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 35static 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 51static struct physmap_flash_data simtec_nor_pdata = { 52 .width = 2, 53 .set_vpp = simtec_nor_vpp, 54 .nr_parts = 0, 55}; 56 57static 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 65static 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 75void __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