Messages in this thread Patch in this message | | | Date | Thu, 12 Jun 2008 15:38:03 -0700 | From | Mike Travis <> | Subject | [PATCH 1/1] x86: Add config option to setup early serial console |
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* 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 <travis@sgi.com> ---
--- 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, ...) --
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