target/linux/mediatek/mt7623/base-files/lib/upgrade/platform.sh

   1
   2 REQUIRE_IMAGE_METADATA=1
   3 RAMFS_COPY_BIN='blockdev'
   4
   5 # Full system upgrade including preloader for MediaTek SoCs on eMMC or SD
   6 mtk_mmc_full_upgrade() {
   7         local diskdev partdev diff oldrecovery
   8
   9         if grep -q root=/dev/mmcblk0p2 /proc/cmdline; then
  10             oldrecovery=1
  11         else
  12             oldrecovery=2
  13         fi
  14
  15         export_bootdevice && export_partdevice diskdev 0 || {
  16                 echo "Unable to determine upgrade device"
  17                 return 1
  18         }
  19
  20         #Keep the persistent random mac address (if it exists)
  21         mkdir -p /tmp/recovery
  22         export_partdevice recoverydev $oldrecovery
  23         if mount -o rw,noatime "/dev/$recoverydev" -tvfat /tmp/recovery; then
  24                 [ -f "/tmp/recovery/mac_addr" ] && cp /tmp/recovery/mac_addr /tmp/
  25                 umount /tmp/recovery
  26         fi
  27         sync
  28
  29         if [ "$SAVE_PARTITIONS" = "1" ]; then
  30                 get_partitions "/dev/$diskdev" bootdisk
  31
  32                 #extract the boot sector from the image
  33                 get_image "$@" | dd of=/tmp/image.bs count=1 bs=512b
  34
  35                 get_partitions /tmp/image.bs image
  36
  37                 #compare tables
  38                 diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
  39         else
  40                 diff=1
  41         fi
  42
  43         if [ -n "$diff" ]; then
  44                 get_image "$@" | dd of="/dev/$diskdev" bs=4096 conv=fsync
  45
  46                 # Separate removal and addition is necessary; otherwise, partition 1
  47                 # will be missing if it overlaps with the old partition 2
  48                 partx -d - "/dev/$diskdev"
  49                 partx -a - "/dev/$diskdev"
  50         else
  51                 # iterate over each partition from the image and write it to the boot disk
  52                 while read part start size; do
  53                         part="$(($part - 2))"
  54                         if export_partdevice partdev $part; then
  55                                 echo "Writing image to /dev/$partdev..."
  56                                 get_image "$@" | dd of="/dev/$partdev" ibs="512" obs=1M skip="$start" count="$size" conv=fsync
  57                         else
  58                             echo "Unable to find partition $part device, skipped."
  59                         fi
  60                 done < /tmp/partmap.image
  61
  62                 #copy partition uuid
  63                 echo "Writing new UUID to /dev/$diskdev..."
  64                 get_image "$@" | dd of="/dev/$diskdev" bs=1 skip=440 count=4 seek=440 conv=fsync
  65         fi
  66
  67         export_partdevice recoverydev 2
  68         if mount -o rw,noatime "/dev/$recoverydev" -t vfat /tmp/recovery; then
  69                 [ -f "/tmp/mac_addr" ] && cp /tmp/mac_addr /tmp/recovery
  70
  71                 if [ "$diskdev" = "mmcblk0" -a -r /tmp/recovery/eMMCboot.bin ]; then
  72                         echo 0 > /sys/block/mmcblk0boot0/force_ro
  73                         dd if=/tmp/recovery/eMMCboot.bin of=/dev/mmcblk0boot0 conv=fsync
  74                         sync
  75                         echo 1 > /sys/block/mmcblk0boot0/force_ro
  76                 fi
  77                 sync
  78                 umount /tmp/recovery
  79         fi
  80 }
  81
  82 platform_do_upgrade() {
  83         local board=$(board_name)
  84
  85         case "$board" in
  86         bananapi,bpi-r2)
  87                 export_bootdevice
  88                 export_partdevice rootdev 0
  89                 blockdev --rereadpt /dev/$rootdev || return 1
  90                 export_partdevice fitpart 3
  91                 [ "$fitpart" ] || return 1
  92                 dd if=/dev/zero of=$fitpart bs=4096 count=1 2>/dev/null
  93                 blockdev --rereadpt /dev/$rootdev
  94                 get_image "$1" | dd of=$fitpart
  95                 blockdev --rereadpt /dev/$rootdev
