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         .start                  = NSLU2_FLASH_BASE,
  31         .end                    = NSLU2_FLASH_BASE + NSLU2_FLASH_SIZE,
  32         .flags                  = IORESOURCE_MEM,
  33 };
  34
  35 static struct platform_device nslu2_flash = {
  36         .name                   = "IXP4XX-Flash",
  37         .id                     = 0,
  38         .dev.platform_data      = &nslu2_flash_data,
  39         .num_resources          = 1,
  40         .resource               = &nslu2_flash_resource,
  41 };
  42
  43 static struct ixp4xx_i2c_pins nslu2_i2c_gpio_pins = {
  44         .sda_pin                = NSLU2_SDA_PIN,
  45         .scl_pin                = NSLU2_SCL_PIN,
  46 };
  47
  48 static struct platform_device nslu2_i2c_controller = {
  49         .name                   = "IXP4XX-I2C",
  50         .id                     = 0,
  51         .dev.platform_data      = &nslu2_i2c_gpio_pins,
  52         .num_resources          = 0,
  53 };
  54
  55 static struct resource nslu2_uart_resources[] = {
  56         {
  57                 .start          = IXP4XX_UART1_BASE_PHYS,
  58                 .end            = IXP4XX_UART1_BASE_PHYS + 0x0fff,
  59                 .flags          = IORESOURCE_MEM,
  60         },
  61         {
  62                 .start          = IXP4XX_UART2_BASE_PHYS,
  63                 .end            = IXP4XX_UART2_BASE_PHYS + 0x0fff,
  64                 .flags          = IORESOURCE_MEM,
  65         }
  66 };
  67
  68 static struct plat_serial8250_port nslu2_uart_data[] = {
  69         {
  70                 .mapbase        = IXP4XX_UART1_BASE_PHYS,
  71                 .membase        = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
  72                 .irq            = IRQ_IXP4XX_UART1,
  73                 .flags          = UPF_BOOT_AUTOCONF,
  74                 .iotype         = UPIO_MEM,
  75                 .regshift       = 2,
  76                 .uartclk        = IXP4XX_UART_XTAL,
  77         },
  78         {
  79                 .mapbase        = IXP4XX_UART2_BASE_PHYS,
  80                 .membase        = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
  81                 .irq            = IRQ_IXP4XX_UART2,
  82                 .flags          = UPF_BOOT_AUTOCONF,
  83                 .iotype         = UPIO_MEM,
  84                 .regshift       = 2,
  85                 .uartclk        = IXP4XX_UART_XTAL,
  86         },
  87         { }
  88 };
  89
  90 static struct platform_device nslu2_uart = {
  91         .name                   = "serial8250",
  92         .id                     = PLAT8250_DEV_PLATFORM,
  93         .dev.platform_data      = nslu2_uart_data,
  94         .num_resources          = 2,
  95         .resource               = nslu2_uart_resources,
  96 };
  97
  98 static struct platform_device *nslu2_devices[] __initdata = {
  99         &nslu2_i2c_controller,
 100         &nslu2_flash,
 101         &nslu2_uart,
 102 };
 103
 104 static void nslu2_power_off(void)
 105 {
 106         /* This causes the box to drop the power and go dead. */
 107
 108         /* enable the pwr cntl gpio */
 109         gpio_line_config(NSLU2_PO_GPIO, IXP4XX_GPIO_OUT);
 110
 111         /* do the deed */
 112         gpio_line_set(NSLU2_PO_GPIO, IXP4XX_GPIO_HIGH);
 113 }
 114
 115 static void __init nslu2_init(void)
 116 {
 117         ixp4xx_sys_init();
 118
 119         pm_power_off = nslu2_power_off;
 120
 121         platform_add_devices(nslu2_devices, ARRAY_SIZE(nslu2_devices));
 122 }
 123
 124 MACHINE_START(NSLU2, "Linksys NSLU2")
 125         /* Maintainer: www.nslu2-linux.org */
 126         .phys_io        = IXP4XX_PERIPHERAL_BASE_PHYS,
 127         .io_pg_offst    = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
 128         .boot_params    = 0x00000100,
 129         .map_io         = ixp4xx_map_io,
 130         .init_irq       = ixp4xx_init_irq,
 131         .timer          = &ixp4xx_timer,
 132         .init_machine   = nslu2_init,
 133 MACHINE_END