1// SPDX-License-Identifier: GPL-2.0
2
3#include <linux/io.h>
4
5#include <asm/sn/ioc3.h>
6
7static inline struct ioc3_uartregs *console_uart(void)
8{
9	struct ioc3 *ioc3;
10
11	ioc3 = (struct ioc3 *)((void *)(0x900000001f600000));
12	return &ioc3->sregs.uarta;
13}
14
15void prom_putchar(char c)
16{
17	struct ioc3_uartregs *uart = console_uart();
18
19	while ((readb(&uart->iu_lsr) & 0x20) == 0)
20		cpu_relax();
21
22	writeb(c, &uart->iu_thr);
23}
24