[U-Boot] Non standard CFI detection tweaks

[Stefan Roese]

Hi Rogan,

On Monday 19 July 2010 12:18:45 Rogan Dawes wrote:
> > How is your FLASH chip connected to your CPU? In 16bit wide mode (which
> > is more common)?
> 
> I have no idea. Do you have any suggestions how I can find out?

I don't suppose you have the schematics for this board?
 
> If I do a normal md over the rest of the flash, I do see expected
> strings from the U-Boot "partition", and the kernel and ramdisk
> partitions. i.e. not duplicated or anything like that. Not sure if that
> answers your question at all?

No, it doesn't. But the unlocking addresses should give us the result (8bit 
vs. 16bit wide connection). What does work for you? The byte addresses or the 
word addresses (read manufacturer ID)?

Byte addresses:

=> mw.b base + aaa aa
=> mw.b base + 555 55
=> mw.b base + aaa 90
=> md.b base

Word addresses:

=> mw.w base + 555 00aa
=> mw.w base + 2aa 0055
=> mw.w base + 555 0090
=> md.w base


What's the output of those commands?

Cheers,
Stefan

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