56 lines
1.2 KiB
C
56 lines
1.2 KiB
C
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/*
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* arch/mips/dec/prom/console.c
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*
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* DECstation PROM-based early console support.
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*
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* Copyright (C) 2004 Maciej W. Rozycki
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/console.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <asm/dec/prom.h>
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static void __init prom_console_write(struct console *con, const char *s,
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unsigned int c)
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{
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static char sfmt[] __initdata = "%%%us";
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char fmt[13];
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snprintf(fmt, sizeof(fmt), sfmt, c);
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prom_printf(fmt, s);
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}
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static struct console promcons __initdata = {
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.name = "prom",
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.write = prom_console_write,
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.flags = CON_PRINTBUFFER,
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.index = -1,
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};
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static int promcons_output __initdata = 0;
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void __init register_prom_console(void)
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{
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if (!promcons_output) {
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promcons_output = 1;
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register_console(&promcons);
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}
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}
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void __init unregister_prom_console(void)
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{
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if (promcons_output) {
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unregister_console(&promcons);
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promcons_output = 0;
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}
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}
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void disable_early_printk(void)
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__attribute__((alias("unregister_prom_console")));
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