/arch/arm/mach-cns3xxx/cns3420vb.c

  1/*
  2 * Cavium Networks CNS3420 Validation Board
  3 *
  4 * Copyright 2000 Deep Blue Solutions Ltd
  5 * Copyright 2008 ARM Limited
  6 * Copyright 2008 Cavium Networks
  7 *		  Scott Shu
  8 * Copyright 2010 MontaVista Software, LLC.
  9 *		  Anton Vorontsov <avorontsov@mvista.com>
 10 *
 11 * This file is free software; you can redistribute it and/or modify
 12 * it under the terms of the GNU General Public License, Version 2, as
 13 * published by the Free Software Foundation.
 14 */
 15
 16#include <linux/init.h>
 17#include <linux/kernel.h>
 18#include <linux/compiler.h>
 19#include <linux/io.h>
 20#include <linux/serial_core.h>
 21#include <linux/serial_8250.h>
 22#include <linux/platform_device.h>
 23#include <linux/mtd/mtd.h>
 24#include <linux/mtd/physmap.h>
 25#include <linux/mtd/partitions.h>
 26#include <asm/setup.h>
 27#include <asm/mach-types.h>
 28#include <asm/mach/arch.h>
 29#include <asm/mach/map.h>
 30#include <asm/mach/time.h>
 31#include <mach/hardware.h>
 32#include <mach/cns3xxx.h>
 33#include <mach/irqs.h>
 34#include "core.h"
 35
 36/*
 37 * NOR Flash
 38 */
 39static struct mtd_partition cns3420_nor_partitions[] = {
 40	{
 41		.name		= "uboot",
 42		.size		= 0x00040000,
 43		.offset		= 0,
 44		.mask_flags	= MTD_WRITEABLE,
 45	}, {
 46		.name		= "kernel",
 47		.size		= 0x004C0000,
 48		.offset		= MTDPART_OFS_APPEND,
 49	}, {
 50		.name		= "filesystem",
 51		.size		= 0x7000000,
 52		.offset		= MTDPART_OFS_APPEND,
 53	}, {
 54		.name		= "filesystem2",
 55		.size		= 0x0AE0000,
 56		.offset		= MTDPART_OFS_APPEND,
 57	}, {
 58		.name		= "ubootenv",
 59		.size		= MTDPART_SIZ_FULL,
 60		.offset		= MTDPART_OFS_APPEND,
 61	},
 62};
 63
 64static struct physmap_flash_data cns3420_nor_pdata = {
 65	.width = 2,
 66	.parts = cns3420_nor_partitions,
 67	.nr_parts = ARRAY_SIZE(cns3420_nor_partitions),
 68};
 69
 70static struct resource cns3420_nor_res = {
 71	.start = CNS3XXX_FLASH_BASE,
 72	.end = CNS3XXX_FLASH_BASE + SZ_128M - 1,
 73	.flags = IORESOURCE_MEM | IORESOURCE_MEM_32BIT,
 74};
 75
 76static struct platform_device cns3420_nor_pdev = {
 77	.name = "physmap-flash",
 78	.id = 0,
 79	.resource = &cns3420_nor_res,
 80	.num_resources = 1,
 81	.dev = {
 82		.platform_data = &cns3420_nor_pdata,
 83	},
 84};
 85
 86/*
 87 * UART
 88 */
 89static void __init cns3420_early_serial_setup(void)
 90{
 91#ifdef CONFIG_SERIAL_8250_CONSOLE
 92	static struct uart_port cns3420_serial_port = {
 93		.membase        = (void __iomem *)CNS3XXX_UART0_BASE_VIRT,
 94		.mapbase        = CNS3XXX_UART0_BASE,
 95		.irq            = IRQ_CNS3XXX_UART0,
 96		.iotype         = UPIO_MEM,
 97		.flags          = UPF_BOOT_AUTOCONF | UPF_FIXED_TYPE,
 98		.regshift       = 2,
 99		.uartclk        = 24000000,
100		.line           = 0,
101		.type           = PORT_16550A,
102		.fifosize       = 16,
103	};
104
105	early_serial_setup(&cns3420_serial_port);
106#endif
107}
108
109/*
110 * Initialization
111 */
112static struct platform_device *cns3420_pdevs[] __initdata = {
113	&cns3420_nor_pdev,
114};
115
116static void __init cns3420_init(void)
117{
118	platform_add_devices(cns3420_pdevs, ARRAY_SIZE(cns3420_pdevs));
119
120	pm_power_off = cns3xxx_power_off;
121}
122
123static struct map_desc cns3420_io_desc[] __initdata = {
124	{
125		.virtual	= CNS3XXX_UART0_BASE_VIRT,
126		.pfn		= __phys_to_pfn(CNS3XXX_UART0_BASE),
127		.length		= SZ_4K,
128		.type		= MT_DEVICE,
129	},
130};
131
132static void __init cns3420_map_io(void)
133{
134	cns3xxx_map_io();
135	iotable_init(cns3420_io_desc, ARRAY_SIZE(cns3420_io_desc));
136
137	cns3420_early_serial_setup();
138}
139
140MACHINE_START(CNS3420VB, "Cavium Networks CNS3420 Validation Board")
141	.phys_io	= CNS3XXX_UART0_BASE,
142	.io_pg_offst	= (CNS3XXX_UART0_BASE_VIRT >> 18) & 0xfffc,
143	.boot_params	= 0x00000100,
144	.map_io		= cns3420_map_io,
145	.init_irq	= cns3xxx_init_irq,
146	.timer		= &cns3xxx_timer,
147	.init_machine	= cns3420_init,
148MACHINE_END