Mounting Entire Flash
rahanesh at tataelxsi.co.in
Tue Sep 29 01:00:42 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
How do we achieve this? Should we edit /proc/mtd or
flash/driver code ?
More information about the linux-mtd