diff options
Diffstat (limited to 'arch/arm/mach-s3c2410/nor-simtec.c')
-rw-r--r-- | arch/arm/mach-s3c2410/nor-simtec.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c2410/nor-simtec.c b/arch/arm/mach-s3c2410/nor-simtec.c new file mode 100644 index 000000000000..f44e21b9c3ba --- /dev/null +++ b/arch/arm/mach-s3c2410/nor-simtec.c | |||
@@ -0,0 +1,86 @@ | |||
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 <asm/arch/map.h> | ||
30 | #include <asm/arch/bast-map.h> | ||
31 | #include <asm/arch/bast-cpld.h> | ||
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 | } | ||