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Commit 7e36e2f5 authored by Rod Whitby's avatar Rod Whitby Committed by Russell King
Browse files

[ARM] 4874/2: ixp4xx: Add support for the Freecom FSG-3 board 



The Freecom-FSG3 is a small network-attached-storage device with the
following feature set:

* Intel IXP422
* 4MB Flash (ixp4xx flash driver)
* 64MB RAM
* 4 USB 2.0 host ports (ehci and ohci drivers)
* 1 WAN (eth1) and 3 LAN (eth0) ethernet ports
  * Supported by the open source ixp4xx ethernet driver
* Via VT6421 disk controller (libata and sata-via drivers)
  * Internal hard disk (PATA supported, SATA not yet supported)
  * External SATA port (not yet supported)
* ISL1208 RTC chip
* Winbond 83782 temp sensor and fan controller
* MiniPCI slot

The ixp4xx_defconfig is also updated to support this device (the
leds-fsg driver is to be submitted separately via the leds tree after
this initial support is merged, as it depends on header gpio defines).

Signed-off-by: default avatarRod Whitby <rod@whitby.id.au>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 05dda977

arch/arm/configs/ixp4xx_defconfig

+5 −4
Original line number Diff line number Diff line
@@ -165,6 +165,7 @@ CONFIG_ARCH_PRPMC1100=y 
CONFIG_MACH_NAS100D=y

CONFIG_MACH_DSMG600=y

CONFIG_ARCH_IXDP4XX=y

CONFIG_MACH_FSG=y

CONFIG_CPU_IXP46X=y

CONFIG_CPU_IXP43X=y

CONFIG_MACH_GTWX5715=y
@@ -770,7 +771,7 @@ CONFIG_ATA=y 
# CONFIG_SATA_SIL24 is not set

# CONFIG_SATA_SIS is not set

# CONFIG_SATA_ULI is not set

# CONFIG_SATA_VIA is not set

CONFIG_SATA_VIA=y

# CONFIG_SATA_VITESSE is not set

# CONFIG_SATA_INIC162X is not set

# CONFIG_PATA_ALI is not set
@@ -1143,7 +1144,7 @@ CONFIG_HWMON=y 
# CONFIG_SENSORS_VIA686A is not set

# CONFIG_SENSORS_VT1211 is not set

# CONFIG_SENSORS_VT8231 is not set

# CONFIG_SENSORS_W83781D is not set

CONFIG_SENSORS_W83781D=y

# CONFIG_SENSORS_W83791D is not set

# CONFIG_SENSORS_W83792D is not set

# CONFIG_SENSORS_W83793 is not set
@@ -1334,8 +1335,8 @@ CONFIG_LEDS_CLASS=y 
#

# LED drivers

#

# CONFIG_LEDS_IXP4XX is not set

CONFIG_LEDS_GPIO=y

CONFIG_LEDS_FSG=y



#

# LED Triggers
@@ -1367,7 +1368,7 @@ CONFIG_RTC_INTF_DEV=y 
# CONFIG_RTC_DRV_DS1672 is not set

# CONFIG_RTC_DRV_MAX6900 is not set

# CONFIG_RTC_DRV_RS5C372 is not set

# CONFIG_RTC_DRV_ISL1208 is not set

CONFIG_RTC_DRV_ISL1208=y

CONFIG_RTC_DRV_X1205=y

CONFIG_RTC_DRV_PCF8563=y

# CONFIG_RTC_DRV_PCF8583 is not set

arch/arm/mach-ixp4xx/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -125,6 +125,15 @@ config ARCH_IXDP4XX 
	depends on ARCH_IXDP425 || MACH_IXDP465 || MACH_KIXRP435

	default y



config MACH_FSG

	bool

	prompt "Freecom FSG-3"

	select PCI

	help

	  Say 'Y' here if you want your kernel to support Freecom's

	  FSG-3 device. For more information on this platform,

	  see http://www.nslu2-linux.org/wiki/FSG3/HomePage



#

# Certain registers and IRQs are only enabled if supporting IXP465 CPUs

#

arch/arm/mach-ixp4xx/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ obj-pci-$(CONFIG_MACH_NAS100D) += nas100d-pci.o 
obj-pci-$(CONFIG_MACH_DSMG600)		+= dsmg600-pci.o

obj-pci-$(CONFIG_MACH_GATEWAY7001)	+= gateway7001-pci.o

obj-pci-$(CONFIG_MACH_WG302V2)		+= wg302v2-pci.o

obj-pci-$(CONFIG_MACH_FSG)		+= fsg-pci.o



obj-y	+= common.o
@@ -28,6 +29,7 @@ obj-$(CONFIG_MACH_NAS100D) += nas100d-setup.o 
obj-$(CONFIG_MACH_DSMG600)      += dsmg600-setup.o

obj-$(CONFIG_MACH_GATEWAY7001)	+= gateway7001-setup.o

obj-$(CONFIG_MACH_WG302V2)	+= wg302v2-setup.o

obj-$(CONFIG_MACH_FSG)		+= fsg-setup.o



obj-$(CONFIG_PCI)		+= $(obj-pci-$(CONFIG_PCI)) common-pci.o

obj-$(CONFIG_IXP4XX_QMGR)	+= ixp4xx_qmgr.o

arch/arm/mach-ixp4xx/fsg-pci.c

0 → 100644
+71 −0
Original line number Diff line number Diff line 
/*

 * arch/arch/mach-ixp4xx/fsg-pci.c

 *

 * FSG board-level PCI initialization

 *

 * Author: Rod Whitby <rod@whitby.id.au>

 * Maintainer: http://www.nslu2-linux.org/

 *

 * based on ixdp425-pci.c:

 *	Copyright (C) 2002 Intel Corporation.

