1 /*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2001, 2002 Ralf Baechle
7 */
8
9 #include <asm/page.h>
10 #include <asm/setup.h>
11 #include <asm/sn/addrs.h>
12 #include <asm/sn/agent.h>
13 #include <asm/sn/klconfig.h>
14 #include <asm/sn/ioc3.h>
15
16 #include <linux/serial.h>
17 #include <linux/serial_core.h>
18
19 #include "ip27-common.h"
20
21 #define IOC3_CLK (22000000 / 3)
22 #define IOC3_FLAGS (0)
23
24 static inline struct ioc3_uartregs *console_uart(void)
25 {
26 struct ioc3 *ioc3;
27 nasid_t nasid;
28
29 nasid = (master_nasid == INVALID_NASID) ? get_nasid() : master_nasid;
30 ioc3 = (struct ioc3 *)KL_CONFIG_CH_CONS_INFO(nasid)->memory_base;
31
32 return &ioc3->sregs.uarta;
33 }
34
35 void prom_putchar(char c)
36 {
37 struct ioc3_uartregs *uart = console_uart();
38
39 while ((readb(&uart->iu_lsr) & 0x20) == 0)
40 ;
41 writeb(c, &uart->iu_thr);
42 }
43
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