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 "nor-simtec.h" 34 35static void simtec_nor_vpp(struct map_info *map, int vpp) 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 54static struct physmap_flash_data simtec_nor_pdata = { 55 .width = 2, 56 .set_vpp = simtec_nor_vpp, 57 .nr_parts = 0, 58}; 59 60static 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 68static 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 78void __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} 88