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|
udpu_check_emmc() {
# uDPU uses combined ext4 and f2fs partitions.
# partition layout:
# 1. boot (ext4)
# 2. recovery (ext4)
# 3. rootfs (f2fs)
# 4. misc (f2fs)
# Check which device is available, depending on the board revision
if [ -b "/dev/mmcblk1" ]; then
emmc_dev=/dev/mmcblk1
elif [ -b "/dev/mmcblk0" ]; then
emmc_dev=/dev/mmcblk0
else
echo "Cannot detect eMMC flash, aborting.."
exit 1
fi
}
udpu_part_prep() {
if [ "$(grep $1 /proc/mounts)" ]; then
mounted_part="$(grep $1 /proc/mounts | awk '{print $2}' | head -1)"
umount $mounted_part
[ "$(grep -wo $mounted_part /proc/mounts)" ] && umount -l $mounted_part
fi
}
udpu_do_part_check() {
local emmc_parts="1 2 3 4"
local part_valid="1"
# Check if the block devices exist
for num in ${emmc_parts}; do
[[ ! -b ${emmc_dev}p${num} ]] && part_valid="0"
done
# If partitions are missing create a new partition table
if [ "$part_valid" != "1" ]; then
printf "Invalid partition table, creating a new one\n"
printf "o\nn\np\n1\n\n+256M\nn\np\n2\n\n+256M\nn\np\n3\n\n+1536M\nn\np\n\n\nw\n" | fdisk -W always $emmc_dev > /dev/null 2>&1
# Format the /misc part right away as we will need it for the firmware
printf "Formating /misc partition, this make take a while..\n"
udpu_part_prep ${emmc_dev}p4
mkfs.f2fs -q -l misc ${emmc_dev}p4
[ $? -eq 0 ] && printf "/misc partition formated successfully\n" || printf "/misc partition formatting failed\n"
udpu_do_initial_setup
else
printf "Partition table looks ok\n"
fi
}
udpu_do_misc_prep() {
if [ ! "$(grep -wo /misc /proc/mounts)" ]; then
mkdir -p /misc
mount ${emmc_dev}p4 /misc
# If the mount fails, try to reformat partition
# Leaving possiblity for multiple iterations
if [ $? -ne 0 ]; then
printf "Error while mounting /misc, trying to reformat..\n"
format_count=0
while [ "$format_count" -lt "1" ]; do
udpu_part_prep ${emmc_dev}p4
mkfs.f2fs -q -l misc ${emmc_dev}p4
mount ${emmc_dev}p4 /misc
if [ $? -ne 0 ]; then
umount -l /misc
printf "Failed while mounting /misc\n"
format_count=$((format_count +1))
else
printf "Mounted /misc successfully\n"
break
fi
done
fi
fi
}
udpu_do_initial_setup() {
# Prepare /recovery parition
udpu_part_prep ${emmc_dev}p2
mkfs.ext4 -q ${emmc_dev}p2 | echo y &> /dev/null
# Prepare /boot partition
udpu_part_prep ${emmc_dev}p1
mkfs.ext4 -q ${emmc_dev}p1 | echo y &> /dev/null
# Prepare /root partition
printf "Formating /root partition, this may take a while..\n"
udpu_part_prep ${emmc_dev}p3
mkfs.f2fs -q -l rootfs ${emmc_dev}p3
[ $? -eq 0 ] && printf "/root partition reformated\n"
}
udpu_do_regular_upgrade() {
# Clean /boot partition - mfks.ext4 is not available in chroot
[ "$(grep -wo /boot /proc/mounts)" ] && umount /boot
mkdir -p /tmp/boot
mount ${emmc_dev}p1 /tmp/boot
rm -rf /tmp/boot/*
# Clean /root partition - mkfs.f2fs is not available in chroot
[ "$(grep -wo /dev/root /proc/mounts)" ] && umount /
mkdir -p /tmp/rootpart
mount ${emmc_dev}p3 /tmp/rootpart
rm -rf /tmp/rootpart/*
}
platform_do_upgrade_uDPU() {
udpu_check_emmc
# Prepare and extract firmware on /misc partition
udpu_do_misc_prep
[ -f "/misc/firmware" ] && rm -r /misc/firmware
mkdir -p /misc/firmware
tar xzf "$1" -C /misc/firmware/
udpu_do_regular_upgrade
printf "Updating /boot partition\n"
tar xzf /misc/firmware/boot.tgz -C /tmp/boot
[ $? -eq 0 ] && printf "/boot partition updated successfully\n" || printf "/boot partition update failed\n"
sync
printf "Updating /root partition\n"
tar xzf /misc/firmware/rootfs.tgz -C /tmp/rootpart
[ $? -eq 0 ] && printf "/root partition updated successfully\n" || printf "/root partition update failed\n"
sync
# Saving configuration files over sysupgrade
platform_copy_config_uDPU
# Remove tmp mounts
tmp_parts=$(grep "${emmc_dev}" /proc/mounts | awk '{print $2}')
for part in ${tmp_parts}; do
umount $part
# Force umount is necessary
[ "$(grep "${part}" /proc/mounts)" ] && umount -l $part
done
# Sysupgrade complains about /tmp and /dev, so we can detach them here
umount -l /tmp
umount -l /dev
}
platform_copy_config_uDPU() {
# Config is saved on the /misc partition and copied on the rootfs after the reboot
if [ -f "$CONF_TAR" ]; then
cp -f "$CONF_TAR" /misc
sync
fi
}
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