2 * arch/sh/boards/dreamcast/setup.c
4 * Hardware support for the Sega Dreamcast.
6 * Copyright (c) 2001, 2002 M. R. Brown <mrbrown@linuxdc.org>
7 * Copyright (c) 2002, 2003 Paul Mundt <lethal@linux-sh.org>
9 * This file is part of the LinuxDC project (www.linuxdc.org)
11 * Released under the terms of the GNU GPL v2.0.
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
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>
27 #include <asm/machvec.h>
28 #include <asm/machvec_init.h>
29 #include <asm/mach/sysasic.h>
31 extern struct hw_interrupt_type systemasic_int;
32 /* XXX: Move this into it's proper header. */
33 extern void (*board_time_init)(void);
34 extern void aica_time_init(void);
35 extern int gapspci_init(void);
36 extern int systemasic_irq_demux(int);
37 const char *get_system_type(void)
39 return "Sega Dreamcast";
42 struct sh_machine_vector mv_dreamcast __initmv = {
43 .mv_nr_irqs = NR_IRQS,
45 .mv_irq_demux = systemasic_irq_demux,
49 int __init platform_setup(void)
53 /* Mask all hardware events */
56 /* Acknowledge any previous events */
59 __set_io_port_base(0xa0000000);
61 /* Assign all virtual IRQs to the System ASIC int. handler */
62 for (i = HW_EVENT_IRQ_BASE; i < HW_EVENT_IRQ_MAX; i++)
63 irq_desc[i].handler = &systemasic_int;
65 board_time_init = aica_time_init;
68 if (gapspci_init() < 0)
69 printk(KERN_WARNING "GAPSPCI was not detected.\n");