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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>
45 lines
991 B
C
45 lines
991 B
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1996 David S. Miller (dm@sgi.com)
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* Compatibility with board caches, Ulf Carlsson
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*/
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#include <linux/kernel.h>
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#include <asm/sgialib.h>
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#include <asm/bcache.h>
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#include <asm/setup.h>
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/*
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* IP22 boardcache is not compatible with board caches. Thus we disable it
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* during romvec action. Since r4xx0.c is always compiled and linked with your
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* kernel, this shouldn't cause any harm regardless what MIPS processor you
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* have.
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*
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* The ARC write and read functions seem to interfere with the serial lines
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* in some way. You should be careful with them.
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*/
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void prom_putchar(char c)
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{
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ULONG cnt;
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CHAR it = c;
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bc_disable();
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ArcWrite(1, &it, 1, &cnt);
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bc_enable();
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}
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char prom_getchar(void)
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{
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ULONG cnt;
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CHAR c;
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bc_disable();
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ArcRead(0, &c, 1, &cnt);
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bc_enable();
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return c;
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}
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