-# 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_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/$FIRMWARE iflag=skip_bytes bs=$count skip=$offset count=1 2>/dev/null || \
- ath10kcal_die "failed to extract calibration data from $mtd"
-}
-
-ath10kcal_ubi_extract() {
- local part=$1
- local offset=$2
- local count=$3
- local ubidev
- local ubi
-
- . /lib/upgrade/nand.sh
-
- ubidev=$(nand_find_ubi $CI_UBIPART)
- ubi=$(nand_find_volume $ubidev $part)
- [ -n "$ubi" ] || \
- ath10kcal_die "no UBI volume found for $part"
-
- dd if=/dev/$ubi of=/lib/firmware/$FIRMWARE iflag=skip_bytes bs=$count skip=$offset count=1 2>/dev/null || \
- ath10kcal_die "failed to extract from $ubi"
-}
-
-ath10kcal_patch_mac_crc() {
- local mac=$1
- local mac_offset=6
- local chksum_offset=2
- local xor_mac
- local xor_fw_mac
- local xor_fw_chksum
-
- [ -z "$mac" ] && return
-
- 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}"
-
- macaddr_2bin $mac | dd of=/lib/firmware/$FIRMWARE conv=notrunc bs=1 seek=6 count=6
-
- 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
-}
-
-ath10kcal_is_caldata_valid() {
- local expected="$1"
-
- magic=$(hexdump -v -n 2 -e '1/1 "%02x"' /lib/firmware/$FIRMWARE)
- [[ "$magic" == "$expected" ]]
- return $?
-}
-