 *	Copyright (C) 2003-2004 MontaVista Software, Inc.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 *

 */



#include <linux/pci.h>

#include <linux/init.h>

#include <linux/irq.h>



#include <asm/mach/pci.h>

#include <asm/mach-types.h>



void __init fsg_pci_preinit(void)

{

	set_irq_type(IRQ_FSG_PCI_INTA, IRQT_LOW);

	set_irq_type(IRQ_FSG_PCI_INTB, IRQT_LOW);

	set_irq_type(IRQ_FSG_PCI_INTC, IRQT_LOW);



	ixp4xx_pci_preinit();

}



static int __init fsg_map_irq(struct pci_dev *dev, u8 slot, u8 pin)

{

	static int pci_irq_table[FSG_PCI_IRQ_LINES] = {

		IRQ_FSG_PCI_INTC,

		IRQ_FSG_PCI_INTB,

		IRQ_FSG_PCI_INTA,

	};



	int irq = -1;

	slot = slot - 11;



	if (slot >= 1 && slot <= FSG_PCI_MAX_DEV &&

	    pin >= 1 && pin <= FSG_PCI_IRQ_LINES)

		irq = pci_irq_table[(slot - 1)];

	printk(KERN_INFO "%s: Mapped slot %d pin %d to IRQ %d\n",

	       __func__, slot, pin, irq);



	return irq;

}



struct hw_pci fsg_pci __initdata = {

	.nr_controllers = 1,

	.preinit =	  fsg_pci_preinit,

	.swizzle =	  pci_std_swizzle,

	.setup =	  ixp4xx_setup,

	.scan =		  ixp4xx_scan_bus,

	.map_irq =	  fsg_map_irq,

};



int __init fsg_pci_init(void)

{

	if (machine_is_fsg())

		pci_common_init(&fsg_pci);

	return 0;

}



subsys_initcall(fsg_pci_init);

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

0 → 100644
+276 −0
Original line number Diff line number Diff line 
/*

 * arch/arm/mach-ixp4xx/fsg-setup.c

 *

 * FSG 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: Rod Whitby <rod@whitby.id.au>

 * 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 <asm/mach-types.h>

#include <asm/mach/arch.h>

#include <asm/mach/flash.h>

#include <asm/io.h>

#include <asm/gpio.h>



static struct flash_platform_data fsg_flash_data = {

	.map_name		= "cfi_probe",

	.width			= 2,

};



static struct resource fsg_flash_resource = {

	.flags			= IORESOURCE_MEM,

};



static struct platform_device fsg_flash = {

	.name			= "IXP4XX-Flash",

	.id			= 0,

	.dev = {

		.platform_data	= &fsg_flash_data,

	},

	.num_resources		= 1,

	.resource		= &fsg_flash_resource,

};



static struct i2c_gpio_platform_data fsg_i2c_gpio_data = {

	.sda_pin		= FSG_SDA_PIN,

	.scl_pin		= FSG_SCL_PIN,

};



static struct platform_device fsg_i2c_gpio = {

	.name			= "i2c-gpio",

	.id			= 0,

	.dev = {

		.platform_data	= &fsg_i2c_gpio_data,

	},

};



static struct i2c_board_info __initdata fsg_i2c_board_info [] = {

	{

		I2C_BOARD_INFO("rtc-isl1208", 0x6f),

	},

};



static struct resource fsg_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 fsg_uart_data[] = {

	{

		.mapbase	= IXP4XX_UART1_BASE_PHYS,

		.membase	= (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,

		.irq		= IRQ_IXP4XX_UART1,

		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,

		.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 | UPF_SKIP_TEST,

		.iotype		= UPIO_MEM,

		.regshift	= 2,

		.uartclk	= IXP4XX_UART_XTAL,

	},

	{ }

};



static struct platform_device fsg_uart = {

	.name			= "serial8250",

	.id			= PLAT8250_DEV_PLATFORM,

	.dev = {

		.platform_data	= fsg_uart_data,

	},

	.num_resources		= ARRAY_SIZE(fsg_uart_resources),

	.resource		= fsg_uart_resources,

};



static struct platform_device fsg_leds = {

	.name		= "fsg-led",

	.id		= -1,

};



