arch/arm/mach-iop32x/iq31244.c - kernel/prism - Git at Google

 /*
  * arch/arm/mach-iop32x/iq31244.c
  *
  * Board support code for the Intel EP80219 and IQ31244 platforms.
  *
  * Author: Rory Bolt <rorybolt@pacbell.net>
  * Copyright (C) 2002 Rory Bolt
  * Copyright 2003 (c) MontaVista, Software, Inc.
  * Copyright (C) 2004 Intel Corp.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
  * Free Software Foundation; either version 2 of the License, or (at your
  * option) any later version.
  */

 #include <linux/mm.h>
 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/kernel.h>
 #include <linux/pci.h>
 #include <linux/pm.h>
 #include <linux/string.h>
 #include <linux/slab.h>
 #include <linux/serial_core.h>
 #include <linux/serial_8250.h>
 #include <linux/mtd/physmap.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
 #include <mach/hardware.h>
 #include <asm/cputype.h>
 #include <asm/irq.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
 #include <asm/mach/pci.h>
 #include <asm/mach/time.h>
 #include <asm/mach-types.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <mach/time.h>

 /*
  * Until March of 2007 iq31244 platforms and ep80219 platforms shared the
  * same machine id, and the processor type was used to select board type.
  * However this assumption breaks for an iq80219 board which is an iop219
  * processor on an iq31244 board.  The force_ep80219 flag has been added
  * for old boot loaders using the iq31244 machine id for an ep80219 platform.
  */
 static int force_ep80219;

 static int is_80219(void)
 {
 	return !!((read_cpuid_id() & 0xffffffe0) == 0x69052e20);
 }

 static int is_ep80219(void)
 {
 	if (machine_is_ep80219() || force_ep80219)
 		return 1;
 	else
 		return 0;
 }


 /*
  * EP80219/IQ31244 timer tick configuration.
  */
 static void __init iq31244_timer_init(void)
 {
 	if (is_ep80219()) {
 		/* 33.333 MHz crystal.  */
 		iop_init_time(200000000);
 	} else {
 		/* 33.000 MHz crystal.  */
 		iop_init_time(198000000);
 	}
 }

 static struct sys_timer iq31244_timer = {
 	.init		= iq31244_timer_init,
 	.offset		= iop_gettimeoffset,
 };


 /*
  * IQ31244 I/O.
  */
 static struct map_desc iq31244_io_desc[] __initdata = {
 	{	/* on-board devices */
 		.virtual	= IQ31244_UART,
 		.pfn		= __phys_to_pfn(IQ31244_UART),
 		.length		= 0x00100000,
 		.type		= MT_DEVICE,
 	},
 };

 void __init iq31244_map_io(void)
 {
 	iop3xx_map_io();
 	iotable_init(iq31244_io_desc, ARRAY_SIZE(iq31244_io_desc));
 }


 /*
  * EP80219/IQ31244 PCI.
  */
 static int __init
 ep80219_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int irq;

 	if (slot == 0) {
 		/* CFlash */
 		irq = IRQ_IOP32X_XINT1;
 	} else if (slot == 1) {
 		/* 82551 Pro 100 */
 		irq = IRQ_IOP32X_XINT0;
 	} else if (slot == 2) {
 		/* PCI-X Slot */
 		irq = IRQ_IOP32X_XINT3;
 	} else if (slot == 3) {
 		/* SATA */
 		irq = IRQ_IOP32X_XINT2;
 	} else {
 		printk(KERN_ERR "ep80219_pci_map_irq() called for unknown "
 			"device PCI:%d:%d:%d\n", dev->bus->number,
 			PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
 		irq = -1;
 	}

 	return irq;
 }

 static struct hw_pci ep80219_pci __initdata = {
 	.swizzle	= pci_std_swizzle,
 	.nr_controllers = 1,
 	.setup		= iop3xx_pci_setup,
 	.preinit	= iop3xx_pci_preinit,
 	.scan		= iop3xx_pci_scan_bus,
 	.map_irq	= ep80219_pci_map_irq,
 };

 static int __init
 iq31244_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int irq;

