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1440175f82
When OEM volumes are present in the [alt_]firmware partition,
sysupgrade will write a new kernel, but will fail to write
the root file system. The next boot will hang indefinitely
Waiting for root device /dev/ubiblock0_0...
Modified ipq40xx/base-files/lib/upgrade/linksys.sh
to remove both `squashfs` and `ubifs` if found
on the target firmware partition's UBI device.
Run-tested-on: Linksys EA8300
Signed-off-by: Jeff Kletsky <git-commits@allycomm.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
[applied some shellcheck suggestions as well]
123 lines
2.9 KiB
Bash
Executable File
123 lines
2.9 KiB
Bash
Executable File
linksys_get_target_firmware() {
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local cur_boot_part mtd_ubi0
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cur_boot_part="$(/usr/sbin/fw_printenv -n boot_part)"
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if [ -z "${cur_boot_part}" ]; then
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mtd_ubi0=$(cat /sys/devices/virtual/ubi/ubi0/mtd_num)
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case "$(grep -E "^mtd${mtd_ubi0}:" /proc/mtd | cut -d '"' -f 2)" in
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kernel|rootfs)
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cur_boot_part=1
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;;
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alt_kernel|alt_rootfs)
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cur_boot_part=2
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;;
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esac
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>&2 printf "Current boot_part='%s' selected from ubi0/mtd_num='%s'" \
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"${cur_boot_part}" "${mtd_ubi0}"
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fi
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# OEM U-Boot for EA6350v3 and EA8300; bootcmd=
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# if test $auto_recovery = no;
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# then bootipq;
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# elif test $boot_part = 1;
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# then run bootpart1;
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# else run bootpart2;
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# fi
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case "$cur_boot_part" in
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1)
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fw_setenv -s - <<-EOF
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boot_part 2
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auto_recovery yes
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EOF
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printf "alt_kernel"
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return
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;;
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2)
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fw_setenv -s - <<-EOF
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boot_part 1
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auto_recovery yes
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EOF
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printf "kernel"
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return
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;;
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*)
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return
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;;
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esac
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}
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linksys_get_root_magic() {
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(get_image "$@" | dd skip=786432 bs=4 count=1 | hexdump -v -n 4 -e '1/1 "%02x"') 2>/dev/null
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}
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platform_do_upgrade_linksys() {
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local magic_long="$(get_magic_long "$1")"
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local rm_oem_fw_vols="squashfs ubifs" # from OEM [alt_]rootfs UBI
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local vol
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mkdir -p /var/lock
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local part_label="$(linksys_get_target_firmware)"
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touch /var/lock/fw_printenv.lock
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if [ -z "$part_label" ]; then
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echo "cannot find target partition"
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exit 1
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fi
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local target_mtd=$(find_mtd_part "$part_label")
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[ "$magic_long" = "73797375" ] && {
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CI_KERNPART="$part_label"
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if [ "$part_label" = "kernel" ]; then
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CI_UBIPART="rootfs"
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else
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CI_UBIPART="alt_rootfs"
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fi
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local mtdnum="$(find_mtd_index "$CI_UBIPART")"
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if [ ! "$mtdnum" ]; then
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echo "cannot find ubi mtd partition $CI_UBIPART"
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return 1
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fi
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local ubidev="$(nand_find_ubi "$CI_UBIPART")"
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if [ ! "$ubidev" ]; then
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ubiattach -m "$mtdnum"
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sync
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ubidev="$(nand_find_ubi "$CI_UBIPART")"
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fi
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if [ "$ubidev" ]; then
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for vol in $rm_oem_fw_vols; do
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ubirmvol "/dev/$ubidev" -N "$vol" 2>/dev/null
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done
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fi
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# complete std upgrade
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nand_upgrade_tar "$1"
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}
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[ "$magic_long" = "27051956" ] && {
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# This magic is for a uImage (which is a sysupgrade image)
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# check firmwares' rootfs types
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local oldroot="$(linksys_get_root_magic "$target_mtd")"
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local newroot="$(linksys_get_root_magic "$1")"
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if [ "$newroot" = "55424923" ] && [ "$oldroot" = "55424923" ]; then
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# we're upgrading from a firmware with UBI to one with UBI
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# erase everything to be safe
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# - Is that really needed? Won't remove (or comment) the if,
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# because it may be needed in a future device.
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#mtd erase $part_label
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#get_image "$1" | mtd -n write - $part_label
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echo "writing \"$1\" UBI image to \"$part_label\" (UBI)..."
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get_image "$1" | mtd write - "$part_label"
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else
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echo "writing \"$1\" image to \"$part_label\""
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get_image "$1" | mtd write - "$part_label"
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fi
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}
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}
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