Re: [microblaze-uclinux] 16550 uart console stays blank

[Michal Simek <michal.simek@xxxxxxxxxxxxx>]

Hi Marco,

hoefle marco wrote:
> Hi Michal,
> thank you for your reply. The ref design worked and now the target
> design works as well. I think I forgot a make clean or something.
> I have no real explanation but I am happy :-)

I think you find a proper explanation. There is necessary to do proper clean
if you change a board. I personally prefer make mrproper.

I am happy that you confirm me that uart16550 works well.

Thanks,
Michal

> Regards,
> Marco
> 
> 
> On Tue, 2009-07-21 at 14:51 +0200, Michal Simek wrote:
>> Hi,
>>
>> I have just tested it on ml505 uart16550 and latest petalinux svn-head and works well.
>> Some thing to check:
>> command line: console=ttyS0,11500
>>
>> and /etc/inittab
>> ttyS0:vt100:/bin/agetty 115200 ttyS0
>>
>> Just create new ref design with uart16550, create new platform and recompile.
>>
>> I did checking with fs-boot and u-boot at first to see that my cable/terminal works.
>>
>> Regards,
>> Michal
>>
>>
>>
>> hoefle marco wrote:
>>> Hello,
>>> I want to evaluate the 16550 uart core. I changed the .config of the
>>> kernel as described here:
>>> http://developer.petalogix.com/wiki/UserGuide/AdvancedTopics/Using16550Uart
>>>
>>> When booting the console stays blank but telnet works after a while. The
>>> relevant /proc/kmesg output is:
>>> <6>Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing
>>> disabled
>>>
>>> The difference is that 
>>> serial8250.0: ttyS0 at MMIO 0x83e01003 (irq = 3) is a 16550A
>>>
>>> is missing. The autoconf.h file has been processed correctly by the petalogix scripts as all the relevant #defines are there.
>>>
>>> Has anybody a hint what I am missing?
>>> Thanks,
>>> Marco
>>>
>>>
>>>
>>>
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>>>
>>>
> 
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> 
> 

-- 
Michal Simek, Ing. (M.Eng)
PetaLogix - Linux Solutions for a Reconfigurable World
w: www.petalogix.com p: +61-7-30090663,+42-0-721842854 f: +61-7-30090663
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