On Mon, Oct 12, 2015 at 06:29:04PM +0300, Priit Laes wrote:
> On Mon, 2015-10-12 at 13:52 +0200, Piotr Król wrote:
> > Hi all,
> > I'm trying to utilize method of flashing NAND used by CHIP developers
> > [1] on
> > my Cubietruck. In short they boot in FEL, write SPL, U-Boot and
> > rootfs
> > to RAM and then after booting to U-Boot write those information to
> > NAND.
> > This give ability to avoid {Live,Phoenix}Suit.
>
> >
> > Because CHIP u-boot based on 2015.07 release and it lacks DT for
> > Cubietruck in private chat Boris suggested Hans sunxi-wip U-Boot tree
> > [2]. sunxi-wip based on 2015.10-rc4 and I see a lot of difference
> > with
> > CHIP tree. I'm not sure what is exactly needed to enable NAND flashig
> > on
> > Cubietruck.
> >
> > One thing that is missing in sunxi-wip but used by CHIP is sunxi_nand
> > config command, second is suxi_nand_spl.c. But I would like to avoid
> > brainless porting of code that can lead nowhere. Especially that I
> > don't
> > know what it exactly does.
> >
> > What I tried so far:
> >
> > * booting sunxi-wip using FEL - works fine
> > * successful nand write of padded and not padded SPL - at least it
> > returens OK
> > * nand write of U-Boot [3]
> >
> > CT NAND chip is H27UCG8T2ATR-BC (Page Size : 8192 + 640(Spare), Block
> > Size : 2M + 160K bytes).
> >
> > Unfortunately after reboot nothing happens no single message from
> > SPL. When
> > trying after SPL write U-Boot I get [3].
> >
> > Did anyone tried nand write on Cubietruck ? If yes then how it was
> > tested ?
> > Any reason why despite no errors during nand write SPL was not
> > flashed?
> > Or any reason why flashed SPL doesn't boot ?
> >
> > Any suggestions or comments are welcome.
> >
> > [1] https://github.com/NextThingCo/CHIP-tools/blob/chip/stable/chip-f
> > el-flash.sh
> > [2] https://github.com/jwrdegoede/u-boot-sunxi/tree/sunxi-wip
> > [3] https://gist.github.com/pietrushnic/b2eeb1f8c4e40d687939
> >
>
> I have successfully done it via mainline kernel from Hans's WIP branch
> using mdt-utils like this: http://lists.denx.de/pipermail/u-boot/2015-M
> ay/214959.html
>
Priit,
thanks for reply. IIUC method described by Roy cannot replace
{Live,Phoenix}Suit tool because it assume that there is system on board.
I'm more interesting in utilizing FEL mode, which can be useful in
production. Other thing is that Roy use MMC which I would like to avoid
so MMC-less devices could utilize solution.
Anyway its great to know that it is possible to write new U-Boot from
inside working system. I will try this approach and see how it works for
me. For sure it can be helpful for debugging purposes.
Thanks,
--
Piotr Król
Embedded Systems Consultant
http://3mdeb.com | @3mdeb_com
--
You received this message because you are subscribed to the Google Groups
"linux-sunxi" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
For more options, visit https://groups.google.com/d/optout.
