[ECOS] Limit region of flash used by RedBoot for FIS?

[Gary Thomas]

Grant Edwards wrote:
> I've got a target containing a 4MB Intel StrataFlash.  The top
> 1MB of the part is used by hardware and is not available for
> normal FIS usage.
>
> Upon examination of RedBoot's FIS code, it appears that it will
> always use all of flash for FIS (after reserving a portion for
> RedBoot+config as required). Would the maintainers be willing
> to entertain an FIS package option that could be used to limit
> the region of flash used?
>   

Yes, there are CDL options that say where to put things.  These can 
easily be adjusted to leave the top
1MB alone, etc.
> It might be useful to allow low-level RedBoot CLI access to
> that top 1MB so that under certain circumstances the data in
> that section could be updated, but I would definitely need it
> to be untouched by commands such as "fis init -f".
>
> Or should I just hack the StrataFlash driver so that it returns
> a flash_info.end value that's 1MB below the top end of the
> part?
>
> The RedBoot and eCos flash code always erases blocks
> individually so I'm not going to loose that top 1MB to an
> entire-chip erase operation, right?
>
>   


-- 
Gary Thomas
Capt, CAP CO-021
home/office: (970) 352-4947,  cell: (970) 481-5112


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