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mediatek: mt7622: improve sysupgrade on MMC

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Use generic functions to acquire rootdev.
Make sure to wipe rootfs_data in case of '-n'.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This commit is contained in:
Daniel Golle 2021-03-31 14:19:16 +01:00
parent bb107ad9c1
commit 7043e4334f
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GPG Key ID: 5A8F39C31C3217CA
1 changed files with 12 additions and 49 deletions
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61
target/linux/mediatek/mt7622/base-files/lib/upgrade/platform.sh
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@ -2,59 +2,24 @@ REQUIRE_IMAGE_METADATA=1
RAMFS_COPY_BIN='fw_printenv fw_setenv blockdev'
RAMFS_COPY_DATA='/etc/fw_env.config /var/lock/fw_printenv.lock'
get_cmdline_var() {
local var=$1
local cmdlinevar tmp
local cmdline="$(cat /proc/cmdline)"
for cmdlinevar in $cmdline; do
tmp=${cmdlinevar##${var}}
[ "=" = "${tmp:0:1}" ] && echo ${tmp:1}
done
}
get_rootdev() {
local rootvol rootdev
rootvol=$(get_cmdline_var root)
rootvol=$(basename $rootvol)
[ -e /sys/class/block/$rootvol ] || {
rootvol=${rootvol%%[0-9]}
[ -e /sys/class/block/$rootvol ] && echo $rootvol
rootvol=${rootvol%%p}
[ -e /sys/class/block/$rootvol ] && echo $rootvol
return
}
[ -e /sys/class/block/$rootvol/partition ] || {
echo $rootvol
return
}
rootdev=$(busybox readlink -f /sys/class/block/$rootvol)
rootdev=$(basename ${rootdev%%/${rootvol}})
[ -e /sys/class/block/$rootdev ] && echo $rootdev
}
get_partition() {
for partname in /sys/class/block/$1/*/name; do
[ "$(cat ${partname})" = "$2" ] && {
basename ${partname%%/name}
break
}
done
}
platform_do_upgrade() {
local board=$(board_name)
local file_type=$(identify $1)
case "$board" in
bananapi,bpi-r64)
local rootdev=$(get_rootdev)
local fitpart=$(get_partition $rootdev production)
[ "$fitpart" ] || exit 1
export_bootdevice
export_partdevice rootdev 0
local fitpart=$(get_partition_by_name $rootdev "production")
[ "$fitpart" ] || return 1
dd if=/dev/zero of=/dev/$fitpart bs=4096 count=1 2>/dev/null
blockdev --rereadpt /dev/$rootdev
get_image "$1" | dd of=/dev/$fitpart
echo $rootdev > /tmp/sysupgrade.rootdev
blockdev --rereadpt /dev/$rootdev
local datapart=$(get_partition_by_name $rootdev "rootfs_data")
[ "$datapart" ] || return 0
dd if=/dev/zero of=/dev/$datapart bs=4096 count=1 2>/dev/null
echo $datapart > /tmp/sysupgrade.datapart
;;
buffalo,wsr-2533dhp2)
local magic="$(get_magic_long "$1")"
@ -113,11 +78,9 @@ platform_check_image() {
platform_copy_config_mmc() {
[ -e "$UPGRADE_BACKUP" ] || return
local rootdev=$(cat /tmp/sysupgrade.rootdev)
blockdev --rereadpt /dev/$rootdev
local datadev=$(get_partition $rootdev rootfs_data)
[ "$datadev" ] || echo "no rootfs_data partition, cannot keep configuration." >&2
dd if="$UPGRADE_BACKUP" of=/dev/$datadev
local datapart=$(cat /tmp/sysupgrade.datapart)
[ "$datapart" ] || echo "no rootfs_data partition, cannot keep configuration." >&2
dd if="$UPGRADE_BACKUP" of=/dev/$datapart
sync
}