I just sent you a private email with a photo of the chip. Looking at it
a second time, the "50" might actually be "SO" as well.
I'm sorry I don't have any more information than a) the photo and b) the
fact that indeed flashrom was able to read/write the chip in it's
current form (master branch). So I think it's supported already.
On 13/06/2025 12.31, Anastasia Klimchuk wrote:
Hello Andreas,
1) Yes there are some similar names, but the name by itself doesn't
mean much - whether the chip is supported or not depends on all the
other properties in the chip definition.
To answer the question we need a datasheet for your chip. I could find
the datasheet for W25Q128JV (like yours but without "50" at the end),
do you think it's yours?
2) The datasheet for W25Q128JV which I look at (but don't know if it's
yours) describes models that identify as 0x4018 and 0x7018 , and we
have definitions with these IDs in our flashchips. In general, if your
model returns one of supported IDs (which are all in
include/flashchips.h) , then the chip gets identified.
3) It happens sometimes that new models are released with the same IDs
as previous models. It is possible that the chip will get identified
by ID but match a different definition (and may still work. or may
not). Again, datasheet would help recognise that.
4) If your chip supports SFDP protocol (which is common now) you can
do read/write/erase operations via SFDP detection, for this you can
add `-c "SFDP-capable chip"` to the command line. Then flashrom will
only talk to the chip with SFDP and won't look at existing model
definitions. Note this won't support write-protect commands (but maybe
you don't need them)
As a summary, if we can look at the datasheet it would be great. If
not, you can try probing (only probing first) and see if the chip is
detected. You can share the verbose logs from probing (fto be verbose
add -V or -VV to the command line).
If you don't need write-protect commands you can also try probing with
`-c "SFDP-capable chip"`.
Hope this helps, tell us how it goes!
On Sun, Jun 8, 2025 at 5:49 PM Andreas Schildbach via flashrom
<flashrom@flashrom.org> wrote:
Will flashrom be able to read/write a winbond 25Q128JV50, using a CH341A
programmer? I notice the support list (flashchips/winbond.c) contains
a couple of very similar names but not this exact name.
If not, can it be made to read/write that chip just by adding another
entry? Or is it possible that the CH341A can't do it?
The chip is in a Lenovo X280 which I bricked just by enrolling my own
secure boot key.
Cheers,
Andreas
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