OpenWrt – Rev 1

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#!/bin/sh

. /lib/functions/k2t.sh

# xor multiple hex values of the same length
xor() {
        local val
        local ret="0x$1"
        local retlen=${#1}

        shift
        while [ -n "$1" ]; do
                val="0x$1"
                ret=$((ret ^ val))
                shift
        done

        printf "%0${retlen}x" "$ret"
}

ath10kcal_die() {
        echo "ath10cal: " "$*"
        exit 1
}

ath10kcal_from_file() {
        local source=$1
        local offset=$2
        local count=$3

        dd if=$source of=/lib/firmware/$FIRMWARE bs=1 skip=$offset count=$count 2>/dev/null || \
                ath10kcal_die "failed to extract calibration data from $source"
}

ath10kcal_extract() {
        local part=$1
        local offset=$2
        local count=$3
        local mtd

        mtd=$(find_mtd_chardev $part)
        [ -n "$mtd" ] || \
                ath10kcal_die "no mtd device found for partition $part"

        dd if=$mtd of=/lib/firmware/$FIRMWARE bs=1 skip=$offset count=$count 2>/dev/null || \
                ath10kcal_die "failed to extract calibration data from $mtd"
}

ath10kcal_patch_mac() {
        local mac=$1

        [ -z "$mac" ] && return

        macaddr_2bin $mac | dd of=/lib/firmware/$FIRMWARE conv=notrunc bs=1 seek=6 count=6
}

ath10kcal_patch_mac_crc() {
        local mac=$1
        local mac_offset=6
        local chksum_offset=2
        local xor_mac
        local xor_fw_mac
        local xor_fw_chksum

        xor_fw_mac=$(hexdump -v -n 6 -s $mac_offset -e '/1 "%02x"' /lib/firmware/$FIRMWARE)
        xor_fw_mac="${xor_fw_mac:0:4} ${xor_fw_mac:4:4} ${xor_fw_mac:8:4}"

        ath10kcal_patch_mac "$mac" && {
                xor_mac=${mac//:/}
                xor_mac="${xor_mac:0:4} ${xor_mac:4:4} ${xor_mac:8:4}"

                xor_fw_chksum=$(hexdump -v -n 2 -s $chksum_offset -e '/1 "%02x"' /lib/firmware/$FIRMWARE)
                xor_fw_chksum=$(xor $xor_fw_chksum $xor_fw_mac $xor_mac)

                printf "%b" "\x${xor_fw_chksum:0:2}\x${xor_fw_chksum:2:2}" | \
                        dd of=/lib/firmware/$FIRMWARE conv=notrunc bs=1 seek=$chksum_offset count=2
        }
}

[ -e /lib/firmware/$FIRMWARE ] && exit 0

. /lib/functions.sh
. /lib/functions/system.sh

board=$(board_name)

case "$FIRMWARE" in
"ath10k/cal-pci-0000:00:00.0.bin")
        case $board in
        devolo,dvl1200e|\
        devolo,dvl1200i|\
        devolo,dvl1750c|\
        devolo,dvl1750e|\
        devolo,dvl1750i)
                ath10kcal_extract "art" 20480 2116
                ath10kcal_patch_mac_crc $(macaddr_add $(mtd_get_mac_binary art 0) -1)
                ;;
        dlink,dir-859-a1)
                ath10kcal_extract "art" 20480 2116
                ath10kcal_patch_mac $(mtd_get_mac_ascii devdata "wlan5mac")
                ;;
        elecom,wrc-1750ghbk2-i)
                ath10kcal_extract "ART" 20480 2116
                ;;
        engenius,ews511ap|\
        glinet,gl-ar750s|\
        glinet,gl-x750|\
        tplink,re450-v2)
                ath10kcal_extract "art" 20480 2116
                ath10kcal_patch_mac $(macaddr_add $(cat /sys/class/net/eth0/address) +1)
                ;;
        iodata,wn-ac1167dgr|\
        iodata,wn-ac1600dgr2)
                ath10kcal_extract "art" 20480 2116
                ath10kcal_patch_mac $(macaddr_add $(mtd_get_mac_ascii u-boot-env ethaddr) +1)
                ;;
        nec,wg800hp)
                ath10kcal_extract "art" 20480 2116
                ath10kcal_patch_mac_crc $(mtd_get_mac_text board_data 2176)
                ;;
        ocedo,koala)
                ath10kcal_extract "art" 20480 2116
                ath10kcal_patch_mac $(mtd_get_mac_binary art 12)
                ;;
        openmesh,om5p-ac-v2)
                ath10kcal_extract "ART" 20480 2116
                ath10kcal_patch_mac $(macaddr_add $(cat /sys/class/net/eth0/address) +16)
                ;;
        tplink,archer-c2-v3)
                ath10kcal_extract "ART" 20480 2116
                ath10kcal_patch_mac $(macaddr_add $(cat /sys/class/net/eth0/address) -1)
                ;;
        tplink,archer-c5-v1|\
        tplink,archer-c7-v2)
                ath10kcal_extract "art" 20480 2116
                ath10kcal_patch_mac $(macaddr_add $(cat /sys/class/net/eth1/address) -1)
                ;;
        tplink,archer-a7-v5|\
        tplink,archer-c7-v4|\
        tplink,archer-c7-v5)
                ath10kcal_extract "art" 20480 2116
                ath10kcal_patch_mac $(macaddr_add $(cat /sys/class/net/eth0/address) -1)
                ;;
        ubnt,unifiac-lite|\
        ubnt,unifiac-mesh|\
        ubnt,unifiac-mesh-pro|\
        ubnt,lap-120|\
        ubnt,nanostation-ac|\
        ubnt,nanostation-ac-loco|\
        ubnt,unifiac-pro)
                ath10kcal_extract "EEPROM" 20480 2116
                ;;
        esac
        ;;
"ath10k/pre-cal-pci-0000:00:00.0.bin")
        case $board in
        phicomm,k2t)
                ath10kcal_extract "art" 20480 12064
                ath10kcal_patch_mac_crc $(k2t_get_mac "5g_mac")
                ln -sf /lib/firmware/ath10k/pre-cal-pci-0000\:00\:00.0.bin \
                        /lib/firmware/ath10k/QCA9888/hw2.0/board.bin
                ;;
        tplink,archer-c58-v1|\
        tplink,archer-c59-v1|\
        tplink,archer-c6-v2)
                ath10kcal_extract "art" 20480 12064
                ath10kcal_patch_mac_crc $(macaddr_add $(mtd_get_mac_binary mac 8) -1)
                ln -sf /lib/firmware/ath10k/pre-cal-pci-0000\:00\:00.0.bin \
                        /lib/firmware/ath10k/QCA9888/hw2.0/board.bin
                ;;
        esac
        ;;
*)
        exit 1
        ;;
esac