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 #include "gpio-iop32x.h"
  37
  38 /*
  39  * IQ80321 timer tick configuration.
  40  */
  41 static void __init iq80321_timer_init(void)
  42 {
  43         /* 33.333 MHz crystal.  */
  44         iop_init_time(200000000);
  45 }
  46
  47
  48 /*
  49  * IQ80321 I/O.
  50  */
  51 static struct map_desc iq80321_io_desc[] __initdata = {
  52         {       /* on-board devices */
  53                 .virtual        = IQ80321_UART,
  54                 .pfn            = __phys_to_pfn(IQ80321_UART),
  55                 .length         = 0x00100000,
  56                 .type           = MT_DEVICE,
  57         },
  58 };
  59
  60 void __init iq80321_map_io(void)
  61 {
  62         iop3xx_map_io();
  63         iotable_init(iq80321_io_desc, ARRAY_SIZE(iq80321_io_desc));
  64 }
  65
  66
  67 /*
  68  * IQ80321 PCI.
  69  */
  70 static int __init
  71 iq80321_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  72 {
  73         int irq;
  74
  75         if ((slot == 2 || slot == 6) && pin == 1) {
  76                 /* PCI-X Slot INTA */
  77                 irq = IRQ_IOP32X_XINT2;
  78         } else if ((slot == 2 || slot == 6) && pin == 2) {
  79                 /* PCI-X Slot INTA */
  80                 irq = IRQ_IOP32X_XINT3;
  81         } else if ((slot == 2 || slot == 6) && pin == 3) {
  82                 /* PCI-X Slot INTA */
  83                 irq = IRQ_IOP32X_XINT0;
  84         } else if ((slot == 2 || slot == 6) && pin == 4) {
  85                 /* PCI-X Slot INTA */
  86                 irq = IRQ_IOP32X_XINT1;
  87         } else if (slot == 4 || slot == 8) {
  88                 /* Gig-E */
  89                 irq = IRQ_IOP32X_XINT0;
  90         } else {
  91                 printk(KERN_ERR "iq80321_pci_map_irq() called for unknown "
  92                         "device PCI:%d:%d:%d\n", dev->bus->number,
  93                         PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
  94                 irq = -1;
  95         }
  96
  97         return irq;
  98 }
  99
 100 static struct hw_pci iq80321_pci __initdata = {
 101         .nr_controllers = 1,
 102         .ops            = &iop3xx_ops,
 103         .setup          = iop3xx_pci_setup,
 104         .preinit        = iop3xx_pci_preinit_cond,
 105         .map_irq        = iq80321_pci_map_irq,
 106 };
 107
 108 static int __init iq80321_pci_init(void)
 109 {
 110         if ((iop3xx_get_init_atu() == IOP3XX_INIT_ATU_ENABLE) &&
 111                 machine_is_iq80321())
 112                 pci_common_init(&iq80321_pci);
 113
 114         return 0;
 115 }
 116
 117 subsys_initcall(iq80321_pci_init);
 118
 119
 120 /*
 121  * IQ80321 machine initialisation.
 122  */
 123 static struct physmap_flash_data iq80321_flash_data = {
 124         .width          = 1,
 125 };
 126
 127 static struct resource iq80321_flash_resource = {
 128         .start          = 0xf0000000,
 129         .end            = 0xf07fffff,
 130         .flags          = IORESOURCE_MEM,
 131 };
 132
 133 static struct platform_device iq80321_flash_device = {
 134         .name           = "physmap-flash",
 135         .id             = 0,
 136         .dev            = {
 137                 .platform_data  = &iq80321_flash_data,
 138         },
 139         .num_resources  = 1,
 140         .resource       = &iq80321_flash_resource,
 141 };
 142
 143 static struct plat_serial8250_port iq80321_serial_port[] = {
 144         {
 145                 .mapbase        = IQ80321_UART,
 146                 .membase        = (char *)IQ80321_UART,
 147                 .irq            = IRQ_IOP32X_XINT1,
 148                 .flags          = UPF_SKIP_TEST,
 149                 .iotype         = UPIO_MEM,
 150                 .regshift       = 0,
 151                 .uartclk        = 1843200,
 152         },
 153         { },
 154 };
 155
 156 static struct resource iq80321_uart_resource = {
 157         .start          = IQ80321_UART,
 158         .end            = IQ80321_UART + 7,
 159         .flags          = IORESOURCE_MEM,
 160 };
 161
 162 static struct platform_device iq80321_serial_device = {
 163         .name           = "serial8250",
 164         .id             = PLAT8250_DEV_PLATFORM,
 165         .dev            = {
 166                 .platform_data          = iq80321_serial_port,
 167         },
 168         .num_resources  = 1,
 169         .resource       = &iq80321_uart_resource,
 170 };
 171
 172 static void __init iq80321_init_machine(void)
 173 {
 174         register_iop32x_gpio();
 175         platform_device_register(&iop3xx_i2c0_device);
 176         platform_device_register(&iop3xx_i2c1_device);
 177         platform_device_register(&iq80321_flash_device);
 178         platform_device_register(&iq80321_serial_device);
 179         platform_device_register(&iop3xx_dma_0_channel);
 180         platform_device_register(&iop3xx_dma_1_channel);
 181         platform_device_register(&iop3xx_aau_channel);
 182 }
 183
 184 MACHINE_START(IQ80321, "Intel IQ80321")
 185         /* Maintainer: Intel Corp. */
 186         .atag_offset    = 0x100,
 187         .map_io         = iq80321_map_io,
 188         .init_irq       = iop32x_init_irq,
 189         .init_time      = iq80321_timer_init,
 190         .init_machine   = iq80321_init_machine,
 191         .restart        = iop3xx_restart,
 192 MACHINE_END