i386/linux/linux-2.3.21/arch/m68k/sun3x/config.c

   1 /*
   2  * Setup kernel for a Sun3x machine
   3  *
   4  * (C) 1999 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
   5  *
   6  * based on code from Oliver Jowett <oliver@jowett.manawatu.gen.nz>
   7  */
   8
   9 #include <linux/types.h>
  10 #include <linux/mm.h>
  11 #include <linux/console.h>
  12 #include <linux/init.h>
  13
  14 #include <asm/system.h>
  15 #include <asm/machdep.h>
  16 #include <asm/irq.h>
  17 #include <asm/sun3x.h>
  18
  19 #include "time.h"
  20
  21 static volatile unsigned char *sun3x_intreg = (unsigned char *)SUN3X_INTREG;
  22 extern int serial_console;
  23
  24 void sun3x_halt(void)
  25 {
  26     /* Disable interrupts */
  27     cli();
  28
  29     /* we can't drop back to PROM, so we loop here */
  30     for (;;);
  31 }
  32
  33 void sun3x_reboot(void)
  34 {
  35     /* This never returns, don't bother saving things */
  36     cli();
  37
  38     /* no idea, whether this works */
  39     asm ("reset");
  40 }
  41
  42 int __init sun3x_keyb_init(void)
  43 {
  44     return 0;
  45 }
  46
  47 int sun3x_kbdrate(struct kbd_repeat *r)
  48 {
  49     return 0;
  50 }
  51
  52 void sun3x_kbd_leds(unsigned int i)
  53 {
  54
  55 }
  56
  57 static void sun3x_badint (int irq, void *dev_id, struct pt_regs *fp)
  58 {
  59     printk ("received spurious interrupt %d\n",irq);
  60     num_spurious += 1;
  61 }
  62
  63 void (*sun3x_default_handler[SYS_IRQS])(int, void *, struct pt_regs *) = {
  64     sun3x_badint, sun3x_badint, sun3x_badint, sun3x_badint,
  65     sun3x_badint, sun3x_badint, sun3x_badint, sun3x_badint
  66 };
  67
  68 void sun3x_enable_irq(unsigned int irq)
  69 {
  70     *sun3x_intreg |= (1 << irq);
  71 }
  72
  73 void sun3x_disable_irq(unsigned int irq)
  74 {
  75     *sun3x_intreg &= ~(1 << irq);
  76 }
  77
  78 void __init sun3x_init_IRQ(void)
  79 {
  80     /* disable all interrupts initially */
  81     *sun3x_intreg = 1;  /* master enable only */
  82 }
  83
  84 int sun3x_get_irq_list(char *buf)
  85 {
  86     return 0;
  87 }
  88
  89 /*
  90  *  Setup the sun3x configuration info
  91  */
  92 void __init config_sun3x(void)
  93 {
  94     mach_get_irq_list    = sun3x_get_irq_list;
  95     mach_max_dma_address = 0xffffffff; /* we can DMA anywhere, whee */
  96
  97     mach_keyb_init       = sun3x_keyb_init;
  98     mach_kbdrate         = sun3x_kbdrate;
  99     mach_kbd_leds        = sun3x_kbd_leds;
 100
 101     mach_sched_init      = sun3x_sched_init;
 102     mach_init_IRQ        = sun3x_init_IRQ;
 103     enable_irq           = sun3x_enable_irq;
 104     disable_irq          = sun3x_disable_irq;
 105     mach_request_irq     = sys_request_irq;
 106     mach_free_irq        = sys_free_irq;
 107     mach_default_handler = &sun3x_default_handler;
 108     mach_gettimeoffset   = sun3x_gettimeoffset;
 109     mach_reset           = sun3x_reboot;
 110
 111     mach_gettod          = sun3x_gettod;
 112
 113     switch (*(unsigned char *)SUN3X_EEPROM_CONS) {
 114         case 0x10:
 115             serial_console = 1;
 116             conswitchp = NULL;
 117             break;
 118         case 0x11:
 119             serial_console = 2;
 120             conswitchp = NULL;
 121             break;
 122         default:
 123             serial_console = 0;
 124             conswitchp = &dummy_con;
 125             break;
 126     }
 127
 128 }