linux-toradex.git/arch/mips/kernel/early_printk.c, branch v5.18

mips: unify prom_putchar() declarations

2018-07-17T16:40:17+00:00

prom_putchar() is used centrally in early printk infrastructure therefore
at least MIPS should agree on the function return type.

[paul.burton@mips.com:
  - Include linux/types.h in asm/setup.h to gain the bool typedef before
    we start include asm/setup.h elsewhere.
  - Include asm/setup.h in all files that use or define prom_putchar().
  - Also standardise on signed rather than unsigned char argument.]

Signed-off-by: Alexander Sverdlin 
Signed-off-by: Paul Burton 
Patchwork: https://patchwork.linux-mips.org/patch/19842/
Cc: linux-mips@linux-mips.org
Cc: Ralf Baechle 
Cc: James Hogan 
Cc: Jonas Gorski 
Cc: Florian Fainelli 
Cc: Kate Stewart 
Cc: Philippe Ombredanne

early_printk: consolidate random copies of identical code

2013-04-30T01:28:13+00:00

The early console implementations are the same all over the place.  Move
the print function to kernel/printk and get rid of the copies.

[akpm@linux-foundation.org: arch/mips/kernel/early_printk.c needs kernel.h for va_list]
[paul.gortmaker@windriver.com: sh4: make the bios early console support depend on EARLY_PRINTK]
Signed-off-by: Thomas Gleixner 
Signed-off-by: Paul Gortmaker 
Cc: Russell King 
Acked-by: Mike Frysinger 
Cc: Michal Simek 
Cc: Ralf Baechle 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mundt 
Cc: "David S. Miller" 
Cc: Chris Metcalf 
Cc: Richard Weinberger 
Reviewed-by: Ingo Molnar 
Tested-by: Paul Gortmaker 
Cc: Geert Uytterhoeven 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

MIPS: early_printk: drop __init annotations

2013-02-19T08:36:37+00:00

We cannot use __init for earlyprintk code or data, since the kernel
parameter "keep_bootcon" allows leaving the boot console enabled.

Currently MIPS will crash/hang/die if you use keep_bootcon. The patch
fixes it at least on Lemote FuLoong mini-PC. Changes for other boards
were done based on what I could find with grep...

Signed-off-by: Aaro Koskinen 
Patchwork: http://patchwork.linux-mips.org/patch/4935/
Signed-off-by: John Crispin

[MIPS] fix sparse warning about setup_early_printk()

2008-07-15T17:44:29+00:00

This patch fixes the following sparse warning:

<<<<<<<<

arch/mips/kernel/early_printk.c:35:13: warning: symbol 'setup_early_printk'
was not declared. Should it be static?

<<<<<<<<

The fix is to define a prototype of the setup_early_printk() function and
to include the appropriate header into arch/mips/kernel/early_printk.c.

[Ralf: Sorted includes again]

Signed-off-by: Dmitri Vorobiev 
Signed-off-by: Ralf Baechle

[MIPS] early_printk: allow the early console to run earlier

2007-05-11T13:28:30+00:00

Signed-off-by: Franck Bui-Huu 
Signed-off-by: Ralf Baechle

[MIPS] early_printk: use init section

2007-05-11T13:28:30+00:00

Signed-off-by: Franck Bui-Huu 
Signed-off-by: Ralf Baechle

Fixes and cleanups for earlyprintk aka boot console

2007-05-08T18:15:04+00:00

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 
Acked-by: Paul Mundt 
Acked-by: Ralf Baechle 
Cc: Andi Kleen 
Cc: Alan Cox 
Cc: Richard Henderson 
Cc: Ivan Kokshaysky 
Cc: Paul Mackerras 
Cc: Benjamin Herrenschmidt 
Cc: Jeremy Fitzhardinge 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[MIPS] Fix and cleanup the mess that a dozen prom_printf variants are.

2007-03-04T19:02:37+00:00

early_printk is a so much saner thing.

Signed-off-by: Ralf Baechle