From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760104AbYFLWjW (ORCPT ); Thu, 12 Jun 2008 18:39:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753400AbYFLWjO (ORCPT ); Thu, 12 Jun 2008 18:39:14 -0400 Received: from relay1.sgi.com ([192.48.171.29]:56881 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753317AbYFLWjN (ORCPT ); Thu, 12 Jun 2008 18:39:13 -0400 Message-Id: <20080612223802.673729000@polaris-admin.engr.sgi.com> References: <20080612223802.528617000@polaris-admin.engr.sgi.com> User-Agent: quilt/0.46-1 Date: Thu, 12 Jun 2008 15:38:03 -0700 From: Mike Travis To: Ingo Molnar Cc: Andrew Morton , Thomas Gleixner , "H. Peter Anvin" , linux-kernel@vger.kernel.org Subject: [PATCH 1/1] x86: Add config option to setup early serial console Content-Disposition: inline; filename=setup-early-serial-console Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Add config option EARLY_SERIAL_CONSOLE to enable early printk's to be directed to the serial console. Based on linux-next Signed-off-by: Mike Travis --- --- arch/x86/Kconfig.debug | 9 +++++++++ arch/x86/kernel/early_printk.c | 4 ++++ 2 files changed, 13 insertions(+) --- linux-2.6-next.orig/arch/x86/Kconfig.debug +++ linux-2.6-next/arch/x86/Kconfig.debug @@ -29,6 +29,15 @@ config EARLY_PRINTK with klogd/syslogd or the X server. You should normally N here, unless you want to debug such a crash. +config EARLY_SERIAL_CONSOLE + bool "Early Serial Console" + default m + help + Initializes the early console to be the serial port. The default + is to use the VGA console. + + This is useful for server systems that do not have a VGA console. + config DEBUG_STACKOVERFLOW bool "Check for stack overflows" depends on DEBUG_KERNEL --- linux-2.6-next.orig/arch/x86/kernel/early_printk.c +++ linux-2.6-next/arch/x86/kernel/early_printk.c @@ -193,7 +193,11 @@ static struct console simnow_console = { }; /* Direct interface for emergencies */ +#ifdef CONFIG_EARLY_SERIAL_CONSOLE +static struct console *early_console = &early_serial_console; +#else static struct console *early_console = &early_vga_console; +#endif static int early_console_initialized; void early_printk(const char *fmt, ...) --