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/slab.h>
  22 #include <linux/serial_core.h>
  23 #include <linux/serial_8250.h>
  24 #include <linux/mtd/physmap.h>
  25 #include <linux/platform_device.h>
  26 #include <asm/hardware.h>
  27 #include <asm/io.h>
  28 #include <asm/irq.h>
  29 #include <asm/mach/arch.h>
  30 #include <asm/mach/map.h>
  31 #include <asm/mach/pci.h>
  32 #include <asm/mach/time.h>
  33 #include <asm/mach-types.h>
  34 #include <asm/page.h>
  35 #include <asm/pgtable.h>
  36 #include <asm/arch/time.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 static struct sys_timer iq80321_timer = {
  48         .init           = iq80321_timer_init,
  49         .offset         = iop_gettimeoffset,
  50 };
  51
  52
  53 /*
  54  * IQ80321 I/O.
  55  */
  56 static struct map_desc iq80321_io_desc[] __initdata = {
  57         {       /* on-board devices */
  58                 .virtual        = IQ80321_UART,
  59                 .pfn            = __phys_to_pfn(IQ80321_UART),
  60                 .length         = 0x00100000,
  61                 .type           = MT_DEVICE,
  62         },
  63 };
  64
  65 void __init iq80321_map_io(void)
  66 {
  67         iop3xx_map_io();
  68         iotable_init(iq80321_io_desc, ARRAY_SIZE(iq80321_io_desc));
  69 }
  70
  71
  72 /*
  73  * IQ80321 PCI.
  74  */
  75 static inline int __init
  76 iq80321_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  77 {
  78         int irq;
  79
  80         if ((slot == 2 || slot == 6) && pin == 1) {
  81                 /* PCI-X Slot INTA */
  82                 irq = IRQ_IOP32X_XINT2;
  83         } else if ((slot == 2 || slot == 6) && pin == 2) {
  84                 /* PCI-X Slot INTA */
  85                 irq = IRQ_IOP32X_XINT3;
  86         } else if ((slot == 2 || slot == 6) && pin == 3) {
  87                 /* PCI-X Slot INTA */
  88                 irq = IRQ_IOP32X_XINT0;
  89         } else if ((slot == 2 || slot == 6) && pin == 4) {
  90                 /* PCI-X Slot INTA */
  91                 irq = IRQ_IOP32X_XINT1;
  92         } else if (slot == 4 || slot == 8) {
  93                 /* Gig-E */
  94                 irq = IRQ_IOP32X_XINT0;
  95         } else {
  96                 printk(KERN_ERR "iq80321_pci_map_irq() called for unknown "
  97                         "device PCI:%d:%d:%d\n", dev->bus->number,
  98                         PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
  99                 irq = -1;
 100         }
 101
 102         return irq;
 103 }
 104
 105 static struct hw_pci iq80321_pci __initdata = {
 106         .swizzle        = pci_std_swizzle,
 107         .nr_controllers = 1,
 108         .setup          = iop3xx_pci_setup,
 109         .preinit        = iop3xx_pci_preinit,
 110         .scan           = iop3xx_pci_scan_bus,
 111         .map_irq        = iq80321_pci_map_irq,
 112 };
 113
 114 static int __init iq80321_pci_init(void)
 115 {
 116         if (machine_is_iq80321())
 117                 pci_common_init(&iq80321_pci);
 118
 119         return 0;
 120 }
 121
 122 subsys_initcall(iq80321_pci_init);
 123
 124
 125 /*
 126  * IQ80321 machine initialisation.
 127  */
 128 static struct physmap_flash_data iq80321_flash_data = {
 129         .width          = 1,
 130 };
 131
 132 static struct resource iq80321_flash_resource = {
 133         .start          = 0xf0000000,
 134         .end            = 0xf07fffff,
 135         .flags          = IORESOURCE_MEM,
 136 };
 137
 138 static struct platform_device iq80321_flash_device = {
 139         .name           = "physmap-flash",
 140         .id             = 0,
 141         .dev            = {
 142                 .platform_data  = &iq80321_flash_data,
 143         },
 144         .num_resources  = 1,
 145         .resource       = &iq80321_flash_resource,
 146 };
 147
 148 static struct plat_serial8250_port iq80321_serial_port[] = {
 149         {
 150                 .mapbase        = IQ80321_UART,
 151                 .membase        = (char *)IQ80321_UART,
 152                 .irq            = IRQ_IOP32X_XINT1,
 153                 .flags          = UPF_SKIP_TEST,
 154                 .iotype         = UPIO_MEM,
 155                 .regshift       = 0,
 156                 .uartclk        = 1843200,
 157         },
 158         { },
 159 };
 160
 161 static struct resource iq80321_uart_resource = {
 162         .start          = IQ80321_UART,
 163         .end            = IQ80321_UART + 7,
 164         .flags          = IORESOURCE_MEM,
 165 };
 166
 167 static struct platform_device iq80321_serial_device = {
 168         .name           = "serial8250",
 169         .id             = PLAT8250_DEV_PLATFORM,
 170         .dev            = {
 171                 .platform_data          = iq80321_serial_port,
 172         },
 173         .num_resources  = 1,
 174         .resource       = &iq80321_uart_resource,
 175 };
 176
 177 static void __init iq80321_init_machine(void)
 178 {
 179         platform_device_register(&iop3xx_i2c0_device);
 180         platform_device_register(&iop3xx_i2c1_device);
 181         platform_device_register(&iq80321_flash_device);
 182         platform_device_register(&iq80321_serial_device);
 183 }
 184
 185 MACHINE_START(IQ80321, "Intel IQ80321")
 186         /* Maintainer: Intel Corp. */
 187         .phys_io        = IQ80321_UART,
 188         .io_pg_offst    = ((IQ80321_UART) >> 18) & 0xfffc,
 189         .boot_params    = 0xa0000100,
 190         .map_io         = iq80321_map_io,
 191         .init_irq       = iop32x_init_irq,
 192         .timer          = &iq80321_timer,
 193         .init_machine   = iq80321_init_machine,
 194 MACHINE_END