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linux/arch/sh64
Gerd Hoffmann 69331af79c Fixes and cleanups for earlyprintk aka boot console
The console subsystem already has an idea of a boot console, using the
CON_BOOT flag.  The implementation has some flaws though.  The major
problem is that presence of a boot console makes register_console() ignore
any other console devices (unless explicitly specified on the kernel
command line).

This patch fixes the console selection code to *not* consider a boot
console a full-featured one, so the first non-boot console registering will
become the default console instead.  This way the unregister call for the
boot console in the register_console() function actually triggers and the
handover from the boot console to the real console device works smoothly.
Added a printk for the handover, so you know which console device the
output goes to when the boot console stops printing messages.

The disable_early_printk() call is obsolete with that patch, explicitly
disabling the early console isn't needed any more as it works automagically
with that patch.

I've walked through the tree, dropped all disable_early_printk() instances
found below arch/ and tagged the consoles with CON_BOOT if needed.  The
code is tested on x86, sh (thanks to Paul) and mips (thanks to Ralf).

Changes to last version: Rediffed against -rc3, adapted to mips cleanups by
Ralf, fixed "udbg-immortal" cmd line arg on powerpc.

Signed-off-by: Gerd Hoffmann <kraxel@exsuse.de>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Andi Kleen <ak@suse.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:04 -07:00
..
boot fix file specification in comments 2006-10-03 23:01:26 +02:00
configs sh64: Update cayman defconfig. 2006-10-03 13:31:43 +09:00
kernel Fixes and cleanups for earlyprintk aka boot console 2007-05-08 11:15:04 -07:00
lib [NET]: SH64 checksum annotations and cleanups. 2006-12-02 21:23:11 -08:00
mach-cayman PCI: Cleanup the includes of <linux/pci.h> 2007-05-02 19:02:35 -07:00
mach-harp Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
mach-romram Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
mach-sim Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
mm [PATCH] optional ZONE_DMA: remove ZONE_DMA remains from sh/sh64 2007-02-11 10:51:18 -08:00
oprofile fix file specification in comments 2006-10-03 23:01:26 +02:00
Kconfig [PATCH] optional ZONE_DMA: remove ZONE_DMA remains from sh/sh64 2007-02-11 10:51:18 -08:00
Kconfig.debug
Makefile sh64: Drop deprecated ISA tuning for legacy toolchains. 2006-09-12 14:21:25 +09:00