1/* 2 * $Id: rpxlite.c,v 1.1.1.1 2007/08/03 18:52:44 Exp $ 3 * 4 * Handle mapping of the flash on the RPX Lite and CLLF boards 5 */ 6 7#include <linux/module.h> 8#include <linux/types.h> 9#include <linux/kernel.h> 10#include <linux/init.h> 11#include <asm/io.h> 12#include <linux/mtd/mtd.h> 13#include <linux/mtd/map.h> 14 15 16#define WINDOW_ADDR 0xfe000000 17#define WINDOW_SIZE 0x800000 18 19static struct mtd_info *mymtd; 20 21static struct map_info rpxlite_map = { 22 .name = "RPX", 23 .size = WINDOW_SIZE, 24 .bankwidth = 4, 25 .phys = WINDOW_ADDR, 26}; 27 28int __init init_rpxlite(void) 29{ 30 printk(KERN_NOTICE "RPX Lite or CLLF flash device: %x at %x\n", WINDOW_SIZE*4, WINDOW_ADDR); 31 rpxlite_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE * 4); 32 33 if (!rpxlite_map.virt) { 34 printk("Failed to ioremap\n"); 35 return -EIO; 36 } 37 simple_map_init(&rpxlite_map); 38 mymtd = do_map_probe("cfi_probe", &rpxlite_map); 39 if (mymtd) { 40 mymtd->owner = THIS_MODULE; 41 add_mtd_device(mymtd); 42 return 0; 43 } 44 45 iounmap((void *)rpxlite_map.virt); 46 return -ENXIO; 47} 48 49static void __exit cleanup_rpxlite(void) 50{ 51 if (mymtd) { 52 del_mtd_device(mymtd); 53 map_destroy(mymtd); 54 } 55 if (rpxlite_map.virt) { 56 iounmap((void *)rpxlite_map.virt); 57 rpxlite_map.virt = 0; 58 } 59} 60 61module_init(init_rpxlite); 62module_exit(cleanup_rpxlite); 63 64MODULE_LICENSE("GPL"); 65MODULE_AUTHOR("Arnold Christensen <AKC@pel.dk>"); 66MODULE_DESCRIPTION("MTD map driver for RPX Lite and CLLF boards"); 67