 	if (slot == 0) {
 		/* CFlash */
 		irq = IRQ_IOP32X_XINT1;
 	} else if (slot == 1) {
 		/* SATA */
 		irq = IRQ_IOP32X_XINT2;
 	} else if (slot == 2) {
 		/* PCI-X Slot */
 		irq = IRQ_IOP32X_XINT3;
 	} else if (slot == 3) {
 		/* 82546 GigE */
 		irq = IRQ_IOP32X_XINT0;
 	} else {
 		printk(KERN_ERR "iq31244_pci_map_irq called for unknown "
 			"device PCI:%d:%d:%d\n", dev->bus->number,
 			PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
 		irq = -1;
 	}

 	return irq;
 }

 static struct hw_pci iq31244_pci __initdata = {
 	.swizzle	= pci_std_swizzle,
 	.nr_controllers = 1,
 	.setup		= iop3xx_pci_setup,
 	.preinit	= iop3xx_pci_preinit,
 	.scan		= iop3xx_pci_scan_bus,
 	.map_irq	= iq31244_pci_map_irq,
 };

 static int __init iq31244_pci_init(void)
 {
 	if (is_ep80219())
 		pci_common_init(&ep80219_pci);
 	else if (machine_is_iq31244()) {
 		if (is_80219()) {
 			printk("note: iq31244 board type has been selected\n");
 			printk("note: to select ep80219 operation:\n");
 			printk("\t1/ specify \"force_ep80219\" on the kernel"
 				" command line\n");
 			printk("\t2/ update boot loader to pass"
 				" the ep80219 id: %d\n", MACH_TYPE_EP80219);
 		}
 		pci_common_init(&iq31244_pci);
 	}

 	return 0;
 }

 subsys_initcall(iq31244_pci_init);


 /*
  * IQ31244 machine initialisation.
  */
 static struct physmap_flash_data iq31244_flash_data = {
 	.width		= 2,
 };

 static struct resource iq31244_flash_resource = {
 	.start		= 0xf0000000,
 	.end		= 0xf07fffff,
 	.flags		= IORESOURCE_MEM,
 };

 static struct platform_device iq31244_flash_device = {
 	.name		= "physmap-flash",
 	.id		= 0,
 	.dev		= {
 		.platform_data	= &iq31244_flash_data,
 	},
 	.num_resources	= 1,
 	.resource	= &iq31244_flash_resource,
 };

 static struct plat_serial8250_port iq31244_serial_port[] = {
 	{
 		.mapbase	= IQ31244_UART,
 		.membase	= (char *)IQ31244_UART,
 		.irq		= IRQ_IOP32X_XINT1,
 		.flags		= UPF_SKIP_TEST,
 		.iotype		= UPIO_MEM,
 		.regshift	= 0,
 		.uartclk	= 1843200,
 	},
 	{ },
 };

 static struct resource iq31244_uart_resource = {
 	.start		= IQ31244_UART,
 	.end		= IQ31244_UART + 7,
 	.flags		= IORESOURCE_MEM,
 };

 static struct platform_device iq31244_serial_device = {
 	.name		= "serial8250",
 	.id		= PLAT8250_DEV_PLATFORM,
 	.dev		= {
 		.platform_data		= iq31244_serial_port,
 	},
 	.num_resources	= 1,
 	.resource	= &iq31244_uart_resource,
 };

 /*
  * This function will send a SHUTDOWN_COMPLETE message to the PIC
  * controller over I2C.  We are not using the i2c subsystem since
  * we are going to power off and it may be removed
  */
 void ep80219_power_off(void)
 {
 	/*
 	 * Send the Address byte w/ the start condition
 	 */
 	*IOP3XX_IDBR1 = 0x60;
 	*IOP3XX_ICR1 = 0xE9;
 	mdelay(1);

 	/*
 	 * Send the START_MSG byte w/ no start or stop condition
 	 */
 	*IOP3XX_IDBR1 = 0x0F;
 	*IOP3XX_ICR1 = 0xE8;
 	mdelay(1);

 	/*
 	 * Send the SHUTDOWN_COMPLETE Message ID byte w/ no start or
 	 * stop condition
 	 */
 	*IOP3XX_IDBR1 = 0x03;
 	*IOP3XX_ICR1 = 0xE8;
 	mdelay(1);

