I'm interested in creating a bluetooth dongle that defaults to a hid proxy mode in a manner similar to a number of csr based dongles.
What this means is it presents itself as a hid mouse and keyboard pair (typically) until the mode is flipped in the main OS (see bluez hid2hci for an example). The benefit here is that one can use paired devices as early as BIOS/UEFI, before the OS bluetooth stack is loaded, so one can edit settings/enter passwords/etc using your bluetooth devices.
Does anyone have any information on this matter?