Hi Ilya,
On Wed, Dec 14, 2011 at 10:46 AM, Ilya Yanok yanok@emcraft.com wrote:
Hi Graeme,
On 14.12.2011 03:37, Graeme Russ wrote:
Well, it shouldn't be that hard to get the data written to specific blocks on the dev PC using dd command.
But what about bad blocks?
You don't need to worry much about this. MMC/SD card are not a raw flash devices they contain FTL that handles this internally. See http://www.linux-mtd.infradead.org/doc/ubifs.html#L_raw_vs_ftl for details.
That's why you can use generic filesystems on MMC/SD (neither FAT not EXT2/3/4 is not designed for raw flash).
Thanks, that is good to know - I'll try this out when I get a chance
Nonetheless, I think it will be advantageous to have filesystem write support in U-Boot anyway to allow seamless transfer of data between development mchines, U-Boot and the target OS.
Regards,
Graeme