i386/linux/linux-2.3.21/arch/mips/jazz/setup.c

   1 /* $Id: setup.c,v 1.20 1999/02/25 21:57:47 tsbogend Exp $
   2  *
   3  * Setup pointers to hardware-dependent routines.
   4  *
   5  * This file is subject to the terms and conditions of the GNU General Public
   6  * License.  See the file "COPYING" in the main directory of this archive
   7  * for more details.
   8  *
   9  * Copyright (C) 1996, 1997, 1998 by Ralf Baechle
  10  */
  11 #include <linux/config.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/mc146818rtc.h>
  21 #include <asm/bootinfo.h>
  22 #include <asm/keyboard.h>
  23 #include <asm/ide.h>
  24 #include <asm/irq.h>
  25 #include <asm/jazz.h>
  26 #include <asm/ptrace.h>
  27 #include <asm/reboot.h>
  28 #include <asm/io.h>
  29 #include <asm/pgtable.h>
  30
  31 /*
  32  * Initial irq handlers.
  33  */
  34 static void no_action(int cpl, void *dev_id, struct pt_regs *regs) { }
  35
  36 /*
  37  * IRQ2 is cascade interrupt to second interrupt controller
  38  */
  39 static struct irqaction irq2  = { no_action, 0, 0, "cascade", NULL, NULL};
  40
  41 extern asmlinkage void jazz_handle_int(void);
  42
  43 extern void jazz_machine_restart(char *command);
  44 extern void jazz_machine_halt(void);
  45 extern void jazz_machine_power_off(void);
  46
  47 extern struct ide_ops std_ide_ops;
  48 extern struct rtc_ops jazz_rtc_ops;
  49 extern struct kbd_ops jazz_kbd_ops;
  50 extern struct fd_ops *fd_ops;
  51 extern struct fd_ops jazz_fd_ops;
  52
  53 void (*board_time_init)(struct irqaction *irq);
  54
  55 static void __init jazz_time_init(struct irqaction *irq)
  56 {
  57         /* set the clock to 100 Hz */
  58         r4030_write_reg32(JAZZ_TIMER_INTERVAL, 9);
  59         i8259_setup_irq(JAZZ_TIMER_IRQ, irq);
  60 }
  61
  62 static void __init jazz_irq_setup(void)
  63 {
  64         set_except_vector(0, jazz_handle_int);
  65         r4030_write_reg16(JAZZ_IO_IRQ_ENABLE,
  66                           JAZZ_IE_ETHERNET |
  67                           JAZZ_IE_SCSI     |
  68                           JAZZ_IE_SERIAL1  |
  69                           JAZZ_IE_SERIAL2  |
  70                           JAZZ_IE_PARALLEL |
  71                           JAZZ_IE_FLOPPY);
  72         r4030_read_reg16(JAZZ_IO_IRQ_SOURCE); /* clear pending IRQs */
  73         r4030_read_reg32(JAZZ_R4030_INVAL_ADDR); /* clear error bits */
  74         set_cp0_status(ST0_IM, IE_IRQ4 | IE_IRQ3 | IE_IRQ2 | IE_IRQ1);
  75         /* set the clock to 100 Hz */
  76         r4030_write_reg32(JAZZ_TIMER_INTERVAL, 9);
  77         request_region(0x20, 0x20, "pic1");
  78         request_region(0xa0, 0x20, "pic2");
  79         i8259_setup_irq(2, &irq2);
  80 }
  81
  82 void __init jazz_setup(void)
  83 {
  84         add_wired_entry (0x02000017, 0x03c00017, 0xe0000000, PM_64K);
  85         add_wired_entry (0x02400017, 0x02440017, 0xe2000000, PM_16M);
  86         add_wired_entry (0x01800017, 0x01000017, 0xe4000000, PM_4M);
  87
  88         irq_setup = jazz_irq_setup;
  89         mips_io_port_base = JAZZ_PORT_BASE;
  90         isa_slot_offset = 0xe3000000;
  91         request_region(0x00,0x20,"dma1");
  92         request_region(0x40,0x20,"timer");
  93         request_region(0x80,0x10,"dma page reg");
  94         request_region(0xc0,0x20,"dma2");
  95         board_time_init = jazz_time_init;
  96         /* The RTC is outside the port address space */
  97
  98         _machine_restart = jazz_machine_restart;
  99         _machine_halt = jazz_machine_halt;
 100         _machine_power_off = jazz_machine_power_off;
 101
 102 #ifdef CONFIG_BLK_DEV_IDE
 103         ide_ops = &std_ide_ops;
 104 #endif
 105         conswitchp = &dummy_con;
 106         rtc_ops = &jazz_rtc_ops;
 107         kbd_ops = &jazz_kbd_ops;
 108         fd_ops = &jazz_fd_ops;
 109 }