combine 2 mtds into a single mtd device?

combine 2 mtds into a single mtd device?

[mjabe]

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The follow is my MTD partition:

 +-------------+             

 |    MTD1     | (size 3M)

 +-------------+

 | Bootloader  | (size 128K)

 +-------------+

 |    MTD2     | (size 3M)

 +-------------+

 |    MTD3     |

 +-------------+



How to combine MTD1 and MTD2 into a single mtd device?

So if I have a image(5M), wehn I do "dd" command, mtd driver

will copy 3M into MTD1 and copy 2M into MTD2.

Thanks.

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Re: combine 2 mtds into a single mtd device?

[Kluba, Patrik]

Hi!

Look at drivers/mtdconcat.c. This implements a device concatenation layer.
Every function is included to handle multiple MTD devices as a virtual
one. The virtual device must be created with the exported
mtd_concat_create function, and must be destroyed with the
mtd_concat_destroy after use. This function does not register devices, you
should write a module which calls mtd_concat_create with proper parameters
and registers the newly created device.
For example, drivers/mtd/maps/dilnetpc.c is a good starting point.

--
pajko


On Tue, 09 Nov 2004 16:32:02 +0800, <mjabe@sina.com.tw> wrote:

> The follow is my MTD partition:
>
> How to combine MTD1 and MTD2 into a single mtd device?