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Diffstat (limited to 'package/system/procd/files/nand.sh')
| -rw-r--r-- | package/system/procd/files/nand.sh | 361 |
1 files changed, 361 insertions, 0 deletions
diff --git a/package/system/procd/files/nand.sh b/package/system/procd/files/nand.sh new file mode 100644 index 0000000..3b1c749 --- /dev/null +++ b/package/system/procd/files/nand.sh @@ -0,0 +1,361 @@ +#!/bin/sh +# Copyright (C) 2014 OpenWrt.org +# + +. /lib/functions.sh + +# 'kernel' partition on NAND contains the kernel +CI_KERNPART="kernel" + +# 'ubi' partition on NAND contains UBI +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" + 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 $CI_UBIPART" + reboot -f + fi + + local mtddev="/dev/mtd${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_upgrade_tar() { + local tar_file="$1" + local board_name="$(cat /tmp/sysinfo/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 $1) + + [ ! "$(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 $CONF_TAR + + ubus call system nandupgrade "{\"path\": \"$path\" }" + exit 0 + } +} +append sysupgrade_pre_upgrade nand_upgrade_stage1 + +# 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 + cp /sbin/upgraded /tmp/ + nand_upgrade_stage1 +} |