release/src-rt-6.x/linux/linux-2.6/arch/arm/mach-iop33x/iq80331.c

   1 /*
   2  * arch/arm/mach-iop33x/iq80331.c
   3  *
   4  * Board support code for the Intel IQ80331 platform.
   5  *
   6  * Author: Dave Jiang <dave.jiang@intel.com>
   7  * Copyright (C) 2003 Intel Corp.
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU General Public License as published by the
  11  * Free Software Foundation; either version 2 of the License, or (at your
  12  * option) any later version.
  13  */
  14
  15 #include <linux/mm.h>
  16 #include <linux/init.h>
  17 #include <linux/kernel.h>
  18 #include <linux/pci.h>
  19 #include <linux/string.h>
  20 #include <linux/slab.h>
  21 #include <linux/serial_core.h>
  22 #include <linux/serial_8250.h>
  23 #include <linux/mtd/physmap.h>
  24 #include <linux/platform_device.h>
  25 #include <asm/hardware.h>
  26 #include <asm/io.h>
  27 #include <asm/irq.h>
  28 #include <asm/mach/arch.h>
  29 #include <asm/mach/map.h>
  30 #include <asm/mach/pci.h>
  31 #include <asm/mach/time.h>
  32 #include <asm/mach-types.h>
  33 #include <asm/page.h>
  34 #include <asm/pgtable.h>
  35 #include <asm/arch/time.h>
  36
  37 /*
  38  * IQ80331 timer tick configuration.
  39  */
  40 static void __init iq80331_timer_init(void)
  41 {
  42         /* D-Step parts run at a higher internal bus frequency */
  43         if (*IOP3XX_ATURID >= 0xa)
  44                 iop_init_time(333000000);
  45         else
  46                 iop_init_time(266000000);
  47 }
  48
  49 static struct sys_timer iq80331_timer = {
  50         .init           = iq80331_timer_init,
  51         .offset         = iop_gettimeoffset,
  52 };
  53
  54
  55 /*
  56  * IQ80331 PCI.
  57  */
  58 static int __init
  59 iq80331_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  60 {
  61         int irq;
  62
  63         if (slot == 1 && pin == 1) {
  64                 /* PCI-X Slot INTA */
  65                 irq = IRQ_IOP33X_XINT1;
  66         } else if (slot == 1 && pin == 2) {
  67                 /* PCI-X Slot INTB */
  68                 irq = IRQ_IOP33X_XINT2;
  69         } else if (slot == 1 && pin == 3) {
  70                 /* PCI-X Slot INTC */
  71                 irq = IRQ_IOP33X_XINT3;
  72         } else if (slot == 1 && pin == 4) {
  73                 /* PCI-X Slot INTD */
  74                 irq = IRQ_IOP33X_XINT0;
  75         } else if (slot == 2) {
  76                 /* GigE */
  77                 irq = IRQ_IOP33X_XINT2;
  78         } else {
  79                 printk(KERN_ERR "iq80331_pci_map_irq() called for unknown "
  80                         "device PCI:%d:%d:%d\n", dev->bus->number,
  81                         PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
  82                 irq = -1;
  83         }
  84
  85         return irq;
  86 }
  87
  88 static struct hw_pci iq80331_pci __initdata = {
  89         .swizzle        = pci_std_swizzle,
  90         .nr_controllers = 1,
  91         .setup          = iop3xx_pci_setup,
  92         .preinit        = iop3xx_pci_preinit,
  93         .scan           = iop3xx_pci_scan_bus,
  94         .map_irq        = iq80331_pci_map_irq,
  95 };
  96
  97 static int __init iq80331_pci_init(void)
  98 {
  99         if ((iop3xx_get_init_atu() == IOP3XX_INIT_ATU_ENABLE) &&
 100                 machine_is_iq80331())
 101                 pci_common_init(&iq80331_pci);
 102
 103         return 0;
 104 }
 105
 106 subsys_initcall(iq80331_pci_init);
 107
 108
 109 /*
 110  * IQ80331 machine initialisation.
 111  */
 112 static struct physmap_flash_data iq80331_flash_data = {
 113         .width          = 1,
 114 };
 115
 116 static struct resource iq80331_flash_resource = {
 117         .start          = 0xc0000000,
 118         .end            = 0xc07fffff,
 119         .flags          = IORESOURCE_MEM,
 120 };
 121
 122 static struct platform_device iq80331_flash_device = {
 123         .name           = "physmap-flash",
 124         .id             = 0,
 125         .dev            = {
 126                 .platform_data  = &iq80331_flash_data,
 127         },
 128         .num_resources  = 1,
 129         .resource       = &iq80331_flash_resource,
 130 };
 131
 132 static void __init iq80331_init_machine(void)
 133 {
 134         platform_device_register(&iop3xx_i2c0_device);
 135         platform_device_register(&iop3xx_i2c1_device);
 136         platform_device_register(&iop33x_uart0_device);
 137         platform_device_register(&iop33x_uart1_device);
 138         platform_device_register(&iq80331_flash_device);
 139 }
 140
 141 MACHINE_START(IQ80331, "Intel IQ80331")
 142         /* Maintainer: Intel Corp. */
 143         .phys_io        = 0xfefff000,
 144         .io_pg_offst    = ((0xfffff000) >> 18) & 0xfffc,
 145         .boot_params    = 0x00000100,
 146         .map_io         = iop3xx_map_io,
 147         .init_irq       = iop33x_init_irq,
 148         .timer          = &iq80331_timer,
 149         .init_machine   = iq80331_init_machine,
 150 MACHINE_END