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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=$(cat /sys/class/ubi/ubi0/mtd_num)
case "$(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_is_factory_image() {
local board=$(board_name)
board=${board##*,}
# check matching footer signature
tail -c 256 $1 | grep -q -i "\.LINKSYS\.........${board}"
}
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
if nand_upgrade_tar "$1" ; then
nand_do_upgrade_success
else
nand_do_upgrade_failed
fi
}
[ "$magic_long" = "27051956" ] && {
echo "writing \"$1\" image to \"$part_label\""
get_image "$1" | mtd write - "$part_label"
}
[ "$magic_long" = "d00dfeed" ] && {
if ! linksys_is_factory_image "$1"; then
echo "factory image doesn't match device"
return 1
fi
echo "writing \"$1\" factory image to \"$part_label\""
get_image "$1" | mtd -e "$part_label" write - "$part_label"
}
}
linksys_get_cmdline_rootfs_device() {
if read cmdline < /proc/cmdline; then
case "$cmdline" in
*root=*)
local str="${cmdline##*root=}"
echo "${str%% *}"
return
;;
esac
fi
return 1
}
linksys_get_current_boot_part_emmc() {
local boot_part="$(fw_printenv -n boot_part)"
if [ "$boot_part" = 1 ] || [ "$boot_part" = 2 ]; then
v "Current boot_part=$boot_part selected from bootloader environment"
else
local rootfs_device="$(linksys_get_cmdline_rootfs_device)"
if [ "$rootfs_device" = "$(find_mmc_part "rootfs")" ]; then
boot_part=1
elif [ "$rootfs_device" = "$(find_mmc_part "alt_rootfs")" ]; then
boot_part=2
else
v "Could not determine current boot_part"
return 1
fi
v "Current boot_part=$boot_part selected from cmdline rootfs=$rootfs_device"
fi
echo $boot_part
}
linksys_set_target_partitions_emmc() {
local current_boot_part="$1"
if [ "$current_boot_part" = 1 ]; then
CI_KERNPART="alt_kernel"
CI_ROOTPART="alt_rootfs"
fw_setenv -s - <<-EOF
boot_part 2
auto_recovery yes
EOF
elif [ "$current_boot_part" = 2 ]; then
CI_KERNPART="kernel"
CI_ROOTPART="rootfs"
fw_setenv -s - <<-EOF
boot_part 1
auto_recovery yes
EOF
else
v "Could not set target eMMC partitions"
return 1
fi
v "Target eMMC partitions: $CI_KERNPART, $CI_ROOTPART"
}
platform_do_upgrade_linksys_emmc() {
local file="$1"
mkdir -p /var/lock
local current_boot_part="$(linksys_get_current_boot_part_emmc)"
linksys_set_target_partitions_emmc "$current_boot_part" || exit 1
touch /var/lock/fw_printenv.lock
emmc_do_upgrade "$file"
}
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