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

   1 PART_NAME=firmware
   2
   3 # $(1): file to read magic from
   4 # $(2): offset in bytes
   5 get_magic_long_at() {
   6         dd if="$1" skip=$2 bs=1 count=4 2>/dev/null | hexdump -v -e '1/1 "%02x"'
   7 }
   8
   9 platform_machine() {
  10         cat /proc/device-tree/compatible | tr '\0' '\t' | cut -f 1
  11 }
  12
  13 platform_flash_type() {
  14         # On NAND devices "rootfs" is UBI volume, so won't be find in /proc/mtd
  15         grep -q "\"rootfs\"" /proc/mtd && {
  16                 echo "serial"
  17                 return
  18         }
  19
  20         echo "nand"
  21 }
  22
  23 platform_expected_image() {
  24         local machine=$(platform_machine)
  25
  26         case "$machine" in
  27                 "netgear,r6250v1")      echo "chk U12H245T00_NETGEAR"; return;;
  28                 "netgear,r6300v2")      echo "chk U12H240T00_NETGEAR"; return;;
  29                 "netgear,r8000")        echo "chk U12H315T00_NETGEAR"; return;;
  30         esac
  31 }
  32
  33 platform_identify() {
  34         local magic
  35
  36         magic=$(get_magic_long "$1")
  37         case "$magic" in
  38                 "48445230")
  39                         echo "trx"
  40                         return
  41                         ;;
  42                 "2a23245e")
  43                         echo "chk"
  44                         return
  45                         ;;
  46         esac
  47
  48         magic=$(get_magic_long_at "$1" 14)
  49         [ "$magic" = "55324e44" ] && {
  50                 echo "cybertan"
  51                 return
  52         }
  53
  54         echo "unknown"
  55 }
  56
  57 platform_check_image() {
  58         [ "$#" -gt 1 ] && return 1
  59
  60         [ "$(platform_flash_type)" = "nand" ] && {
  61                 echo "Firmware upgrade on NAND devices is not implemented."
  62                 return 1
  63         }
  64
  65         local file_type=$(platform_identify "$1")
  66         local magic
  67         local error=0
  68
  69         case "$file_type" in
  70                 "chk")
  71                         local header_len=$((0x$(get_magic_long_at "$1" 4)))
  72                         local board_id_len=$(($header_len - 40))
  73                         local board_id=$(dd if="$1" skip=40 bs=1 count=$board_id_len 2>/dev/null | hexdump -v -e '1/1 "%c"')
  74                         local dev_board_id=$(platform_expected_image)
  75                         echo "Found CHK image with device board_id $board_id"
  76
  77                         [ -n "$dev_board_id" -a "chk $board_id" != "$dev_board_id" ] && {
  78                                 echo "Firmware board_id doesn't match device board_id ($dev_board_id)"
  79                                 error=1
  80                         }
  81
  82                         magic=$(get_magic_long_at "$1" "$header_len")
  83                         [ "$magic" != "48445230" ] && {
  84                                 echo "No valid TRX firmware in the CHK image"
  85                                 error=1
  86                         }
  87                 ;;
  88                 "cybertan")
  89                         local pattern=$(dd if="$1" bs=1 count=4 2>/dev/null | hexdump -v -e '1/1 "%c"')
  90                         local dev_pattern=$(platform_expected_image)
  91                         echo "Found CyberTAN image with device pattern: $pattern"
  92
  93                         [ -n "$dev_pattern" -a "cybertan $pattern" != "$dev_pattern" ] && {
  94                                 echo "Firmware pattern doesn't match device pattern ($dev_pattern)"
  95                                 error=1
  96                         }
  97
  98                         magic=$(get_magic_long_at "$1" 32)
  99                         [ "$magic" != "48445230" ] && {
 100                                 echo "No valid TRX firmware in the CyberTAN image"
 101                                 error=1
 102                         }
 103                 ;;
 104                 "trx")
 105                 ;;
 106                 *)
 107                         echo "Invalid image type. Please use only .trx files"
 108                         error=1
 109                 ;;
 110         esac
 111
 112         return $error
 113 }
 114
 115 # Extract TRX and use stadard upgrade method
 116 platform_do_upgrade_chk() {
 117         local header_len=$((0x$(get_magic_long_at "$1" 4)))
 118         local trx="/tmp/$1.trx"
 119
 120         dd if="$1" of="$trx" bs=$header_len skip=1
 121         shift
 122         platform_do_upgrade_trx "$trx" "$@"
 123 }
 124
 125 # Extract TRX and use stadard upgrade method
 126 platform_do_upgrade_cybertan() {
 127         local trx="/tmp/$1.trx"
 128
 129         dd if="$1" of="$trx" bs=32 skip=1
 130         shift
 131         platform_do_upgrade_trx "$trx" "$@"
 132 }
 133
 134 platform_do_upgrade_trx() {
 135         local flash_type=$(platform_flash_type)
 136
 137         case "$flash_type" in
 138                 "serial")
 139                         default_do_upgrade "$@"
 140                 ;;
 141                 "nand")
 142                         echo "Firmware upgrade on NAND devices is REALLY unsupported."
 143                 ;;
 144         esac
 145 }
 146
 147 platform_do_upgrade() {
 148         local file_type=$(platform_identify "$1")
 149
 150         case "$file_type" in
 151                 "chk")          platform_do_upgrade_chk "$ARGV";;
 152                 "cybertan")     platform_do_upgrade_cybertan "$ARGV";;
 153                 *)              platform_do_upgrade_trx "$ARGV";;
 154         esac
 155 }