is it normal that pre_sim function is called before ofono get modem
manufacturer and model ?
Yes. If you note, the devinfo atom is added in pre-sim.
i would like to get model in presim to make a better patch using
model with a new enum in vendor list (like simcom)
how i can make pre_sim to wait for theses information available ?
Simply query the model/whichever numbers as part of your initialization
procedure. e.g. run AT+FOO for the information that you need. See how
the huawei plugin uses AT+ATI for example.