org.handhelds.familiar/packages/linux/nslu2-kernel/2.6.12/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/init.h>
  18 #include <linux/device.h>
  19 #include <linux/serial.h>
  20 #include <linux/tty.h>
  21 #include <linux/serial_8250.h>
  22
  23 #include <asm/types.h>
  24 #include <asm/setup.h>
  25 #include <asm/memory.h>
  26 #include <asm/hardware.h>
  27 #include <asm/mach-types.h>
  28 #include <asm/irq.h>
  29 #include <asm/mach/arch.h>
  30 #include <asm/mach/flash.h>
  31
  32 void __init nslu2_map_io(void)
  33 {
  34         ixp4xx_map_io();
  35 }
  36
  37 static struct flash_platform_data nslu2_flash_data = {
  38         .map_name       = "cfi_probe",
  39         .width          = 2,
  40 };
  41
  42 static struct resource nslu2_flash_resource = {
  43         .start          = NSLU2_FLASH_BASE,
  44         .end            = NSLU2_FLASH_BASE + NSLU2_FLASH_SIZE,
  45         .flags          = IORESOURCE_MEM,
  46 };
  47
  48 static struct platform_device nslu2_flash = {
  49         .name           = "IXP4XX-Flash",
  50         .id             = 0,
  51         .dev            = {
  52                 .platform_data = &nslu2_flash_data,
  53         },
  54         .num_resources  = 1,
  55         .resource       = &nslu2_flash_resource,
  56 };
  57
  58 static struct ixp4xx_i2c_pins nslu2_i2c_gpio_pins = {
  59         .sda_pin        = NSLU2_SDA_PIN,
  60         .scl_pin        = NSLU2_SCL_PIN,
  61 };
  62
  63 static struct platform_device nslu2_i2c_controller = {
  64         .name           = "IXP4XX-I2C",
  65         .id             = 0,
  66         .dev            = {
  67                 .platform_data = &nslu2_i2c_gpio_pins,
  68         },
  69         .num_resources  = 0
  70 };
  71
  72 static struct resource nslu2_uart_resources[] = {
  73         {
  74                 .start          = IXP4XX_UART1_BASE_PHYS,
  75                 .end            = IXP4XX_UART1_BASE_PHYS + 0x0fff,
  76                 .flags          = IORESOURCE_MEM
  77         },
  78         {
  79                 .start          = IXP4XX_UART2_BASE_PHYS,
  80                 .end            = IXP4XX_UART2_BASE_PHYS + 0x0fff,
  81                 .flags          = IORESOURCE_MEM
  82         }
  83 };
  84
  85 static struct plat_serial8250_port nslu2_uart_data[] = {
  86         {
  87                 .mapbase        = IXP4XX_UART1_BASE_PHYS,
  88                 .membase        = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
  89                 .irq            = IRQ_IXP4XX_UART1,
  90                 .flags          = UPF_BOOT_AUTOCONF,
  91                 .iotype         = UPIO_MEM,
  92                 .regshift       = 2,
  93                 .uartclk        = IXP4XX_UART_XTAL,
  94         },
  95         {
  96                 .mapbase        = IXP4XX_UART2_BASE_PHYS,
  97                 .membase        = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
  98                 .irq            = IRQ_IXP4XX_UART2,
  99                 .flags          = UPF_BOOT_AUTOCONF,
 100                 .iotype         = UPIO_MEM,
 101                 .regshift       = 2,
 102                 .uartclk        = IXP4XX_UART_XTAL,
 103         }
 104 };
 105
 106 static struct platform_device nslu2_uart = {
 107         .name                   = "serial8250",
 108         .id                     = 0,
 109         .dev.platform_data      = nslu2_uart_data,
 110         .num_resources          = 2,
 111         .resource               = nslu2_uart_resources
 112 };
 113
 114 static struct platform_device *nslu2_devices[] __initdata = {
 115         &nslu2_i2c_controller,
 116         &nslu2_flash,
 117         &nslu2_uart
 118 };
 119
 120 static void n2_power_off(void)
 121 {
 122         /* This causes the box to drop the power and go dead. */
 123 #define GPIO_PO_BM              0x0100  //b0000 0001 0000 0000
 124         *IXP4XX_GPIO_GPOER &= ~GPIO_PO_BM;      // enable the pwr cntl gpio
 125         *IXP4XX_GPIO_GPOUTR |= GPIO_PO_BM;      // do the deed
 126 }
 127
 128 static void __init nslu2_init(void)
 129 {
 130         ixp4xx_sys_init();
 131
 132         pm_power_off = n2_power_off;
 133         platform_add_devices(nslu2_devices, ARRAY_SIZE(nslu2_devices));
 134 }
 135
 136 MACHINE_START(NSLU2, "Linksys NSLU2")
 137         MAINTAINER("www.nslu2-linux.org")
 138                 BOOT_MEM(PHYS_OFFSET, IXP4XX_PERIPHERAL_BASE_PHYS,
 139                         IXP4XX_PERIPHERAL_BASE_VIRT)
 140                 MAPIO(nslu2_map_io)
 141                 INITIRQ(ixp4xx_init_irq)        //FIXME: all irq are off here
 142                 .timer          = &ixp4xx_timer,
 143                 // INITTIME(ixp4xx_init_time)   //this was missing in 2.6.7 code ...soft reboot needed?
 144                 BOOT_PARAMS(0x0100)
 145                 INIT_MACHINE(nslu2_init)
 146 MACHINE_END
 147