arch/arm/mach-iop33x/iq80332.c

   1 /*
   2  * arch/arm/mach-iop33x/iq80332.c
   3  *
   4  * Board support code for the Intel IQ80332 platform.
   5  *
   6  * Author: Dave Jiang <dave.jiang@intel.com>
   7  * Copyright (C) 2004 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/serial_core.h>
  21 #include <linux/serial_8250.h>
  22 #include <linux/mtd/physmap.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/io.h>
  25 #include <mach/hardware.h>
  26 #include <asm/irq.h>
  27 #include <asm/mach/arch.h>
  28 #include <asm/mach/map.h>
  29 #include <asm/mach/pci.h>
  30 #include <asm/mach/time.h>
  31 #include <asm/mach-types.h>
  32 #include <asm/page.h>
  33 #include <asm/pgtable.h>
  34 #include <mach/time.h>
  35
  36 /*
  37  * IQ80332 timer tick configuration.
  38  */
  39 static void __init iq80332_timer_init(void)
  40 {
  41         /* D-Step parts and the iop333 run at a higher internal bus frequency */
  42         if (*IOP3XX_ATURID >= 0xa || *IOP3XX_ATUDID == 0x374)
  43                 iop_init_time(333000000);
  44         else
  45                 iop_init_time(266000000);
  46 }
  47
  48
  49 /*
  50  * IQ80332 PCI.
  51  */
  52 static int __init
  53 iq80332_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  54 {
  55         int irq;
  56
  57         if (slot == 4 && pin == 1) {
  58                 /* PCI-X Slot INTA */
  59                 irq = IRQ_IOP33X_XINT0;
  60         } else if (slot == 4 && pin == 2) {
  61                 /* PCI-X Slot INTB */
  62                 irq = IRQ_IOP33X_XINT1;
  63         } else if (slot == 4 && pin == 3) {
  64                 /* PCI-X Slot INTC */
  65                 irq = IRQ_IOP33X_XINT2;
  66         } else if (slot == 4 && pin == 4) {
  67                 /* PCI-X Slot INTD */
  68                 irq = IRQ_IOP33X_XINT3;
  69         } else if (slot == 6) {
  70                 /* GigE */
  71                 irq = IRQ_IOP33X_XINT2;
  72         } else {
  73                 printk(KERN_ERR "iq80332_pci_map_irq() called for unknown "
  74                         "device PCI:%d:%d:%d\n", dev->bus->number,
  75                         PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
  76                 irq = -1;
  77         }
  78
  79         return irq;
  80 }
  81
  82 static struct hw_pci iq80332_pci __initdata = {
  83         .nr_controllers = 1,
  84         .ops            = &iop3xx_ops,
  85         .setup          = iop3xx_pci_setup,
  86         .preinit        = iop3xx_pci_preinit_cond,
  87         .map_irq        = iq80332_pci_map_irq,
  88 };
  89
  90 static int __init iq80332_pci_init(void)
  91 {
  92         if ((iop3xx_get_init_atu() == IOP3XX_INIT_ATU_ENABLE) &&
  93                 machine_is_iq80332())
  94                 pci_common_init(&iq80332_pci);
  95
  96         return 0;
  97 }
  98
  99 subsys_initcall(iq80332_pci_init);
 100
 101
 102 /*
 103  * IQ80332 machine initialisation.
 104  */
 105 static struct physmap_flash_data iq80332_flash_data = {
 106         .width          = 1,
 107 };
 108
 109 static struct resource iq80332_flash_resource = {
 110         .start          = 0xc0000000,
 111         .end            = 0xc07fffff,
 112         .flags          = IORESOURCE_MEM,
 113 };
 114
 115 static struct platform_device iq80332_flash_device = {
 116         .name           = "physmap-flash",
 117         .id             = 0,
 118         .dev            = {
 119                 .platform_data  = &iq80332_flash_data,
 120         },
 121         .num_resources  = 1,
 122         .resource       = &iq80332_flash_resource,
 123 };
 124
 125 static struct resource iq80332_gpio_res[] = {
 126         DEFINE_RES_MEM((IOP3XX_PERIPHERAL_PHYS_BASE + 0x1780), 0x10),
 127 };
 128
 129 static void __init iq80332_init_machine(void)
 130 {
 131         platform_device_register_simple("gpio-iop", 0,
 132                                         iq80332_gpio_res,
 133                                         ARRAY_SIZE(iq80332_gpio_res));
 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(&iq80332_flash_device);
 139         platform_device_register(&iop3xx_dma_0_channel);
 140         platform_device_register(&iop3xx_dma_1_channel);
 141         platform_device_register(&iop3xx_aau_channel);
 142 }
 143
 144 MACHINE_START(IQ80332, "Intel IQ80332")
 145         /* Maintainer: Intel Corp. */
 146         .atag_offset    = 0x100,
 147         .map_io         = iop3xx_map_io,
 148         .init_irq       = iop33x_init_irq,
 149         .init_time      = iq80332_timer_init,
 150         .init_machine   = iq80332_init_machine,
 151         .restart        = iop3xx_restart,
 152 MACHINE_END