LXR linux/arch/mips/fw/arc/arc

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * Wrap-around code for a console using the
   4 * ARC io-routines.
   5 *
   6 * Copyright (c) 1998 Harald Koerfgen
   7 * Copyright (c) 2001 Ralf Baechle
   8 * Copyright (c) 2002 Thiemo Seufer
   9 */
  10#include <linux/tty.h>
  11#include <linux/major.h>
  12#include <linux/init.h>
  13#include <linux/console.h>
  14#include <linux/fs.h>
  15#include <asm/setup.h>
  16#include <asm/sgialib.h>
  17
  18static void prom_console_write(struct console *co, const char *s,
  19                               unsigned count)
  20{
  21        /* Do each character */
  22        while (count--) {
  23                if (*s == '\n')
  24                        prom_putchar('\r');
  25                prom_putchar(*s++);
  26        }
  27}
  28
  29static int prom_console_setup(struct console *co, char *options)
  30{
  31        if (prom_flags & PROM_FLAG_USE_AS_CONSOLE)
  32                return 0;
  33        return -ENODEV;
  34}
  35
  36static struct console arc_cons = {
  37        .name           = "arc",
  38        .write          = prom_console_write,
  39        .setup          = prom_console_setup,
  40        .flags          = CON_PRINTBUFFER,
  41        .index          = -1,
  42};
  43
  44/*
  45 *    Register console.
  46 */
  47
  48static int __init arc_console_init(void)
  49{
  50        register_console(&arc_cons);
  51
  52        return 0;
  53}
  54console_initcall(arc_console_init);
  55