mirror of
https://github.com/torvalds/linux.git
synced 2024-11-28 07:01:32 +00:00
5c93316c8c
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 <alexander.sverdlin@nokia.com>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/19842/
Cc: linux-mips@linux-mips.org
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Jonas Gorski <jonas.gorski@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
34 lines
834 B
C
34 lines
834 B
C
/*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 as published
|
|
* by the Free Software Foundation.
|
|
*
|
|
* Copyright (C) 2010 John Crispin <john@phrozen.org>
|
|
*/
|
|
|
|
#include <linux/cpu.h>
|
|
#include <lantiq_soc.h>
|
|
#include <asm/setup.h>
|
|
|
|
#define ASC_BUF 1024
|
|
#define LTQ_ASC_FSTAT ((u32 *)(LTQ_EARLY_ASC + 0x0048))
|
|
#ifdef __BIG_ENDIAN
|
|
#define LTQ_ASC_TBUF ((u32 *)(LTQ_EARLY_ASC + 0x0020 + 3))
|
|
#else
|
|
#define LTQ_ASC_TBUF ((u32 *)(LTQ_EARLY_ASC + 0x0020))
|
|
#endif
|
|
#define TXMASK 0x3F00
|
|
#define TXOFFSET 8
|
|
|
|
void prom_putchar(char c)
|
|
{
|
|
unsigned long flags;
|
|
|
|
local_irq_save(flags);
|
|
do { } while ((ltq_r32(LTQ_ASC_FSTAT) & TXMASK) >> TXOFFSET);
|
|
if (c == '\n')
|
|
ltq_w8('\r', LTQ_ASC_TBUF);
|
|
ltq_w8(c, LTQ_ASC_TBUF);
|
|
local_irq_restore(flags);
|
|
}
|