Problem with Xilinx Uart Lite
Andrei Konovalov
akonovalov at ru.mvista.com
Fri Jun 30 01:32:47 EST 2006
Qichen Huang wrote:
> Hi all,
>
> I'm trying to port linuxppc_2_4_devel to Xilinx ML403. I want to use
> UartLite instead of Uart 16550. What changes should I do?
>
> I have disabled "Standard/generic (8250/16550 and compatible UARTs)
> serial support"
> and enabled "Xilinx UART Lite" & "Console on UART Lite port" in
> character devices.
> And the initial kernel command string is changed to "console=ttl0
> console=ttyS0,9600 ip=off root=/dev/xsysace/disc0/part3 rw".
This command line sets default console to ttyS0.
Please remove "console=ttyS0,9600".
> The kernel boot log dosen't mention any serial device and it hangs up
> until "System started." There is no login prompt.
Are you using the correct xparameters_*.h - the one having the
#defines for UartLite?
> My /etc/inittab is :
>
> ::sysinit:/etc/init.d/rcS
> #::askfirst:-/bin/sh
> ::ctrlaltdel:/sbin/reboot
> ::shutdown:/sbin/swapoff -a
> ::shutdown:/bin/umount -a -r
> ::restart:/sbin/init
> ::respawn:/sbin/getty 9600 tts/0
>
>
> What else should I do?
> Thank you!
>
> Qichen
>
>
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