/* * arch/arm/mach-ixp4xx/nslu2-setup.c * * NSLU2 board-setup * * Copyright (C) 2008 Rod Whitby <rod@whitby.id.au> * * based on ixdp425-setup.c: * Copyright (C) 2003-2004 MontaVista Software, Inc. * based on nslu2-power.c: * Copyright (C) 2005 Tower Technologies * * Author: Mark Rakes <mrakes at mac.com> * Author: Rod Whitby <rod@whitby.id.au> * Author: Alessandro Zummo <a.zummo@towertech.it> * Maintainers: http://www.nslu2-linux.org/ * */ #include <linux/if_ether.h> #include <linux/irq.h> #include <linux/serial.h> #include <linux/serial_8250.h> #include <linux/leds.h> #include <linux/reboot.h> #include <linux/i2c.h> #include <linux/i2c-gpio.h> #include <linux/io.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> #include <asm/mach/flash.h> #include <asm/mach/time.h> #include <asm/gpio.h> static struct flash_platform_data nslu2_flash_data = { .map_name = "cfi_probe", .width = 2, }; static struct resource nslu2_flash_resource = { .flags = IORESOURCE_MEM, }; static struct platform_device nslu2_flash = { .name = "IXP4XX-Flash", .id = 0, .dev.platform_data = &nslu2_flash_data, .num_resources = 1, .resource = &nslu2_flash_resource, }; static struct i2c_gpio_platform_data nslu2_i2c_gpio_data = { .sda_pin = NSLU2_SDA_PIN, .scl_pin = NSLU2_SCL_PIN, }; static struct i2c_board_info __initdata nslu2_i2c_board_info [] = { { I2C_BOARD_INFO("x1205", 0x6f), }, }; static struct gpio_led nslu2_led_pins[] = { { .name = "nslu2:green:ready", .gpio = NSLU2_LED_GRN_GPIO, }, { .name = "nslu2:red:status", .gpio = NSLU2_LED_RED_GPIO, }, { .name = "nslu2:green:disk-1", .gpio = NSLU2_LED_DISK1_GPIO, .active_low = true, }, { .name = "nslu2:green:disk-2", .gpio = NSLU2_LED_DISK2_GPIO, .active_low = true, }, }; static struct gpio_led_platform_data nslu2_led_data = { .num_leds = ARRAY_SIZE(nslu2_led_pins), .leds = nslu2_led_pins, }; static struct platform_device nslu2_leds = { .name = "leds-gpio", .id = -1, .dev.platform_data = &nslu2_led_data, }; static struct platform_device nslu2_i2c_gpio = { .name = "i2c-gpio", .id = 0, .dev = { .platform_data = &nslu2_i2c_gpio_data, }, }; static struct platform_device nslu2_beeper = { .name = "ixp4xx-beeper", .id = NSLU2_GPIO_BUZZ, .num_resources = 0, }; static struct resource nslu2_uart_resources[] = { { .start = IXP4XX_UART1_BASE_PHYS, .end = IXP4XX_UART1_BASE_PHYS + 0x0fff, .flags = IORESOURCE_MEM, }, { .start = IXP4XX_UART2_BASE_PHYS, .end = IXP4XX_UART2_BASE_PHYS + 0x0fff, .flags = IORESOURCE_MEM, } }; static struct plat_serial8250_port nslu2_uart_data[] = { { .mapbase = IXP4XX_UART1_BASE_PHYS, .membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET, .irq = IRQ_IXP4XX_UART1, .flags = UPF_BOOT_AUTOCONF, .iotype = UPIO_MEM, .regshift = 2, .uartclk = IXP4XX_UART_XTAL, }, { .mapbase = IXP4XX_UART2_BASE_PHYS, .membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET, .irq = IRQ_IXP4XX_UART2, .flags = UPF_BOOT_AUTOCONF, .iotype = UPIO_MEM, .regshift = 2, .uartclk = IXP4XX_UART_XTAL, }, { } }; static struct platform_device nslu2_uart = { .name = "serial8250", .id = PLAT8250_DEV_PLATFORM, .dev.platform_data = nslu2_uart_data, .num_resources = 2, .resource = nslu2_uart_resources, }; /* Built-in 10/100 Ethernet MAC