target/linux/ar71xx/base-files/lib/upgrade/om2p.sh

   1 # The U-Boot loader of the OM2P requires image sizes and checksums to be
   2 # provided in the U-Boot environment.
   3 # The OM2P comes with 2 main partitions - while one is active sysupgrade
   4 # will flash the other. The boot order is changed to boot the newly
   5 # flashed partition. If the new partition can't be booted due to upgrade
   6 # failures the previously used partition is loaded.
   7
   8 trim()
   9 {
  10         echo $1
  11 }
  12
  13 cfg_value_get()
  14 {
  15         local cfg=$1 cfg_opt
  16         local section=$2 our_section=0
  17         local param=$3 our_param=
  18
  19         for cfg_opt in $cfg
  20                 do
  21                         [ "$cfg_opt" = "[$section]" ] && our_section=1 && continue
  22                         [ "$our_section" = "1" ] || continue
  23
  24                         our_param=$(echo ${cfg_opt%%=*})
  25                         [ "$param" = "$our_param" ] && echo ${cfg_opt##*=} && break
  26                 done
  27 }
  28
  29 # make sure we got uboot-envtools and fw_env.config copied over to the ramfs
  30 platform_add_ramfs_ubootenv()
  31 {
  32         [ -e /usr/sbin/fw_printenv ] && install_bin /usr/sbin/fw_printenv /usr/sbin/fw_setenv
  33         [ -e /etc/fw_env.config ] && install_file /etc/fw_env.config
  34 }
  35 append sysupgrade_pre_upgrade platform_add_ramfs_ubootenv
  36
  37 platform_check_image_om2p()
  38 {
  39         local img_magic=$1
  40         local img_path=$2
  41         local fw_printenv=/usr/sbin/fw_printenv
  42         local img_board_target= img_num_files= i=0
  43         local cfg_name= kernel_name= rootfs_name=
  44
  45         case "$img_magic" in
  46                 # Combined Extended Image v1
  47                 43453031)
  48                         img_board_target=$(trim $(dd if="$img_path" bs=4 skip=1 count=8 2>/dev/null))
  49                         img_num_files=$(trim $(dd if="$img_path" bs=2 skip=18 count=1 2>/dev/null))
  50                         ;;
  51                 *)
  52                         echo "Invalid image ($img_magic). Use combined extended images on this platform"
  53                         return 1
  54                         ;;
  55         esac
  56
  57         case "$img_board_target" in
  58                 OM2P)
  59                         ;;
  60                 *)
  61                         echo "Invalid board target ($img_board_target). Use the correct image for this platform"
  62                         return 1
  63                         ;;
  64         esac
  65
  66         [ $img_num_files -ne 3 ] && {
  67                 echo "Invalid number of embedded images ($img_num_files). Use the correct image for this platform"
  68                 return 1
  69         }
  70
  71         cfg_name=$(trim $(dd if="$img_path" bs=2 skip=19 count=16 2>/dev/null))
  72
  73         [ "$cfg_name" != "fwupgrade.cfg" ] && {
  74                 echo "Invalid embedded config file ($cfg_name). Use the correct image for this platform"
  75                 return 1
  76         }
  77
  78         kernel_name=$(trim $(dd if="$img_path" bs=2 skip=55 count=16 2>/dev/null))
  79
  80         [ "$kernel_name" != "kernel" ] && {
  81                 echo "Invalid embedded kernel file ($kernel_name). Use the correct image for this platform"
  82                 return 1
  83         }
  84
  85         rootfs_name=$(trim $(dd if="$img_path" bs=2 skip=91 count=16 2>/dev/null))
  86
  87         [ "$rootfs_name" != "rootfs" ] && {
  88                 echo "Invalid embedded kernel file ($rootfs_name). Use the correct image for this platform"
  89                 return 1
  90         }
  91
  92         [ ! -x "$fw_printenv" ] && {
  93                 echo "Please install uboot-envtools!"
