LXR linux/arch/arm/mach-iop32x/iq80321.c

   1/*
   2 * arch/arm/mach-iop32x/iq80321.c
   3 *
   4 * Board support code for the Intel IQ80321 platform.
   5 *
   6 * Author: Rory Bolt <rorybolt@pacbell.net>
   7 * Copyright (C) 2002 Rory Bolt
   8 * Copyright (C) 2004 Intel Corp.
   9 *
  10 * This program is free software; you can redistribute it and/or modify it
  11 * under the terms of the GNU General Public License as published by the
  12 * Free Software Foundation; either version 2 of the License, or (at your
  13 * option) any later version.
  14 */
  15
  16#include <linux/mm.h>
  17#include <linux/init.h>
  18#include <linux/kernel.h>
  19#include <linux/pci.h>
  20#include <linux/string.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 <linux/io.h>
  26#include <mach/hardware.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 <mach/time.h>
  36
  37/*
  38 * IQ80321 timer tick configuration.
  39 */
  40static void __init iq80321_timer_init(void)
  41{
  42        /* 33.333 MHz crystal.  */
  43        iop_init_time(200000000);
  44}
  45
  46
  47/*
  48 * IQ80321 I/O.
  49 */
  50static struct map_desc iq80321_io_desc[] __initdata = {
  51        {       /* on-board devices */
  52                .virtual        = IQ80321_UART,
  53                .pfn            = __phys_to_pfn(IQ80321_UART),
  54                .length         = 0x00100000,
  55                .type           = MT_DEVICE,
  56        },
  57};
  58
  59void __init iq80321_map_io(void)
  60{
  61        iop3xx_map_io();
  62        iotable_init(iq80321_io_desc, ARRAY_SIZE(iq80321_io_desc));
  63}
  64
  65
  66/*
  67 * IQ80321 PCI.
  68 */
  69static int __init
  70iq80321_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  71{
  72        int irq;
  73
  74        if ((slot == 2 || slot == 6) && pin == 1) {
  75                /* PCI-X Slot INTA */
  76                irq = IRQ_IOP32X_XINT2;
  77        } else if ((slot == 2 || slot == 6) && pin == 2) {
  78                /* PCI-X Slot INTA */
  79                irq = IRQ_IOP32X_XINT3;
  80        } else if ((slot == 2 || slot == 6) && pin == 3) {
  81                /* PCI-X Slot INTA */
  82                irq = IRQ_IOP32X_XINT0;
  83        } else if ((slot == 2 || slot == 6) && pin == 4) {
  84                /* PCI-X Slot INTA */
  85                irq = IRQ_IOP32X_XINT1;
  86        } else if (slot == 4 || slot == 8) {
  87                /* Gig-E */
  88                irq = IRQ_IOP32X_XINT0;
  89        } else {
  90                printk(KERN_ERR "iq80321_pci_map_irq() called for unknown "
  91                        "device PCI:%d:%d:%d\n", dev->bus->number,
  92                        PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
  93                irq = -1;
  94        }
  95
  96        return irq;
  97}
  98
  99static struct hw_pci iq80321_pci __initdata = {
 100        .nr_controllers = 1,
 101        .ops            = &iop3xx_ops,
 102        .setup          = iop3xx_pci_setup,
 103        .preinit        = iop3xx_pci_preinit_cond,
 104        .map_irq        = iq80321_pci_map_irq,
 105};
 106
 107static int __init iq80321_pci_init(void)
 108{
 109        if ((iop3xx_get_init_atu() == IOP3XX_INIT_ATU_ENABLE) &&
 110                machine_is_iq80321())
 111                pci_common_init(&iq80321_pci);
 112
 113        return 0;
 114}
 115
 116subsys_initcall(iq80321_pci_init);
 117
 118
 119/*
 120 * IQ80321 machine initialisation.
 121 */
 122static struct physmap_flash_data iq80321_flash_data = {
 123        .width          = 1,
 124};
 125
 126static struct resource iq80321_flash_resource = {
 127        .start          = 0xf0000000,
 128        .end            = 0xf07fffff,
 129        .flags          = IORESOURCE_MEM,
 130};
 131
 132static struct platform_device iq80321_flash_device = {
 133        .name           = "physmap-flash",
 134        .id             = 0,
 135        .dev            = {
 136                .platform_data  = &iq80321_flash_data,
 137        },
 138        .num_resources  = 1,
 139        .resource       = &iq80321_flash_resource,
 140};
 141
 142static struct plat_serial8250_port iq80321_serial_port[] = {
 143        {
 144                .mapbase        = IQ80321_UART,
 145                .membase        = (char *)IQ80321_UART,
 146                .irq            = IRQ_IOP32X_XINT1,
 147                .flags          = UPF_SKIP_TEST,
 148                .iotype         = UPIO_MEM,
 149                .regshift       = 0,
 150                .uartclk        = 1843200,
 151        },
 152        { },
 153};
 154
 155static struct resource iq80321_uart_resource = {
 156        .start          = IQ80321_UART,
 157        .end            = IQ80321_UART + 7,
 158        .flags          = IORESOURCE_MEM,
 159};
 160
 161static struct platform_device iq80321_serial_device = {
 162        .name           = "serial8250",
 163        .id             = PLAT8250_DEV_PLATFORM,
 164        .dev            = {
 165                .platform_data          = iq80321_serial_port,
 166        },
 167        .num_resources  = 1,
 168        .resource       = &iq80321_uart_resource,
 169};
 170
 171static void __init iq80321_init_machine(void)
 172{
 173        platform_device_register(&iop3xx_i2c0_device);
 174        platform_device_register(&iop3xx_i2c1_device);
 175        platform_device_register(&iq80321_flash_device);
 176        platform_device_register(&iq80321_serial_device);
 177        platform_device_register(&iop3xx_dma_0_channel);
 178        platform_device_register(&iop3xx_dma_1_channel);
 179        platform_device_register(&iop3xx_aau_channel);
 180}
 181
 182MACHINE_START(IQ80321, "Intel IQ80321")
 183        /* Maintainer: Intel Corp. */
 184        .atag_offset    = 0x100,
 185        .map_io         = iq80321_map_io,
 186        .init_irq       = iop32x_init_irq,
 187        .init_time      = iq80321_timer_init,
 188        .init_machine   = iq80321_init_machine,
 189        .restart        = iop3xx_restart,
 190MACHINE_END
 191