arch/mips/fw/arc/arc_con.c

   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/sgialib.h>
  16
  17 static void prom_console_write(struct console *co, const char *s,
  18                                unsigned count)
  19 {
  20         /* Do each character */
  21         while (count--) {
  22                 if (*s == '\n')
  23                         prom_putchar('\r');
  24                 prom_putchar(*s++);
  25         }
  26 }
  27
  28 static int prom_console_setup(struct console *co, char *options)
  29 {
  30         return !(prom_flags & PROM_FLAG_USE_AS_CONSOLE);
  31 }
  32
  33 static struct console arc_cons = {
  34         .name           = "arc",
  35         .write          = prom_console_write,
  36         .setup          = prom_console_setup,
  37         .flags          = CON_PRINTBUFFER,
  38         .index          = -1,
  39 };
  40
  41 /*
  42  *    Register console.
  43  */
  44
  45 static int __init arc_console_init(void)
  46 {
  47         register_console(&arc_cons);
  48
  49         return 0;
  50 }
  51 console_initcall(arc_console_init);