[flashrom] [PATCH] Fix Winbond W25X{10, 20, 40, 80} incorrect erase blocks

[Sean Nelson]

On 2/11/10 4:08 PM, David Hendricks wrote:
> Okay, so I applied the same changes to the W25x16 and got good 
> results. It looks like the same applies to the W25x{16,32,64} products 
> in addition to the W25x{10,20,40,80}. Please update the patch to 
> include the additional chips.
>
> W25x{16,32,64} datasheet: 
> http://www.winbond-usa.com/products/Nexflash/pdfs/datasheets/W25X16_32_64h.pdf
>
> On Thu, Feb 11, 2010 at 3:56 PM, David Hendricks <dhendrix at google.com 
> <mailto:dhendrix at google.com>> wrote:
>
>     D'oh! I just realized that this patch doesn't affect the x16. I
>     really ought to read the patch more carefully...
>
>
>     On Thu, Feb 11, 2010 at 3:50 PM, David Hendricks
>     <dhendrix at google.com <mailto:dhendrix at google.com>> wrote:
>
>         On Sun, Jan 31, 2010 at 6:31 PM, Sean Nelson
>         <audiohacked at gmail.com <mailto:audiohacked at gmail.com>> wrote:
>
>             Fix erase blocks for Winbond W25X* SPI chips. The Winbond
>             W25X10 and related chips only have 4k and 64k blocks and
>             only accept erase commands: 20h, d8h, and c7h.
>
>             Signed-off-by: Sean Nelson <audiohacked at gmail.com
>             <mailto:audiohacked at gmail.com>>
>
>
>         Tested on a W25x16 flash chip using an NM10 southbridge.
>         Verbose flashrom -E log attached. Following an erase with a
>         read, the image produced turns up all 0xFF bytes. The warnings
>         reported seem benign, and probably have more to do with the
>         NM10 than the flash chip...
>
>         Acked by: David Hendricks <dhendrix at google.com
>         <mailto:dhendrix at google.com>>
>
>         -- 
>         David Hendricks (dhendrix)
>         Systems Software Engineer, Google Inc.
>
>
>
>
>     -- 
>     David Hendricks (dhendrix)
>     Systems Software Engineer, Google Inc.
>
>
>
>
> -- 
> David Hendricks (dhendrix)
> Systems Software Engineer, Google Inc.
The W25x16 and the W25x16BV use the exact same chip ids but the W25x16BV 
supports the already defined erase commands.
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