 	/*
 	 * Send an ignored byte w/ stop condition
 	 */
 	*IOP3XX_IDBR1 = 0x00;
 	*IOP3XX_ICR1 = 0xEA;

 	while (1)
 		;
 }

 static void __init iq31244_init_machine(void)
 {
 	platform_device_register(&iop3xx_i2c0_device);
 	platform_device_register(&iop3xx_i2c1_device);
 	platform_device_register(&iq31244_flash_device);
 	platform_device_register(&iq31244_serial_device);
 	platform_device_register(&iop3xx_dma_0_channel);
 	platform_device_register(&iop3xx_dma_1_channel);

 	if (is_ep80219())
 		pm_power_off = ep80219_power_off;

 	if (!is_80219())
 		platform_device_register(&iop3xx_aau_channel);
 }

 static int __init force_ep80219_setup(char *str)
 {
 	force_ep80219 = 1;
 	return 1;
 }

 __setup("force_ep80219", force_ep80219_setup);

 MACHINE_START(IQ31244, "Intel IQ31244")
 	/* Maintainer: Intel Corp. */
 	.phys_io	= IQ31244_UART,
 	.io_pg_offst	= ((IQ31244_UART) >> 18) & 0xfffc,
 	.boot_params	= 0xa0000100,
 	.map_io		= iq31244_map_io,
 	.init_irq	= iop32x_init_irq,
 	.timer		= &iq31244_timer,
 	.init_machine	= iq31244_init_machine,
 MACHINE_END

 /* There should have been an ep80219 machine identifier from the beginning.
  * Boot roms older than March 2007 do not know the ep80219 machine id.  Pass
  * "force_ep80219" on the kernel command line, otherwise iq31244 operation
  * will be selected.
  */
 MACHINE_START(EP80219, "Intel EP80219")
 	/* Maintainer: Intel Corp. */
 	.phys_io	= IQ31244_UART,
 	.io_pg_offst	= ((IQ31244_UART) >> 18) & 0xfffc,
 	.boot_params	= 0xa0000100,
 	.map_io		= iq31244_map_io,
 	.init_irq	= iop32x_init_irq,
 	.timer		= &iq31244_timer,
 	.init_machine	= iq31244_init_machine,
 MACHINE_END
	/*
	* arch/arm/mach-iop32x/iq31244.c
	*
	* Board support code for the Intel EP80219 and IQ31244 platforms.
	*
	* Author: Rory Bolt <rorybolt@pacbell.net>
	* Copyright (C) 2002 Rory Bolt
	* Copyright 2003 (c) MontaVista, Software, Inc.
	* Copyright (C) 2004 Intel Corp.
	*
	* This program is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License as published by the
	* Free Software Foundation; either version 2 of the License, or (at your
	* option) any later version.
	*/

	#include <linux/mm.h>
	#include <linux/init.h>
	#include <linux/delay.h>
	#include <linux/kernel.h>
	#include <linux/pci.h>
	#include <linux/pm.h>
	#include <linux/string.h>
	#include <linux/slab.h>
	#include <linux/serial_core.h>
	#include <linux/serial_8250.h>
	#include <linux/mtd/physmap.h>
	#include <linux/platform_device.h>
	#include <linux/io.h>
	#include <mach/hardware.h>
	#include <asm/cputype.h>
	#include <asm/irq.h>
	#include <asm/mach/arch.h>
	#include <asm/mach/map.h>
	#include <asm/mach/pci.h>
	#include <asm/mach/time.h>
	#include <asm/mach-types.h>
	#include <asm/page.h>
	#include <asm/pgtable.h>
	#include <mach/time.h>

	/*
	* Until March of 2007 iq31244 platforms and ep80219 platforms shared the
	* same machine id, and the processor type was used to select board type.
	* However this assumption breaks for an iq80219 board which is an iop219
	* processor on an iq31244 board. The force_ep80219 flag has been added
	* for old boot loaders using the iq31244 machine id for an ep80219 platform.
	*/
	static int force_ep80219;

	static int is_80219(void)
	{
	return !!((read_cpuid_id() & 0xffffffe0) == 0x69052e20);
	}

	static int is_ep80219(void)
	{
	if (machine_is_ep80219() \|\| force_ep80219)
	return 1;
	else
	return 0;
	}


