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

   1 REQUIRE_IMAGE_METADATA=1
   2
   3 # Legacy full system upgrade including preloader for MediaTek SoCs on eMMC or SD
   4 legacy_mtk_mmc_full_upgrade() {
   5         local diskdev partdev diff oldrecovery
   6
   7         if grep -q root=/dev/mmcblk0p2 /proc/cmdline; then
   8             oldrecovery=1
   9         else
  10             oldrecovery=2
  11         fi
  12
  13         export_bootdevice && export_partdevice diskdev 0 || {
  14                 echo "Unable to determine upgrade device"
  15                 return 1
  16         }
  17
  18         #Keep the persistent random mac address (if it exists)
  19         mkdir -p /tmp/recovery
  20         export_partdevice recoverydev $oldrecovery
  21         if mount -o rw,noatime "/dev/$recoverydev" -tvfat /tmp/recovery; then
  22                 [ -f "/tmp/recovery/mac_addr" ] && cp /tmp/recovery/mac_addr /tmp/
  23                 umount /tmp/recovery
  24         fi
  25         sync
  26
  27         if [ "$UPGRADE_OPT_SAVE_PARTITIONS" = "1" ]; then
  28                 get_partitions "/dev/$diskdev" bootdisk
  29
  30                 #extract the boot sector from the image
  31                 get_image "$@" | dd of=/tmp/image.bs count=1 bs=512b
  32
  33                 get_partitions /tmp/image.bs image
  34
  35                 #compare tables
  36                 diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
  37         else
  38                 diff=1
  39         fi
  40
  41         if [ -n "$diff" ]; then
  42                 get_image "$@" | dd of="/dev/$diskdev" bs=4096 conv=fsync
  43
  44                 # Separate removal and addition is necessary; otherwise, partition 1
  45                 # will be missing if it overlaps with the old partition 2
  46                 partx -d - "/dev/$diskdev"
  47                 partx -a - "/dev/$diskdev"
  48         else
  49                 # iterate over each partition from the image and write it to the boot disk
  50                 while read part start size; do
  51                         part="$(($part - 2))"
  52                         if export_partdevice partdev $part; then
  53                                 echo "Writing image to /dev/$partdev..."
  54                                 get_image "$@" | dd of="/dev/$partdev" ibs="512" obs=1M skip="$start" count="$size" conv=fsync
  55                         else
  56                             echo "Unable to find partition $part device, skipped."
  57                         fi
  58                 done < /tmp/partmap.image
  59
  60                 #copy partition uuid
  61                 echo "Writing new UUID to /dev/$diskdev..."
  62                 get_image "$@" | dd of="/dev/$diskdev" bs=1 skip=440 count=4 seek=440 conv=fsync
  63         fi
  64
  65         export_partdevice recoverydev 2
  66         if mount -o rw,noatime "/dev/$recoverydev" -t vfat /tmp/recovery; then
  67                 [ -f "/tmp/mac_addr" ] && cp /tmp/mac_addr /tmp/recovery
  68
  69                 if [ "$diskdev" = "mmcblk0" -a -r /tmp/recovery/eMMCboot.bin ]; then
  70                         echo 0 > /sys/block/mmcblk0boot0/force_ro
  71                         dd if=/tmp/recovery/eMMCboot.bin of=/dev/mmcblk0boot0 conv=fsync
  72                         sync
  73                         echo 1 > /sys/block/mmcblk0boot0/force_ro
  74                 fi
  75                 sync
  76                 umount /tmp/recovery
  77         fi
  78 }
  79
  80 platform_do_upgrade() {
  81         local board=$(board_name)
  82
  83         case "$board" in
  84         bananapi,bpi-r2|\
  85         unielec,u7623-02)
  86                 export_bootdevice
  87                 export_partdevice fitpart 3
  88                 [ "$fitpart" ] || return 1
  89                 EMMC_KERN_DEV="/dev/$fitpart"
  90                 emmc_do_upgrade "$1"
  91                 ;;
  92         unielec,u7623-02-emmc-512m)
  93                 local magic="$(get_magic_long "$1")"
  94                 if [ "$magic" = "53444d4d" ]; then
  95                         legacy_mtk_mmc_full_upgrade "$1"
  96                 else # Old partial image starting with uImage
  97                         # Keep the persistent random mac address (if it exists)
  98                         recoverydev=mmcblk0p1
  99                         mkdir -p /tmp/recovery
 100                         mount -o rw,noatime /dev/$recoverydev /tmp/recovery
 101                         [ -f "/tmp/recovery/mac_addr" ] && \
 102                                 mv -f /tmp/recovery/mac_addr /tmp/
 103                         umount /tmp/recovery
 104
 105                         # 1310720 is the offset in bytes from the start of eMMC and to
 106                         # the location of the kernel (2560 512 byte sectors)
 107                         get_image "$1" | dd of=/dev/mmcblk0 bs=1310720 seek=1 conv=fsync
 108
 109                         mount -o rw,noatime /dev/$recoverydev /tmp/recovery
 110                         [ -f "/tmp/mac_addr" ] && mv -f /tmp/mac_addr /tmp/recovery
 111                         sync
 112                         umount /tmp/recovery
 113                 fi
 114                 ;;
 115         *)
 116                 default_do_upgrade "$1"
 117                 ;;
 118         esac
 119 }
 120
 121 platform_check_image() {
 122         local magic="$(get_magic_long "$1")"
 123
 124         [ "$#" -gt 1 ] && return 1
 125
 126         case "$(board_name)" in
 127         bananapi,bpi-r2|\
 128         unielec,u7623-02)
 129                 [ "$magic" != "d00dfeed" ] && {
 130                         echo "Invalid image type."
 131                         return 1
 132                 }
 133                 ;;
 134         unielec,u7623-02-emmc-512m)
 135                 # Can always upgrade to the new-style full image
 136                 [ "$magic" = "53444d4d" ] && return 0
 137
 138                 # need to update to new bootchain via full image first
 139                 [ "$magic" = "d00dfeed" ] && {
 140                         echo "Please use full eMMC image to update bootloader first."
 141                         return 1
 142                 }
 143
 144                 # Legacy uImage directly at 0xA00 on the eMMC.
 145                 [ "$magic" != "27051956" ] && {
 146                         echo "Invalid image type."
 147                         return 1
 148                 }
 149                 ;;
 150         *)
 151                 echo "Sysupgrade is not supported on your board yet."
 152                 return 1
 153                 ;;
 154         esac
 155
 156         return 0
 157 }
 158
 159 platform_copy_config() {
 160         case "$(board_name)" in
 161         bananapi,bpi-r2|\
 162         unielec,u7623-02)
 163                 emmc_copy_config
 164                 ;;
 165         unielec,u7623-02-emmc-512m)
 166                 # platform_do_upgrade() will have set $recoverydev
 167                 if [ -n "$recoverydev" ]; then
 168                         mkdir -p /tmp/recovery
 169                         mount -o rw,noatime "/dev/$recoverydev" -t vfat /tmp/recovery
 170                         cp -af "$UPGRADE_BACKUP" "/tmp/recovery/$BACKUP_FILE"
 171                         sync
 172                         umount /tmp/recovery
 173                 fi
 174                 ;;
 175         esac
 176 }