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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* DECstation PROM-based early console support.
*
* Copyright (C) 2004, 2007, 2026 Maciej W. Rozycki
*/
#include <linux/bug.h>
#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)
{
static char buf[81] __initdata = { 0 };
unsigned int chunk = sizeof(buf) - 1;
BUG_ON((long)buf != (int)(long)buf);
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);
}
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