1/* linux/arch/arm/mach-s3c2410/nor-simtec.c
2 *
3 * Copyright (c) 2008 Simtec Electronics
4 *	http://armlinux.simtec.co.uk/
5 *	Ben Dooks <ben@simtec.co.uk>
6 *
7 * Simtec NOR mapping
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12*/
13
14#include <linux/module.h>
15#include <linux/types.h>
16#include <linux/init.h>
17#include <linux/kernel.h>
18#include <linux/platform_device.h>
19
20#include <linux/mtd/mtd.h>
21#include <linux/mtd/map.h>
22#include <linux/mtd/physmap.h>
23#include <linux/mtd/partitions.h>
24
25#include <asm/mach/arch.h>
26#include <asm/mach/map.h>
27#include <asm/mach/irq.h>
28
29#include <mach/map.h>
30#include <mach/bast-map.h>
31#include <mach/bast-cpld.h>
32
33#include "simtec.h"
34
35static void simtec_nor_vpp(struct platform_device *pdev, int vpp)
36{
37	unsigned int val;
38
39	val = __raw_readb(BAST_VA_CTRL3);
40
41	printk(KERN_DEBUG "%s(%d)\n", __func__, vpp);
42
43	if (vpp)
44		val |= BAST_CPLD_CTRL3_ROMWEN;
45	else
46		val &= ~BAST_CPLD_CTRL3_ROMWEN;
47
48	__raw_writeb(val, BAST_VA_CTRL3);
49}
50
51static struct physmap_flash_data simtec_nor_pdata = {
52	.width		= 2,
53	.set_vpp	= simtec_nor_vpp,
54	.nr_parts	= 0,
55};
56
57static struct resource simtec_nor_resource[] = {
58	[0] = {
59		.start = S3C2410_CS1 + 0x4000000,
60		.end   = S3C2410_CS1 + 0x4000000 + SZ_8M - 1,
61		.flags = IORESOURCE_MEM,
62	}
63};
64
65static struct platform_device simtec_device_nor = {
66	.name		= "physmap-flash",
67	.id		= -1,
68	.num_resources	= ARRAY_SIZE(simtec_nor_resource),
69	.resource	= simtec_nor_resource,
70	.dev		= {
71		.platform_data = &simtec_nor_pdata,
72	},
73};
74
75void __init nor_simtec_init(void)
76{
77	int ret;
78
79	ret = platform_device_register(&simtec_device_nor);
80	if (ret < 0)
81		printk(KERN_ERR "failed to register physmap-flash device\n");
82	else
83		simtec_nor_vpp(NULL, 1);
84}
85