arch/mips/jazz/setup.c

   1 /*
   2  * Setup pointers to hardware-dependent routines.
   3  *
   4  * This file is subject to the terms and conditions of the GNU General Public
   5  * License.  See the file "COPYING" in the main directory of this archive
   6  * for more details.
   7  *
   8  * Copyright (C) 1996, 1997, 1998, 2001 by Ralf Baechle
   9  * Copyright (C) 2001 MIPS Technologies, Inc.
  10  */
  11 #include <linux/config.h>
  12 #include <linux/eisa.h>
  13 #include <linux/hdreg.h>
  14 #include <linux/init.h>
  15 #include <linux/ioport.h>
  16 #include <linux/sched.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/mm.h>
  19 #include <linux/console.h>
  20 #include <linux/fb.h>
  21 #include <linux/ide.h>
  22 #include <asm/bootinfo.h>
  23 #include <asm/irq.h>
  24 #include <asm/jazz.h>
  25 #include <asm/jazzdma.h>
  26 #include <asm/ptrace.h>
  27 #include <asm/reboot.h>
  28 #include <asm/io.h>
  29 #include <asm/pgtable.h>
  30 #include <asm/time.h>
  31 #include <asm/traps.h>
  32
  33 extern asmlinkage void jazz_handle_int(void);
  34
  35 extern void jazz_machine_restart(char *command);
  36 extern void jazz_machine_halt(void);
  37 extern void jazz_machine_power_off(void);
  38
  39 static void __init jazz_time_init(struct irqaction *irq)
  40 {
  41         /* set the clock to 100 Hz */
  42         r4030_write_reg32(JAZZ_TIMER_INTERVAL, 9);
  43         setup_irq(JAZZ_TIMER_IRQ, irq);
  44 }
  45
  46 static struct resource jazz_io_resources[] = {
  47         { "dma1", 0x00, 0x1f, IORESOURCE_BUSY },
  48         { "timer", 0x40, 0x5f, IORESOURCE_BUSY },
  49         { "dma page reg", 0x80, 0x8f, IORESOURCE_BUSY },
  50         { "dma2", 0xc0, 0xdf, IORESOURCE_BUSY },
  51 };
  52
  53 static void __init jazz_setup(void)
  54 {
  55         int i;
  56
  57         /* Map 0xe0000000 -> 0x0:800005C0, 0xe0010000 -> 0x1:30000580 */
  58         add_wired_entry (0x02000017, 0x03c00017, 0xe0000000, PM_64K);
  59
  60         /* Map 0xe2000000 -> 0x0:900005C0, 0xe3010000 -> 0x0:910005C0 */
  61         add_wired_entry (0x02400017, 0x02440017, 0xe2000000, PM_16M);
  62
  63         /* Map 0xe4000000 -> 0x0:600005C0, 0xe4100000 -> 400005C0 */
  64         add_wired_entry (0x01800017, 0x01000017, 0xe4000000, PM_4M);
  65
  66         set_io_port_base(JAZZ_PORT_BASE);
  67 #ifdef CONFIG_EISA
  68         if (mips_machtype == MACH_MIPS_MAGNUM_4000)
  69                 EISA_bus = 1;
  70 #endif
  71         isa_slot_offset = 0xe3000000;
  72
  73         /* request I/O space for devices used on all i[345]86 PCs */
  74         for (i = 0; i < ARRAY_SIZE(jazz_io_resources); i++)
  75                 request_resource(&ioport_resource, jazz_io_resources + i);
  76
  77         board_timer_setup = jazz_time_init;
  78         /* The RTC is outside the port address space */
  79
  80         _machine_restart = jazz_machine_restart;
  81         _machine_halt = jazz_machine_halt;
  82         _machine_power_off = jazz_machine_power_off;
  83
  84 #warning "Somebody should check if screen_info is ok for Jazz."
  85
  86         screen_info = (struct screen_info) {
  87                 0, 0,           /* orig-x, orig-y */
  88                 0,              /* unused */
  89                 0,              /* orig_video_page */
  90                 0,              /* orig_video_mode */
  91                 160,            /* orig_video_cols */
  92                 0, 0, 0,        /* unused, ega_bx, unused */
  93                 64,             /* orig_video_lines */
  94                 0,              /* orig_video_isVGA */
  95                 16              /* orig_video_points */
  96         };
  97
  98         vdma_init();
  99 }
 100
 101 early_initcall(jazz_setup);