1 /*
2  * arch/sh/boards/dreamcast/setup.c
3  *
4  * Hardware support for the Sega Dreamcast.
5  *
6  * Copyright (c) 2001, 2002 M. R. Brown <mrbrown@linuxdc.org>
7  * Copyright (c) 2002, 2003, 2004 Paul Mundt <lethal@linux-sh.org>
8  *
9  * This file is part of the LinuxDC project (www.linuxdc.org)
10  *
11  * Released under the terms of the GNU GPL v2.0.
12  *
13  * This file originally bore the message (with enclosed-$):
14  *	Id: setup_dc.c,v 1.5 2001/05/24 05:09:16 mrbrown Exp
15  *	SEGA Dreamcast support
16  */
17 
18 #include <linux/sched.h>
19 #include <linux/kernel.h>
20 #include <linux/param.h>
21 #include <linux/interrupt.h>
22 #include <linux/init.h>
23 #include <linux/irq.h>
24 #include <linux/device.h>
25 #include <asm/io.h>
26 #include <asm/irq.h>
27 #include <asm/rtc.h>
28 #include <asm/machvec.h>
29 #include <mach/sysasic.h>
30 
31 extern struct irq_chip systemasic_int;
32 extern void aica_time_init(void);
33 extern int systemasic_irq_demux(int);
34 
35 static void __init dreamcast_setup(char **cmdline_p)
36 {
37 	int i;
38 
39 	/* Mask all hardware events */
40 	/* XXX */
41 
42 	/* Acknowledge any previous events */
43 	/* XXX */
44 
45 	/* Assign all virtual IRQs to the System ASIC int. handler */
46 	for (i = HW_EVENT_IRQ_BASE; i < HW_EVENT_IRQ_MAX; i++)
47 		set_irq_chip_and_handler(i, &systemasic_int,
48 					 handle_level_irq);
49 
50 	board_time_init = aica_time_init;
51 }
52 
53 static struct sh_machine_vector mv_dreamcast __initmv = {
54 	.mv_name		= "Sega Dreamcast",
55 	.mv_setup		= dreamcast_setup,
56 	.mv_irq_demux		= systemasic_irq_demux,
57 };
58