David Brownell wrote:
> With NAND it's easy to see why they won't use CPU addresses. :)
>
> In general, using { bank, sector } addressing gives finer control
> over the actual chip resources, and is less error prone, even for
> NOR flash. You kind of want to avoid accidentally erasing (or
> even protecting) the wrong data.
>
However, it is not very useful if I need to write an image that spans
multiple banks - I have boards where the addressable flash is made up
out of multiple physical flash chips, each on its own chipselect, at
adjacent addresses - and these may be different flashes, eg. one CFI and
one non-CFI one, so that makes multiple banks in the OpenOCD configuration.
However, neither my bootloader not my kernel really care - they only see
one big flash area, and when writing an image using OpenOCD, I need to
do the same.
Furthermore, I want to write *one* config file for such a type of board.
I don't really care about what sector numbers in the flash are used -
the addresses are constant, the sector numbers change depending on the
particular flash that is stuffed on a board.
cu
Michael
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