arch/arm/mach-iop32x/iq80321.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * arch/arm/mach-iop32x/iq80321.c
   4  *
   5  * Board support code for the Intel IQ80321 platform.
   6  *
   7  * Author: Rory Bolt <rorybolt@pacbell.net>
   8  * Copyright (C) 2002 Rory Bolt
   9  * Copyright (C) 2004 Intel Corp.
  10  */
  11
  12 #include <linux/mm.h>
  13 #include <linux/init.h>
  14 #include <linux/kernel.h>
  15 #include <linux/pci.h>
  16 #include <linux/string.h>
  17 #include <linux/serial_core.h>
  18 #include <linux/serial_8250.h>
  19 #include <linux/mtd/physmap.h>
  20 #include <linux/platform_device.h>
  21 #include <linux/io.h>
  22 #include <mach/hardware.h>
  23 #include <asm/irq.h>
  24 #include <asm/mach/arch.h>
  25 #include <asm/mach/map.h>
  26 #include <asm/mach/pci.h>
  27 #include <asm/mach/time.h>
  28 #include <asm/mach-types.h>
  29 #include <asm/page.h>
  30 #include <asm/pgtable.h>
  31 #include <mach/time.h>
  32 #include "gpio-iop32x.h"
  33
  34 /*
  35  * IQ80321 timer tick configuration.
  36  */
  37 static void __init iq80321_timer_init(void)
  38 {
  39         /* 33.333 MHz crystal.  */
  40         iop_init_time(200000000);
  41 }
  42
  43
  44 /*
  45  * IQ80321 I/O.
  46  */
  47 static struct map_desc iq80321_io_desc[] __initdata = {
  48         {       /* on-board devices */
  49                 .virtual        = IQ80321_UART,
  50                 .pfn            = __phys_to_pfn(IQ80321_UART),
  51                 .length         = 0x00100000,
  52                 .type           = MT_DEVICE,
  53         },
  54 };
  55
  56 void __init iq80321_map_io(void)
  57 {
  58         iop3xx_map_io();
  59         iotable_init(iq80321_io_desc, ARRAY_SIZE(iq80321_io_desc));
  60 }
  61
  62
  63 /*
  64  * IQ80321 PCI.
  65  */
  66 static int __init
  67 iq80321_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  68 {
  69         int irq;
  70
  71         if ((slot == 2 || slot == 6) && pin == 1) {
  72                 /* PCI-X Slot INTA */
  73                 irq = IRQ_IOP32X_XINT2;
  74         } else if ((slot == 2 || slot == 6) && pin == 2) {
  75                 /* PCI-X Slot INTA */
  76                 irq = IRQ_IOP32X_XINT3;
  77         } else if ((slot == 2 || slot == 6) && pin == 3) {
  78                 /* PCI-X Slot INTA */
  79                 irq = IRQ_IOP32X_XINT0;
  80         } else if ((slot == 2 || slot == 6) && pin == 4) {
  81                 /* PCI-X Slot INTA */
  82                 irq = IRQ_IOP32X_XINT1;
  83         } else if (slot == 4 || slot == 8) {
  84                 /* Gig-E */
  85                 irq = IRQ_IOP32X_XINT0;
  86         } else {
  87                 printk(KERN_ERR "iq80321_pci_map_irq() called for unknown "
  88                         "device PCI:%d:%d:%d\n", dev->bus->number,
  89                         PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
  90                 irq = -1;
  91         }
  92
  93         return irq;
  94 }
  95
  96 static struct hw_pci iq80321_pci __initdata = {
  97         .nr_controllers = 1,
  98         .ops            = &iop3xx_ops,
  99         .setup          = iop3xx_pci_setup,
 100         .preinit        = iop3xx_pci_preinit_cond,
 101         .map_irq        = iq80321_pci_map_irq,
 102 };
 103
 104 static int __init iq80321_pci_init(void)
 105 {
 106         if ((iop3xx_get_init_atu() == IOP3XX_INIT_ATU_ENABLE) &&
 107                 machine_is_iq80321())
 108                 pci_common_init(&iq80321_pci);
 109
 110         return 0;
 111 }
 112
 113 subsys_initcall(iq80321_pci_init);
 114
 115
 116 /*
 117  * IQ80321 machine initialisation.
 118  */
 119 static struct physmap_flash_data iq80321_flash_data = {
 120         .width          = 1,
 121 };
 122
 123 static struct resource iq80321_flash_resource = {
 124         .start          = 0xf0000000,
 125         .end            = 0xf07fffff,
 126         .flags          = IORESOURCE_MEM,
 127 };
 128
 129 static struct platform_device iq80321_flash_device = {
 130         .name           = "physmap-flash",
 131         .id             = 0,
 132         .dev            = {
 133                 .platform_data  = &iq80321_flash_data,
 134         },
 135         .num_resources  = 1,
 136         .resource       = &iq80321_flash_resource,
 137 };
 138
 139 static struct plat_serial8250_port iq80321_serial_port[] = {
 140         {
 141                 .mapbase        = IQ80321_UART,
 142                 .membase        = (char *)IQ80321_UART,
 143                 .irq            = IRQ_IOP32X_XINT1,
 144                 .flags          = UPF_SKIP_TEST,
 145                 .iotype         = UPIO_MEM,
 146                 .regshift       = 0,
 147                 .uartclk        = 1843200,
 148         },
 149         { },
 150 };
 151
 152 static struct resource iq80321_uart_resource = {
 153         .start          = IQ80321_UART,
 154         .end            = IQ80321_UART + 7,
 155         .flags          = IORESOURCE_MEM,
 156 };
 157
 158 static struct platform_device iq80321_serial_device = {
 159         .name           = "serial8250",
 160         .id             = PLAT8250_DEV_PLATFORM,
 161         .dev            = {
 162                 .platform_data          = iq80321_serial_port,
 163         },
 164         .num_resources  = 1,
 165         .resource       = &iq80321_uart_resource,
 166 };
 167
 168 static void __init iq80321_init_machine(void)
 169 {
 170         register_iop32x_gpio();
 171         platform_device_register(&iop3xx_i2c0_device);
 172         platform_device_register(&iop3xx_i2c1_device);
 173         platform_device_register(&iq80321_flash_device);
 174         platform_device_register(&iq80321_serial_device);
 175         platform_device_register(&iop3xx_dma_0_channel);
 176         platform_device_register(&iop3xx_dma_1_channel);
 177         platform_device_register(&iop3xx_aau_channel);
 178 }
 179
 180 MACHINE_START(IQ80321, "Intel IQ80321")
 181         /* Maintainer: Intel Corp. */
 182         .atag_offset    = 0x100,
 183         .map_io         = iq80321_map_io,
 184         .init_irq       = iop32x_init_irq,
 185         .init_time      = iq80321_timer_init,
 186         .init_machine   = iq80321_init_machine,
 187         .restart        = iop3xx_restart,
 188 MACHINE_END