FW: partitions and erase regions

Kári Davíðsson kd at flaga.is
Fri Apr 27 07:05:20 EDT 2001


Should also have gone on the list...

-----Original Message-----
From: Kári Davíðsson 
Sent: 27. apríl 2001 11:03
To: 'David Woodhouse'
Subject: RE: partitions and erase regions 


But how can that work?
If you call erase at offset 0x0 for 8*8K + 15*64K only the first sector
i.e. first 8K is erased not all 8 sectors.

K.D.

> -----Original Message-----
> From: David Woodhouse [mailto:dwmw2 at infradead.org]
> Sent: 27. apríl 2001 10:59
> To: Kári Davíðsson
> Cc: mtd at infradead.org; nico at cam.org
> Subject: Re: partitions and erase regions 
> 
> 
> 
> kd at flaga.is said:
> >  How does JFFS[2] deal with the whole flash chip today? If it just
> > deals with 'major' erase size then it shurely must simply ingore the
> > first/last part (with 'minor' erase sizes) of the chip. 
> 
> It just ignores the fact that it has minor erase sizes. If 
> you have 8*8K + 
> 15*64K, then JFFS2 will just treat all the 8 minor blocks as a single 
> normal-sized block, and will only ever ask the flash driver 
> to erase them 
> all together.
> 
> --
> dwmw2
> 
> 
> 


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