[ECOS] Modifying RedBoot to support multiple flash devices

Grant Mills gmills@ucsd.edu
Wed Mar 8 22:31:00 GMT 2006


On 3/8/06, Andrew Lunn <andrew@lunn.ch> wrote:
> > For a more general solution you'll want the V2 branch in anoncvs. In
> > particular the V2 version of the AMD flash driver has an option for
> > CFI support, i.e. the device parameters will be determined at run-time
> > and you can bounce around between devices within a family all you
> > like. If you want to switch between families, e.g. between
> > AMD-compatible and Intel Strata flash, then in theory the V2 code
> > should allow for that as well. However that is not a common scenario.
>
> Having two different families works well with the v2 code. We have a
> board with either ST or Intel Strata devices.
>
>        Andrew
>
>

Specifically, we will need to go between Intel Strata and AMD/Spansion
Mirror Bit.

I'd prefer a CFI solution as well since that provides a migration path
for larger parts without code changes.

However, look out for the Intel 1Gb and 512Mb P30 Strata Flash.  They
are multi-die devices and will require multiple chip selects for the
1Gb and multiple CFI entries for each die.  We aren't looking at
either of these chips (yet.) on the RedBoot platform, but we've used
them in others.

Thanks for all the help.

--
Grant Mills
gmills@ucsd.edu

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