Re: [flashrom] flashrom support for read\write word\byte actions

[Stefan Tauner]

On Sun, 9 Nov 2014 08:29:21 +0000
"Peri, Chanan"  wrote:
> Hi,
> From what I see, flashrom only support full erase\read\write actions for the entire flash chip.
> Is there any support for more specific actions - like erase sector? Read\write word\byte?
> If not, is there any plan to support such a thing.
>
> I'm asking specifically about the DediProg programmer, but I'll be interested to know if this can be done with other programmers.

Hello,

currently there exist already some patches that allow to read and write
single sectors with some preparation and the user interface is probably
not what you want (I am talking about layout files that allow to define
and operate on regions of flash space).

The midterm plan is to make the core of flashrom more library-like,
which would ease the creation of a special purpose tool like the one
you probably require. Note that midterm in flashrom terms can mean some
years since developer time has been rather scarce lately...

All of that is pretty much programmer-agnostic because most of the time
we specify exactly what is sent to the SPI (or other) bus.

flashrom support for read\write word\byte actions

[Peri, Chanan]

Hi Stefan, thanks for the quick response!

Do you know what does this "core" of flashrom include in terms of dediprog API for more specific operations (sector erase, read\write byte\word)?
Would it be reasonably possible for me (using the source code of flashrom) to add what I need, even if it's specific to dediprog or to some specific flash type?

Chanan.

-----Original Message-----
From: Stefan Tauner [mailto:[e-mail]] 
Sent: Sunday, November 09, 2014 11:48
To: Peri, Chanan
Cc: [e-mail]
Subject: Re: [flashrom] flashrom support for read\write word\byte actions

On Sun, 9 Nov 2014 08:29:21 +0000
"Peri, Chanan"  wrote:
> Hi,
> From what I see, flashrom only support full erase\read\write actions for the entire flash chip.
> Is there any support for more specific actions - like erase sector? Read\write word\byte?
> If not, is there any plan to support such a thing.
>
> I'm asking specifically about the DediProg programmer, but I'll be interested to know if this can be done with other programmers.

Hello,

currently there exist already some patches that allow to read and write single sectors with some preparation and the user interface is probably not what you want (I am talking about layout files that allow to define and operate on regions of flash space).

The midterm plan is to make the core of flashrom more library-like, which would ease the creation of a special purpose tool like the one you probably require. Note that midterm in flashrom terms can mean some years since developer time has been rather scarce lately...

All of that is pretty much programmer-agnostic because most of the time we specify exactly what is sent to the SPI (or other) bus.

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