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 #include <asm/setup.h>
13
14 /*
15 * Emit one character to the boot console.
16 */
prom_putchar(char c)17 void prom_putchar(char c)
18 {
19 kvm_hypercall3(KVM_HC_MIPS_CONSOLE_OUTPUT, 0 /* port 0 */,
20 (unsigned long)&c, 1 /* len == 1 */);
21 }
22
23 #ifdef CONFIG_VIRTIO_CONSOLE
paravirt_put_chars(u32 vtermno,const char * buf,int count)24 static int paravirt_put_chars(u32 vtermno, const char *buf, int count)
25 {
26 kvm_hypercall3(KVM_HC_MIPS_CONSOLE_OUTPUT, vtermno,
27 (unsigned long)buf, count);
28
29 return count;
30 }
31
paravirt_cons_init(void)32 static int __init paravirt_cons_init(void)
33 {
34 virtio_cons_early_init(paravirt_put_chars);
35 return 0;
36 }
37 core_initcall(paravirt_cons_init);
38
39 #endif
40
