04-02-2009
thanks, a list worth to know
thanks dukessd for the list.
what I meant was: is there a way to alter the operating system communication parameters using the firmware?
I now realize that it isn't probably possible. this morning I was thinking to the firmware/SMS as a sort of grub, through which, even if in a limited way, we can browse the filesystem and pass parameters to the booting kernel.
so my question. thanks a lot for your explication.
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LEARN ABOUT ULTRIX
systemd-getty-generator
SYSTEMD-GETTY-GENERATOR(8) systemd-getty-generator SYSTEMD-GETTY-GENERATOR(8)
NAME
systemd-getty-generator - Generator for enabling getty instances on the console
SYNOPSIS
/lib/systemd/system-generators/systemd-getty-generator
DESCRIPTION
systemd-getty-generator is a generator that automatically instantiates serial-getty@.service on the kernel console(s), if they can function
as ttys and are not provided by the virtual console subsystem. It will also instantiate serial-getty@.service instances for virtualizer
consoles, if execution in a virtualized environment is detected. If execution in a container environment is detected, it will instead
enable console-getty.service for /dev/console, and container-getty@.service instances for additional container pseudo TTYs as requested by
the container manager (see Container Interface[1]). This should ensure that the user is shown a login prompt at the right place, regardless
of which environment the system is started in. For example, it is sufficient to redirect the kernel console with a kernel command line
argument such as console= to get both kernel messages and a getty prompt on a serial TTY. See kernel-parameters.txt[2] for more information
on the console= kernel parameter.
systemd-getty-generator implements systemd.generator(7).
Further information about configuration of gettys can be found in systemd for Administrators, Part XVI: Gettys on Serial Consoles (and
Elsewhere)[3].
SEE ALSO
systemd(1), agetty(8)
NOTES
1. Container
Interface
https://www.freedesktop.org/wiki/Software/systemd/ContainerInterface/
2. kernel-parameters.txt
https://www.kernel.org/doc/Documentation/admin-guide/kernel-parameters.txt
3. systemd for Administrators, Part XVI: Gettys on Serial Consoles (and Elsewhere)
http://0pointer.de/blog/projects/serial-console.html
systemd 237 SYSTEMD-GETTY-GENERATOR(8)