target/linux/bcm53xx/base-files/lib/upgrade/platform.sh

   1 RAMFS_COPY_BIN='osafeloader oseama'
   2
   3 PART_NAME=firmware
   4
   5 # $(1): file to read magic from
   6 # $(2): offset in bytes
   7 get_magic_long_at() {
   8         dd if="$1" skip=$2 bs=1 count=4 2>/dev/null | hexdump -v -e '1/1 "%02x"'
   9 }
  10
  11 platform_flash_type() {
  12         # On NAND devices "rootfs" is UBI volume, so won't be find in /proc/mtd
  13         grep -q "\"rootfs\"" /proc/mtd && {
  14                 echo "serial"
  15                 return
  16         }
  17
  18         echo "nand"
  19 }
  20
  21 platform_expected_image() {
  22         local machine=$(board_name)
  23
  24         case "$machine" in
  25                 "dlink,dir-885l")       echo "seama wrgac42_dlink.2015_dir885l"; return;;
  26                 "netgear,r6250v1")      echo "chk U12H245T00_NETGEAR"; return;;
  27                 "netgear,r6300v2")      echo "chk U12H240T00_NETGEAR"; return;;
  28                 "netgear,r7000")        echo "chk U12H270T00_NETGEAR"; return;;
  29                 "netgear,r7900")        echo "chk U12H315T30_NETGEAR"; return;;
  30                 "netgear,r8000")        echo "chk U12H315T00_NETGEAR"; return;;
  31                 "netgear,r8500")        echo "chk U12H334T00_NETGEAR"; return;;
  32                 "tplink,archer-c9-v1")  echo "safeloader"; return;;
  33         esac
  34 }
  35
  36 platform_identify() {
  37         local magic
  38
  39         magic=$(get_magic_long "$1")
  40         case "$magic" in
  41                 "48445230")
  42                         echo "trx"
  43                         return
  44                         ;;
  45                 "2a23245e")
  46                         echo "chk"
  47                         return
  48                         ;;
  49                 "5ea3a417")
  50                         echo "seama"
  51                         return
  52                         ;;
  53         esac
  54
  55         magic=$(get_magic_long_at "$1" 14)
  56         [ "$magic" = "55324e44" ] && {
  57                 echo "cybertan"
  58                 return
  59         }
  60
  61         if osafeloader info "$1" > /dev/null 2>&1; then
  62                 echo "safeloader"
  63                 return
  64         fi
  65
  66         echo "unknown"
  67 }
  68
  69 platform_check_image() {
  70         [ "$#" -gt 1 ] && return 1
  71
  72         local file_type=$(platform_identify "$1")
  73         local magic
  74         local error=0
  75
  76         case "$file_type" in
  77                 "chk")
  78                         local header_len=$((0x$(get_magic_long_at "$1" 4)))
  79                         local board_id_len=$(($header_len - 40))
  80                         local board_id=$(dd if="$1" skip=40 bs=1 count=$board_id_len 2>/dev/null | hexdump -v -e '1/1 "%c"')
  81                         local dev_board_id=$(platform_expected_image)
  82                         echo "Found CHK image with device board_id $board_id"
  83
  84                         [ -n "$dev_board_id" -a "chk $board_id" != "$dev_board_id" ] && {
  85                                 echo "Firmware board_id doesn't match device board_id ($dev_board_id)"
  86                                 error=1
  87                         }
  88
  89                         if ! otrx check "$1" -o "$header_len"; then
  90                                 echo "No valid TRX firmware in the CHK image"
  91                                 error=1
  92                         fi
  93                 ;;
  94                 "cybertan")
  95                         local pattern=$(dd if="$1" bs=1 count=4 2>/dev/null | hexdump -v -e '1/1 "%c"')
  96                         local dev_pattern=$(platform_expected_image)
  97                         echo "Found CyberTAN image with device pattern: $pattern"
  98
  99                         [ -n "$dev_pattern" -a "cybertan $pattern" != "$dev_pattern" ] && {
 100                                 echo "Firmware pattern doesn't match device pattern ($dev_pattern)"
 101                                 error=1
 102                         }
 103
 104                         if ! otrx check "$1" -o 32; then
 105                                 echo "No valid TRX firmware in the CyberTAN image"
 106                                 error=1
 107                         fi
 108                 ;;
 109                 "safeloader")
 110                 ;;
 111                 "seama")
 112                         local img_signature=$(oseama info "$1" | grep "Meta entry:.*signature=" | sed "s/.*=//")
