140 lines
4.8 KiB
Bash
140 lines
4.8 KiB
Bash
#!/bin/sh
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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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[ "${IFACE}" != "wlan0" ] && exit 0
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FIRMWARE_DIR="/lib/firmware/ath6k/AR6003/hw2.1.1"
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ATH6KL_DBG_NONE=0x0
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ATH6KL_DBG_CREDIT=0x00000001
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ATH6KL_DBG_WLAN_TX=0x00000004
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ATH6KL_DBG_WLAN_RX=0x00000008
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ATH6KL_DBG_BMI=0x00000010
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ATH6KL_DBG_HTC=0x00000020
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ATH6KL_DBG_HIF=0x00000040
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ATH6KL_DBG_IRQ=0x00000080
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ATH6KL_DBG_WMI=0x00000400
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ATH6KL_DBG_TRC=0x00000800
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ATH6KL_DBG_SCATTER=0x00001000
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ATH6KL_DBG_WLAN_CFG=0x00002000
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ATH6KL_DBG_RAW_BYTES=0x00004000
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ATH6KL_DBG_AGGR=0x00008000
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ATH6KL_DBG_SDIO=0x00010000
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ATH6KL_DBG_SDIO_DUMP=0x00020000
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ATH6KL_DBG_BOOT=0x00040000
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ATH6KL_DBG_WMI_DUMP=0x00080000
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ATH6KL_DBG_SUSPEND=0x00100000
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ATH6KL_DBG_USB=0x00200000
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ATH6KL_DBG_RECOVERY=0x00400000
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ATH6KL_DBG_ANY=0xffffffff
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ATH6KL_DEBUG_MASK="${ATH6KL_DBG_NONE}"
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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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if [ -f "/proc/device-tree/wireless/mac-address" ]; then
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MAC_ADDR="$(hexdump -ve '1/1 "%02X" ":"' /proc/device-tree/wireless/mac-address | sed 's/:$//g')"
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else
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MAC_ADDR="$(sed -ne 's,^.*ethaddr2=\([^[:blank:]]\+\)[:blank:]*.*,\1,g;T;p' /proc/cmdline)"
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fi
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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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# 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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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 ${MAC_ADDR} | cut -d':' -f6)"
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TMP_MACFILE="$(mktemp -t softmac.XXXXXX)"
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printf "\x${mac1}\x${mac2}\x${mac3}\x${mac4}\x${mac5}\x${mac6}" > ${TMP_MACFILE}
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if ! cmp -s ${TMP_MACFILE} ${FIRMWARE_DIR}/softmac; then
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cp ${TMP_MACFILE} ${FIRMWARE_DIR}/softmac
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fi
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rm -f ${TMP_MACFILE}
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# Figure out which wireless region we are in. The US has rules for
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# what channels can be used and at what power level. We use a different set of
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# rules for the other regions in the world that we sell into. The mod_cert field
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# in OTP will be set to 0x0 for the US. Once we know the region, make sure the
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# appropriate calibration file is loaded.
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#
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MACHINE="$(cat /proc/device-tree/digi,machine,name 2>/dev/null || \
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cat /sys/kernel/machine/name)"
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MOD_VARIANT="$(cat /proc/device-tree/digi,hwid,variant 2>/dev/null || \
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cat /sys/kernel/${MACHINE}/mod_variant)"
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REGION_CODE="$(cat /proc/device-tree/digi,hwid,cert 2>/dev/null || \
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cat /sys/kernel/${MACHINE}/mod_cert)"
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# 'ccimx6sbc' variants 0x05, 0x07 and 0x0a do not have bluetooth
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# and use a different calibration file
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US_CODE="0x0"
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case "${MACHINE}:${MOD_VARIANT}:${REGION_CODE}" in
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ccimx6sbc:0x05:${US_CODE}|ccimx6sbc:0x07:${US_CODE}|ccimx6sbc:0x0a:${US_CODE})
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BDATA_SOURCE="Digi_6203_2_ANT-US.bin"
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logger -t atheros "Setting US wireless region (no bluetooth)";;
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ccimx6sbc:0x05:*|ccimx6sbc:0x07:*|ccimx6sbc:0x0a:*)
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BDATA_SOURCE="Digi_6203_2_ANT-World.bin"
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logger -t atheros "Setting non-US (world) wireless region (no bluetooth)";;
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*:*:${US_CODE})
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BDATA_SOURCE="Digi_6203-6233-US.bin"
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logger -t atheros "Setting US wireless region";;
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*:*:*)
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BDATA_SOURCE="Digi_6203-6233-World.bin"
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logger -t atheros "Setting non-US (world) wireless region";;
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esac
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# We don't want to rewrite NAND every time we boot so only
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# change the link if it is wrong.
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BDATA_LINK="${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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# Load 'cfg80211' and let it settle down (needed by 'ath6kl_sdio')
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modprobe -q cfg80211 && sleep 0.2
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# ath6kl_sdio.ko
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if ! grep -qs ath6kl_sdio /proc/modules; then
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RETRIES="5"
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while [ "${RETRIES}" -gt "0" ]; do
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modprobe --ignore-install -q ath6kl_sdio debug_mask="${ATH6KL_DEBUG_MASK}" || true
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[ -d "/sys/class/net/wlan0" ] && break
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RETRIES="$((RETRIES - 1))"
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rmmod ath6kl_sdio > /dev/null
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echo "Retrying to load wireless"
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sleep 2
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done
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[ "${RETRIES}" -eq "0" ] && echo "Loading ath6kl_sdio module: [FAILED]"
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fi
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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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