| 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 | |
| 18 | static 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 | |
| 29 | static 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 | |
| 36 | static 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 | |
| 48 | static int __init arc_console_init(void) |
| 49 | { |
| 50 | register_console(&arc_cons); |
| 51 | |
| 52 | return 0; |
| 53 | } |
| 54 | console_initcall(arc_console_init); |
| 55 |