F.Vanalme at TELEVIC.com
Fri Mar 4 08:49:37 EST 2011
> -----Original Message-----
> From: Sascha Hauer [mailto:s.hauer at pengutronix.de]
> Sent: vrijdag 4 maart 2011 9:30
> To: Vanalme Filip
> Cc: barebox at lists.infradead.org
> Subject: Re: bootargs
> On Fri, Mar 04, 2011 at 09:18:26AM +0100, Vanalme Filip wrote:
> > I think it might have something to do with the BI-swapping issue. The
> > BI-swapping is, as far as I know, not yet implemented in the kernel's
> > NAND driver. So, if I flash the rootfs with Barebox (doing the
> > BI-swap) and then read the rootfs from within the kernel (not doing
> > the BI-swap), I will for sure have problem...
> Using 2k NAND flash on the i.MX27 will most likely lead to problems...
> > Remarkable : the Linux version I use is a version we downloaded from
> > Freescale's git repositry. In this version, we could select the
> > i.MX27PDK board. However, that board's code is obviously not
> > registering the NAND flash driver... knowing that the i.MX27PDK only
> > contains NAND-flash, this is very weird...
> Normally we do root over nfs during development, so this is not very
> surprising. As Freescale does not support the i.MX27 anymore the
> i.MX27PDK support in FSLs git kernel is probably identical to mainline.
I implemented the BI-swapping in mxc_nand.c (analogous to the implementation in Barebox's mxc_nand.c). With success. The kernel can now mount the root filesystem from NAND flash and ends with a prompt.
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