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.
7 At the moment, the ports must be split on a SMC and a SCC port on a
8 8xx processor; other configurations are not (yet) supported.
10 Support for hardware handshake has not been implemented yet (but is
13 *) The default console depends on the keys pressed:
14 - SMC if keys not pressed (modem not enabled)
15 - SCC if keys pressed (modem enabled)
17 *) The console can be switched to SCC by any of the following commands:
19 setenv stdout serial_scc
20 setenv stdin serial_scc
21 setenv stderr serial_scc
23 *) The console can be switched to SMC by any of the following commands:
25 setenv stdout serial_smc
26 setenv stdin serial_smc
27 setenv stderr serial_smc
29 *) If a file descriptor is set to "serial" then the current serial device
30 will be used which, in turn, can be switched by above commands.
32 *) The baudrate is the same for all serial devices. But it can be switched
33 just after switching the console:
35 setenv sout serial_scc; setenv baudrate 38400
37 After that press 'enter' at the SCC console. Note that baudrates <38400
38 are not allowed on LWMON with watchdog enabled (see CFG_BAUDRATE_TABLE in
39 include/configs/lwmon.h).
44 *) The default console is UART0
46 *) The console can be switched to UART1 by any of the following commands:
51 *) The console can be switched to UART0 by any of the following commands:
59 Up to two PSCs can be used as console.
61 Support for hardware handshake has not been implemented yet.
63 *) The first (default) console port is defined by:
64 #define CONFIG_PSC_CONSOLE <PSC number>
66 *) The second (alternative) console port is defined by:
67 #define CONFIG_PSC_CONSOLE2 <PSC number>
69 *) Commands to switch to the second console:
74 *) Commands to switch to the first console:
79 *) If a file descriptor is set to "serial" then the
80 current serial device will be used.