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e1ba59ea5c
Reading and writing to and from flash storage is slowed down
enormously by some functions which use a block size of 1.
This patch reworks the extraction scripts to be much faster and
efficient by reading and writing in possibly one big block.
This is based on the initial commit a69e101 for ipq40xx by
Christian Lamparter <chunkeey@gmail.com>.
Speed comparison @ UBNT AC-Mesh (just manually) results
in a time reduction by three orders of magnitude (99.9 %).
> time dd if=/dev/mtd6 of=/lib/firmware/test-slow bs=1 count=4096 skip=4096
4096+0 records in
4096+0 records out
real 0m 16.84s
user 0m 0.07s
sys 0m 13.54s
> time dd if=/dev/mtd6 of=/lib/firmware/test-fast bs=4096 count=1 skip=4096 iflag=skip_bytes
1+0 records in
1+0 records out
real 0m 0.02s
user 0m 0.00s
sys 0m 0.02s
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Tested-by: Rosen Penev <rosenp@gmail.com>
223 lines
4.9 KiB
Bash
223 lines
4.9 KiB
Bash
#!/bin/sh
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[ -e /lib/firmware/$FIRMWARE ] && exit 0
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. /lib/functions.sh
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. /lib/functions/system.sh
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ath9k_eeprom_die() {
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echo "ath9k eeprom: " "$*"
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exit 1
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}
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ath9k_eeprom_extract() {
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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" ] || \
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ath9k_eeprom_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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ath9k_eeprom_die "failed to extract from $mtd"
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}
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ath9k_eeprom_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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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_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 oflag=seek_bytes bs=6 seek=$mac_offset count=1
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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}" "${chksum_offset}"
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}
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board=$(board_name)
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case "$FIRMWARE" in
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"ath9k-eeprom-ahb-18100000.wmac.bin")
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case $board in
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avm,fritz4020)
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ath9k_eeprom_extract_reverse "urlader" 5441 1088
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;;
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dlink,dir-825-c1|\
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dlink,dir-835-a1)
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ath9k_eeprom_extract "art" 4096 1088
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ath9k_patch_fw_mac_crc $(mtd_get_mac_text "mac" 4) 2
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;;
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dlink,dir-859-a1)
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ath9k_eeprom_extract "art" 4096 1088
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ath9k_patch_fw_mac $(mtd_get_mac_ascii devdata "wlan24mac") 2
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;;
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engenius,epg5000|\
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iodata,wn-ac1167dgr|\
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iodata,wn-ac1600dgr|\
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iodata,wn-ac1600dgr2|\
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iodata,wn-ag300dgr)
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ath9k_eeprom_extract "art" 4096 1088
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ath9k_patch_fw_mac $(mtd_get_mac_ascii u-boot-env ethaddr) 2
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;;
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nec,wg800hp)
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ath9k_eeprom_extract "art" 4096 1088
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ath9k_patch_fw_mac $(mtd_get_mac_text board_data 1664) 2
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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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"ath9k-eeprom-pci-0000:00:00.0.bin")
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case $board in
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avm,fritz300e)
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ath9k_eeprom_extract_reverse "urloader" 5441 1088
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;;
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buffalo,whr-g301n|\
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buffalo,wzr-hp-g302h-a1a0|\
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tplink,tl-wr841-v5|\
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tplink,tl-wr941-v4)
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ath9k_eeprom_extract "art" 4096 3768
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;;
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buffalo,wzr-hp-g450h)
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ath9k_eeprom_extract "ART" 4096 1088
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;;
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dlink,dir-825-c1|\
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dlink,dir-835-a1)
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ath9k_eeprom_extract "art" 20480 1088
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ath9k_patch_fw_mac_crc $(macaddr_add $(mtd_get_mac_text "mac" 24) 1) 2
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;;
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ocedo,raccoon|\
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tplink,tl-wdr3600|\
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tplink,tl-wdr4300|\
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tplink,tl-wdr4900-v2|\
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winchannel,wb2000)
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ath9k_eeprom_extract "art" 20480 1088
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;;
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netgear,wnr612-v2|\
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on,n150r|\
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pcs,cap324|\
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tplink,tl-mr3220-v1|\
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tplink,tl-mr3420-v1|\
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tplink,tl-wr2543-v1|\
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tplink,tl-wr740n-v1|\
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tplink,tl-wr740n-v3|\
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tplink,tl-wr741-v1|\
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tplink,tl-wr743nd-v1|\
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tplink,tl-wr841-v7|\
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tplink,tl-wr842n-v1|\
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ubnt,airrouter|\
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ubnt,bullet-m|\
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ubnt,nano-m|\
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ubnt,rocket-m)
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ath9k_eeprom_extract "art" 4096 4096
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;;
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pqi,air-pen)
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ath9k_eeprom_extract "art" 4096 2002
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;;
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ubnt,unifi)
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ath9k_eeprom_extract "art" 4096 2048
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;;
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wd,mynet-wifi-rangeextender)
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ath9k_eeprom_extract "art" 4096 4096
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ath9k_patch_fw_mac_crc $(nvram get wl0_hwaddr) "$mac" 2
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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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"ath9k-eeprom-pci-0000:00:11.0.bin")
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case $board in
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buffalo,wzr-hp-ag300h|\
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netgear,wndr3700|\
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netgear,wndr3700v2|\
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netgear,wndr3800)
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ath9k_eeprom_extract "art" 4096 3768
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;;
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dlink,dir-825-b1)
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ath9k_eeprom_extract "caldata" 4096 3768
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ath9k_patch_fw_mac_crc $(mtd_get_mac_text "caldata" 65440) 524
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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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"ath9k-eeprom-pci-0000:00:12.0.bin")
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case $board in
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buffalo,wzr-hp-ag300h|\
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netgear,wndr3700|\
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netgear,wndr3700v2|\
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netgear,wndr3800)
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ath9k_eeprom_extract "art" 20480 3768
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;;
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dlink,dir-825-b1)
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ath9k_eeprom_extract "caldata" 20480 3768
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ath9k_patch_fw_mac_crc $(macaddr_add $(mtd_get_mac_text "caldata" 65460) 1) 524
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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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