76 lines
1.7 KiB
Bash
76 lines
1.7 KiB
Bash
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# Copyright (C) 2019 OpenWrt.org
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. /lib/functions.sh
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. /lib/functions/system.sh
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caldata_die() {
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echo "caldata: " "$*"
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exit 1
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}
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caldata_extract() {
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local part=$1
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local offset=$(($2))
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local count=$(($3))
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local mtd
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mtd=$(find_mtd_chardev $part)
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[ -n "$mtd" ] || caldata_die "no mtd device found for partition $part"
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dd if=$mtd of=/lib/firmware/$FIRMWARE iflag=skip_bytes bs=$count skip=$offset count=1 2>/dev/null || \
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caldata_die "failed to extract calibration data from $mtd"
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}
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caldata_extract_ubi() {
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local part=$1
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local offset=$(($2))
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local count=$(($3))
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local ubidev
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local ubi
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. /lib/upgrade/nand.sh
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ubidev=$(nand_find_ubi $CI_UBIPART)
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ubi=$(nand_find_volume $ubidev $part)
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[ -n "$ubi" ] || caldata_die "no UBI volume found for $part"
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dd if=/dev/$ubi of=/lib/firmware/$FIRMWARE iflag=skip_bytes bs=$count skip=$offset count=1 2>/dev/null || \
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caldata_die "failed to extract calibration data from $ubi"
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}
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caldata_extract_reverse() {
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local part=$1
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local offset=$2
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local count=$(($3))
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local mtd
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local reversed
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local caldata
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mtd=$(find_mtd_chardev "$part")
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reversed=$(hexdump -v -s $offset -n $count -e '/1 "%02x "' $mtd)
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for byte in $reversed; do
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caldata="\x${byte}${caldata}"
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done
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printf "%b" "$caldata" > /lib/firmware/$FIRMWARE
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}
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caldata_from_file() {
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local source=$1
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local offset=$(($2))
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local count=$(($3))
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dd if=$source of=/lib/firmware/$FIRMWARE iflag=skip_bytes bs=$count skip=$offset count=1 2>/dev/null || \
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caldata_die "failed to extract calibration data from $source"
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}
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caldata_valid() {
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local expected="$1"
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magic=$(hexdump -v -n 2 -e '1/1 "%02x"' /lib/firmware/$FIRMWARE)
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[[ "$magic" == "$expected" ]]
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return $?
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}
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