1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License.  See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2013 Cavium, Inc.
7 */
8
9#include <linux/kernel.h>
10#include <linux/virtio_console.h>
11#include <linux/kvm_para.h>
12
13/*
14 * Emit one character to the boot console.
15 */
16int prom_putchar(char c)
17{
18	kvm_hypercall3(KVM_HC_MIPS_CONSOLE_OUTPUT, 0 /*  port 0 */,
19		(unsigned long)&c, 1 /* len == 1 */);
20
21	return 1;
22}
23
24#ifdef CONFIG_VIRTIO_CONSOLE
25static int paravirt_put_chars(u32 vtermno, const char *buf, int count)
26{
27	kvm_hypercall3(KVM_HC_MIPS_CONSOLE_OUTPUT, vtermno,
28		(unsigned long)buf, count);
29
30	return count;
31}
32
33static int __init paravirt_cons_init(void)
34{
35	virtio_cons_early_init(paravirt_put_chars);
36	return 0;
37}
38core_initcall(paravirt_cons_init);
39
40#endif
41