Mounting Entire Flash
dmcleod at bittware.com
Thu Sep 24 09:05:15 EDT 2009
On Thu, 2009-09-24 at 15:44 +0530, Rahanesh wrote:
> Hi All,
> Currently I have 4 mtd partitions in Flash. They are all seen under /dev
> directory as mtd0 mtd1 mtd2 and mtd3.
> mtd0-> Uboot + Itz Environment
> mtd1-> JFFS
> mtd2-> Config files
> mtd3-> Not used
> I am currently trying to implement Image upgradation.
> I will need to update JFFS, uboot and Config files from Linux.
> I am currently achieving this through flash_eraseall and dd command .
> To Update U-boot First i will do a
> flash_eraseall /dev/mtd0 and then
> dd if=uboot.bin of=/dev/mtd0 count=size;
> and similarly for all individual partitions.
> But If i have a combined image as combined.bin how do i update the
> entire flash .
> Is it possible to see entire flash as /dev/mtd . i can very well
> extract individual images from combined image and reflash to respective
> But it would be generic if we are able write to entire flash not to
> individual partitions.
> Is it possible to Write to entire flash as such.
I always set up a partition that spans the entire flash chip..
mtd0 -> 0:ENTIRE_SIZE
mtd1 -> 0:+10M
mtd2 -> 10M:22M
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