| #!/bin/bash |
| # |
| # Copyright (c) 2020 Ampere Computing LLC |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| # Ampere Computing LLC mtjade: UART MUX/DEMUX for CPU0 UART0,1,4 and CPU1 UART1 |
| # Usage: ampere_uartmux_ctrl.sh <CPU UART port number> <UARTx_MODE> |
| # <UARTx_MODE> of 1 sets CPU To BSP |
| # <UARTx_MODE> of 2 sets SCP1 to SI2 |
| source /usr/libexec/kudo-fw/kudo-lib.sh |
| |
| if [ $# -lt 1 ]; then |
| exit 1 |
| fi |
| |
| echo "Ampere UART MUX CTRL UART port $1 to mode" > /dev/ttyS0 |
| |
| case "$1" in |
| ttyS1) |
| set_gpio_ctrl 167 out 1 |
| ;; |
| ttyS3) |
| set_gpio_ctrl 161 out 1 |
| set_gpio_ctrl 183 out 1 |
| set_gpio_ctrl 198 out 0 |
| ;; |
| *) |
| echo "Invalid tty passed to $0. Exiting!" > /dev/ttyS0 |
| ;; |
| esac |