 113                         local dev_signature=$(platform_expected_image)
 114                         echo "Found Seama image with device signature: $img_signature"
 115
 116                         [ -n "$dev_signature" -a "seama $img_signature" != "$dev_signature" ] && {
 117                                 echo "Firmware signature doesn't match device signature ($dev_signature)"
 118                                 error=1
 119                         }
 120
 121                         $(oseama info "$1" -e 0 | grep -q "Meta entry:.*type=firmware") || {
 122                                 echo "Seama container doesn't have firmware entity"
 123                                 error=1
 124                         }
 125                 ;;
 126                 "trx")
 127                         local expected=$(platform_expected_image)
 128
 129                         [ "$expected" == "safeloader" ] && {
 130                                 echo "This device expects SafeLoader format and may not work with TRX"
 131                                 error=1
 132                         }
 133
 134                         if ! otrx check "$1"; then
 135                                 echo "Invalid (corrupted?) TRX firmware"
 136                                 error=1
 137                         fi
 138                 ;;
 139                 *)
 140                         echo "Invalid image type. Please use only .trx files"
 141                         error=1
 142                 ;;
 143         esac
 144
 145         return $error
 146 }
 147
 148 # $(1): image for upgrade (with possible extra header)
 149 # $(2): offset of trx in image
 150 platform_pre_upgrade_trx() {
 151         local dir="/tmp/sysupgrade-bcm53xx"
 152         local trx="$1"
 153         local offset="$2"
 154
 155         # Extract partitions from trx
 156         rm -fR $dir
 157         mkdir -p $dir
 158         otrx extract "$trx" \
 159                 ${offset:+-o $offset} \
 160                 -1 $dir/kernel \
 161                 -2 $dir/root
 162         [ $? -ne 0 ] && {
 163                 echo "Failed to extract TRX partitions."
 164                 return
 165         }
 166
 167         # Firmwares without UBI image should be flashed "normally"
 168         local root_type=$(identify $dir/root)
 169         [ "$root_type" != "ubi" ] && {
 170                 echo "Provided firmware doesn't use UBI for rootfs."
 171                 return
 172         }
 173
 174         # Prepare TRX file with just a kernel that will replace current one
 175         local linux_length=$(grep "\"linux\"" /proc/mtd | sed "s/mtd[0-9]*:[ \t]*\([^ \t]*\).*/\1/")
 176         [ -z "$linux_length" ] && {
 177                 echo "Unable to find \"linux\" partition size"
 178                 exit 1
 179         }
 180         linux_length=$((0x$linux_length))
 181         local kernel_length=$(wc -c $dir/kernel | cut -d ' ' -f 1)
 182         [ $kernel_length -gt $linux_length ] && {
 183                 echo "New kernel doesn't fit \"linux\" partition."
 184                 return
 185         }
 186         rm -f /tmp/null.bin
 187         rm -f /tmp/kernel.trx
 188         touch /tmp/null.bin
 189         otrx create /tmp/kernel.trx \
 190                 -f $dir/kernel -b $(($linux_length + 28)) \
 191                 -f /tmp/null.bin
 192         [ $? -ne 0 ] && {
 193                 echo "Failed to create simple TRX with new kernel."
 194                 return
 195         }
 196
 197         # Prepare UBI image (drop unwanted extra blocks)
 198         local ubi_length=0
 199         while [ "$(dd if=$dir/root skip=$ubi_length bs=1 count=4 2>/dev/null)" = "UBI#" ]; do
 200                 ubi_length=$(($ubi_length + 131072))
 201         done
 202         dd if=$dir/root of=/tmp/root.ubi bs=131072 count=$((ubi_length / 131072)) 2>/dev/null
 203         [ $? -ne 0 ] && {
 204                 echo "Failed to prepare new UBI image."
 205                 return
 206         }
 207
 208         # Flash
 209         mtd write /tmp/kernel.trx firmware
 210         nand_do_upgrade /tmp/root.ubi
 211 }
 212
 213 platform_pre_upgrade_seama() {
 214         local dir="/tmp/sysupgrade-bcm53xx"
 215         local seama="$1"
 216         local tmp
 217
 218         # Extract Seama entity from Seama seal
 219         rm -fR $dir
 220         mkdir -p $dir
 221         oseama extract "$seama" \
 222                 -e 0 \
 223                 -o $dir/seama.entity
 224         [ $? -ne 0 ] && {
 225                 echo "Failed to extract Seama entity."
