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

   1
   2 REQUIRE_IMAGE_METADATA=1
   3 RAMFS_COPY_BIN='fwtool'
   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                 sync
  88                 export_bootdevice
  89                 export_partdevice fitpart 3
  90                 [ "$fitpart" ] || return 1
  91                 export UPGRADE_MMC_PARTDEV="/dev/$fitpart"
  92                 export UPGRADE_MMC_IMAGE_BLOCKS=$(($(get_image "$1" | fwtool -i /dev/null -T - | dd of=$UPGRADE_MMC_PARTDEV bs=512 2>&1 | grep "records out" | cut -d' ' -f1)))
  93                 [ "$UPGRADE_MMC_IMAGE_BLOCKS" ] || return 0
  94                 dd if=/dev/zero of=$UPGRADE_MMC_PARTDEV bs=512 seek=$UPGRADE_MMC_IMAGE_BLOCKS count=8
  95                 ;;
  96
  97         unielec,u7623-02-emmc-512m)
  98                 local magic="$(get_magic_long "$1")"
  99                 if [ "$magic" = "53444d4d" ]; then
 100                         mtk_mmc_full_upgrade "$1"
 101                 else # Old partial image starting with uImage
 102                         # Keep the persistent random mac address (if it exists)
 103                         recoverydev=mmcblk0p1
 104                         mkdir -p /tmp/recovery
 105                         mount -o rw,noatime /dev/$recoverydev /tmp/recovery
 106                         [ -f "/tmp/recovery/mac_addr" ] && \
 107                                 mv -f /tmp/recovery/mac_addr /tmp/
 108                         umount /tmp/recovery
 109
 110                         # 1310720 is the offset in bytes from the start of eMMC and to
 111                         # the location of the kernel (2560 512 byte sectors)
 112                         get_image "$1" | dd of=/dev/mmcblk0 bs=1310720 seek=1 conv=fsync
 113
 114                         mount -o rw,noatime /dev/$recoverydev /tmp/recovery
 115                         [ -f "/tmp/mac_addr" ] && mv -f /tmp/mac_addr /tmp/recovery
 116                         sync
 117                         umount /tmp/recovery
 118                 fi
 119                 ;;
 120         *)
 121                 default_do_upgrade "$1"
 122                 ;;
 123         esac
 124 }
 125
 126 PART_NAME=firmware
 127
 128 platform_check_image() {
 129         local board=$(board_name)
 130         local magic="$(get_magic_long "$1")"
 131         local diskdev partdev diff
 132
 133         [ "$#" -gt 1 ] && return 1
 134
 135         case "$board" in
 136         bananapi,bpi-r2)
 137                 [ "$magic" != "d00dfeed" ] && {
 138                         echo "Invalid image type."
 139                         return 1
 140                 }
 141                 ;;
 142         unielec,u7623-02-emmc-512m)
 143                 # Can always upgrade to the new-style full image
 144                 [ "$magic" = "53444d4d" ] && return 0
 145
 146                 # Legacy uImage directly at 0xA00 on the eMMC.
 147                 [ "$magic" != "27051956" ] && {
 148                         echo "Invalid image type."
 149                         return 1
 150                 }
 151                 rootpart=$(cat /proc/cmdline)
 152                 rootpart="${rootpart##*root=}"
 153                 rootpart="${rootpart%% *}"
 154                 [ "$rootpart" != "/dev/mmcblk0p2" ] && {
 155                         echo "Cannot downgrade to legacy image."
 156                         return 1
 157                 }
 158                 return 0
 159                 ;;
 160         *)
 161                 echo "Sysupgrade is not supported on your board yet."
 162                 return 1
 163                 ;;
 164         esac
 165
 166         return 0
 167 }
 168
 169 platform_copy_config_mmc() {
 170         if [ ! -e "$UPGRADE_BACKUP" ] ||
 171            [ ! -e "$UPGRADE_MMC_PARTDEV" ] ||
 172            [ ! "$UPGRADE_MMC_IMAGE_BLOCKS" ]; then
 173                 return
 174         fi
 175         dd if="$UPGRADE_BACKUP" of="$UPGRADE_MMC_PARTDEV" bs=512 seek=$UPGRADE_MMC_IMAGE_BLOCKS
 176         sync
 177 }
 178
 179 platform_copy_config() {
 180         case "$(board_name)" in
 181         bananapi,bpi-r2)
 182                 platform_copy_config_mmc
 183                 ;;
 184         unielec,u7623-02-emmc-512m)
 185                 # platform_do_upgrade() will have set $recoverydev
 186                 if [ -n "$recoverydev" ]; then
 187                         mkdir -p /tmp/recovery
 188                         mount -o rw,noatime "/dev/$recoverydev" -t vfat /tmp/recovery
 189                         cp -af "$UPGRADE_BACKUP" "/tmp/recovery/$BACKUP_FILE"
 190                         sync
 191                         umount /tmp/recovery
 192                 fi
 193                 ;;
 194         esac
 195 }