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

David Hendricks dhendrix at google.com
Fri Feb 12 01:08:04 CET 2010


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>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>wrote:
>
>> On Sun, Jan 31, 2010 at 6:31 PM, Sean Nelson <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>
>>>
>>
>> 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>
>>
>> --
>> David Hendricks (dhendrix)
>> Systems Software Engineer, Google Inc.
>>
>
>
>
> --
> David Hendricks (dhendrix)
> Systems Software Engineer, Google Inc.
>



-- 
David Hendricks (dhendrix)
Systems Software Engineer, Google Inc.
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