linux-kernel - Re: [PATCH] RFE: add io= option to 8250 serial console

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Date:	Wed, 6 Sep 2006 23:39:22 +0100
From:	Russell King <rmk+lkml@....linux.org.uk>
To:	Josef Whiter <jwhiter@...hat.com>
Cc:	linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] RFE: add io= option to 8250 serial console

On Wed, Sep 06, 2006 at 05:22:37PM -0400, Josef Whiter wrote:
> This patch is against a recent git clone of Linus's tree.  This patch adds
> the ability to set the iobase for the serial port being used when you
> specify a serial device for the console on bootup, ie
> 
> console=ttyS0,io=0x3f8

Have you looked at 8250_early.c already in the kernel?

        console=        [KNL] Output console device and options.

                uart,io,<addr>[,options]
                uart,mmio,<addr>[,options]
                        Start an early, polled-mode console on the 8250/16550
                        UART at the specified I/O port or MMIO address,
                        switching to the matching ttyS device later.  The
                        options are the same as for ttyS, above.

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:  2.6 Serial core

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