release/src-rt-6.x/linux/linux-2.6/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/eisa.h>
  12 #include <linux/hdreg.h>
  13 #include <linux/init.h>
  14 #include <linux/ioport.h>
  15 #include <linux/sched.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/mm.h>
  18 #include <linux/console.h>
  19 #include <linux/fb.h>
  20 #include <linux/ide.h>
  21 #include <linux/pm.h>
  22 #include <linux/screen_info.h>
  23
  24 #include <asm/bootinfo.h>
  25 #include <asm/irq.h>
  26 #include <asm/jazz.h>
  27 #include <asm/jazzdma.h>
  28 #include <asm/reboot.h>
  29 #include <asm/io.h>
  30 #include <asm/pgtable.h>
  31 #include <asm/time.h>
  32 #include <asm/traps.h>
  33
  34 extern asmlinkage void jazz_handle_int(void);
  35
  36 extern void jazz_machine_restart(char *command);
  37 extern void jazz_machine_halt(void);
  38 extern void jazz_machine_power_off(void);
  39
  40 void __init plat_timer_setup(struct irqaction *irq)
  41 {
  42         /* set the clock to 100 Hz */
  43         r4030_write_reg32(JAZZ_TIMER_INTERVAL, 9);
  44         setup_irq(JAZZ_TIMER_IRQ, irq);
  45 }
  46
  47 static struct resource jazz_io_resources[] = {
  48         {
  49                 .start  = 0x00,
  50                 .end    = 0x1f,
  51                 .name   = "dma1",
  52                 .flags  = IORESOURCE_BUSY
  53         }, {
  54                 .start  = 0x40,
  55                 .end    = 0x5f,
  56                 .name   = "timer",
  57                 .flags  = IORESOURCE_BUSY
  58         }, {
  59                 .start  = 0x80,
  60                 .end    = 0x8f,
  61                 .name   = "dma page reg",
  62                 .flags  = IORESOURCE_BUSY
  63         }, {
  64                 .start  = 0xc0,
  65                 .end    = 0xdf,
  66                 .name   = "dma2",
  67                 .flags  = IORESOURCE_BUSY
  68         }
  69 };
  70
  71 void __init plat_mem_setup(void)
  72 {
  73         int i;
  74
  75         /* Map 0xe0000000 -> 0x0:800005C0, 0xe0010000 -> 0x1:30000580 */
  76         add_wired_entry (0x02000017, 0x03c00017, 0xe0000000, PM_64K);
  77
  78         /* Map 0xe2000000 -> 0x0:900005C0, 0xe3010000 -> 0x0:910005C0 */
  79         add_wired_entry (0x02400017, 0x02440017, 0xe2000000, PM_16M);
  80
  81         /* Map 0xe4000000 -> 0x0:600005C0, 0xe4100000 -> 400005C0 */
  82         add_wired_entry (0x01800017, 0x01000017, 0xe4000000, PM_4M);
  83
  84         set_io_port_base(JAZZ_PORT_BASE);
  85 #ifdef CONFIG_EISA
  86         if (mips_machtype == MACH_MIPS_MAGNUM_4000)
  87                 EISA_bus = 1;
  88 #endif
  89         isa_slot_offset = 0xe3000000;
  90
  91         /* request I/O space for devices used on all i[345]86 PCs */
  92         for (i = 0; i < ARRAY_SIZE(jazz_io_resources); i++)
  93                 request_resource(&ioport_resource, jazz_io_resources + i);
  94
  95         /* The RTC is outside the port address space */
  96
  97         _machine_restart = jazz_machine_restart;
  98         _machine_halt = jazz_machine_halt;
  99         pm_power_off = jazz_machine_power_off;
 100
 101         screen_info = (struct screen_info) {
 102                 .orig_video_cols        = 160,
 103                 .orig_video_lines       = 64,
 104                 .orig_video_points      = 16,
 105         };
 106
 107         vdma_init();
 108 }