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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2008 David Gibson, IBM Corporation
* Copyright (C) 2012 Regents of the University of California
* Copyright (C) 2017 SiFive
*/
#include <linux/console.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/moduleparam.h>
#include <linux/types.h>
#include <asm/sbi.h>
#include "hvc_console.h"
static int hvc_sbi_tty_put(uint32_t vtermno, const char *buf, int count)
{
int i;
for (i = 0; i < count; i++)
sbi_console_putchar(buf[i]);
return i;
}
static int hvc_sbi_tty_get(uint32_t vtermno, char *buf, int count)
{
int i, c;
for (i = 0; i < count; i++) {
c = sbi_console_getchar();
if (c < 0)
break;
buf[i] = c;
}
return i;
}
static const struct hv_ops hvc_sbi_ops = {
.get_chars = hvc_sbi_tty_get,
.put_chars = hvc_sbi_tty_put,
};
static int __init hvc_sbi_init(void)
{
return PTR_ERR_OR_ZERO(hvc_alloc(0, 0, &hvc_sbi_ops, 16));
}
device_initcall(hvc_sbi_init);
static int __init hvc_sbi_console_init(void)
{
hvc_instantiate(0, 0, &hvc_sbi_ops);
add_preferred_console("hvc", 0, NULL);
return 0;
}
console_initcall(hvc_sbi_console_init);
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