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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 | ||
a09e64fb RK |
29 | #include <mach/map.h> |
30 | #include <mach/bast-map.h> | |
31 | #include <mach/bast-cpld.h> | |
9d529c6e BD |
32 | |
33 | ||
34 | static void simtec_nor_vpp(struct map_info *map, int vpp) | |
35 | { | |
36 | unsigned int val; | |
37 | unsigned long flags; | |
38 | ||
39 | local_irq_save(flags); | |
40 | val = __raw_readb(BAST_VA_CTRL3); | |
41 | ||
42 | printk(KERN_DEBUG "%s(%d)\n", __func__, vpp); | |
43 | ||
44 | if (vpp) | |
45 | val |= BAST_CPLD_CTRL3_ROMWEN; | |
46 | else | |
47 | val &= ~BAST_CPLD_CTRL3_ROMWEN; | |
48 | ||
49 | __raw_writeb(val, BAST_VA_CTRL3); | |
50 | local_irq_restore(flags); | |
51 | } | |
52 | ||
53 | struct physmap_flash_data simtec_nor_pdata = { | |
54 | .width = 2, | |
55 | .set_vpp = simtec_nor_vpp, | |
56 | .nr_parts = 0, | |
57 | }; | |
58 | ||
59 | static struct resource simtec_nor_resource[] = { | |
60 | [0] = { | |
61 | .start = S3C2410_CS1 + 0x4000000, | |
62 | .end = S3C2410_CS1 + 0x4000000 + SZ_8M - 1, | |
63 | .flags = IORESOURCE_MEM, | |
64 | } | |
65 | }; | |
66 | ||
67 | static struct platform_device simtec_device_nor = { | |
68 | .name = "physmap-flash", | |
69 | .id = -1, | |
70 | .num_resources = ARRAY_SIZE(simtec_nor_resource), | |
71 | .resource = simtec_nor_resource, | |
72 | .dev = { | |
73 | .platform_data = &simtec_nor_pdata, | |
74 | }, | |
75 | }; | |
76 | ||
77 | void __init nor_simtec_init(void) | |
78 | { | |
79 | int ret; | |
80 | ||
81 | ret = platform_device_register(&simtec_device_nor); | |
82 | if (ret < 0) | |
83 | printk(KERN_ERR "failed to register physmap-flash device\n"); | |
84 | else | |
85 | simtec_nor_vpp(NULL, 1); | |
86 | } |