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author | James Morris <james.l.morris@oracle.com> | 2014-07-17 02:10:27 +1000 |
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committer | James Morris <james.l.morris@oracle.com> | 2014-07-17 02:10:27 +1000 |
commit | bd89bb78f35fd175db7a9cfc504d789b6ca0f7b0 (patch) | |
tree | dee9f8b31f3d6d2fb141541da88e1cc1329b017e /arch/mips/paravirt/serial.c | |
parent | Merge commit 'v3.15' into next (diff) | |
parent | Linux 3.16-rc5 (diff) | |
download | linux-dev-bd89bb78f35fd175db7a9cfc504d789b6ca0f7b0.tar.xz linux-dev-bd89bb78f35fd175db7a9cfc504d789b6ca0f7b0.zip |
Sync with the changes pushed by Serge in the last merge window.
Diffstat (limited to 'arch/mips/paravirt/serial.c')
-rw-r--r-- | arch/mips/paravirt/serial.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/mips/paravirt/serial.c b/arch/mips/paravirt/serial.c new file mode 100644 index 000000000000..02b665c02272 --- /dev/null +++ b/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 |