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   1 /*
   2  * linux/arch/sh/boards/snapgear/setup.c
   3  *
   4  * Copyright (C) 2002  David McCullough <davidm@snapgear.com>
   5  * Copyright (C) 2003  Paul Mundt <lethal@linux-sh.org>
   6  *
   7  * Based on files with the following comments:
   8  *
   9  *           Copyright (C) 2000  Kazumoto Kojima
  10  *
  11  *           Modified for 7751 Solution Engine by
  12  *           Ian da Silva and Jeremy Siegel, 2001.
  13  */
  14 #include <linux/init.h>
  15 #include <linux/irq.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/timer.h>
  18 #include <linux/delay.h>
  19 #include <linux/module.h>
  20 #include <linux/sched.h>
  21 #include <asm/machvec.h>
  22 #include <asm/snapgear.h>
  23 #include <asm/irq.h>
  24 #include <asm/io.h>
  25 #include <asm/rtc.h>
  26 #include <asm/cpu/timer.h>
  27
  28 extern void secureedge5410_rtc_init(void);
  29 extern void pcibios_init(void);
  30
  31 /****************************************************************************/
  32 /*
  33  * EraseConfig handling functions
  34  */
  35
  36 static irqreturn_t eraseconfig_interrupt(int irq, void *dev_id)
  37 {
  38         volatile char dummy __attribute__((unused)) = * (volatile char *) 0xb8000000;
  39
  40         printk("SnapGear: erase switch interrupt!\n");
  41
  42         return IRQ_HANDLED;
  43 }
  44
  45 static int __init eraseconfig_init(void)
  46 {
  47         printk("SnapGear: EraseConfig init\n");
  48         /* Setup "EraseConfig" switch on external IRQ 0 */
  49         if (request_irq(IRL0_IRQ, eraseconfig_interrupt, IRQF_DISABLED,
  50                                 "Erase Config", NULL))
  51                 printk("SnapGear: failed to register IRQ%d for Reset witch\n",
  52                                 IRL0_IRQ);
  53         else
  54                 printk("SnapGear: registered EraseConfig switch on IRQ%d\n",
  55                                 IRL0_IRQ);
  56         return(0);
  57 }
  58
  59 module_init(eraseconfig_init);
  60
  61 /****************************************************************************/
  62 /*
  63  * Initialize IRQ setting
  64  *
  65  * IRL0 = erase switch
  66  * IRL1 = eth0
  67  * IRL2 = eth1
  68  * IRL3 = crypto
  69  */
  70
  71 static struct ipr_data ipr_irq_table[] = {
  72         { IRL0_IRQ, 0, IRL0_IPR_POS, IRL0_PRIORITY },
  73         { IRL1_IRQ, 0, IRL1_IPR_POS, IRL1_PRIORITY },
  74         { IRL2_IRQ, 0, IRL2_IPR_POS, IRL2_PRIORITY },
  75         { IRL3_IRQ, 0, IRL3_IPR_POS, IRL3_PRIORITY },
  76 };
  77
  78 static unsigned long ipr_offsets[] = {
  79         INTC_IPRD,
  80 };
  81
  82 static struct ipr_desc ipr_irq_desc = {
  83         .ipr_offsets    = ipr_offsets,
  84         .nr_offsets     = ARRAY_SIZE(ipr_offsets),
  85
  86         .ipr_data       = ipr_irq_table,
  87         .nr_irqs        = ARRAY_SIZE(ipr_irq_table),
  88
  89         .chip = {
  90                 .name   = "IPR-snapgear",
  91         },
  92 };
  93
  94 static void __init init_snapgear_IRQ(void)
  95 {
  96         /* enable individual interrupt mode for externals */
  97         ctrl_outw(ctrl_inw(INTC_ICR) | INTC_ICR_IRLM, INTC_ICR);
  98
  99         printk("Setup SnapGear IRQ/IPR ...\n");
 100
 101         register_ipr_controller(&ipr_irq_desc);
 102 }
 103
 104 /*
 105  * Initialize the board
 106  */
 107 static void __init snapgear_setup(char **cmdline_p)
 108 {
 109         board_time_init = secureedge5410_rtc_init;
 110 }
 111
 112 /*
 113  * The Machine Vector
 114  */
 115 static struct sh_machine_vector mv_snapgear __initmv = {
 116         .mv_name                = "SnapGear SecureEdge5410",
 117         .mv_setup               = snapgear_setup,
 118         .mv_nr_irqs             = 72,
 119
 120         .mv_inb                 = snapgear_inb,
 121         .mv_inw                 = snapgear_inw,
 122         .mv_inl                 = snapgear_inl,
 123         .mv_outb                = snapgear_outb,
 124         .mv_outw                = snapgear_outw,
 125         .mv_outl                = snapgear_outl,
 126
 127         .mv_inb_p               = snapgear_inb_p,
 128         .mv_inw_p               = snapgear_inw,
 129         .mv_inl_p               = snapgear_inl,
 130         .mv_outb_p              = snapgear_outb_p,
 131         .mv_outw_p              = snapgear_outw,
 132         .mv_outl_p              = snapgear_outl,
 133
 134         .mv_init_irq            = init_snapgear_IRQ,
 135 };