[PATCH v3 2/2] [POWERPC] MPC8568E-MDS: add support for flash
Anton Vorontsov
cbou at mail.ru
Fri Oct 19 08:29:27 EST 2007
On Thu, Oct 18, 2007 at 02:58:25PM -0500, Kumar Gala wrote:
[...]
> > +
> > + flash at 0,0 {
> > + #address-cells = <1>;
> > + #size-cells = <1>;
> > + compatible = "Spansion,S29GL256N11TFIV2O", "cfi-flash";
> > + reg = <0 0 2000000>;
> > + bank-width = <2>;
> > + device-width = <1>;
> > +
>
> Are you basing the partition map on something or making it up?
> Clearly hrcw & u-boot are at fixed offsets, wondering about kernel &
> rootfs?
I'm making it up. From the brief look at the u-boot* git sources,
there is no `flashboot` yet, thus I'm free to make this up...
I've partitioned this flash based on these thoughts:
1. HRCW - whole sector, to not wear out it, plus it's impossible to
create just 64 bytes partition;
2. Kernel - 2MB, should be enough for bootup kernels?
3. Rootfs - the rest up to...
4. U-Boot at the end.
I'm not saying that it's best map ever, I'm open to suggestions. ;-)
* Unfortunately I didn't look at the stock Freescale u-boot, maybe
there was flashboot, most probably.. I'll find the CD to look this
up.
Much thanks for noticing this,
--
Anton Vorontsov
email: cbou at mail.ru
backup email: ya-cbou at yandex.ru
irc://irc.freenode.net/bd2
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