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
31 #include "bast.h"
32 #include "simtec.h"
33
simtec_nor_vpp(struct platform_device * pdev,int vpp)34 static void simtec_nor_vpp(struct platform_device *pdev, int vpp)
35 {
36 unsigned int val;
37
38 val = __raw_readb(BAST_VA_CTRL3);
39
40 printk(KERN_DEBUG "%s(%d)\n", __func__, vpp);
41
42 if (vpp)
43 val |= BAST_CPLD_CTRL3_ROMWEN;
44 else
45 val &= ~BAST_CPLD_CTRL3_ROMWEN;
46
47 __raw_writeb(val, BAST_VA_CTRL3);
48 }
49
50 static struct physmap_flash_data simtec_nor_pdata = {
51 .width = 2,
52 .set_vpp = simtec_nor_vpp,
53 .nr_parts = 0,
54 };
55
56 static struct resource simtec_nor_resource[] = {
57 [0] = DEFINE_RES_MEM(S3C2410_CS1 + 0x4000000, SZ_8M),
58 };
59
60 static struct platform_device simtec_device_nor = {
61 .name = "physmap-flash",
62 .id = -1,
63 .num_resources = ARRAY_SIZE(simtec_nor_resource),
64 .resource = simtec_nor_resource,
65 .dev = {
66 .platform_data = &simtec_nor_pdata,
67 },
68 };
69
nor_simtec_init(void)70 void __init nor_simtec_init(void)
71 {
72 int ret;
73
74 ret = platform_device_register(&simtec_device_nor);
75 if (ret < 0)
76 printk(KERN_ERR "failed to register physmap-flash device\n");
77 else
78 simtec_nor_vpp(NULL, 1);
79 }
80