Re: Mounting Entire Flash

[Dennis McLeod <dmcleod@bittware.com>]

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 
> partitions.
> 
> 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.
> 
> Thanks
> Rahanesh

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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= Dennis McLeod                   =
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