On Jul 16, 2009, at 1:43 AM, Alexander Best wrote:
modern bioses support an option called legcy usb keyboard support.
the way i
understood it is that the bios grabs usb keyboard events and uses
them to
emulate an AT keyboard. that way e.g. a bootloader can the used
with a usb
keyboard although there's no usb stack or whatever in the bootloader.
when the kernel boots the usb stack takes control over the usb
keyboard and
the bios keyboard legacy support gets disabled. couldn't we revert
to this
stage after a panic occurs? letting the bios take control over the usb
keyboard again and emulate an AT keyboard?
This obviously doesn't apply to hardware that isn't PC hardware.
The USB stack is generic code and you cannot assume some PC BIOS
is there to handle things.
FYI,
--
Marcel Moolenaar
[email protected]
_______________________________________________
[email protected] mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-usb
To unsubscribe, send any mail to "[email protected]"
