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