linux 2.6 hangs at __delay function on Viretx 4 board

[Howard, Marc]

Every year at the Embedded Systems Conference I would complain to the
Xilinix folks about the 16550 not being free.  This year I complained &
they told me that even though it is listed as a purchased core when you
go to "buy" it you get it for free.  This was just prior to the 10.x
release.

Marc W Howard 

> -----Original Message-----
> From: 
> linuxppc-embedded-bounces+marc.howard=kla-tencor.com at ozlabs.or
g [mailto:linuxppc-embedded-bounces+marc.howard=kla->
tencor.com at ozlabs.org] On Behalf Of John Linn
> Sent: Wednesday, June 04, 2008 2:23 PM
> To: Peter Korsgaard; swamydp
> Cc: linuxppc-embedded at ozlabs.org
> Subject: RE: linux 2.6 hangs at __delay function on Viretx 4 board
> 
> Hi Peter,
> 
> Yes you need to enable UARTLITE as the console in the kernel
> configuration.
> 
> You have the command line syntax, ttyUL0, correct.
> 
> They have now changed the UART 16550 to be a free core in the EDK, not
> sure which version of the EDK that happened.
> 
> Thanks,
> John
> 
> -----Original Message-----
> From: linuxppc-embedded-bounces+john.linn=xilinx.com at ozlabs.org
> [mailto:linuxppc-embedded-bounces+john.linn=xilinx.com at ozlabs.org] On
> Behalf Of Peter Korsgaard
> Sent: Wednesday, June 04, 2008 2:56 AM
> To: swamydp
> Cc: linuxppc-embedded at ozlabs.org
> Subject: Re: linux 2.6 hangs at __delay function on Viretx 4 board
> 
> >>>>> "swamydp" == swamydp  <swamydp at gmail.com> writes:
> 
>  swamydp> Hi John
> 
>  swamydp> I am using UARTLITE as serial console. I do not have license
>  swamydp> for UART 16550.  I have enabled the drivers for uartlite in
>  swamydp> menuconfig while configuring the kernel. I have tested all
>  swamydp> combinations for the kernel command line - tty0, ttyUL0,
>  swamydp> ttyl0, ttyS0 but could not get uartlite to output kernel
>  swamydp> printk messages.
> 
> Correct syntax is console=ttyUL0
> 
>  swamydp> Since I am using uartlite , the following settings are
>  swamydp> turned off in menuconfig
> 
>  swamydp> CONFIG_SERIAL_8250=n
>  swamydp> CONFIG_SERIAL_8250_CONSOLE=n
> 
> Do you have console on uartlite (CONFIG_SERIAL_UARTLITE_CONSOLE)
> enabled?
> 
> -- 
> Bye, Peter Korsgaard
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