86 lines
3.0 KiB
Bash
86 lines
3.0 KiB
Bash
#!/bin/sh -l
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#===============================================================================
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#
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# 10-atheros_pre-up
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#
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# Copyright (C) 2012 by Digi International Inc.
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# All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License version 2 as published by
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# the Free Software Foundation.
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#
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#
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# !Description: Load Atheros' wireless driver
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#
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#===============================================================================
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set -e
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[ "${IFACE}" != "wlan0" ] && exit 0
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FIRMWARE_DIR="/lib/firmware/ath6k/AR6003/hw2.1.1"
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RAM_DRIVE="/var/run"
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MAC_FILENAME="softmac"
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#
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# Get the wlan MAC address from kernel command line. Use a default
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# value if the address has not been set.
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#
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MAC_ADDR=`cat /proc/cmdline | sed 's/\s/\n/g' | awk '/ethaddr2/ {print}' | sed 's/ethaddr2=//g'`
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if [ -z "${MAC_ADDR}" -o "${MAC_ADDR}" = "00:00:00:00:00:00" ]; then
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MAC_ADDR="00:04:F3:4C:B1:D3"
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fi
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mac1="$(echo ${MAC_ADDR} | cut -d':' -f1)"
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mac2="$(echo ${MAC_ADDR} | cut -d':' -f2)"
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mac3="$(echo ${MAC_ADDR} | cut -d':' -f3)"
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mac4="$(echo ${MAC_ADDR} | cut -d':' -f4)"
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mac5="$(echo ${MAC_ADDR} | cut -d':' -f5)"
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mac6="$(echo ${MAC_ADDR} | cut -d':' -f6)"
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printf "\x${mac1}\x${mac2}\x${mac3}\x${mac4}\x${mac5}\x${mac6}" > ${RAM_DRIVE}/${MAC_FILENAME}
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# We need to write the WLAN MAC address to softmac in the ath6k firmware
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# directory. However, we don't want to rewrite the file if it already exists
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# and the address is the same because we don't want to wear out NAND flash.
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#
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# So create the file on the RAM DRIVE first and compare the two. Only update
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# the copy on NAND if the address has changed.
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#
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if ! cmp -s ${RAM_DRIVE}/${MAC_FILENAME} ${FIRMWARE_DIR}/${MAC_FILENAME}; then
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cp ${RAM_DRIVE}/${MAC_FILENAME} ${FIRMWARE_DIR}/${MAC_FILENAME}
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fi
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rm -f ${RAM_DRIVE}/${MAC_FILENAME}
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# Figure out which wireless region we are in. The US has rules for
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# what channels can be used and at what power level. We use a different set of
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# rules for the other regions in the world that we sell into. The mod_cert field
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# in OTP will be set to 0x0 for the US. Once we know the region, make sure the
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# appropriate calibration file is loaded.
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#
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US_CODE="0x0"
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REGION_CODE="$(cat /sys/kernel/ccardimx28/mod_cert)"
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if [ -z "${REGION_CODE}" -o "${US_CODE}" = "${REGION_CODE}" ]; then
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BDATA_SOURCE=Digi_6203-6233-US.bin
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else
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BDATA_SOURCE=Digi_6203-6233-World.bin
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fi
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# We don't want to rewrite NAND every time we boot so only
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# change the link if it is wrong.
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BDATA_LINK="${FIRMWARE_DIR}/bdata.bin"
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if [ ! -e "${BDATA_LINK}" ] || ! cmp -s "${BDATA_LINK}" "${FIRMWARE_DIR}/${BDATA_SOURCE}"; then
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ln -sf "${BDATA_SOURCE}" "${BDATA_LINK}"
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fi
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# ath6kl_sdio.ko
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ATH6KL_PARAMS=""
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[ -f "/root/wifi_test_mode" ] && { ATH6KL_PARAMS="${ATH6KL_PARAMS} testmode=1"; test_mode_str=" in test mode"; }
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grep -qs ath6kl_sdio /proc/modules || \
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/sbin/modprobe -q ath6kl_sdio ${ATH6KL_PARAMS} || echo "Loading ath6kl_sdio module${test_mode_str}: [FAILED]"
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# Delay required for the interface 'wlan0' to settle down before trying to configure it.
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sleep 0.5
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