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 static struct sys_timer iq80332_timer = {
  49         .init           = iq80332_timer_init,
  50 };
  51
  52
  53 /*
  54  * IQ80332 PCI.
  55  */
  56 static int __init
  57 iq80332_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  58 {
  59         int irq;
  60
  61         if (slot == 4 && pin == 1) {
  62                 /* PCI-X Slot INTA */
  63                 irq = IRQ_IOP33X_XINT0;
  64         } else if (slot == 4 && pin == 2) {
  65                 /* PCI-X Slot INTB */
  66                 irq = IRQ_IOP33X_XINT1;
  67         } else if (slot == 4 && pin == 3) {
  68                 /* PCI-X Slot INTC */
  69                 irq = IRQ_IOP33X_XINT2;
  70         } else if (slot == 4 && pin == 4) {
  71                 /* PCI-X Slot INTD */
  72                 irq = IRQ_IOP33X_XINT3;
  73         } else if (slot == 6) {
  74                 /* GigE */
  75                 irq = IRQ_IOP33X_XINT2;
  76         } else {
  77                 printk(KERN_ERR "iq80332_pci_map_irq() called for unknown "
  78                         "device PCI:%d:%d:%d\n", dev->bus->number,
  79                         PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
  80                 irq = -1;
  81         }
  82
  83         return irq;
  84 }
  85
  86 static struct hw_pci iq80332_pci __initdata = {
  87         .nr_controllers = 1,
  88         .ops            = &iop3xx_ops,
  89         .setup          = iop3xx_pci_setup,
  90         .preinit        = iop3xx_pci_preinit_cond,
  91         .map_irq        = iq80332_pci_map_irq,
  92 };
  93
  94 static int __init iq80332_pci_init(void)
  95 {
  96         if ((iop3xx_get_init_atu() == IOP3XX_INIT_ATU_ENABLE) &&
  97                 machine_is_iq80332())
  98                 pci_common_init(&iq80332_pci);
  99
 100         return 0;
 101 }
 102
 103 subsys_initcall(iq80332_pci_init);
 104
 105
 106 /*
 107  * IQ80332 machine initialisation.
 108  */
 109 static struct physmap_flash_data iq80332_flash_data = {
 110         .width          = 1,
 111 };
 112
 113 static struct resource iq80332_flash_resource = {
 114         .start          = 0xc0000000,
 115         .end            = 0xc07fffff,
 116         .flags          = IORESOURCE_MEM,
 117 };
 118
 119 static struct platform_device iq80332_flash_device = {
 120         .name           = "physmap-flash",
 121         .id             = 0,
 122         .dev            = {
 123                 .platform_data  = &iq80332_flash_data,
 124         },
 125         .num_resources  = 1,
 126         .resource       = &iq80332_flash_resource,
 127 };
 128
 129 static void __init iq80332_init_machine(void)
 130 {
 131         platform_device_register(&iop3xx_i2c0_device);
 132         platform_device_register(&iop3xx_i2c1_device);
 133         platform_device_register(&iop33x_uart0_device);
 134         platform_device_register(&iop33x_uart1_device);
 135         platform_device_register(&iq80332_flash_device);
 136         platform_device_register(&iop3xx_dma_0_channel);
 137         platform_device_register(&iop3xx_dma_1_channel);
 138         platform_device_register(&iop3xx_aau_channel);
 139 }
 140
 141 MACHINE_START(IQ80332, "Intel IQ80332")
 142         /* Maintainer: Intel Corp. */
 143         .atag_offset    = 0x100,
 144         .map_io         = iop3xx_map_io,
 145         .init_irq       = iop33x_init_irq,
 146         .timer          = &iq80332_timer,
 147         .init_machine   = iq80332_init_machine,
 148         .restart        = iop3xx_restart,
 149 MACHINE_END