[coreboot] HP Pavilion 14 Chromebook - AKA Butterfly

John Lewis jlewis at johnlewis.ie
Sat Oct 19 13:29:42 CEST 2013

On 19/10/2013 05:06, Kyösti Mälkki wrote:

> On 19.10.2013 00:42, John Lewis wrote:
>>> Find attached my grub.cfg with both serial and usb consoles, also
>>> enabling some debugging for USB storage there. You could possibly
>>> move set debug="usb" before the insmods, but you may need to revert
>>> it before using serial_usb0. The easiest way is to use a desktop
>>> board booting to grub and have it provide grub shell over serial
>>> terminal. Those would be the first five lines. You can then
>>> copy-paste other commands while capturing all communication to
>>> logfile to check for any handshake with the BBB. Kyösti
>> I'm unsure exactly what you mean. I thought that with the correct
>> grub.cfg the grub output would just continue where the BIOS debug
>> output finished i.e. going to the Beaglebone? I have tried a 
>> grub.cfg
>> with just the first 5 lines and with just the usb relevant stuff,
>> hoping I would get a grub prompt over the gadget tty, but to no 
>> avail.
>> John.
> This was a proposal for a setup for a mainboard with old-style serial
> port so you could debug why console using the gadget driver does not
> come up.
> For further discussion on this particular topic, better address the 
> mailing lists.
> Kyöst

Ah, I see what you mean now. No, sorry, don't have anything with a 
serial port.


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