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#!/bin/bash
# this script uses devmem to set hardware passthrough
# it is temporary and should be removed in the future
PASSTHROUGH_ENABLE=0x3000
if [[ -z $1 ]]; then
echo "First Argument Must Be 1 To Enable or 0 To Disable"
exit 1
fi
if [[ $1 != "0" && $1 != "1" ]]; then
echo "Arg 1 must be 0 or 1"
exit 1
fi
# read register
var=$(devmem 0x1e6e208C w)
# convert to int
typeset -i value=$( echo $(( $var )) )
if [[ $1 == "0" ]]; then
value=$((value & ~PASSTHROUGH_ENABLE))
fi
if [[ $1 == "1" ]]; then
value=$((value | PASSTHROUGH_ENABLE))
fi
val=$(printf '0x%x\n' $value)
#echo $val
devmem 0x1e6e208C w $val
# devmem 0x1e6e208C w
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