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Ben Dooks9d529c62008-07-03 11:24:39 +01001/* 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
Russell Kinga09e64f2008-08-05 16:14:15 +010029#include <mach/map.h>
30#include <mach/bast-map.h>
31#include <mach/bast-cpld.h>
Ben Dooks9d529c62008-07-03 11:24:39 +010032
Ben Dooksec829232008-08-26 22:54:02 +010033#include "nor-simtec.h"
Ben Dooks9d529c62008-07-03 11:24:39 +010034
35static void simtec_nor_vpp(struct map_info *map, int vpp)
36{
37 unsigned int val;
38 unsigned long flags;
39
40 local_irq_save(flags);
41 val = __raw_readb(BAST_VA_CTRL3);
42
43 printk(KERN_DEBUG "%s(%d)\n", __func__, vpp);
44
45 if (vpp)
46 val |= BAST_CPLD_CTRL3_ROMWEN;
47 else
48 val &= ~BAST_CPLD_CTRL3_ROMWEN;
49
50 __raw_writeb(val, BAST_VA_CTRL3);
51 local_irq_restore(flags);
52}
53
Ben Dooksec829232008-08-26 22:54:02 +010054static struct physmap_flash_data simtec_nor_pdata = {
Ben Dooks9d529c62008-07-03 11:24:39 +010055 .width = 2,
56 .set_vpp = simtec_nor_vpp,
57 .nr_parts = 0,
58};
59
60static struct resource simtec_nor_resource[] = {
61 [0] = {
62 .start = S3C2410_CS1 + 0x4000000,
63 .end = S3C2410_CS1 + 0x4000000 + SZ_8M - 1,
64 .flags = IORESOURCE_MEM,
65 }
66};
67
68static struct platform_device simtec_device_nor = {
69 .name = "physmap-flash",
70 .id = -1,
71 .num_resources = ARRAY_SIZE(simtec_nor_resource),
72 .resource = simtec_nor_resource,
73 .dev = {
74 .platform_data = &simtec_nor_pdata,
75 },
76};
77
78void __init nor_simtec_init(void)
79{
80 int ret;
81
82 ret = platform_device_register(&simtec_device_nor);
83 if (ret < 0)
84 printk(KERN_ERR "failed to register physmap-flash device\n");
85 else
86 simtec_nor_vpp(NULL, 1);
87}