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Commit a8135fcf authored by Arnaud Patard's avatar Arnaud Patard Committed by Russell King
Browse files

[ARM] 4476/1: EM7210/SS4000E support 



This patch adds the basic support for the em7210 board. It is similar to
the iq31244 board and can be found on Intel "Baxter Creek" ss4000e nas.

Signed-off-by: default avatarArnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 9a79b227

arch/arm/mach-iop32x/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -42,6 +42,13 @@ config IOP3XX_ATU 
          Say N if the IOP is an add in card, the host system owns the PCI

          bus in this case.



config MACH_EM7210

	bool "Enable support for the Lanner EM7210"

	help

	  Say Y here if you want to run your kernel on the Lanner EM7210

	  board. Say also Y here if you have a SS4000e Baxter Creek NAS

	  appliance."



endmenu



endif

arch/arm/mach-iop32x/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -11,3 +11,4 @@ obj-$(CONFIG_MACH_GLANTANK) += glantank.o 
obj-$(CONFIG_ARCH_IQ80321) += iq80321.o

obj-$(CONFIG_ARCH_IQ31244) += iq31244.o

obj-$(CONFIG_MACH_N2100) += n2100.o

obj-$(CONFIG_MACH_EM7210) += em7210.o

arch/arm/mach-iop32x/em7210.c

0 → 100644
+202 −0
Original line number Diff line number Diff line 
/*

 * arch/arm/mach-iop32x/em7210.c

 *

 * Board support code for the Lanner EM7210 platforms.

 *

 * Based on arch/arm/mach-iop32x/iq31244.c file.

 *

 * Copyright (C) 2007 Arnaud Patard <arnaud.patard@rtp-net.org>

 *

 * 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/mm.h>

#include <linux/init.h>

#include <linux/kernel.h>

#include <linux/pci.h>

#include <linux/pm.h>

#include <linux/serial_core.h>

#include <linux/serial_8250.h>

#include <linux/mtd/physmap.h>

#include <linux/platform_device.h>

#include <asm/hardware.h>

#include <linux/io.h>

#include <linux/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/arch/time.h>



static void __init em7210_timer_init(void)

{

	/* http://www.kwaak.net/fotos/fotos-nas/slide_24.html */

	/* 33.333 MHz crystal.                                */

	iop_init_time(200000000);

}



static struct sys_timer em7210_timer = {

	.init		= em7210_timer_init,

	.offset		= iop_gettimeoffset,

};





/*

 * EM7210 I/O

 */

static struct map_desc em7210_io_desc[] __initdata = {

	{	/* on-board devices */

		.virtual	= IQ31244_UART,

		.pfn		= __phys_to_pfn(IQ31244_UART),

		.length		= 0x00100000,

		.type		= MT_DEVICE,

	},

};



void __init em7210_map_io(void)

{

	iop3xx_map_io();

	iotable_init(em7210_io_desc, ARRAY_SIZE(em7210_io_desc));

}





/*

 * EM7210 PCI

 */

#define INTA	IRQ_IOP32X_XINT0

#define INTB	IRQ_IOP32X_XINT1

#define INTC	IRQ_IOP32X_XINT2

#define INTD	IRQ_IOP32X_XINT3



static int __init

em7210_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)

{

	static int pci_irq_table[][4] = {

		/*

		 * PCI IDSEL/INTPIN->INTLINE

		 * A       B       C       D

		 */

		{INTB, INTB, INTB, INTB}, /* console / uart */

		{INTA, INTA, INTA, INTA}, /* 1st 82541      */

		{INTD, INTD, INTD, INTD}, /* 2nd 82541      */

		{INTC, INTC, INTC, INTC}, /* GD31244        */

		{INTD, INTA, INTA, INTA}, /* mini-PCI       */

		{INTD, INTC, INTA, INTA}, /* NEC USB        */

	};



	if (pin < 1 || pin > 4)

		return -1;



	return pci_irq_table[slot % 6][pin - 1];

}



static struct hw_pci em7210_pci __initdata = {

	.swizzle	= pci_std_swizzle,

	.nr_controllers = 1,

	.setup		= iop3xx_pci_setup,

	.preinit	= iop3xx_pci_preinit,

	.scan		= iop3xx_pci_scan_bus,

	.map_irq	= em7210_pci_map_irq,

};



static int __init em7210_pci_init(void)

{

	if (machine_is_em7210())

		pci_common_init(&em7210_pci);



	return 0;

}



subsys_initcall(em7210_pci_init);





/*

 * EM7210 Flash

 */

static struct physmap_flash_data em7210_flash_data = {

	.width		= 2,

};



static struct resource em7210_flash_resource = {

	.start		= 0xf0000000,

	.end		= 0xf1ffffff,

	.flags		= IORESOURCE_MEM,

};



static struct platform_device em7210_flash_device = {

	.name		= "physmap-flash",

	.id		= 0,

	.dev		= {

		.platform_data	= &em7210_flash_data,

	},

	.num_resources	= 1,

	.resource	= &em7210_flash_resource,

};





/*

 * EM7210 UART

 * The physical address of the serial port is 0xfe800000,

 * so it can be used for physical and virtual address.

 */

static struct plat_serial8250_port em7210_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 em7210_uart_resource = {

	.start		= IQ31244_UART,

	.end		= IQ31244_UART + 7,

	.flags		= IORESOURCE_MEM,

};



static struct platform_device em7210_serial_device = {

	.name		= "serial8250",

	.id		= PLAT8250_DEV_PLATFORM,

	.dev		= {

		.platform_data		= em7210_serial_port,

	},

	.num_resources	= 1,

	.resource	= &em7210_uart_resource,

};



void em7210_power_off(void)

{

	*IOP3XX_GPOE &= 0xfe;

	*IOP3XX_GPOD |= 0x01;

}



static void __init em7210_init_machine(void)

{

	platform_device_register(&em7210_serial_device);

	platform_device_register(&iop3xx_i2c0_device);

	platform_device_register(&iop3xx_i2c1_device);

	platform_device_register(&em7210_flash_device);

	platform_device_register(&iop3xx_dma_0_channel);

	platform_device_register(&iop3xx_dma_1_channel);





	pm_power_off = em7210_power_off;

}



MACHINE_START(EM7210, "Lanner EM7210")

	.phys_io	= IQ31244_UART,

	.io_pg_offst	= ((IQ31244_UART) >> 18) & 0xfffc,

	.boot_params	= 0xa0000100,

	.map_io		= em7210_map_io,

	.init_irq	= iop32x_init_irq,

	.timer		= &em7210_timer,

	.init_machine	= em7210_init_machine,

MACHINE_END

arch/arm/mach-iop32x/irq.c

+2 −1
Original line number Diff line number Diff line
@@ -63,7 +63,8 @@ void __init iop32x_init_irq(void) 
	if (machine_is_glantank() ||

	    machine_is_iq80321() ||

	    machine_is_iq31244() ||

	    machine_is_n2100())

	    machine_is_n2100() ||

	    machine_is_em7210())

		*IOP3XX_PCIIRSR = 0x0f;



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

include/asm-arm/arch-iop32x/uncompress.h

+1 −1
Original line number Diff line number Diff line
@@ -26,7 +26,7 @@ static __inline__ void __arch_decomp_setup(unsigned long arch_id) 
{

	if (machine_is_iq80321())

		uart_base = (volatile u8 *)IQ80321_UART;

	else if (machine_is_iq31244())

	else if (machine_is_iq31244() || machine_is_em7210())

		uart_base = (volatile u8 *)IQ31244_UART;

	else

		uart_base = (volatile u8 *)0xfe800000;