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PART_NAME=firmware
# $(1): file to read magic from
# $(2): offset in bytes
get_magic_long_at() {
dd if="$1" skip=$2 bs=1 count=4 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"'
}
platform_machine() {
grep "machine" /proc/cpuinfo | sed "s/.*:[ \t]*//"
}
platform_expected_image() {
local machine=$(platform_machine)
case "$machine" in
"Netgear WGR614 V8") echo "chk U12H072T00_NETGEAR"; return;;
"Netgear WGR614 V9") echo "chk U12H094T00_NETGEAR"; return;;
"Netgear WGR614 V10") echo "chk U12H139T01_NETGEAR"; return;;
"Netgear WNDR3300") echo "chk U12H093T00_NETGEAR"; return;;
"Netgear WNDR3400 V1") echo "chk U12H155T00_NETGEAR"; return;;
"Netgear WNDR3400 V2") echo "chk U12H187T00_NETGEAR"; return;;
"Netgear WNDR3400 V3") echo "chk U12H208T00_NETGEAR"; return;;
"Netgear WNDR3400 Vcna") echo "chk U12H155T01_NETGEAR"; return;;
"Netgear WNDR3700 V3") echo "chk U12H194T00_NETGEAR"; return;;
"Netgear WNDR4000") echo "chk U12H181T00_NETGEAR"; return;;
"Netgear WNDR4500 V1") echo "chk U12H189T00_NETGEAR"; return;;
"Netgear WNDR4500 V2") echo "chk U12H224T00_NETGEAR"; return;;
"Netgear WNR2000 V2") echo "chk U12H114T00_NETGEAR"; return;;
"Netgear WNR3500L") echo "chk U12H136T99_NETGEAR"; return;;
"Netgear WNR3500U") echo "chk U12H136T00_NETGEAR"; return;;
"Netgear WNR3500 V2") echo "chk U12H127T00_NETGEAR"; return;;
"Netgear WNR3500 V2vc") echo "chk U12H127T70_NETGEAR"; return;;
"Netgear WNR834B V2") echo "chk U12H081T00_NETGEAR"; return;;
"Linksys E900 V1") echo "cybertan E900"; return;;
"Linksys E1000 V1") echo "cybertan E100"; return;;
"Linksys E1000 V2") echo "cybertan E100"; return;;
"Linksys E1000 V2.1") echo "cybertan E100"; return;;
"Linksys E1200 V2") echo "cybertan E122"; return;;
"Linksys E2000 V1") echo "cybertan 32XN"; return;;
"Linksys E3000 V1") echo "cybertan 61XN"; return;;
"Linksys E3200 V1") echo "cybertan 3200"; return;;
"Linksys E4200 V1") echo "cybertan 4200"; return;;
"Linksys WRT150N V1.1") echo "cybertan N150"; return;;
"Linksys WRT150N V1") echo "cybertan N150"; return;;
"Linksys WRT160N V1") echo "cybertan N150"; return;;
"Linksys WRT160N V3") echo "cybertan N150"; return;;
"Linksys WRT300N V1") echo "cybertan EWCB"; return;;
"Linksys WRT300N V1.1") echo "cybertan EWC2"; return;;
"Linksys WRT310N V1") echo "cybertan 310N"; return;;
"Linksys WRT310N V2") echo "cybertan 310N"; return;;
"Linksys WRT610N V1") echo "cybertan 610N"; return;;
"Linksys WRT610N V2") echo "cybertan 610N"; return;;
esac
}
brcm47xx_identify() {
local magic
magic=$(get_magic_long "$1")
case "$magic" in
"48445230")
echo "trx"
return
;;
"2a23245e")
echo "chk"
return
;;
esac
magic=$(get_magic_long_at "$1" 14)
[ "$magic" = "55324e44" ] && {
echo "cybertan"
return
}
echo "unknown"
}
platform_check_image() {
[ "$#" -gt 1 ] && return 1
local file_type=$(brcm47xx_identify "$1")
local magic
local error=0
case "$file_type" in
"chk")
local header_len=$((0x$(get_magic_long_at "$1" 4)))
local board_id_len=$(($header_len - 40))
local board_id=$(dd if="$1" skip=40 bs=1 count=$board_id_len 2>/dev/null | hexdump -v -e '1/1 "%c"')
local dev_board_id=$(platform_expected_image)
echo "Found CHK image with device board_id $board_id"
[ -n "$dev_board_id" -a "chk $board_id" != "$dev_board_id" ] && {
echo "Firmware board_id doesn't match device board_id ($dev_board_id)"
error=1
}
if ! otrx check "$1" -o "$header_len"; then
echo "No valid TRX firmware in the CHK image"
error=1
fi
;;
"cybertan")
local pattern=$(dd if="$1" bs=1 count=4 2>/dev/null | hexdump -v -e '1/1 "%c"')
local dev_pattern=$(platform_expected_image)
echo "Found CyberTAN image with device pattern: $pattern"
[ -n "$dev_pattern" -a "cybertan $pattern" != "$dev_pattern" ] && {
echo "Firmware pattern doesn't match device pattern ($dev_pattern)"
error=1
}
if ! otrx check "$1" -o 32; then
echo "No valid TRX firmware in the CyberTAN image"
error=1
fi
;;
"trx")
if ! otrx check "$1"; then
echo "Invalid (corrupted?) TRX firmware"
error=1
fi
;;
*)
echo "Invalid image type. Please use only .trx files"
error=1
;;
esac
return $error
}
platform_trx_from_chk_cmd() {
local header_len=$((0x$(get_magic_long_at "$1" 4)))
echo -n dd bs=$header_len skip=1
}
platform_trx_from_cybertan_cmd() {
echo -n dd bs=32 skip=1
}
platform_do_upgrade() {
local file_type=$(brcm47xx_identify "$1")
local trx="$1"
local cmd=""
case "$file_type" in
"chk") cmd=$(platform_trx_from_chk_cmd "$trx");;
"cybertan") cmd=$(platform_trx_from_cybertan_cmd "$trx");;
esac
default_do_upgrade "$trx" "$cmd"
}
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