[flashrom] Write-Test for "M25P10-A"

[Stefan Tauner]

On Thu, 19 Jun 2014 15:36:11 +0200
The Raven <originalraven at hotmail.com> wrote:

> Hello,
> this chip is marked as "untested" in write mode.
> So here are my test-results:
> 
> Erase in d8-Mode is not working (see log).
> But i think it's the already known "serprog bug".
> Erase in c7-mode is ok.
> 
> Write is working in both modes.
> But i don't know why in c7-mode the log shows:
> 0x000000-0x007fff:W, 0x008000-0x00ffff:S, 0x010000-0x017fff:S,
> 0x018000-0x01ffff:S
> 
> I have created the test-file with dd and urandom. The file (131072 byte)
> is full with data.
> So it should write (W) not only to 0x007fff. Strange!
> 
> If you need more logs or infos, let me know.
> 
> BTW: The chip is labeled "25P10VP". I see nothing with "-A".
> And the chip was found on a "Maxtor" hard disk drive.

That is indeed very strange and I have only one plausible theory about
that: This could happen if erasing the first block worked fine
while flashrom failed afterwards. If then the same contents (as were on
the chip before the erase) would be written, only the first block would
have to be rewritten. And since your erase had exactly that
characteristic of failing at the second block this might be the case
depending on the order and data of your actions.

Could you reproduce that problem? Were you reusing the random file or
have you recreated it between writes?

-- 
Kind regards/Mit freundlichen Grüßen, Stefan Tauner