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Linux/arch/arm/mach-iop33x/iq80331.c

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  1 /*
  2  * arch/arm/mach-iop33x/iq80331.c
  3  *
  4  * Board support code for the Intel IQ80331 platform.
  5  *
  6  * Author: Dave Jiang <dave.jiang@intel.com>
  7  * Copyright (C) 2003 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  * IQ80331 timer tick configuration.
 38  */
 39 static void __init iq80331_timer_init(void)
 40 {
 41         /* D-Step parts run at a higher internal bus frequency */
 42         if (*IOP3XX_ATURID >= 0xa)
 43                 iop_init_time(333000000);
 44         else
 45                 iop_init_time(266000000);
 46 }
 47 
 48 
 49 /*
 50  * IQ80331 PCI.
 51  */
 52 static int __init
 53 iq80331_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 54 {
 55         int irq;
 56 
 57         if (slot == 1 && pin == 1) {
 58                 /* PCI-X Slot INTA */
 59                 irq = IRQ_IOP33X_XINT1;
 60         } else if (slot == 1 && pin == 2) {
 61                 /* PCI-X Slot INTB */
 62                 irq = IRQ_IOP33X_XINT2;
 63         } else if (slot == 1 && pin == 3) {
 64                 /* PCI-X Slot INTC */
 65                 irq = IRQ_IOP33X_XINT3;
 66         } else if (slot == 1 && pin == 4) {
 67                 /* PCI-X Slot INTD */
 68                 irq = IRQ_IOP33X_XINT0;
 69         } else if (slot == 2) {
 70                 /* GigE */
 71                 irq = IRQ_IOP33X_XINT2;
 72         } else {
 73                 printk(KERN_ERR "iq80331_pci_map_irq() called for unknown "
 74                         "device PCI:%d:%d:%d\n", dev->bus->number,
 75                         PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
 76                 irq = -1;
 77         }
 78 
 79         return irq;
 80 }
 81 
 82 static struct hw_pci iq80331_pci __initdata = {
 83         .nr_controllers = 1,
 84         .ops            = &iop3xx_ops,
 85         .setup          = iop3xx_pci_setup,
 86         .preinit        = iop3xx_pci_preinit_cond,
 87         .map_irq        = iq80331_pci_map_irq,
 88 };
 89 
 90 static int __init iq80331_pci_init(void)
 91 {
 92         if ((iop3xx_get_init_atu() == IOP3XX_INIT_ATU_ENABLE) &&
 93                 machine_is_iq80331())
 94                 pci_common_init(&iq80331_pci);
 95 
 96         return 0;
 97 }
 98 
 99 subsys_initcall(iq80331_pci_init);
100 
101 
102 /*
103  * IQ80331 machine initialisation.
104  */
105 static struct physmap_flash_data iq80331_flash_data = {
106         .width          = 1,
107 };
108 
109 static struct resource iq80331_flash_resource = {
110         .start          = 0xc0000000,
111         .end            = 0xc07fffff,
112         .flags          = IORESOURCE_MEM,
113 };
114 
115 static struct platform_device iq80331_flash_device = {
116         .name           = "physmap-flash",
117         .id             = 0,
118         .dev            = {
119                 .platform_data  = &iq80331_flash_data,
120         },
121         .num_resources  = 1,
122         .resource       = &iq80331_flash_resource,
123 };
124 
125 static struct resource iq80331_gpio_res[] = {
126         DEFINE_RES_MEM((IOP3XX_PERIPHERAL_PHYS_BASE + 0x1780), 0x10),
127 };
128 
129 static void __init iq80331_init_machine(void)
130 {
131         platform_device_register_simple("gpio-iop", 0,
132                                         iq80331_gpio_res,
133                                         ARRAY_SIZE(iq80331_gpio_res));
134         platform_device_register(&iop3xx_i2c0_device);
135         platform_device_register(&iop3xx_i2c1_device);
136         platform_device_register(&iop33x_uart0_device);
137         platform_device_register(&iop33x_uart1_device);
138         platform_device_register(&iq80331_flash_device);
139         platform_device_register(&iop3xx_dma_0_channel);
140         platform_device_register(&iop3xx_dma_1_channel);
141         platform_device_register(&iop3xx_aau_channel);
142 }
143 
144 MACHINE_START(IQ80331, "Intel IQ80331")
145         /* Maintainer: Intel Corp. */
146         .atag_offset    = 0x100,
147         .map_io         = iop3xx_map_io,
148         .init_irq       = iop33x_init_irq,
149         .init_time      = iq80331_timer_init,
150         .init_machine   = iq80331_init_machine,
151         .restart        = iop3xx_restart,
152 MACHINE_END
153 

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