arch/arm/mach-ixp4xx/nslu2-setup.c

   1 /*
   2  * arch/arm/mach-ixp4xx/nslu2-setup.c
   3  *
   4  * NSLU2 board-setup
   5  *
   6  * based ixdp425-setup.c:
   7  *      Copyright (C) 2003-2004 MontaVista Software, Inc.
   8  *
   9  * Author: Mark Rakes <mrakes at mac.com>
  10  * Maintainers: http://www.nslu2-linux.org/
  11  *
  12  * Fixed missing init_time in MACHINE_START kas11 10/22/04
  13  * Changed to conform to new style __init ixdp425 kas11 10/22/04
  14  */
  15
  16 #include <linux/kernel.h>
  17 #include <linux/serial.h>
  18 #include <linux/serial_8250.h>
  19
  20 #include <asm/mach-types.h>
  21 #include <asm/mach/arch.h>
  22 #include <asm/mach/flash.h>
  23
  24 static struct flash_platform_data nslu2_flash_data = {
  25         .map_name               = "cfi_probe",
  26         .width                  = 2,
  27 };
  28
  29 static struct resource nslu2_flash_resource = {
  30         .flags                  = IORESOURCE_MEM,
  31 };
  32
  33 static struct platform_device nslu2_flash = {
  34         .name                   = "IXP4XX-Flash",
  35         .id                     = 0,
  36         .dev.platform_data      = &nslu2_flash_data,
  37         .num_resources          = 1,
  38         .resource               = &nslu2_flash_resource,
  39 };
  40
  41 static struct ixp4xx_i2c_pins nslu2_i2c_gpio_pins = {
  42         .sda_pin                = NSLU2_SDA_PIN,
  43         .scl_pin                = NSLU2_SCL_PIN,
  44 };
  45
  46 static struct platform_device nslu2_i2c_controller = {
  47         .name                   = "IXP4XX-I2C",
  48         .id                     = 0,
  49         .dev.platform_data      = &nslu2_i2c_gpio_pins,
  50         .num_resources          = 0,
  51 };
  52
  53 static struct resource nslu2_uart_resources[] = {
  54         {
  55                 .start          = IXP4XX_UART1_BASE_PHYS,
  56                 .end            = IXP4XX_UART1_BASE_PHYS + 0x0fff,
  57                 .flags          = IORESOURCE_MEM,
  58         },
  59         {
  60                 .start          = IXP4XX_UART2_BASE_PHYS,
  61                 .end            = IXP4XX_UART2_BASE_PHYS + 0x0fff,
  62                 .flags          = IORESOURCE_MEM,
  63         }
  64 };
  65
  66 static struct plat_serial8250_port nslu2_uart_data[] = {
  67         {
  68                 .mapbase        = IXP4XX_UART1_BASE_PHYS,
  69                 .membase        = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
  70                 .irq            = IRQ_IXP4XX_UART1,
  71                 .flags          = UPF_BOOT_AUTOCONF,
  72                 .iotype         = UPIO_MEM,
  73                 .regshift       = 2,
  74                 .uartclk        = IXP4XX_UART_XTAL,
  75         },
  76         {
  77                 .mapbase        = IXP4XX_UART2_BASE_PHYS,
  78                 .membase        = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
  79                 .irq            = IRQ_IXP4XX_UART2,
  80                 .flags          = UPF_BOOT_AUTOCONF,
  81                 .iotype         = UPIO_MEM,
  82                 .regshift       = 2,
  83                 .uartclk        = IXP4XX_UART_XTAL,
  84         },
  85         { }
  86 };
  87
  88 static struct platform_device nslu2_uart = {
  89         .name                   = "serial8250",
  90         .id                     = PLAT8250_DEV_PLATFORM,
  91         .dev.platform_data      = nslu2_uart_data,
  92         .num_resources          = 2,
  93         .resource               = nslu2_uart_resources,
  94 };
  95
  96 static struct platform_device *nslu2_devices[] __initdata = {
  97         &nslu2_i2c_controller,
  98         &nslu2_flash,
  99         &nslu2_uart,
 100 };
 101
 102 static void nslu2_power_off(void)
 103 {
 104         /* This causes the box to drop the power and go dead. */
 105
 106         /* enable the pwr cntl gpio */
 107         gpio_line_config(NSLU2_PO_GPIO, IXP4XX_GPIO_OUT);
 108
 109         /* do the deed */
 110         gpio_line_set(NSLU2_PO_GPIO, IXP4XX_GPIO_HIGH);
 111 }
 112
 113 static void __init nslu2_init(void)
 114 {
 115         ixp4xx_sys_init();
 116
 117         nslu2_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
 118         nslu2_flash_resource.end =
 119                 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
 120
 121         pm_power_off = nslu2_power_off;
 122
 123         platform_add_devices(nslu2_devices, ARRAY_SIZE(nslu2_devices));
 124 }
 125
 126 MACHINE_START(NSLU2, "Linksys NSLU2")
 127         /* Maintainer: www.nslu2-linux.org */
 128         .phys_io        = IXP4XX_PERIPHERAL_BASE_PHYS,
 129         .io_pg_offst    = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
 130         .boot_params    = 0x00000100,
 131         .map_io         = ixp4xx_map_io,
 132         .init_irq       = ixp4xx_init_irq,
 133         .timer          = &ixp4xx_timer,
 134         .init_machine   = nslu2_init,
 135 MACHINE_END