| #!/bin/bash |
| # |
| # shellcheck disable=SC2046 |
| |
| if [ $# -lt 2 ]; then |
| exit 1 |
| fi |
| |
| case "$1" in |
| 1) GPIO_UARTx_MODE0="uart1-mode0" |
| GPIO_UARTx_MODE1="uart1-mode1" |
| # CPU0 UART0 connects to BMC UART1 |
| CONSOLE_PORT=0 |
| ;; |
| *) echo "Invalid UART port selection" |
| exit 1 |
| ;; |
| esac |
| |
| # Only switch the MUX when there is no active connection. This means we only |
| # switch the MUX before the first session starts and after the last session |
| # closes. We do this by querying number of connected sessions to the socket |
| # of requested console port. |
| # Example format: Accepted: 1; Connected: 1; |
| CONNECTED=$(systemctl --no-pager status obmc-console-ttyS${CONSOLE_PORT}-ssh.socket | grep -w Connected | cut -d ':' -f 3 | tr -d ' ;') |
| if [ ! "$CONNECTED" -le 1 ]; then |
| echo "Please close all connected session to ttyS${CONSOLE_PORT} !" |
| exit 0 |
| fi |
| |
| echo "Ampere UART MUX CTRL UART port $1 to mode $2" |
| |
| case "$2" in |
| # To HDR |
| 1) gpioset $(gpiofind "$GPIO_UARTx_MODE0")=1 |
| gpioset $(gpiofind "$GPIO_UARTx_MODE1")=0 |
| exit 0 |
| ;; |
| # To BMC |
| 2) gpioset $(gpiofind "$GPIO_UARTx_MODE0")=0 |
| gpioset $(gpiofind "$GPIO_UARTx_MODE1")=1 |
| exit 0 |
| ;; |
| *) echo "Invalid UART mode selection" |
| exit 1 |
| ;; |
| esac |