[U-Boot] Question about dfu flash rootfs image

[Bo Shen <voice.shen@atmel.com>]

Hi Heiko,

On 10/14/2013 13:43, Heiko Schocher wrote:
> Hello Bo,
>
> Am 12.10.2013 09:18, schrieb Bo Shen:
>> Hi All,
>> Now I am implementing DFU support on Atmel sama5d3xek board, when try
>> to download rootfs image to NAND flash through DFU, we need to drop
>> ffs from rootfs image.
>
> Do you use ubi or jffs2?

I tested with both ubi and jffs2 in raw mode.

>> In dfu_nand.c when it call nand_write_skip_bad() with flags as 0.
>> However, I need to call nand_write_skip_bad() with flags at least with
>> WITH_DROP_FFS set.
>>
>> Till now, I don't find any good solution to pass the parameter, except
>> hard code it or through "#ifdef CONFIG_CMD_NAND_TRIMFFS" to set it.
>> Any suggestions for it and any other solution?
>
> There was a discussion, how to reorganize the dfu_alt_info var, see:
>
> http://lists.denx.de/pipermail/u-boot/2013-July/158920.html
>
> I think, your question fits into this thread ...
>
> Currently, I think, you should add in
> drivers/dfu/dfu_nand.c:dfu_fill_entity_nand()
>
> a new "partdropffs" ? string, and set a marker like for "partubi"
> the dfu->data.nand.ubi var, and use this marker, where you need it ...

OK, I will wait the final decision.
Maybe for raw and ubi both need this option.

> bye,
> Heiko

Best Regards,
Bo Shen