arch/sh/boards/bigsur/setup.c

   1 /*
   2  *
   3  * By Dustin McIntire (dustin@sensoria.com) (c)2001
   4  *
   5  * Setup and IRQ handling code for the HD64465 companion chip.
   6  * by Greg Banks <gbanks@pocketpenguins.com>
   7  * Copyright (c) 2000 PocketPenguins Inc
   8  *
   9  * Derived from setup_hd64465.c which bore the message:
  10  * Greg Banks <gbanks@pocketpenguins.com>
  11  * Copyright (c) 2000 PocketPenguins Inc and
  12  * Copyright (C) 2000 YAEGASHI Takeshi
  13  * and setup_cqreek.c which bore message:
  14  * Copyright (C) 2000  Niibe Yutaka
  15  *
  16  * May be copied or modified under the terms of the GNU General Public
  17  * License.  See linux/COPYING for more information.
  18  *
  19  * Setup functions for a Hitachi Big Sur Evaluation Board.
  20  *
  21  */
  22
  23 #include <linux/config.h>
  24 #include <linux/sched.h>
  25 #include <linux/module.h>
  26 #include <linux/kernel.h>
  27 #include <linux/param.h>
  28 #include <linux/ioport.h>
  29 #include <linux/interrupt.h>
  30 #include <linux/init.h>
  31 #include <linux/irq.h>
  32 #include <linux/bitops.h>
  33
  34 #include <asm/io.h>
  35 #include <asm/irq.h>
  36 #include <asm/machvec.h>
  37 #include <asm/bigsur/io.h>
  38 #include <asm/hd64465/hd64465.h>
  39 #include <asm/bigsur/bigsur.h>
  40
  41 /*===========================================================*/
  42 //              Big Sur Init Routines
  43 /*===========================================================*/
  44
  45 const char *get_system_type(void)
  46 {
  47         return "Big Sur";
  48 }
  49
  50 /*
  51  * The Machine Vector
  52  */
  53 extern void heartbeat_bigsur(void);
  54 extern void init_bigsur_IRQ(void);
  55
  56 struct sh_machine_vector mv_bigsur __initmv = {
  57         .mv_nr_irqs             = NR_IRQS,     // Defined in <asm/irq.h>
  58
  59         .mv_isa_port2addr       = bigsur_isa_port2addr,
  60         .mv_irq_demux           = bigsur_irq_demux,
  61
  62         .mv_init_irq            = init_bigsur_IRQ,
  63 #ifdef CONFIG_HEARTBEAT
  64         .mv_heartbeat           = heartbeat_bigsur,
  65 #endif
  66 };
  67 ALIAS_MV(bigsur)
  68
  69 int __init platform_setup(void)
  70 {
  71         /* Mask all 2nd level IRQ's */
  72         outb(-1,BIGSUR_IMR0);
  73         outb(-1,BIGSUR_IMR1);
  74         outb(-1,BIGSUR_IMR2);
  75         outb(-1,BIGSUR_IMR3);
  76
  77         /* Mask 1st level interrupts */
  78         outb(-1,BIGSUR_IRLMR0);
  79         outb(-1,BIGSUR_IRLMR1);
  80
  81 #if defined (CONFIG_HD64465) && defined (CONFIG_SERIAL)
  82         /* remap IO ports for first ISA serial port to HD64465 UART */
  83         bigsur_port_map(0x3f8, 8, CONFIG_HD64465_IOBASE + 0x8000, 1);
  84 #endif /* CONFIG_HD64465 && CONFIG_SERIAL */
  85         /* TODO: setup IDE registers */
  86         bigsur_port_map(BIGSUR_IDECTL_IOPORT, 2, BIGSUR_ICTL, 8);
  87         /* Setup the Ethernet port to BIGSUR_ETHER_IOPORT */
  88         bigsur_port_map(BIGSUR_ETHER_IOPORT, 16, BIGSUR_ETHR+BIGSUR_ETHER_IOPORT, 0);
  89         /* set page to 1 */
  90         outw(1, BIGSUR_ETHR+0xe);
  91         /* set the IO port to BIGSUR_ETHER_IOPORT */
  92         outw(BIGSUR_ETHER_IOPORT<<3, BIGSUR_ETHR+0x2);
  93
  94         return 0;
  95 }
  96