Hello Dominique,
you should always keep the mailing list in the loop. This way you
wouldn't rely on a single person giving the answers :)
On 05.04.19 22:35, Dominique Wille wrote:
> What is strange is we can flash from DOS with the oem flashing software
> without touching BIOS.
> So we guess there is maybe something missing in flashrom ?
Possible, but not necessarily. Flashrom is a simple tool to write
data to a flash chip. It doesn't care about the contents, just that
they are written correctly.
Updating the firmware of a modern mainboard, however, is a complex
process that may involve more than just writing data to the flash.
There are roughly three ways how the update process of that DOS tool
might look like:
a) The tool "asks" the firmware to allow write access to the
flash chip (then does what flashrom would do).
- This is rather old school, but who knows? *shrug*
b) The tool hands the data over to a program running in the firmware
(usually involves SMM; that's also where the write protection is
implemented).
c) The tool writes the data to a specific memory location, and the
update is done during the next reboot/resume (when the firmware
is the only process running on the computer).
( d) A combination of b) and c) )
Only for case a), flashrom would be the correct program to use. But
that would still need a piece of code to talk to the running firmware
(what we call a board-enable).
I guess the best option would be to talk to the manufacturer of your
devices. And there is also LVFS [1]. The people there might even know
already how it works for your device.
Nico
[1] https://fwupd.org/
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