mtd block readonly low level nand driver cramfs

[Max Stirling]

I was looking at the chips folder under MTD and the MTD_ROM flag settings.

I got this idea of having this low level driver code under chips with
the MTD_ROM flag set and mounting this for cramfs.

Please comment, especially folks using the RO FS mounted on flash.

MS

On Jan 24, 2008 3:12 PM, Max Stirling <vicky.irobot at gmail.com> wrote:
> Hi,
>
> This might sound quite basic question. This is the first time I am
> looking into the MTD code so have some really basic questions.
>
> I am trying to mount a read only fs (cramfs) on the flash. Please let me
> know if the following steps are right:
>
> 1. Enabled the following in the Kconfig files
>     CONFIG_MTD_PARITIONS
>     CONFIG_MTD
>     CONFIG_MTD_BLOCK_RO
>     CONFIG_MTD_NAND
>     CONFIG_MTD_NAND_IDS
>
>
> After booting the compiled kernel I am able to see the mtdblock under
> /proc/devices using 31 Major number.
>
> Now for me to mount the cramfs image that is on the flash I need to
> provide the low level nand driver code. This I need to write but before
> starting that can any one point me to a reference nand driver code that
> is used for read only mount? Which functionality would the MTD require
> to be implemented for mounting a cramfs image which is on the flash.
>
> Would appreciate any pointers to how to get started off with this.
>
> thanks in advance for the reply.
>
> M.S
>
>