arch/sh/boards/sh2000/setup.c

   1 /*
   2  * linux/arch/sh/kernel/setup_sh2000.c
   3  *
   4  * Copyright (C) 2001  SUGIOKA Tochinobu
   5  *
   6  * SH-2000 Support.
   7  *
   8  */
   9
  10 #include <linux/config.h>
  11 #include <linux/init.h>
  12 #include <linux/irq.h>
  13
  14 #include <asm/io.h>
  15 #include <asm/machvec.h>
  16 #include <asm/mach/sh2000.h>
  17
  18 #define CF_CIS_BASE     0xb4200000
  19
  20 #define PORT_PECR       0xa4000108
  21 #define PORT_PHCR       0xa400010E
  22 #define PORT_ICR1       0xa4000010
  23 #define PORT_IRR0       0xa4000004
  24
  25 #define IDE_OFFSET      0xb6200000
  26 #define NIC_OFFSET      0xb6000000
  27 #define EXTBUS_OFFSET   0xba000000
  28
  29
  30 const char *get_system_type(void)
  31 {
  32         return "sh2000";
  33 }
  34
  35 static unsigned long sh2000_isa_port2addr(unsigned long offset)
  36 {
  37         if((offset & ~7) == 0x1f0 || offset == 0x3f6)
  38                 return IDE_OFFSET + offset;
  39         else if((offset & ~0x1f) == 0x300)
  40                 return NIC_OFFSET + offset;
  41         return EXTBUS_OFFSET + offset;
  42 }
  43
  44 /*
  45  * The Machine Vector
  46  */
  47 struct sh_machine_vector mv_sh2000 __initmv = {
  48         .mv_nr_irqs             = 80,
  49         .mv_isa_port2addr       = sh2000_isa_port2addr,
  50 };
  51 ALIAS_MV(sh2000)
  52
  53 /*
  54  * Initialize the board
  55  */
  56 int __init platform_setup(void)
  57 {
  58         /* XXX: RTC setting comes here */
  59
  60         /* These should be done by BIOS/IPL ... */
  61         /* Enable nCE2A, nCE2B output */
  62         ctrl_outw(ctrl_inw(PORT_PECR) & ~0xf00, PORT_PECR);
  63         /* Enable the Compact Flash card, and set the level interrupt */
  64         ctrl_outw(0x0042, CF_CIS_BASE+0x0200);
  65         /* Enable interrupt */
  66         ctrl_outw(ctrl_inw(PORT_PHCR) & ~0x03f3, PORT_PHCR);
  67         ctrl_outw(1, PORT_ICR1);
  68         ctrl_outw(ctrl_inw(PORT_IRR0) & ~0xff3f, PORT_IRR0);
  69         printk(KERN_INFO "SH-2000 Setup...done\n");
  70         return 0;
  71 }