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Re: Replacing the Console driver

To: "John D. Davis" <johnd@Stanford.EDU>
Subject: Re: Replacing the Console driver
From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: Thu, 26 Jul 2001 09:39:05 +0200 (MEST)
Cc: Debian MIPS list <debian-mips@lists.debian.org>, SGI MIPS list <linux-mips@oss.sgi.com>
In-reply-to: <Pine.GSO.4.31.0107251427180.21227-100000@myth1.Stanford.EDU>
Sender: owner-linux-mips@oss.sgi.com
On Wed, 25 Jul 2001, John D. Davis wrote:
> I am modifying the linux kernel to be able to be run by a simulator.  I
> need to modify the console driver and interrupt handler.  I have been
> going through the various files, console.*, tty.* and the serial files to
> see how to interface to the console.  I have also read some kernel korner
> articles, but they seem a little out of date.  Is there any other
> recommended documentation on the console driver and how it works on an
> indy? I am trying to sort out the low-level interfaces from the
> higher-level ones.  I just need to change the low-level interface from
> using the hardware to using the simulator interface.

The interface to the console is specified in <linux/console.h>.

So write your own console implementation, and set

    conswitchp = &consw_for_your_emulator

in early kernel initialization code.

Gr{oetje,eeting}s,

                                                Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                                            -- Linus Torvalds


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