Initialising NAND OOB with Software ECC

[Phil Thompson]

On Friday 14 February 2003 1:02 pm, Thomas Gleixner wrote:
> On Friday 14 February 2003 12:36, Phil Thompson wrote:
> > What about the other elements of struct mtd_oob_buf, ie. start and ptr?
>
> Ok, I forgot start.
>
> > What about a pointer to the oob buffer?
>
> I see, we need data too. :)
> But then we should add two pointers, so you can hold two different buffers
> from userspace.
> truct nand_ctrl {
> 	int	start;			// startadress
> 	int	oob_select;	// selector for OOB usage
>  	int	data_lenght;	// length of data
>  	int	oob_length;	// length of oob-buffer
> 	int	data_ptr;		// pointer to data buffer
> 	int	oob_ptr;		// pointer to oob buffer
> };
>
> > > JFFS2 needs no oob buffer for write, but YAFFS does.
> >
> > JFFS2 doesn't need one for read either does it?
>
> No, you can just use it if you're curious or, if you want to read a
> complete image with oob-data included, which could be useful for debugging

OK. I'll send you a patch off-list - probably early next week.

Phil