	/*
	* EP80219/IQ31244 timer tick configuration.
	*/
	static void __init iq31244_timer_init(void)
	{
	if (is_ep80219()) {
	/* 33.333 MHz crystal. */
	iop_init_time(200000000);
	} else {
	/* 33.000 MHz crystal. */
	iop_init_time(198000000);
	}
	}

	static struct sys_timer iq31244_timer = {
	.init = iq31244_timer_init,
	.offset = iop_gettimeoffset,
	};


	/*
	* IQ31244 I/O.
	*/
	static struct map_desc iq31244_io_desc[] __initdata = {
	{ /* on-board devices */
	.virtual = IQ31244_UART,
	.pfn = __phys_to_pfn(IQ31244_UART),
	.length = 0x00100000,
	.type = MT_DEVICE,
	},
	};

	void __init iq31244_map_io(void)
	{
	iop3xx_map_io();
	iotable_init(iq31244_io_desc, ARRAY_SIZE(iq31244_io_desc));
	}


	/*
	* EP80219/IQ31244 PCI.
	*/
	static int __init
	ep80219_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
	{
	int irq;

	if (slot == 0) {
	/* CFlash */
	irq = IRQ_IOP32X_XINT1;
	} else if (slot == 1) {
	/* 82551 Pro 100 */
	irq = IRQ_IOP32X_XINT0;
	} else if (slot == 2) {
	/* PCI-X Slot */
	irq = IRQ_IOP32X_XINT3;
	} else if (slot == 3) {
	/* SATA */
	irq = IRQ_IOP32X_XINT2;
	} else {
	printk(KERN_ERR "ep80219_pci_map_irq() called for unknown "
	"device PCI:%d:%d:%d\n", dev->bus->number,
	PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
	irq = -1;
	}

	return irq;
	}

	static struct hw_pci ep80219_pci __initdata = {
	.swizzle = pci_std_swizzle,
	.nr_controllers = 1,
	.setup = iop3xx_pci_setup,
	.preinit = iop3xx_pci_preinit,
	.scan = iop3xx_pci_scan_bus,
	.map_irq = ep80219_pci_map_irq,
	};

	static int __init
	iq31244_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
	{
	int irq;

	if (slot == 0) {
	/* CFlash */
	irq = IRQ_IOP32X_XINT1;
	} else if (slot == 1) {
	/* SATA */
	irq = IRQ_IOP32X_XINT2;
	} else if (slot == 2) {
	/* PCI-X Slot */
	irq = IRQ_IOP32X_XINT3;
	} else if (slot == 3) {
	/* 82546 GigE */
	irq = IRQ_IOP32X_XINT0;
	} else {
	printk(KERN_ERR "iq31244_pci_map_irq called for unknown "
	"device PCI:%d:%d:%d\n", dev->bus->number,
	PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
	irq = -1;
	}

	return irq;
	}

	static struct hw_pci iq31244_pci __initdata = {
	.swizzle = pci_std_swizzle,
	.nr_controllers = 1,
	.setup = iop3xx_pci_setup,
	.preinit = iop3xx_pci_preinit,
	.scan = iop3xx_pci_scan_bus,
	.map_irq = iq31244_pci_map_irq,
	};

	static int __init iq31244_pci_init(void)
	{
	if (is_ep80219())
	pci_common_init(&ep80219_pci);
	else if (machine_is_iq31244()) {
	if (is_80219()) {
	printk("note: iq31244 board type has been selected\n");
	printk("note: to select ep80219 operation:\n");
	printk("\t1/ specify \"force_ep80219\" on the kernel"
	" command line\n");
	printk("\t2/ update boot loader to pass"
	" the ep80219 id: %d\n", MACH_TYPE_EP80219);
	}
	pci_common_init(&iq31244_pci);
	}

	return 0;
	}

	subsys_initcall(iq31244_pci_init);


