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  */
  40 static 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  */
  50 static 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
  59 void __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  */
  69 static int __init
  70 iq80321_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
  99 static 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
 107 static 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
 116 subsys_initcall(iq80321_pci_init);
 117
 118
 119 /*
 120  * IQ80321 machine initialisation.
 121  */
 122 static struct physmap_flash_data iq80321_flash_data = {
 123         .width          = 1,
 124 };
 125
 126 static struct resource iq80321_flash_resource = {
 127         .start          = 0xf0000000,
 128         .end            = 0xf07fffff,
 129         .flags          = IORESOURCE_MEM,
 130 };
 131
 132 static 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
 142 static 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
 155 static struct resource iq80321_uart_resource = {
 156         .start          = IQ80321_UART,
 157         .end            = IQ80321_UART + 7,
 158         .flags          = IORESOURCE_MEM,
 159 };
 160
 161 static 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
 171 static 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
 182 MACHINE_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,
 190 MACHINE_END