[En-Nut-Discussion] Olimex SAM9-L9260 board

[Ole Reinhardt]

Hi Ernst,

> > I recently purchased an Olimex SAM9-L9260 board. I comes preloaded with
> > embedded Linux, but I want to run Nut/OS on it.
> > When powering on, the board activates its AT91Bootstrap which in turn starts
> > U-Boot:
> 
> I don't think u-boot can load elf files directly, or Nut/OS binaries.
> You could check u-boot documentation to see how to make your binary
> compatible with u-boot. I guess it will need to link to some lib from
> u-boot and use the u-boot's mkimage tool.

U-Boot _can_ load binary files as well as elf files. At least my u-boot
port for ethernut5 can do so.

Even if I own an SAM9-l9260 board, I did not yet tried NutOS on it very
extensive.

On the ethernut5 I just use

tftpboot 0x20000000 /tftpboot/enut.bin 
go 0x20000000

For the ethernut5 u-boot I've implemented this as as small u-boot script
which can be automaticaly run on a boot.

You basicaly did the same. So I'd first check, if you use the correct
UART for debug output (DEV_UARTx, DEV_DEBUG?).

Have you just checked with 

arm-elf-objdump -h enut.elf

if the code was correctly linked to 0x20000000 as base address?

Do you have the possebility to use OpenOCD / JTAG? You can set a
breakpoint at 0x20000000 and step into your code.

If you don't get it running, drop me a mail and I'll try it on my own
Olimex board.

Bye,

Ole

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