| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 | */ |
| 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 |
| 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 | |
| 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 |