[U-Boot] [PATCH v2 3/4] ARM: atmel: at91sam9x5ek: enable spl support

[Eugen.Hristev at microchip.com]

On 19.02.2019 15:27, Stefan Roese wrote:
> Hi Eugene,
> Hi Bo,
> 
> On 27.03.15 07:23, Bo Shen wrote:
>> Enable SPL support for at91sam9x5ek board. Now, it supports
>> boot up from NAND flash and SPI flash.
>>
>> Signed-off-by: Bo Shen <voice.shen at atmel.com>
> 
> Sorry to hijack this thread, but I do have a few questions here.
> 
> I'm currently working on a mainline port for a custom board
> based on the CORE9G25 SoM [1] and would like to use U-Boot SPL
> instead of AT91Bootstrap. In this email, you "enable spl support"
> as stated in the commit subject, but CONFIG_SPL is not enabled
> for this board at any time. So only the code is present to e.g.
> init the DDR2 but its actually not executed. Or am I missing
> something here.
> 
> Could you please let me know, what the status of this SPL
> support for the AT91SAM9X5 is? Has this been tested without
> AT91Bootstrap lately?


Hi,

I did not test myself the SPL for any 9x5 board. The DDR2 init code 
should be executed inside the SPL. Once you build your board with a 
CONFIG_SPL enabled, you should get the spl binary built, then you can 
add both SPL + U-boot proper on the boot media and have SPL boot 
(execute DDR init code and load U-boot proper). I would suggest to try 
on Sd-card first because it's easier (filesystem), but the commit says 
only SPI and NAND tested.
You can also look at the U-boot version which first included this patch, 
some things may have changed since...

Let me know of your findings. I will let you know if I have the chance 
to test this myself.

Eugen
> 
> Thanks,
> Stefan
> 
> [1] www.armdevs.com/CORE9G25.html
> 
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