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ee5a6c1041
Add an extra function to patch the mac and fixup the checksum afterwards. Calculate the checksum position automatically. The offset to the mac address is the same for all checksum protected EEPROMs. No EEPROM requires a byte swapped mac address. The mac byte swap code was required due to an bug in the script that is now fixed. Signed-off-by: Mathias Kresin <dev@kresin.me>
159 lines
3.6 KiB
Bash
159 lines
3.6 KiB
Bash
#!/bin/sh
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# Based on ar71xx 10-ath9k-eeprom
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[ -e /lib/firmware/$FIRMWARE ] && exit 0
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. /lib/functions.sh
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. /lib/functions/system.sh
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. /lib/functions/lantiq.sh
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. /lib/upgrade/nand.sh
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# xor multiple hex values of the same length
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xor() {
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local val
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local ret="0x$1"
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local retlen=${#1}
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shift
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while [ -n "$1" ]; do
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val="0x$1"
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ret=$((ret ^ val))
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shift
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done
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printf "%0${retlen}x" "$ret"
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}
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ath9k_eeprom_die() {
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echo "ath9k eeprom: $*"
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exit 1
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}
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ath9k_eeprom_extract_raw() {
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local source=$1
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local offset=$2
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local swap=$3
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local size=4096
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local bs=1
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local conv=
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if [ $swap -gt 0 ]; then
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bs=2
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conv="conv=swab"
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size=$((size / bs))
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offset=$((offset / bs))
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fi
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dd if=$source of=/lib/firmware/$FIRMWARE bs=$bs skip=$offset count=$size $conv 2>/dev/null || \
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ath9k_eeprom_die "failed to extract from $mtd"
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}
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ath9k_eeprom_extract() {
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local part=$1
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local offset=$2
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local swap=$3
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local mtd
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mtd=$(find_mtd_chardev $part)
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[ -n "$mtd" ] || \
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ath9k_eeprom_die "no mtd device found for partition $part"
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ath9k_eeprom_extract_raw $mtd $offset $swap
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}
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ath9k_ubi_eeprom_extract() {
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local part=$1
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local offset=$2
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local swap=$3
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local ubidev=$(nand_find_ubi $CI_UBIPART)
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local ubi
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ubi=$(nand_find_volume $ubidev $part)
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[ -n "$ubi" ] || \
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ath9k_eeprom_die "no UBI volume found for $part"
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ath9k_eeprom_extract_raw /dev/$ubi $offset $swap
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}
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ath9k_patch_fw_mac_crc() {
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local mac=$1
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local mac_offset=$2
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local chksum_offset=$((mac_offset - 10))
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ath9k_patch_fw_mac "${mac}" "${mac_offset}" "${chksum_offset}"
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}
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ath9k_patch_fw_mac() {
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local mac=$1
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local mac_offset=$2
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local chksum_offset=$3
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local xor_mac
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local xor_fw_mac
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local xor_fw_chksum
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[ -z "$mac" -o -z "$mac_offset" ] && return
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[ -n "$chksum_offset" ] && {
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xor_mac=${mac//:/}
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xor_mac="${xor_mac:0:4} ${xor_mac:4:4} ${xor_mac:8:4}"
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xor_fw_mac=$(hexdump -v -n 6 -s $mac_offset -e '/1 "%02x"' /lib/firmware/$FIRMWARE)
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xor_fw_mac="${xor_fw_mac:0:4} ${xor_fw_mac:4:4} ${xor_fw_mac:8:4}"
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xor_fw_chksum=$(hexdump -v -n 2 -s $chksum_offset -e '/1 "%02x"' /lib/firmware/$FIRMWARE)
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xor_fw_chksum=$(xor $xor_fw_chksum $xor_fw_mac $xor_mac)
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printf "%b" "\x${xor_fw_chksum:0:2}\x${xor_fw_chksum:2:2}" | \
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dd of=/lib/firmware/$FIRMWARE conv=notrunc bs=1 seek=$chksum_offset count=2
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}
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macaddr_2bin $mac | dd of=/lib/firmware/$FIRMWARE conv=notrunc bs=1 seek=$mac_offset count=6
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}
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case "$FIRMWARE" in
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"ath9k-eeprom-pci-0000:00:0e.0.bin" | \
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"ath9k-eeprom-pci-0000:01:00.0.bin" | \
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"ath9k-eeprom-pci-0000:02:00.0.bin")
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board=$(lantiq_board_name)
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case "$board" in
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ARV7518PW)
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ath9k_eeprom_extract "boardconfig" 1024 1
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;;
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ARV8539PW22)
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ath9k_eeprom_extract "art" 1024 1
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;;
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BTHOMEHUBV2B)
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ath9k_eeprom_extract "art" 0 1
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ath9k_patch_fw_mac_crc "00:00:00:00:00:00" 524
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;;
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BTHOMEHUBV3A)
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ath9k_eeprom_extract "art-copy" 0 1
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ath9k_patch_fw_mac_crc $(macaddr_add $(mtd_get_mac_ascii uboot-env ethaddr) +2) 268
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;;
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BTHOMEHUBV5A)
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ath9k_ubi_eeprom_extract "caldata" 4096 0
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ath9k_patch_fw_mac_crc $(macaddr_add $(mtd_get_mac_binary_ubi caldata 4364) +2) 268
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;;
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DGN3500*)
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ath9k_eeprom_extract "calibration" 61440 0
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ath9k_patch_fw_mac_crc $(macaddr_add $(mtd_get_mac_ascii uboot-env ethaddr) +2) 524
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;;
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FRITZ3370)
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ath9k_eeprom_extract "urlader" 2437 0
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ath9k_patch_fw_mac "00:00:00:00:00:00" 2
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;;
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FRITZ7320|FRITZ7360SL)
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ath9k_eeprom_extract "urlader" 2437 0
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ath9k_patch_fw_mac_crc "00:00:00:00:00:00" 268
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;;
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TDW8970|TDW8980)
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ath9k_eeprom_extract "boardconfig" 135168 0
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;;
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*)
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ath9k_eeprom_die "board $board is not supported yet"
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;;
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esac
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;;
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esac
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