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, 2004 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>
16 #include <linux/serial.h>
17 #include <linux/serial_core.h>
18 #include <asm/serial.h>
20 /* SUPERIO uart register map */
24 volatile u8 rbr; /* read only, DLAB == 0 */
26 volatile u8 thr; /* write only, DLAB == 0 */
28 volatile u8 dll; /* DLAB == 1 */
32 volatile u8 ier; /* DLAB == 0 */
34 volatile u8 dlm; /* DLAB == 1 */
38 volatile u8 iir; /* read only */
40 volatile u8 fcr; /* write only */
62 extern unsigned long uart_base;
64 static inline struct ja_uartregs *console_uart(void)
66 return (struct ja_uartregs *) (uart_base + 0x23UL);
69 void prom_putchar(char c)
71 struct ja_uartregs *uart = console_uart();
73 while ((uart->iu_lsr & 0x20) == 0);
77 char __init prom_getchar(void)
82 static void inline ja_console_probe(void)
87 * Register to interrupt zero because we share the interrupt with
88 * the serial driver which we don't properly support yet.
90 memset(&up, 0, sizeof(up));
91 up.membase = (unsigned char *) uart_base + 0x23UL;
92 up.irq = JAGUAR_ATX_SERIAL1_IRQ;
93 up.uartclk = JAGUAR_ATX_UART_CLK;
96 up.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
99 if (early_serial_setup(&up))
100 printk(KERN_ERR "Early serial init of port 0 failed\n");
103 __init void ja_setup_console(void)