Hi Ash,

Although we are moving to UBIFS for the new branch,
would you mind update the script in the website
http://www.gumstix.org/how-to/70-writing-images-to-flash.html

to amend the portion regarding the JFFS2 so as to have a closure for future reference and new users.

A reference to Steve's page for writing UBI format will be very helpful too.

No obligation.

Cheers~!

James.

On Wed, Aug 17, 2011 at 5:45 PM, JamesAng <angweiyang@gmail.com> wrote:


JamesAng wrote:
>
> Hi Ash,
>
> I found out that the mkfs.jffs2 instruction is wrong. (or I might be the
> one.. :confused:)
>
> It seems that mkfs.jffs2 requires a -r <rootfs> parameter else, it will
> use the current directory which cause the ghosting effect. mkfs.jffs2 -r
> <rootfs> -e <erase size in KB> -o <output file>
>
> Also, there is a duplication of instructions in the script.
> I read from TI Wiki at
> http://processors.wiki.ti.com/index.php/Put_JFFS2_Image_to_Flash#Writing_Flash_from_Linux
> http://processors.wiki.ti.com/index.php/Put_JFFS2_Image_to_Flash  that
> using 'flash_erase -j /dev/mtd4 0 0' will format the NAND for JFFS2.
>
> Afterwhich is to mount mtdblock4 and untar the tarball directly to the
> mount point.
>
> Looking at both option, I think using the flash_erase might be better and
> safer to write the rootfs to NAND.
>
> I intend to try out the 2nd option.
>
> For your consideration.
>
> TIA.
>
> James.
>

The 2nd option works out well for me.

I modified the script from the site and remove the mkfs.jffs2 instruction
and uses flash_erase -j instead.

Maybe it is better to update the webpage for this.

Cheers~!

James.
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Regards,
James