interfaces */ static struct eth_plat_info nslu2_plat_eth[] = { { .phy = 1, .rxq = 3, .txreadyq = 20, } }; static struct platform_device nslu2_eth[] = { { .name = "ixp4xx_eth", .id = IXP4XX_ETH_NPEB, .dev.platform_data = nslu2_plat_eth, } }; static struct platform_device *nslu2_devices[] __initdata = { &nslu2_i2c_gpio, &nslu2_flash, &nslu2_beeper, &nslu2_leds, &nslu2_eth[0], }; static void nslu2_power_off(void) { /* This causes the box to drop the power and go dead. */ /* enable the pwr cntl gpio */ gpio_line_config(NSLU2_PO_GPIO, IXP4XX_GPIO_OUT); /* do the deed */ gpio_line_set(NSLU2_PO_GPIO, IXP4XX_GPIO_HIGH); } static irqreturn_t nslu2_power_handler(int irq, void *dev_id) { /* Signal init to do the ctrlaltdel action, this will bypass init if * it hasn't started and do a kernel_restart. */ ctrl_alt_del(); return IRQ_HANDLED; } static irqreturn_t nslu2_reset_handler(int irq, void *dev_id) { /* This is the paper-clip reset, it shuts the machine down directly. */ machine_power_off(); return IRQ_HANDLED; } static void __init nslu2_timer_init(void) { /* The xtal on this machine is non-standard. */ ixp4xx_timer_freq = NSLU2_FREQ; /* Call standard timer_init function. */ ixp4xx_timer_init(); } static struct sys_timer nslu2_timer = { .init = nslu2_timer_init, }; static void __init nslu2_init(void) { DECLARE_MAC_BUF(mac_buf); uint8_t __iomem *f; int i; ixp4xx_sys_init(); nslu2_flash_resource.start = IXP4XX_EXP_BUS_BASE(0); nslu2_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1; i2c_register_board_info(0, nslu2_i2c_board_info, ARRAY_SIZE(nslu2_i2c_board_info)); /* * This is only useful on a modified machine, but it is valuable * to have it first in order to see debug messages, and so that * it does *not* get removed if platform_add_devices fails! */ (void)platform_device_register(&nslu2_uart); platform_add_devices(nslu2_devices, ARRAY_SIZE(nslu2_devices)); pm_power_off = nslu2_power_off; if (request_irq(gpio_to_irq(NSLU2_RB_GPIO), &nslu2_reset_handler, IRQF_DISABLED | IRQF_TRIGGER_LOW, "NSLU2 reset button", NULL) < 0) { printk(KERN_DEBUG "Reset Button IRQ %d not available\n", gpio_to_irq(NSLU2_RB_GPIO)); } if (request_irq(gpio_to_irq(NSLU2_PB_GPIO), &nslu2_power_handler, IRQF_DISABLED | IRQF_TRIGGER_HIGH, "NSLU2 power button", NULL) < 0) { printk(KERN_DEBUG "Power Button IRQ %d not available\n", gpio_to_irq(NSLU2_PB_GPIO)); } /* * Map in a portion of the flash and read the MAC address. * Since it is stored in BE in the flash itself, we need to * byteswap it if we're in LE mode. */ f = ioremap(IXP4XX_EXP_BUS_BASE(0), 0x40000); if (f) { for (i = 0; i < 6; i++) #ifdef __ARMEB__ nslu2_plat_eth[0].hwaddr[i] = readb(f + 0x3FFB0 + i); #else nslu2_plat_eth[0].hwaddr[i] = readb(f + 0x3FFB0 + (i^3)); #endif iounmap(f); } printk(KERN_INFO "NSLU2: Using MAC address %s for port 0\n", print_mac(mac_buf, nslu2_plat_eth[0].hwaddr)); } MACHINE_START(NSLU2, "Linksys NSLU2") /* Maintainer: www.nslu2-linux.org */ .phys_io = IXP4XX_PERIPHERAL_BASE_PHYS, .io_pg_offst = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC, .boot_params = 0x00000100, .map_io = ixp4xx_map_io, .init_irq = ixp4xx_init_irq, .timer = &nslu2_timer, .init_machine = nslu2_init, MACHINE_END