3 # $(1): file to read magic from
4 # $(2): offset in bytes
6 dd if="$1" skip=$2 bs=1 count=4 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"'
12 magic=$(get_magic_long "$1")
24 magic=$(get_magic_long_at "$1" 14)
25 [ "$magic" = "55324e44" ] && {
33 platform_check_image() {
34 [ "$#" -gt 1 ] && return 1
36 local file_type=$(brcm47xx_identify "$1")
41 local header_len=$((0x$(get_magic_long_at "$1" 4)))
42 local board_id_len=$(($header_len - 40))
43 local board_id=$(dd if="$1" skip=40 bs=1 count=$board_id_len 2>/dev/null | hexdump -v -e '1/1 "%c"')
44 echo "Found CHK image with device board_id $board_id"
46 magic=$(get_magic_long_at "$1" "$header_len")
47 [ "$magic" != "48445230" ] && {
48 echo "No valid TRX firmware in the CHK image"
55 magic=$(dd if="$1" bs=1 count=4 2>/dev/null | hexdump -v -e '1/1 "%c"')
56 echo "Found CyberTAN image with device magic: $magic"
58 magic=$(get_magic_long_at "$1" 32)
59 [ "$magic" != "48445230" ] && {
60 echo "No valid TRX firmware in the CyberTAN image"
70 echo "Invalid image type. Please use only .trx files"
76 platform_do_upgrade_chk() {
77 local header_len=$((0x$(get_magic_long_at "$1" 4)))
78 local trx="/tmp/$1.trx"
80 dd if="$1" of="$trx" bs=$header_len skip=1
82 default_do_upgrade "$trx" "$@"
85 platform_do_upgrade_cybertan() {
86 local trx="/tmp/$1.trx"
88 dd if="$1" of="$trx" bs=32 skip=1
90 default_do_upgrade "$trx" "$@"
93 platform_do_upgrade() {
94 local file_type=$(brcm47xx_identify "$1")
97 "chk") platform_do_upgrade_chk "$ARGV";;
98 "cybertan") platform_do_upgrade_cybertan "$ARGV";;
99 *) default_do_upgrade "$ARGV";;