  94                 return 1
  95         }
  96
  97         [ ! -r "/etc/fw_env.config" ] && {
  98                 echo "/etc/fw_env.config is missing"
  99                 return 1
 100         }
 101
 102         return 0
 103 }
 104
 105 platform_do_upgrade_om2p()
 106 {
 107         local img_path=$1
 108         local kernel_start_addr= kernel_size= kernel_md5=
 109         local rootfs_size= rootfs_checksize= rootfs_md5=
 110         local kernel_bsize= total_size=7340032
 111         local data_offset=$((64 * 1024)) block_size=$((256 * 1024)) offset=
 112         local uboot_env_upgrade="/tmp/fw_env_upgrade"
 113         local cfg_size= kernel_size= rootfs_size=
 114         local append=""
 115
 116         [ -f "$CONF_TAR" -a "$SAVE_CONFIG" -eq 1 ] && append="-j $CONF_TAR"
 117
 118         cfg_size=$(dd if="$img_path" bs=2 skip=35 count=4 2>/dev/null)
 119         kernel_size=$(dd if="$img_path" bs=2 skip=71 count=4 2>/dev/null)
 120         rootfs_size=$(dd if="$img_path" bs=2 skip=107 count=4 2>/dev/null)
 121
 122         cfg_content=$(dd if="$img_path" bs=1 skip=$data_offset count=$(echo $((0x$cfg_size))) 2>/dev/null)
 123
 124         kernel_md5=$(cfg_value_get "$cfg_content" "vmlinux" "md5sum")
 125         rootfs_md5=$(cfg_value_get "$cfg_content" "rootfs" "md5sum")
 126         rootfs_checksize=$(cfg_value_get "$cfg_content" "rootfs" "checksize")
 127
 128         if [ "$((0x$kernel_size % $block_size))" = "0" ]
 129                 then
 130                         kernel_bsize=$(echo $((0x$kernel_size)))
 131                 else
 132                         kernel_bsize=$((0x$kernel_size + ($block_size - (0x$kernel_size % $block_size))))
 133         fi
 134
 135         mtd -q erase inactive
 136
 137         offset=$(echo $(($data_offset + 0x$cfg_size + 0x$kernel_size)))
 138         dd if="$img_path" bs=1 skip=$offset count=$(echo $((0x$rootfs_size))) 2>&- | mtd -n -p $kernel_bsize $append write - "inactive"
 139
 140         offset=$(echo $(($data_offset + 0x$cfg_size)))
 141         dd if="$img_path" bs=1 skip=$offset count=$(echo $((0x$kernel_size))) 2>&- | mtd -n write - "inactive"
 142
 143         rm $uboot_env_upgrade 2>&-
 144
 145         if [ "$(grep 'mtd3:.*inactive' /proc/mtd)" ]
 146                 then
 147                         printf "kernel_size_1 %u\n" $(($kernel_bsize / 1024)) >> $uboot_env_upgrade
 148                         printf "rootfs_size_1 %u\n" $((($total_size - $kernel_bsize) / 1024)) >> $uboot_env_upgrade
 149                         printf "bootseq 1,2\n" >> $uboot_env_upgrade
 150                         kernel_start_addr=0x9f1c0000
 151                 else
 152                         printf "kernel_size_2 %u\n" $(($kernel_bsize / 1024)) >> $uboot_env_upgrade
 153                         printf "rootfs_size_2 %u\n" $((($total_size - $kernel_bsize) / 1024)) >> $uboot_env_upgrade
 154                         printf "bootseq 2,1\n" >> $uboot_env_upgrade
 155                         kernel_start_addr=0x9f8c0000
 156         fi
 157
 158         printf "vmlinux_start_addr %s\n" $kernel_start_addr >> $uboot_env_upgrade
 159         printf "vmlinux_size 0x%s\n" $kernel_size >> $uboot_env_upgrade
 160         printf "vmlinux_checksum %s\n" $kernel_md5 >> $uboot_env_upgrade
 161         printf "rootfs_start_addr 0x%x\n" $(($kernel_start_addr + $kernel_bsize)) >> $uboot_env_upgrade
 162         printf "rootfs_size %s\n" $rootfs_checksize >> $uboot_env_upgrade
 163         printf "rootfs_checksum %s\n" $rootfs_md5 >> $uboot_env_upgrade
 164
 165         fw_setenv -s $uboot_env_upgrade || {
 166                 echo "failed to update U-Boot environment"
 167                 return 1
 168         }
 169 }