3 # $(1): file to read magic from
4 # $(2): offset in bytes
6 dd if="$1" skip
=$2 bs
=1 count
=4 2>/dev
/null |
hexdump -v -n 4 -e '1/1 "%02x"'
10 grep "machine" /proc
/cpuinfo |
sed "s/.*:[ \t]*//"
13 platform_expected_chk_board_id
() {
14 local machine
=$
(platform_machine
)
17 "Netgear WNDR4000") echo "U12H181T00_NETGEAR"; return;;
21 platform_expected_cybertan_pattern
() {
22 local machine
=$
(platform_machine
)
25 "Linksys E1000 V2.1") echo "E100"; return;;
32 magic
=$
(get_magic_long
"$1")
44 magic
=$
(get_magic_long_at
"$1" 14)
45 [ "$magic" = "55324e44" ] && {
53 platform_check_image
() {
54 [ "$#" -gt 1 ] && return 1
56 local file_type
=$
(brcm47xx_identify
"$1")
61 local header_len
=$
((0x$
(get_magic_long_at
"$1" 4)))
62 local board_id_len
=$
(($header_len - 40))
63 local board_id
=$
(dd if="$1" skip
=40 bs
=1 count
=$board_id_len 2>/dev
/null |
hexdump -v -e '1/1 "%c"')
64 local dev_board_id
=$
(platform_expected_chk_board_id
)
65 echo "Found CHK image with device board_id $board_id"
67 [ -n "$dev_board_id" -a "$board_id" != "$dev_board_id" ] && {
68 echo "Firmware board_id doesn't match device board_id ($dev_board_id)"
72 magic
=$
(get_magic_long_at
"$1" "$header_len")
73 [ "$magic" != "48445230" ] && {
74 echo "No valid TRX firmware in the CHK image"
81 local pattern
=$
(dd if="$1" bs
=1 count
=4 2>/dev
/null |
hexdump -v -e '1/1 "%c"')
82 local dev_pattern
=$
(platform_expected_cybertan_pattern
)
83 echo "Found CyberTAN image with device pattern: $pattern"
85 [ -n "$dev_pattern" -a "$pattern" != "$dev_pattern" ] && {
86 echo "Firmware pattern doesn't match device pattern ($dev_pattern)"
90 magic
=$
(get_magic_long_at
"$1" 32)
91 [ "$magic" != "48445230" ] && {
92 echo "No valid TRX firmware in the CyberTAN image"
102 echo "Invalid image type. Please use only .trx files"
108 platform_do_upgrade_chk
() {
109 local header_len
=$
((0x$
(get_magic_long_at
"$1" 4)))
110 local trx
="/tmp/$1.trx"
112 dd if="$1" of
="$trx" bs
=$header_len skip
=1
114 default_do_upgrade
"$trx" "$@"
117 platform_do_upgrade_cybertan
() {
118 local trx
="/tmp/$1.trx"
120 dd if="$1" of
="$trx" bs
=32 skip
=1
122 default_do_upgrade
"$trx" "$@"
125 platform_do_upgrade
() {
126 local file_type
=$
(brcm47xx_identify
"$1")
129 "chk") platform_do_upgrade_chk
"$ARGV";;
130 "cybertan") platform_do_upgrade_cybertan
"$ARGV";;
131 *) default_do_upgrade
"$ARGV";;