| wdenk | 7ac1610 | 2004-08-01 22:48:16 +0000 | [diff] [blame] | 1 | The support for multiple serial interfaces as implemented is mainly |
| 2 | intended to allow for modem dial-in / dial-out while still being able |
| 3 | to use a serial console on a (different) serial port. |
| 4 | |
| 5 | At the moment, the ports must be split on a SMC and a SCC port on a |
| 6 | 8xx processor; other configurations are not (yet) supported. |
| 7 | |
| 8 | Support for hardware handshake has not been implemented yet (but is |
| 9 | in the works). |
| 10 | |
| 11 | *) The default console depends on the keys pressed: |
| 12 | - SMC if keys not pressed (modem not enabled) |
| 13 | - SCC if keys pressed (modem enabled) |
| 14 | |
| 15 | *) The console can be switched to SCC by any of the following commands: |
| 16 | |
| 17 | setenv stdout serial_scc |
| 18 | setenv stdin serial_scc |
| 19 | setenv stderr serial_scc |
| 20 | |
| 21 | *) The console can be switched to SMC by any of the following commands: |
| 22 | |
| 23 | setenv stdout serial_smc |
| 24 | setenv stdin serial_smc |
| 25 | setenv stderr serial_smc |
| 26 | |
| 27 | *) If a file descriptor is set to "serial" then the current serial device |
| 28 | will be used which, in turn, can be switched by above commands. |
| 29 | |
| 30 | *) The baudrate is the same for all serial devices. But it can be switched |
| 31 | just after switching the console: |
| 32 | |
| 33 | setenv sout serial_scc; setenv baudrate 38400 |
| 34 | |
| 35 | After that press 'enter' at the SCC console. Note that baudrates <38400 |
| 36 | are not allowed on LWMON with watchdog enabled (see CFG_BAUDRATE_TABLE in |
| 37 | include/configs/lwmon.h). |