[En-Nut-Discussion] SAM9260-EK getting started

[Paulo Silva(OpenSoftware)]

Hi Ivan,

I had the same problem.
When I download nut events application using samba it works, but with 
the boostrap it does not.
So Alain and me did changes in that files and events application begin 
to work when loaded from dataflash.

if I understood you are using u-boot, I did not use it.
My boot sequente is:

Romboot
Bootstrap ( I compiled it without a call to u-boot)
Nut events application.

Best regards

PSilva



Ivan Stojiljkovic escreveu:
> Hi all,
>
> I have also similar problem as steve and I have no solution so far. I have
> problem running ethernut applications (on Olimex SAM9-L9260 board).
>
> If I foolow instructions for running events application from ethernut site,
> the results are:
> - using SAM-BA 2.5 - everything runs without any problem (using both "Enable
> SDRAM 100 MHz" and "Enable SDRAM 133 Mhz")
> - using SAM-BA 2.8 - nothing is displayed on debug port (there is only
> "Enable SDRAM" here)
> Something is strange here, I compared SDRAM routines (lot has changed from
> 2.5 to 2.8 version) but could not figure it out what is the difference that
> matters. Also, "getting started" application from Atmel is working in all
> cases, so it seems that SDRAM is initialized properly. (When comparing
> content of SDRAM after downloading application from SAM-BA utilitiy, it
> shows that content of SDRAM is good in all cases).
>
> Now comes the tricky part. I want to boot from dataflash, so there is
> bootstrap and ethernut (events) application on 0x8000 in dataflash.
> - using Atmel's bootstrap (compiling it on my own or using one from
> Linux4Sam) gives me no result, nothing is displayed on debug port (default
> start address 0x23F00000 is taken into account)
> - IMPORTANT: using bootstrap loader from
> http://www.ethernut.de/en/documents/sam-web-radio.html - makes ethernut
> application working. Unfortunatelly, there is only bin file, without source,
> so I can not compare what is changed here (on the sam-web-radio page it says
> that 'Thanks to Atmel France for providing two second stage boot loaders')
> (offtopic - are this second stage loaders?)
>
> I tried PSilva's solution but with no result, thanks for the effort! maybe I
> am doing something wrong.
>
> Also, using u-boot as second stage bootloader and downloading and starting
> ethernut application from it does not work.
>
> Seems like something is realy wrong in crt file, but again - using bootstrap
> from sam-web-radio makes things work. What is the problem here?
>
> Best regards,
> Ivan
>