  96                 local datapart=$(find_mmc_part "rootfs_data" $rootdev)
  97                 [ "$datapart" ] || return 0
  98                 dd if=/dev/zero of=$datapart bs=4096 count=1 2>/dev/null
  99                 echo $datapart > /tmp/sysupgrade.datapart
 100                 ;;
 101
 102         unielec,u7623-02-emmc-512m)
 103                 local magic="$(get_magic_long "$1")"
 104                 if [ "$magic" = "53444d4d" ]; then
 105                         mtk_mmc_full_upgrade "$1"
 106                 else # Old partial image starting with uImage
 107                         # Keep the persistent random mac address (if it exists)
 108                         recoverydev=mmcblk0p1
 109                         mkdir -p /tmp/recovery
 110                         mount -o rw,noatime /dev/$recoverydev /tmp/recovery
 111                         [ -f "/tmp/recovery/mac_addr" ] && \
 112                                 mv -f /tmp/recovery/mac_addr /tmp/
 113                         umount /tmp/recovery
 114
 115                         # 1310720 is the offset in bytes from the start of eMMC and to
 116                         # the location of the kernel (2560 512 byte sectors)
 117                         get_image "$1" | dd of=/dev/mmcblk0 bs=1310720 seek=1 conv=fsync
 118
 119                         mount -o rw,noatime /dev/$recoverydev /tmp/recovery
 120                         [ -f "/tmp/mac_addr" ] && mv -f /tmp/mac_addr /tmp/recovery
 121                         sync
 122                         umount /tmp/recovery
 123                 fi
 124                 ;;
 125         *)
 126                 default_do_upgrade "$1"
 127                 ;;
 128         esac
 129 }
 130
 131 PART_NAME=firmware
 132
 133 platform_check_image() {
 134         local board=$(board_name)
 135         local magic="$(get_magic_long "$1")"
 136         local diskdev partdev diff
 137
 138         [ "$#" -gt 1 ] && return 1
 139
 140         case "$board" in
 141         bananapi,bpi-r2)
 142                 [ "$magic" != "d00dfeed" ] && {
 143                         echo "Invalid image type."
 144                         return 1
 145                 }
 146                 ;;
 147         unielec,u7623-02-emmc-512m)
 148                 # Can always upgrade to the new-style full image
 149                 [ "$magic" = "53444d4d" ] && return 0
 150
 151                 # Legacy uImage directly at 0xA00 on the eMMC.
 152                 [ "$magic" != "27051956" ] && {
 153                         echo "Invalid image type."
 154                         return 1
 155                 }
 156                 rootpart=$(cat /proc/cmdline)
 157                 rootpart="${rootpart##*root=}"
 158                 rootpart="${rootpart%% *}"
 159                 [ "$rootpart" != "/dev/mmcblk0p2" ] && {
 160                         echo "Cannot downgrade to legacy image."
 161                         return 1
 162                 }
 163                 return 0
 164                 ;;
 165         *)
 166                 echo "Sysupgrade is not supported on your board yet."
 167                 return 1
 168                 ;;
 169         esac
 170
 171         return 0
 172 }
 173
 174 platform_copy_config_mmc() {
 175         [ -e "$UPGRADE_BACKUP" ] || return
 176         local datapart=$(cat /tmp/sysupgrade.datapart)
 177         [ "$datapart" ] || echo "no rootfs_data partition, cannot keep configuration." >&2
 178         dd if="$UPGRADE_BACKUP" of=$datapart
 179         sync
 180 }
 181
 182 platform_copy_config() {
 183         case "$(board_name)" in
 184         bananapi,bpi-r2)
 185                 platform_copy_config_mmc
 186                 ;;
 187         unielec,u7623-02-emmc-512m)
 188                 # platform_do_upgrade() will have set $recoverydev
 189                 if [ -n "$recoverydev" ]; then
 190                         mkdir -p /tmp/recovery
 191                         mount -o rw,noatime "/dev/$recoverydev" -t vfat /tmp/recovery
 192                         cp -af "$UPGRADE_BACKUP" "/tmp/recovery/$BACKUP_FILE"
 193                         sync
 194                         umount /tmp/recovery
 195                 fi
 196                 ;;
 197         esac
 198 }