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