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
simtec_nor_vpp(struct platform_device * pdev,int vpp)35 static 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
51 static struct physmap_flash_data simtec_nor_pdata = {
52 .width = 2,
53 .set_vpp = simtec_nor_vpp,
54 .nr_parts = 0,
55 };
56
57 static 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
65 static 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
nor_simtec_init(void)75 void __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