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doc/README.serial_multi
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281e00a3b * Code cleanup |
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The support for multiple serial interfaces as implemented is mainly intended to allow for modem dial-in / dial-out while still being able to use a serial console on a (different) serial port. |
ff36fd859 * Patch by Leif L... |
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MPC8XX Specific =============== |
281e00a3b * Code cleanup |
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At the moment, the ports must be split on a SMC and a SCC port on a 8xx processor; other configurations are not (yet) supported. Support for hardware handshake has not been implemented yet (but is in the works). *) The default console depends on the keys pressed: - SMC if keys not pressed (modem not enabled) - SCC if keys pressed (modem enabled) *) The console can be switched to SCC by any of the following commands: setenv stdout serial_scc setenv stdin serial_scc setenv stderr serial_scc *) The console can be switched to SMC by any of the following commands: setenv stdout serial_smc setenv stdin serial_smc setenv stderr serial_smc *) If a file descriptor is set to "serial" then the current serial device will be used which, in turn, can be switched by above commands. *) The baudrate is the same for all serial devices. But it can be switched just after switching the console: setenv sout serial_scc; setenv baudrate 38400 After that press 'enter' at the SCC console. Note that baudrates <38400 |
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are not allowed on LWMON with watchdog enabled (see CONFIG_SYS_BAUDRATE_TABLE in |
281e00a3b * Code cleanup |
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include/configs/lwmon.h). |
ff36fd859 * Patch by Leif L... |
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PPC4XX Specific =============== *) The default console is UART0 *) The console can be switched to UART1 by any of the following commands: setenv stdout serial1 setenv stderr serial1 setenv stdin serial1 *) The console can be switched to UART0 by any of the following commands: setenv stdout serial0 setenv stderr serial0 setenv stdin serial0 |