| linksys_get_target_firmware() { |
| local cur_boot_part mtd_ubi0 |
| |
| cur_boot_part="$(/usr/sbin/fw_printenv -n boot_part)" |
| if [ -z "${cur_boot_part}" ]; then |
| mtd_ubi0=$(cat /sys/devices/virtual/ubi/ubi0/mtd_num) |
| case "$(grep -E "^mtd${mtd_ubi0}:" /proc/mtd | cut -d '"' -f 2)" in |
| kernel|rootfs) |
| cur_boot_part=1 |
| ;; |
| alt_kernel|alt_rootfs) |
| cur_boot_part=2 |
| ;; |
| esac |
| >&2 printf "Current boot_part='%s' selected from ubi0/mtd_num='%s'" \ |
| "${cur_boot_part}" "${mtd_ubi0}" |
| fi |
| |
| # OEM U-Boot for EA6350v3, EA8300 and MR8300; bootcmd= |
| # if test $auto_recovery = no; |
| # then bootipq; |
| # elif test $boot_part = 1; |
| # then run bootpart1; |
| # else run bootpart2; |
| # fi |
| |
| case "$cur_boot_part" in |
| 1) |
| fw_setenv -s - <<-EOF |
| boot_part 2 |
| auto_recovery yes |
| EOF |
| printf "alt_kernel" |
| return |
| ;; |
| 2) |
| fw_setenv -s - <<-EOF |
| boot_part 1 |
| auto_recovery yes |
| EOF |
| printf "kernel" |
| return |
| ;; |
| *) |
| return |
| ;; |
| esac |
| } |
| |
| linksys_get_root_magic() { |
| (get_image "$@" | dd skip=786432 bs=4 count=1 | hexdump -v -n 4 -e '1/1 "%02x"') 2>/dev/null |
| } |
| |
| platform_do_upgrade_linksys() { |
| local magic_long="$(get_magic_long "$1")" |
| |
| local rm_oem_fw_vols="squashfs ubifs" # from OEM [alt_]rootfs UBI |
| local vol |
| |
| mkdir -p /var/lock |
| local part_label="$(linksys_get_target_firmware)" |
| touch /var/lock/fw_printenv.lock |
| |
| if [ -z "$part_label" ]; then |
| echo "cannot find target partition" |
| exit 1 |
| fi |
| |
| local target_mtd=$(find_mtd_part "$part_label") |
| |
| [ "$magic_long" = "73797375" ] && { |
| CI_KERNPART="$part_label" |
| if [ "$part_label" = "kernel" ]; then |
| CI_UBIPART="rootfs" |
| else |
| CI_UBIPART="alt_rootfs" |
| fi |
| |
| 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 |
| for vol in $rm_oem_fw_vols; do |
| ubirmvol "/dev/$ubidev" -N "$vol" 2>/dev/null |
| done |
| fi |
| |
| # complete std upgrade |
| nand_upgrade_tar "$1" |
| } |
| |
| [ "$magic_long" = "27051956" ] && { |
| # This magic is for a uImage (which is a sysupgrade image) |
| # check firmwares' rootfs types |
| local oldroot="$(linksys_get_root_magic "$target_mtd")" |
| local newroot="$(linksys_get_root_magic "$1")" |
| |
| if [ "$newroot" = "55424923" ] && [ "$oldroot" = "55424923" ]; then |
| # we're upgrading from a firmware with UBI to one with UBI |
| # erase everything to be safe |
| # - Is that really needed? Won't remove (or comment) the if, |
| # because it may be needed in a future device. |
| #mtd erase $part_label |
| #get_image "$1" | mtd -n write - $part_label |
| echo "writing \"$1\" UBI image to \"$part_label\" (UBI)..." |
| get_image "$1" | mtd write - "$part_label" |
| else |
| echo "writing \"$1\" image to \"$part_label\"" |
| get_image "$1" | mtd write - "$part_label" |
| fi |
| } |
| } |