[flashrom] Contribution: option to disable read_all_first

Антон Кочков anton.kochkov at gmail.com
Mon Sep 14 21:47:11 CEST 2015

Please also see layout patches -
https://github.com/stefanct/flashrom/pull/3 +
Best regards,
Anton Kochkov.

On Mon, Sep 14, 2015 at 9:18 PM, Willy Tarreau <w at 1wt.eu> wrote:
> Hi David,
> On Mon, Sep 14, 2015 at 11:10:31AM -0700, David Hendricks wrote:
>> Hi Willy,
>> You might be interested in another approach that is used in the chromium
>> branch <https://chromium.googlesource.com/chromiumos/third_party/flashrom>.
>> The "--diff" longopt allows the user to supply a file to diff against the
>> -w argument. This is useful in cases where the user wishes to skip the
>> initial read step, and flashrom will figure out which blocks need to be
>> erased and written thereby eliminating unnecessary erase/write operations
>> as well.
>> There is some documentation for it here:
>> https://sites.google.com/a/chromium.org/dev/chromium-os/packages/cros-flashrom#TOC-Speeding-Up-Writes
> Thank you I'll take a look at it, it can indeed be another solution. The
> only thing is that it requires the creation of an extra file and I tend to
> find that it's not always convenient to have to create files for known
> patterns. However I think that it would be possible based on your
> approach to provide an option to replace the file with a known pattern
> for some cases (eg: full of 0xff or full of 0x00, which could be called
> "assume-clean" or "assume-dirty"), which would achieve the same result
> and at the same time not change the spirit of your latest work.
> Best regards,
> Willy
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