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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);
- return 0;
- }
- console_initcall(hvc_sbi_console_init);
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