[U-Boot-Users] [PATCH] Write YAFFS filesystem images to NAND

[Blair Barnett]

Hi Frank,

You can run yaffs2 in yaffs1 compatibility mode. 
Check the yaffs2 source for the correct configuration options.

-blair

On Thu, 2006-09-07 at 11:46, Frank Mandarino wrote:
> Hi,
> 
> The attached patch for common/cmd_nand.c provides the ability to write
> YAFFS filesystem images to NAND flash memory, using the newer MTD-based
> nand code.
> 
> The patch extends the nand write command to parse a ".yaffs1" suffix for
> yaffs1 filesystems, or a ".yaffs" or ".yaffs2" suffix for yaffs2
> filesystems.
> 
> Yaffs1 filesystems support 512-byte page, 16-byte oob NAND chips, while
> yaffs2 filesystems support 2048-byte page, 64-byte oob NAND chips.
> 
> Yaffs1 filesystem images can be generated using the mkyaffsimage utility
> in the yaffs2/utils directory.
> 
> Yaffs2 filesystem images can be generated using the mkyaffs2image
> utility in the yaffs2/utils directory, after applying Sergey Kubushyn's
> patch.  See
> http://aleph1.co.uk/lurker/message/20060211.004601.77b55bf3.en.html.
> 
> So, for example, to write a yaffs1 filesystem image of length 0x526320
> from address 0x20000000 in ram to offset 0x100000 in flash, run the command:
> 
>    nand write.yaffs1 20000000 100000 526320
> 
> The area to be written must be erased before writing the filesystem.
> 
> I have tested this code with yaffs1 filesystems, and, in fact, I am
> finally able to run Linux with rootfstype=yaffs.  I am unable to test
> with yaffs2 filesystems because I don't have access to a system using
> 2048+64 NAND chips.
> 
> Regards,
> ../fam