 226                 return
 227         }
 228         local entity_size=$(wc -c $dir/seama.entity | cut -d ' ' -f 1)
 229
 230         local ubi_offset=0
 231         tmp=0
 232         while [ 1 ]; do
 233                 [ $tmp -ge $entity_size ] && break
 234                 [ "$(dd if=$dir/seama.entity skip=$tmp bs=1 count=4 2>/dev/null)" = "UBI#" ] && {
 235                         ubi_offset=$tmp
 236                         break
 237                 }
 238                 tmp=$(($tmp + 131072))
 239         done
 240         [ $ubi_offset -eq 0 ] && {
 241                 echo "Failed to find UBI in Seama entity."
 242                 return
 243         }
 244
 245         local ubi_length=0
 246         while [ "$(dd if=$dir/seama.entity skip=$(($ubi_offset + $ubi_length)) bs=1 count=4 2>/dev/null)" = "UBI#" ]; do
 247                 ubi_length=$(($ubi_length + 131072))
 248         done
 249
 250         dd if=$dir/seama.entity of=$dir/kernel.seama bs=131072 count=$(($ubi_offset / 131072)) 2>/dev/null
 251         dd if=$dir/seama.entity of=$dir/root.ubi bs=131072 skip=$(($ubi_offset / 131072)) count=$(($ubi_length / 131072)) 2>/dev/null
 252
 253         # Flash
 254         local kernel_size=$(sed -n 's/mtd[0-9]*: \([0-9a-f]*\).*"\(kernel\|linux\)".*/\1/p' /proc/mtd)
 255         mtd write $dir/kernel.seama firmware
 256         mtd ${kernel_size:+-c 0x$kernel_size} fixseama firmware
 257         nand_do_upgrade $dir/root.ubi
 258 }
 259
 260 platform_pre_upgrade() {
 261         local file_type=$(platform_identify "$1")
 262
 263         [ "$(platform_flash_type)" != "nand" ] && return
 264
 265         # Find trx offset
 266         case "$file_type" in
 267                 "chk")          platform_pre_upgrade_trx "$1" $((0x$(get_magic_long_at "$1" 4)));;
 268                 "cybertan")     platform_pre_upgrade_trx "$1" 32;;
 269                 "seama")        platform_pre_upgrade_seama "$1";;
 270                 "trx")          platform_pre_upgrade_trx "$1";;
 271         esac
 272 }
 273
 274 platform_trx_from_chk_cmd() {
 275         local header_len=$((0x$(get_magic_long_at "$1" 4)))
 276
 277         echo -n dd bs=$header_len skip=1
 278 }
 279
 280 platform_trx_from_cybertan_cmd() {
 281         echo -n dd bs=32 skip=1
 282 }
 283
 284 platform_img_from_safeloader() {
 285         local dir="/tmp/sysupgrade-bcm53xx"
 286
 287         # Extract partitions from SafeLoader
 288         rm -fR $dir
 289         mkdir -p $dir
 290         osafeloader extract "$1" \
 291                 -p "os-image" \
 292                 -o $dir/os-image
 293         osafeloader extract "$1" \
 294                 -p "file-system" \
 295                 -o $dir/file-system
 296
 297         mtd write $dir/file-system rootfs
 298
 299         echo -n $dir/os-image
 300 }
 301
 302 platform_img_from_seama() {
 303         local dir="/tmp/sysupgrade-bcm53xx"
 304         local offset=$(oseama info "$1" -e 0 | grep "Entity offset:" | sed "s/.*:\s*//")
 305         local size=$(oseama info "$1" -e 0 | grep "Entity size:" | sed "s/.*:\s*//")
 306
 307         # Busybox doesn't support required iflag-s
 308         # echo -n dd iflag=skip_bytes,count_bytes skip=$offset count=$size
 309
 310         rm -fR $dir
 311         mkdir -p $dir
 312         dd if="$1" of=$dir/image-noheader.bin bs=$offset skip=1
 313         dd if=$dir/image-noheader.bin of=$dir/image-entity.bin bs=$size count=1
 314
 315         echo -n $dir/image-entity.bin
 316 }
 317
 318 platform_do_upgrade() {
 319         local file_type=$(platform_identify "$1")
 320         local trx="$1"
 321         local cmd=
 322
 323         [ "$(platform_flash_type)" == "nand" ] && {
 324                 echo "Writing whole image to NAND flash. All erase counters will be lost."
 325         }
 326
 327         case "$file_type" in
 328                 "chk")          cmd=$(platform_trx_from_chk_cmd "$trx");;
 329                 "cybertan")     cmd=$(platform_trx_from_cybertan_cmd "$trx");;
 330                 "safeloader")   trx=$(platform_img_from_safeloader "$trx");;
 331                 "seama")        trx=$(platform_img_from_seama "$trx");;
 332         esac
 333
 334         default_do_upgrade "$trx" "$cmd"
 335 }