arch/arm/mach-ep93xx/ts72xx.c

/*
 * arch/arm/mach-ep93xx/ts72xx.c
 * Technologic Systems TS72xx SBC support.
 *
 * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
 *
 * 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/config.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/mtd/physmap.h>
#include <asm/io.h>
#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>

static struct map_desc ts72xx_io_desc[] __initdata = {
	{
		.virtual	= TS72XX_MODEL_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_MODEL_PHYS_BASE),
		.length		= TS72XX_MODEL_SIZE,
		.type		= MT_DEVICE,
	}, {
		.virtual	= TS72XX_OPTIONS_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_OPTIONS_PHYS_BASE),
		.length		= TS72XX_OPTIONS_SIZE,
		.type		= MT_DEVICE,
	}, {
		.virtual	= TS72XX_OPTIONS2_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_OPTIONS2_PHYS_BASE),
		.length		= TS72XX_OPTIONS2_SIZE,
		.type		= MT_DEVICE,
	}
};

static struct map_desc ts72xx_nand_io_desc[] __initdata = {
	{
		.virtual	= TS72XX_NAND_DATA_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_NAND1_DATA_PHYS_BASE),
		.length		= TS72XX_NAND_DATA_SIZE,
		.type		= MT_DEVICE,
	}, {
		.virtual	= TS72XX_NAND_CONTROL_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_NAND1_CONTROL_PHYS_BASE),
		.length		= TS72XX_NAND_CONTROL_SIZE,
		.type		= MT_DEVICE,
	}, {
		.virtual	= TS72XX_NAND_BUSY_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_NAND1_BUSY_PHYS_BASE),
		.length		= TS72XX_NAND_BUSY_SIZE,
		.type		= MT_DEVICE,
	}
};

static struct map_desc ts72xx_alternate_nand_io_desc[] __initdata = {
	{
		.virtual	= TS72XX_NAND_DATA_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_NAND2_DATA_PHYS_BASE),
		.length		= TS72XX_NAND_DATA_SIZE,
		.type		= MT_DEVICE,
	}, {
		.virtual	= TS72XX_NAND_CONTROL_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_NAND2_CONTROL_PHYS_BASE),
		.length		= TS72XX_NAND_CONTROL_SIZE,
		.type		= MT_DEVICE,
	}, {
		.virtual	= TS72XX_NAND_BUSY_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_NAND2_BUSY_PHYS_BASE),
		.length		= TS72XX_NAND_BUSY_SIZE,
		.type		= MT_DEVICE,
	}
};

static void __init ts72xx_map_io(void)
{
	ep93xx_map_io();
	iotable_init(ts72xx_io_desc, ARRAY_SIZE(ts72xx_io_desc));

	/*
	 * The TS-7200 has NOR flash, the other models have NAND flash.
	 */
	if (!board_is_ts7200()) {
		if (is_ts9420_installed()) {
			iotable_init(ts72xx_alternate_nand_io_desc,
				ARRAY_SIZE(ts72xx_alternate_nand_io_desc));
		} else {
			iotable_init(ts72xx_nand_io_desc,
				ARRAY_SIZE(ts72xx_nand_io_desc));
		}
	}
}

static void __init ts72xx_init_machine(void)
{
	ep93xx_init_devices();
	if (board_is_ts7200())
		physmap_configure(TS72XX_NOR_PHYS_BASE, 0x01000000, 1, NULL);
}

MACHINE_START(TS72XX, "Technologic Systems TS-72xx SBC")
	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
	.phys_io	= EP93XX_APB_PHYS_BASE,
	.io_pg_offst	= ((EP93XX_APB_VIRT_BASE) >> 18) & 0xfffc,
	.boot_params	= 0x00000100,
	.map_io		= ts72xx_map_io,
	.init_irq	= ep93xx_init_irq,
	.timer		= &ep93xx_timer,
	.init_machine	= ts72xx_init_machine,
MACHINE_END