Dear Valerio Bardelli,
In message 4DBA7D2E.5000101@microhard.biz you wrote:
we have a board based on AT91SAM9263 (Atmel) CPU and we use your U-Boot to debug the hardware and to boot OpenEmbedded Linux. Very good free product! ;))
The at91sam9263ek board is supported in Mainline U-Boot, but this does not appear to contain any MMC support.
In our board we have also a micro SD card reader and we would test it in U-Boot. Over the internet I see that in "some" U-Boot there are "mmcinit" and "fatload" commands, but I'm not be able to reach it in your U-Boot and also in your documentation. Is there any possibility to use the micro SD in your U-Boot?
You will have to add / adapt the MMC drivers.
The version is (result of ver command): U-Boot 2009.06 (gen 20 2010 - 16:17:59)
Ouch. That's very old, and very likely an out-of-tree port. So you will probably have to start with bringing your board support up to date and based on a mainline U-Boot version.
Just another question... we need to boot from our micro SD and reach the U-Boot (from Micro SD) in order to write the NAND for the first time after board production. We are able to boot from SD card with AT91Bootstrap, but is there the possibility to run also the U-Boot from the SD?
Yes, this is possible. It will require some work, though.
Best regards,
Wolfgang Denk