Re: Coming up with a generic kernel config

[ludo@gnu.org (Ludovic Courtès)]

Mark H Weaver <mhw@netris.org> skribis:

> ludo@gnu.org (Ludovic Courtès) writes:
>
>> Sree Harsha Totakura <sreeharsha@totakura.in> skribis:
>>
>>> On 06/25/2014 09:26 PM, Ludovic Courtès wrote:
>>>> 1. Serial console is unavailable when booting.  I thought that’d be
>>>>      addressed by explicitly setting CONFIG_SERIAL_8250=y etc. (see
>>>>      below for the list), but that’s not enough.  What am I missing?
>>>
>>> My kernel config has the following for serial console:
>>> CONFIG_SERIAL_NONSTANDARD=y
>>> CONFIG_SERIAL_8250=y
>>> CONFIG_SERIAL_8250_PNP=y
>>> CONFIG_SERIAL_8250_CONSOLE=y
>>> CONFIG_SERIAL_8250_DMA=y
>>> CONFIG_SERIAL_8250_PCI=y
>>> CONFIG_SERIAL_8250_EXTENDED=y
>>> CONFIG_SERIAL_8250_MANY_PORTS=y
>>> CONFIG_SERIAL_8250_SHARE_IRQ=y
>>> CONFIG_SERIAL_8250_RSA=y
>>> CONFIG_SERIAL_CORE=y
>>> CONFIG_SERIAL_CORE_CONSOLE=y
>>
>> The one I built has all these as well.  :-/
>
> I think you need to pass something like "console=ttyS0" as a kernel
> command line option.

Yes, of course.  :-)  When I wrote serial console is unavailable, I meant
it’s unavailable when I pass ‘console=ttyS0’.

Ludo’.