3 # $(1): file to read magic from
4 # $(2): offset in bytes
6 dd if="$1" skip=$2 bs=1 count=4 2>/dev/null | hexdump -v -e '1/1 "%02x"'
10 cat /proc/device-tree/compatible | tr '\0' '\t' | cut -f 1
13 platform_flash_type() {
14 # On NAND devices "rootfs" is UBI volume, so won't be find in /proc/mtd
15 grep -q "\"rootfs\"" /proc/mtd && {
23 platform_expected_image() {
24 local machine=$(platform_machine)
27 "netgear,r6250v1") echo "chk U12H245T00_NETGEAR"; return;;
28 "netgear,r6300v2") echo "chk U12H240T00_NETGEAR"; return;;
29 "netgear,r8000") echo "chk U12H315T00_NETGEAR"; return;;
36 magic=$(get_magic_long "$1")
48 magic=$(get_magic_long_at "$1" 14)
49 [ "$magic" = "55324e44" ] && {
57 platform_check_image() {
58 [ "$#" -gt 1 ] && return 1
60 [ "$(platform_flash_type)" = "nand" ] && {
61 echo "Firmware upgrade on NAND devices is not implemented."
65 local file_type=$(platform_identify "$1")
71 local header_len=$((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 $board_id"
77 [ -n "$dev_board_id" -a "chk $board_id" != "$dev_board_id" ] && {
78 echo "Firmware board_id doesn't match device board_id ($dev_board_id)"
82 if ! otrx check "$1" -o "$header_len"; then
83 echo "No valid TRX firmware in the CHK image"
88 local pattern=$(dd if="$1" bs=1 count=4 2>/dev/null | hexdump -v -e '1/1 "%c"')
89 local dev_pattern=$(platform_expected_image)
90 echo "Found CyberTAN image with device pattern: $pattern"
92 [ -n "$dev_pattern" -a "cybertan $pattern" != "$dev_pattern" ] && {
93 echo "Firmware pattern doesn't match device pattern ($dev_pattern)"
97 if ! otrx check "$1" -o 32; then
98 echo "No valid TRX firmware in the CyberTAN image"
103 if ! otrx check "$1"; then
104 echo "Invalid (corrupted?) TRX firmware"
109 echo "Invalid image type. Please use only .trx files"
117 platform_extract_trx_from_chk() {
118 local header_len=$((0x$(get_magic_long_at "$1" 4)))
120 dd if="$1" of="$2" bs=$header_len skip=1
123 platform_extract_trx_from_cybertan() {
124 dd if="$1" of="$2" bs=32 skip=1
127 platform_pre_upgrade() {
128 local file_type=$(platform_identify "$1")
129 local dir="/tmp/sysupgrade-bcm53xx"
132 [ "$(platform_flash_type)" != "nand" ] && return
136 "chk") trx="/tmp/$1.trx"; platform_extract_trx_from_chk "$1" "$trx";;
137 "cybertan") trx="/tmp/$1.trx"; platform_extract_trx_from_cybertan "$1" "$trx";;
140 # Extract partitions from trx
143 otrx extract "$trx" \
147 # Firmwares without UBI image should be flashed "normally"
148 local root_type=$(identify $dir/root)
149 [ "$root_type" != "ubi" ] && return
151 echo "Provided firmware contains kernel and UBI image, but flashing it is unsupported yet"
155 platform_do_upgrade() {
156 local file_type=$(platform_identify "$1")
159 [ "$(platform_flash_type)" == "nand" ] && {
160 echo "Flashing firmware without UBI for rootfs. All erase counters will be lost."
164 "chk") trx="/tmp/$1.trx"; platform_extract_trx_from_chk "$1" "$trx";;
165 "cybertan") trx="/tmp/$1.trx"; platform_extract_trx_from_cybertan "$1" "$trx";;
169 default_do_upgrade "$trx" "$@"