	/*
	* IQ31244 machine initialisation.
	*/
	static struct physmap_flash_data iq31244_flash_data = {
	.width = 2,
	};

	static struct resource iq31244_flash_resource = {
	.start = 0xf0000000,
	.end = 0xf07fffff,
	.flags = IORESOURCE_MEM,
	};

	static struct platform_device iq31244_flash_device = {
	.name = "physmap-flash",
	.id = 0,
	.dev = {
	.platform_data = &iq31244_flash_data,
	},
	.num_resources = 1,
	.resource = &iq31244_flash_resource,
	};

	static struct plat_serial8250_port iq31244_serial_port[] = {
	{
	.mapbase = IQ31244_UART,
	.membase = (char *)IQ31244_UART,
	.irq = IRQ_IOP32X_XINT1,
	.flags = UPF_SKIP_TEST,
	.iotype = UPIO_MEM,
	.regshift = 0,
	.uartclk = 1843200,
	},
	{ },
	};

	static struct resource iq31244_uart_resource = {
	.start = IQ31244_UART,
	.end = IQ31244_UART + 7,
	.flags = IORESOURCE_MEM,
	};

	static struct platform_device iq31244_serial_device = {
	.name = "serial8250",
	.id = PLAT8250_DEV_PLATFORM,
	.dev = {
	.platform_data = iq31244_serial_port,
	},
	.num_resources = 1,
	.resource = &iq31244_uart_resource,
	};

	/*
	* This function will send a SHUTDOWN_COMPLETE message to the PIC
	* controller over I2C. We are not using the i2c subsystem since
	* we are going to power off and it may be removed
	*/
	void ep80219_power_off(void)
	{
	/*
	* Send the Address byte w/ the start condition
	*/
	*IOP3XX_IDBR1 = 0x60;
	*IOP3XX_ICR1 = 0xE9;
	mdelay(1);

	/*
	* Send the START_MSG byte w/ no start or stop condition
	*/
	*IOP3XX_IDBR1 = 0x0F;
	*IOP3XX_ICR1 = 0xE8;
	mdelay(1);

	/*
	* Send the SHUTDOWN_COMPLETE Message ID byte w/ no start or
	* stop condition
	*/
	*IOP3XX_IDBR1 = 0x03;
	*IOP3XX_ICR1 = 0xE8;
	mdelay(1);

	/*
	* Send an ignored byte w/ stop condition
	*/
	*IOP3XX_IDBR1 = 0x00;
	*IOP3XX_ICR1 = 0xEA;

	while (1)
	;
	}

	static void __init iq31244_init_machine(void)
	{
	platform_device_register(&iop3xx_i2c0_device);
	platform_device_register(&iop3xx_i2c1_device);
	platform_device_register(&iq31244_flash_device);
	platform_device_register(&iq31244_serial_device);
	platform_device_register(&iop3xx_dma_0_channel);
	platform_device_register(&iop3xx_dma_1_channel);

	if (is_ep80219())
	pm_power_off = ep80219_power_off;

	if (!is_80219())
	platform_device_register(&iop3xx_aau_channel);
	}

	static int __init force_ep80219_setup(char *str)
	{
	force_ep80219 = 1;
	return 1;
	}

	__setup("force_ep80219", force_ep80219_setup);

	MACHINE_START(IQ31244, "Intel IQ31244")
	/* Maintainer: Intel Corp. */
	.phys_io = IQ31244_UART,
	.io_pg_offst = ((IQ31244_UART) >> 18) & 0xfffc,
	.boot_params = 0xa0000100,
	.map_io = iq31244_map_io,
	.init_irq = iop32x_init_irq,
	.timer = &iq31244_timer,
	.init_machine = iq31244_init_machine,
	MACHINE_END

	/* There should have been an ep80219 machine identifier from the beginning.
	* Boot roms older than March 2007 do not know the ep80219 machine id. Pass
	* "force_ep80219" on the kernel command line, otherwise iq31244 operation
	* will be selected.
	*/
	MACHINE_START(EP80219, "Intel EP80219")
	/* Maintainer: Intel Corp. */
	.phys_io = IQ31244_UART,
	.io_pg_offst = ((IQ31244_UART) >> 18) & 0xfffc,
	.boot_params = 0xa0000100,
	.map_io = iq31244_map_io,
	.init_irq = iop32x_init_irq,
	.timer = &iq31244_timer,
	.init_machine = iq31244_init_machine,
	MACHINE_END