1#!/bin/bash -eu
2
3function usage()
4{
5    echo "Usage: $(basename "$0") init|reset"
6}
7
8if [ "$#" -ne "1" ] ; then
9    usage
10    exit 1;
11fi
12
13cmd="${1}"
14UART_ROUTING_PATH="/sys/bus/platform/drivers/aspeed-uart-routing/1e78909c.uart-routing"
15
16case "${cmd}" in
17    init)
18        echo -n "uart3" > ${UART_ROUTING_PATH}/uart1
19        echo -n "uart1" > ${UART_ROUTING_PATH}/uart3
20        echo -n "io1"   > ${UART_ROUTING_PATH}/uart4
21        echo -n "uart4" > ${UART_ROUTING_PATH}/io1
22    ;;
23    reset)
24        echo -n "io1"   > ${UART_ROUTING_PATH}/uart1
25        echo -n "io3"   > ${UART_ROUTING_PATH}/uart3
26        echo -n "io4"   > ${UART_ROUTING_PATH}/uart4
27        echo -n "uart1" > ${UART_ROUTING_PATH}/io1
28    ;;
29    *)
30        usage
31        exit 1;
32    ;;
33esac
34