From: Andrew Worsley <amwors...@gmail.com> Subject: Re: FTDI serial console support? Date: Sat, 19 May 2018 23:12:42 +1000
> On 19 May 2018 at 00:32, Petter Gustad <g...@gustad.com> wrote: >> From: Daniel Kiper <dki...@net-space.pl> >> Subject: Re: FTDI serial console support? >> Date: Fri, 18 May 2018 13:55:55 +0200 >> >>> On Fri, May 18, 2018 at 01:01:41PM +0200, Petter Gustad wrote: >>>> From: Daniel Kiper <dki...@net-space.pl> >>>> Subject: Re: FTDI serial console support? >>>> Date: Wed, 16 May 2018 11:32:19 +0200 >>>> >>>> > On Wed, May 16, 2018 at 06:21:17AM +0200, Petter Gustad wrote: >>>> >> From: Daniel Kiper <dki...@net-space.pl> >>>> >> Subject: Re: FTDI serial console support? >>>> >> Date: Tue, 15 May 2018 22:00:06 +0200 >>>> >> >>>> >> > On Fri, May 11, 2018 at 03:55:36PM +0200, Petter Gustad wrote: >>>> >> >> >>>> >> >> Is there a way to specify a FTDI based serial console using >>>> >> >> GRUB_TERMINAL, GRUB_SERIAL_COMMAND, or some other variable? If yes, >>>> >> >> what is the syntax? >>>> >> >> >>>> >> >> BTW my serial port adapter matches the vendor id and device id given >>>> >> >> in grub-core/bus/usb/serial/ftdi.c: >>>> >> >> > .... >>> Could you just do "insmod usbserial_ftdi"? There is a chance that it >>> will pull in all needed dependencies without breaking disk access. >> >> Thanks. Only "insmod usbserial_ftdi" does work in the sense that it >> will not break disk access. I also managed to load grub using PXE/tftp >> where I was not dependend upon disk access. >> >> But in both cases it does not work like in the coreboot URL above. >> After do insmod on usbserial_ftdi and usbserial_usbdebug the >> terminal_output command will only return console as its active output >> terminal. It will list serial_* as available output terminals, but I >> can't select usb0, usb1, etc as argument to the serial command. > > I think GRUB relies on the BIOS/UEIF to provide drivers and typically > USB was only > used to emulated old hardware like keyboard/mouse and CD-ROMs. > > Coreboot - is a BIOS/UEIF replacement and so it can do anything they > care to implement - but then it has to be > customised for each individual hardware case where as GRUB can rely on > the standardised routines. > > But perhaps things have moved on - it would be great if UEIF provided > some standard USB drivers for serial. Thank you Andrew and Daniel for information and suggestions. Seems like I have to figure out what drivers are provided with UEIF. Or simply just get another motherboard with a 8250/16550 compatible serial port. Best regards //Petter _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel
