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
6 * Copyright (C) 2001, 2002 Ralf Baechle
8 #include <linux/init.h>
9 #include <linux/console.h>
10 #include <linux/kdev_t.h>
11 #include <linux/major.h>
12 #include <linux/termios.h>
13 #include <linux/sched.h>
14 #include <linux/tty.h>
17 #include <asm/semaphore.h>
18 #include <asm/sn/addrs.h>
19 #include <asm/sn/sn0/hub.h>
20 #include <asm/sn/klconfig.h>
21 #include <asm/sn/ioc3.h>
22 #include <asm/sn/sn_private.h>
24 #include <linux/serial.h>
25 #include <linux/serial_core.h>
27 #define IOC3_CLK (22000000 / 3)
28 #define IOC3_FLAGS (0)
30 static inline struct ioc3_uartregs *console_uart(void)
35 nasid = (master_nasid == INVALID_NASID) ? get_nasid() : master_nasid;
36 ioc3 = (struct ioc3 *)KL_CONFIG_CH_CONS_INFO(nasid)->memory_base;
38 return &ioc3->sregs.uarta;
41 void prom_putchar(char c)
43 struct ioc3_uartregs *uart = console_uart();
45 while ((uart->iu_lsr & 0x20) == 0);
49 static void ioc3_console_write(struct console *con, const char *s, unsigned n)
59 static struct console ioc3_console = {
61 .write = ioc3_console_write,
62 .flags = CON_PRINTBUFFER | CON_BOOT,
66 __init void ip27_setup_console(void)
68 register_console(&ioc3_console);
71 void __init disable_early_printk(void)
73 unregister_console(&ioc3_console);