projects / deliverable / linux.git / blame
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|---|---|---|
| 9d529c6e BD |
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 | 32 | |
| ec829234 | 33 | #include "nor-simtec.h" |
| 9d529c6e | 34 | |
| 667f390b | 35 | static void simtec_nor_vpp(struct platform_device *pdev, int vpp) |
| 9d529c6e BD |
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 | ||
| ec829234 | 54 | static struct physmap_flash_data simtec_nor_pdata = { |
| 9d529c6e BD |
55 | .width = 2, |
| 56 | .set_vpp = simtec_nor_vpp, | |
| 57 | .nr_parts = 0, | |
| 58 | }; | |
| 59 | ||
| 60 | static 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 | ||
| 68 | static 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 | ||
| 78 | void __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 | } |