return 0
+ fi
+ done
+}
+
+nand_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 $(nand_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" )"
+ [ "$has_env" -gt 0 ] && {
+ ubimkvol /dev/$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 successful"
+ umount -a
+ reboot -f
+}
+
+# Flash the UBI image to MTD partition
+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 $CI_UBIPART"
+ umount -a
+ reboot -f
+ fi
+
+ local mtddev="/dev/mtd${mtdnum}"
+ ubidetach -p "${mtddev}" || true
+ sync
+ ubiformat "${mtddev}" -y -f "${ubi_file}"
+ ubiattach -p "${mtddev}"
+ nand_do_upgrade_success
+}
+
+# Write the UBIFS image to UBI volume
+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_board_name() {
+ if type 'platform_nand_board_name' >/dev/null 2>/dev/null; then
+ platform_nand_board_name
+ return
+ fi
+
+ cat /tmp/sysinfo/board_name
+}
+
+nand_upgrade_tar() {
+ local tar_file="$1"
+ local board_name="$(nand_board_name)"
+ local kernel_mtd="$(find_mtd_index $CI_KERNPART)"
+
+ 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" sysupgrade-$board_name/root)"
+
+ local has_kernel=1
+ local has_env=0
+
+ [ "$kernel_length" != 0 -a -n "$kernel_mtd" ] && {
+ tar xf $tar_file sysupgrade-$board_name/kernel -O | mtd write - $CI_KERNPART
+ }
+ [ "$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 $rootfs_length -
+
+ nand_do_upgrade_success
+}
+
+# Recognize type of passed file and start the upgrade process
+nand_do_upgrade_stage2() {
+ local file_type=$(identify $1)
+
+ if type 'platform_nand_pre_upgrade' >/dev/null 2>/dev/null; then
+ platform_nand_pre_upgrade "$1"
+ fi
+
+ [ ! "$(find_mtd_index "$CI_UBIPART")" ] && CI_UBIPART="rootfs"
+
+ case "$file_type" in
+ "ubi") nand_upgrade_ubinized $1;;
+ "ubifs") nand_upgrade_ubifs $1;;
+ *) nand_upgrade_tar $1;;
+ esac
+}
+
+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 $CONF_TAR
+
+ ubus call system nandupgrade "{\"prefix\": \"$RAM_ROOT\", \"path\": \"$path\" }"
+ exit 0
+ }
+}
+
+# Check if passed file is a valid one for NAND sysupgrade. Currently it accepts
+# 3 types of files:
+# 1) UBI - should contain an ubinized image, header is checked for the proper
+# MAGIC
+# 2) UBIFS - should contain UBIFS partition that will replace "rootfs" volume,
+# header is checked for the proper MAGIC
+# 3) TAR - archive has to include "sysupgrade-BOARD" directory with a non-empty
+# "CONTROL" file (at this point its content isn't verified)
+#
+# You usually want to call this function in platform_check_image.
+#
+# $(1): board name, used in case of passing TAR file
+# $(2): file to be checked
+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
+ }
+
+ return 0
+}
+
+# Start NAND upgrade process
+#
+# $(1): file to be used for upgrade
+nand_do_upgrade() {
+ echo -n $1 > /tmp/sysupgrade-nand-path
+ install_bin /sbin/upgraded
+ ln -s "$RAM_ROOT"/sbin/upgraded /tmp/upgraded
+ nand_upgrade_stage1
+}