org.handhelds.familiar/packages/linux/openslug-kernel-2.6.9/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/init.h>
  17 #include <linux/device.h>
  18 #include <linux/serial.h>
  19 #include <linux/tty.h>
  20 #include <linux/serial_core.h>
  21
  22 #include <asm/types.h>
  23 #include <asm/setup.h>
  24 #include <asm/memory.h>
  25 #include <asm/hardware.h>
  26 #include <asm/mach-types.h>
  27 #include <asm/irq.h>
  28 #include <asm/mach/arch.h>
  29 #include <asm/mach/flash.h>
  30
  31 #ifdef  __ARMEB__
  32 #define REG_OFFSET      3
  33 #else
  34 #define REG_OFFSET      0
  35 #endif
  36
  37 /*
  38  * NSLU2 uses only one serial port
  39  */
  40 static struct uart_port nslu2_serial_ports[] = {
  41         {
  42                 .membase        = (char*)(IXP4XX_UART1_BASE_VIRT + REG_OFFSET),
  43                 .mapbase        = (IXP4XX_UART1_BASE_PHYS),
  44                 .irq            = IRQ_IXP4XX_UART1,
  45                 .flags          = UPF_SKIP_TEST,
  46                 .iotype         = UPIO_MEM,
  47                 .regshift       = 2,
  48                 .uartclk        = IXP4XX_UART_XTAL,
  49                 .line           = 0,
  50                 .type           = PORT_XSCALE,
  51                 .fifosize       = 32
  52         }
  53 #if 0
  54         , {
  55                 .membase        = (char*)(IXP4XX_UART2_BASE_VIRT + REG_OFFSET),
  56                 .mapbase        = (IXP4XX_UART2_BASE_PHYS),
  57                 .irq            = IRQ_IXP4XX_UART2,
  58                 .flags          = UPF_SKIP_TEST,
  59                 .iotype         = UPIO_MEM,
  60                 .regshift       = 2,
  61                 .uartclk        = IXP4XX_UART_XTAL,
  62                 .line           = 1,
  63                 .type           = PORT_XSCALE,
  64                 .fifosize       = 32
  65         }
  66 #endif
  67 };
  68
  69 void __init nslu2_map_io(void)
  70 {
  71         early_serial_setup(&nslu2_serial_ports[0]);
  72 #if 0
  73         early_serial_setup(&nslu2_serial_ports[1]);
  74 #endif
  75         ixp4xx_map_io();
  76 }
  77
  78 static struct flash_platform_data nslu2_flash_data = {
  79         .map_name       = "cfi_probe",
  80         .width          = 2,
  81 };
  82
  83 static struct resource nslu2_flash_resource = {
  84         .start          = NSLU2_FLASH_BASE,
  85         .end            = NSLU2_FLASH_BASE + NSLU2_FLASH_SIZE,
  86         .flags          = IORESOURCE_MEM,
  87 };
  88
  89 static struct platform_device nslu2_flash = {
  90         .name           = "IXP4XX-Flash",
  91         .id             = 0,
  92         .dev            = {
  93                 .platform_data = &nslu2_flash_data,
  94         },
  95         .num_resources  = 1,
  96         .resource       = &nslu2_flash_resource,
  97 };
  98
  99 static struct ixp4xx_i2c_pins nslu2_i2c_gpio_pins = {
 100         .sda_pin        = NSLU2_SDA_PIN,
 101         .scl_pin        = NSLU2_SCL_PIN,
 102 };
 103
 104 static struct platform_device nslu2_i2c_controller = {
 105         .name           = "IXP4XX-I2C",
 106         .id             = 0,
 107         .dev            = {
 108                 .platform_data = &nslu2_i2c_gpio_pins,
 109         },
 110         .num_resources  = 0
 111 };
 112
 113 static struct platform_device *nslu2_devices[] __initdata = {
 114         &nslu2_i2c_controller,
 115         &nslu2_flash
 116 };
 117
 118 static void __init nslu2_init(void)
 119 {
 120         platform_add_devices(&nslu2_devices, ARRAY_SIZE(nslu2_devices));
 121 }
 122
 123 MACHINE_START(NSLU2, "Linksys NSLU2")
 124         MAINTAINER("www.nslu2-linux.org")
 125         BOOT_MEM(PHYS_OFFSET, IXP4XX_PERIPHERAL_BASE_PHYS,
 126                 IXP4XX_PERIPHERAL_BASE_VIRT)
 127         MAPIO(nslu2_map_io)
 128         INITIRQ(ixp4xx_init_irq)        //FIXME: all irq are off here
 129         INITTIME(ixp4xx_init_time)      //this was missing in 2.6.7 code ...soft reboot needed?
 130         BOOT_PARAMS(0x0100)
 131         INIT_MACHINE(nslu2_init)
 132 MACHINE_END