// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *      DECstation PROM-based early console support.
 *
 *      Copyright (C) 2004, 2007  Maciej W. Rozycki
 */
#include <linux/console.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/string.h>

#include <asm/dec/prom.h>

static void __init prom_console_write(struct console *con, const char *s,
                                      unsigned int c)
{
        char buf[81];
        unsigned int chunk = sizeof(buf) - 1;

        while (c > 0) {
                if (chunk > c)
                        chunk = c;
                memcpy(buf, s, chunk);
                buf[chunk] = '\0';
                prom_printf("%s", buf);
                s += chunk;
                c -= chunk;
        }
}

static struct console promcons __initdata = {
        .name   = "prom",
        .write  = prom_console_write,
        .flags  = CON_BOOT | CON_PRINTBUFFER,
        .index  = -1,
};

void __init register_prom_console(void)
{
        register_console(&promcons);
}