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Diffstat (limited to 'kernel/arch/mips/paravirt/serial.c')
-rw-r--r-- | kernel/arch/mips/paravirt/serial.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/kernel/arch/mips/paravirt/serial.c b/kernel/arch/mips/paravirt/serial.c new file mode 100644 index 000000000..02b665c02 --- /dev/null +++ b/kernel/arch/mips/paravirt/serial.c @@ -0,0 +1,40 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2013 Cavium, Inc. + */ + +#include <linux/kernel.h> +#include <linux/virtio_console.h> +#include <linux/kvm_para.h> + +/* + * Emit one character to the boot console. + */ +int prom_putchar(char c) +{ + kvm_hypercall3(KVM_HC_MIPS_CONSOLE_OUTPUT, 0 /* port 0 */, + (unsigned long)&c, 1 /* len == 1 */); + + return 1; +} + +#ifdef CONFIG_VIRTIO_CONSOLE +static int paravirt_put_chars(u32 vtermno, const char *buf, int count) +{ + kvm_hypercall3(KVM_HC_MIPS_CONSOLE_OUTPUT, vtermno, + (unsigned long)buf, count); + + return count; +} + +static int __init paravirt_cons_init(void) +{ + virtio_cons_early_init(paravirt_put_chars); + return 0; +} +core_initcall(paravirt_cons_init); + +#endif |