X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=doc%2FREADME.serial_multi;h=ad61d4261b66a00564c741db0176ca51ecece408;hb=9c6c5c06764b7762a016b0ede002511139166fee;hp=1d73376b2c7af6ee05018b534093cb6f327595ab;hpb=281e00a3be453a169d854f824a460359d10f92bb;p=oweals%2Fu-boot.git diff --git a/doc/README.serial_multi b/doc/README.serial_multi index 1d73376b2c..ad61d4261b 100644 --- a/doc/README.serial_multi +++ b/doc/README.serial_multi @@ -2,6 +2,8 @@ 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. +MPC8XX Specific +=============== 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. @@ -33,5 +35,46 @@ just after switching the console: setenv sout serial_scc; setenv baudrate 38400 After that press 'enter' at the SCC console. Note that baudrates <38400 -are not allowed on LWMON with watchdog enabled (see CFG_BAUDRATE_TABLE in +are not allowed on LWMON with watchdog enabled (see CONFIG_SYS_BAUDRATE_TABLE in include/configs/lwmon.h). + + +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 + +MPC5xxx Specific +================ + +Up to two PSCs can be used as console. + +Support for hardware handshake has not been implemented yet. + +*) The first (default) console port is defined by: + #define CONFIG_PSC_CONSOLE + +*) The second (alternative) console port is defined by: + #define CONFIG_PSC_CONSOLE2 + +*) Commands to switch to the second console: + setenv stdout serial1 + setenv stderr serial1 + setenv stdin serial1 + +*) Commands to switch to the first console: + setenv stdout serial0 + setenv stderr serial0 + setenv stdin serial0 + +*) If a file descriptor is set to "serial" then the + current serial device will be used.