/* Built-in 10/100 Ethernet MAC interfaces */

static struct eth_plat_info fsg_plat_eth[] = {

	{

		.phy		= 5,

		.rxq		= 3,

		.txreadyq	= 20,

	}, {

		.phy		= 4,

		.rxq		= 4,

		.txreadyq	= 21,

	}

};



static struct platform_device fsg_eth[] = {

	{

		.name			= "ixp4xx_eth",

		.id			= IXP4XX_ETH_NPEB,

		.dev = {

			.platform_data	= fsg_plat_eth,

		},

	}, {

		.name			= "ixp4xx_eth",

		.id			= IXP4XX_ETH_NPEC,

		.dev = {

			.platform_data	= fsg_plat_eth + 1,

		},

	}

};



static struct platform_device *fsg_devices[] __initdata = {

	&fsg_i2c_gpio,

	&fsg_flash,

	&fsg_leds,

	&fsg_eth[0],

	&fsg_eth[1],

};



static irqreturn_t fsg_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 fsg_reset_handler(int irq, void *dev_id)

{

	/* This is the paper-clip reset which does an emergency reboot. */

	printk(KERN_INFO "Restarting system.\n");

	machine_restart(NULL);



	/* This should never be reached. */

	return IRQ_HANDLED;

}



static void __init fsg_init(void)

{

	DECLARE_MAC_BUF(mac_buf);

	uint8_t __iomem *f;

	int i;



	ixp4xx_sys_init();



	fsg_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);

	fsg_flash_resource.end =

		IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;



	*IXP4XX_EXP_CS0 |= IXP4XX_FLASH_WRITABLE;

	*IXP4XX_EXP_CS1 = *IXP4XX_EXP_CS0;



	/* Configure CS2 for operation, 8bit and writable */

	*IXP4XX_EXP_CS2 = 0xbfff0002;



	i2c_register_board_info(0, fsg_i2c_board_info,

				ARRAY_SIZE(fsg_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(&fsg_uart);



	platform_add_devices(fsg_devices, ARRAY_SIZE(fsg_devices));



	if (request_irq(gpio_to_irq(FSG_RB_GPIO), &fsg_reset_handler,

			IRQF_DISABLED | IRQF_TRIGGER_LOW,

			"FSG reset button", NULL) < 0) {



		printk(KERN_DEBUG "Reset Button IRQ %d not available\n",

			gpio_to_irq(FSG_RB_GPIO));

	}



	if (request_irq(gpio_to_irq(FSG_SB_GPIO), &fsg_power_handler,

			IRQF_DISABLED | IRQF_TRIGGER_LOW,

			"FSG power button", NULL) < 0) {



		printk(KERN_DEBUG "Power Button IRQ %d not available\n",

			gpio_to_irq(FSG_SB_GPIO));

	}



	/*

	 * Map in a portion of the flash and read the MAC addresses.

	 * 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), 0x400000);

	if (f) {

#ifdef __ARMEB__

		for (i = 0; i < 6; i++) {

			fsg_plat_eth[0].hwaddr[i] = readb(f + 0x3C0422 + i);

			fsg_plat_eth[1].hwaddr[i] = readb(f + 0x3C043B + i);

		}

#else



		/*

		  Endian-swapped reads from unaligned addresses are

		  required to extract the two MACs from the big-endian

		  Redboot config area in flash.

		*/



		fsg_plat_eth[0].hwaddr[0] = readb(f + 0x3C0421);

		fsg_plat_eth[0].hwaddr[1] = readb(f + 0x3C0420);

		fsg_plat_eth[0].hwaddr[2] = readb(f + 0x3C0427);

		fsg_plat_eth[0].hwaddr[3] = readb(f + 0x3C0426);

		fsg_plat_eth[0].hwaddr[4] = readb(f + 0x3C0425);

		fsg_plat_eth[0].hwaddr[5] = readb(f + 0x3C0424);



		fsg_plat_eth[1].hwaddr[0] = readb(f + 0x3C0439);

		fsg_plat_eth[1].hwaddr[1] = readb(f + 0x3C043F);

		fsg_plat_eth[1].hwaddr[2] = readb(f + 0x3C043E);

		fsg_plat_eth[1].hwaddr[3] = readb(f + 0x3C043D);

		fsg_plat_eth[1].hwaddr[4] = readb(f + 0x3C043C);

		fsg_plat_eth[1].hwaddr[5] = readb(f + 0x3C0443);

#endif

		iounmap(f);

	}

	printk(KERN_INFO "FSG: Using MAC address %s for port 0\n",

	       print_mac(mac_buf, fsg_plat_eth[0].hwaddr));

	printk(KERN_INFO "FSG: Using MAC address %s for port 1\n",

	       print_mac(mac_buf, fsg_plat_eth[1].hwaddr));



}



MACHINE_START(FSG, "Freecom FSG-3")

	/* Maintainer: www.nslu2-linux.org */

	.phys_io	= IXP4XX_PERIPHERAL_BASE_PHYS,

	.io_pg_offst	= ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xfffc,

	.map_io		= ixp4xx_map_io,

	.init_irq	= ixp4xx_init_irq,

	.timer		= &ixp4xx_timer,

	.boot_params	= 0x0100,

	.init_machine	= fsg_init,

MACHINE_END