1/* 2 * Flash on MPC-1211 3 * 4 * $Id: mpc1211.c,v 1.1.1.1 2007/08/03 18:52:44 Exp $ 5 * 6 * (C) 2002 Interface, Saito.K & Jeanne 7 * 8 * GPL'd 9 */ 10 11#include <linux/module.h> 12#include <linux/types.h> 13#include <linux/kernel.h> 14#include <asm/io.h> 15#include <linux/mtd/mtd.h> 16#include <linux/mtd/map.h> 17#include <linux/mtd/partitions.h> 18 19static struct mtd_info *flash_mtd; 20static struct mtd_partition *parsed_parts; 21 22struct map_info mpc1211_flash_map = { 23 .name = "MPC-1211 FLASH", 24 .size = 0x80000, 25 .bankwidth = 1, 26}; 27 28static struct mtd_partition mpc1211_partitions[] = { 29 { 30 .name = "IPL & ETH-BOOT", 31 .offset = 0x00000000, 32 .size = 0x10000, 33 }, 34 { 35 .name = "Flash FS", 36 .offset = 0x00010000, 37 .size = MTDPART_SIZ_FULL, 38 } 39}; 40 41static int __init init_mpc1211_maps(void) 42{ 43 int nr_parts; 44 45 mpc1211_flash_map.phys = 0; 46 mpc1211_flash_map.virt = (void __iomem *)P2SEGADDR(0); 47 48 simple_map_init(&mpc1211_flash_map); 49 50 printk(KERN_NOTICE "Probing for flash chips at 0x00000000:\n"); 51 flash_mtd = do_map_probe("jedec_probe", &mpc1211_flash_map); 52 if (!flash_mtd) { 53 printk(KERN_NOTICE "Flash chips not detected at either possible location.\n"); 54 return -ENXIO; 55 } 56 printk(KERN_NOTICE "MPC-1211: Flash at 0x%08lx\n", mpc1211_flash_map.virt & 0x1fffffff); 57 flash_mtd->module = THIS_MODULE; 58 59 parsed_parts = mpc1211_partitions; 60 nr_parts = ARRAY_SIZE(mpc1211_partitions); 61 62 add_mtd_partitions(flash_mtd, parsed_parts, nr_parts); 63 return 0; 64} 65 66static void __exit cleanup_mpc1211_maps(void) 67{ 68 if (parsed_parts) 69 del_mtd_partitions(flash_mtd); 70 else 71 del_mtd_device(flash_mtd); 72 map_destroy(flash_mtd); 73} 74 75module_init(init_mpc1211_maps); 76module_exit(cleanup_mpc1211_maps); 77 78MODULE_LICENSE("GPL"); 79MODULE_AUTHOR("Saito.K & Jeanne <ksaito@interface.co.jp>"); 80MODULE_DESCRIPTION("MTD map driver for MPC-1211 boards. Interface"); 81