amlogic-aml8726-mx-kernel/arch/arm/mach-sa1100/nanoengine.c

/*
 * linux/arch/arm/mach-sa1100/nanoengine.c
 *
 * Bright Star Engineering's nanoEngine board init code.
 *
 * Copyright (C) 2010 Marcelo Roberto Jimenez <mroberto@cpti.cetuc.puc-rio.br>
 *
 * 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/init.h>
#include <linux/kernel.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/root_dev.h>

#include <asm/mach-types.h>
#include <asm/setup.h>

#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include <asm/mach/map.h>
#include <asm/mach/serial_sa1100.h>

#include <mach/hardware.h>
#include <mach/nanoengine.h>

#include "generic.h"

/* Flash bank 0 */
static struct mtd_partition nanoengine_partitions[] = {
	{
		.name	= "nanoEngine boot firmware and parameter table",
		.size		= 0x00010000,  /* 32K */
		.offset		= 0,
		.mask_flags	= MTD_WRITEABLE,
	}, {
		.name		= "kernel/initrd reserved",
		.size		= 0x002f0000,
		.offset		= 0x00010000,
		.mask_flags	= MTD_WRITEABLE,
	}, {
		.name		= "experimental filesystem allocation",
		.size		= 0x00100000,
		.offset		= 0x00300000,
		.mask_flags	= MTD_WRITEABLE,
	}
};

static struct flash_platform_data nanoengine_flash_data = {
	.map_name	= "jedec_probe",
	.parts		= nanoengine_partitions,
	.nr_parts	= ARRAY_SIZE(nanoengine_partitions),
};

static struct resource nanoengine_flash_resources[] = {
	{
		.start	= SA1100_CS0_PHYS,
		.end	= SA1100_CS0_PHYS + SZ_32M - 1,
		.flags	= IORESOURCE_MEM,
	}, {
		.start	= SA1100_CS1_PHYS,
		.end	= SA1100_CS1_PHYS + SZ_32M - 1,
		.flags	= IORESOURCE_MEM,
	}
};

static struct map_desc nanoengine_io_desc[] __initdata = {
	{
		/* System Registers */
		.virtual	= 0xf0000000,
		.pfn		= __phys_to_pfn(0x10000000),
		.length		= 0x00100000,
		.type		= MT_DEVICE
	}, {
		/* Internal PCI Memory Read/Write */
		.virtual	= NANO_PCI_MEM_RW_VIRT,
		.pfn		= __phys_to_pfn(NANO_PCI_MEM_RW_PHYS),
		.length		= NANO_PCI_MEM_RW_SIZE,
		.type		= MT_DEVICE
	}, {
		/* Internal PCI Config Space */
		.virtual	= NANO_PCI_CONFIG_SPACE_VIRT,
		.pfn		= __phys_to_pfn(NANO_PCI_CONFIG_SPACE_PHYS),
		.length		= NANO_PCI_CONFIG_SPACE_SIZE,
		.type		= MT_DEVICE
	}
};

static void __init nanoengine_map_io(void)
{
	sa1100_map_io();
	iotable_init(nanoengine_io_desc, ARRAY_SIZE(nanoengine_io_desc));

	sa1100_register_uart(0, 1);
	sa1100_register_uart(1, 2);
	sa1100_register_uart(2, 3);
	Ser1SDCR0 |= SDCR0_UART;
	/* disable IRDA -- UART2 is used as a normal serial port */
	Ser2UTCR4 = 0;
	Ser2HSCR0 = 0;
}

static void __init nanoengine_init(void)
{
	sa11x0_register_mtd(&nanoengine_flash_data, nanoengine_flash_resources,
		ARRAY_SIZE(nanoengine_flash_resources));
}

MACHINE_START(NANOENGINE, "BSE nanoEngine")
	.boot_params	= 0xc0000000,
	.map_io		= nanoengine_map_io,
	.init_irq	= sa1100_init_irq,
	.timer		= &sa1100_timer,
	.init_machine	= nanoengine_init,
MACHINE_END