drivers/mtd/maps/pnc2000.c

   1 /*
   2  *      pnc2000.c - mapper for Photron PNC-2000 board.
   3  *
   4  * Copyright (C) 2000 Crossnet Co. <info@crossnet.co.jp>
   5  *
   6  * This code is GPL
   7  *
   8  * $Id: pnc2000.c,v 1.18 2005/11/07 11:14:28 gleixner Exp $
   9  */
  10
  11 #include <linux/module.h>
  12 #include <linux/types.h>
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15
  16 #include <linux/mtd/mtd.h>
  17 #include <linux/mtd/map.h>
  18 #include <linux/mtd/partitions.h>
  19
  20
  21 #define WINDOW_ADDR 0xbf000000
  22 #define WINDOW_SIZE 0x00400000
  23
  24 /*
  25  * MAP DRIVER STUFF
  26  */
  27
  28
  29 static struct map_info pnc_map = {
  30         .name = "PNC-2000",
  31         .size = WINDOW_SIZE,
  32         .bankwidth = 4,
  33         .phys = 0xFFFFFFFF,
  34         .virt = (void __iomem *)WINDOW_ADDR,
  35 };
  36
  37
  38 /*
  39  * MTD 'PARTITIONING' STUFF
  40  */
  41 static struct mtd_partition pnc_partitions[3] = {
  42         {
  43                 .name = "PNC-2000 boot firmware",
  44                 .size = 0x20000,
  45                 .offset = 0
  46         },
  47         {
  48                 .name = "PNC-2000 kernel",
  49                 .size = 0x1a0000,
  50                 .offset = 0x20000
  51         },
  52         {
  53                 .name = "PNC-2000 filesystem",
  54                 .size = 0x240000,
  55                 .offset = 0x1c0000
  56         }
  57 };
  58
  59 /*
  60  * This is the master MTD device for which all the others are just
  61  * auto-relocating aliases.
  62  */
  63 static struct mtd_info *mymtd;
  64
  65 static int __init init_pnc2000(void)
  66 {
  67         printk(KERN_NOTICE "Photron PNC-2000 flash mapping: %x at %x\n", WINDOW_SIZE, WINDOW_ADDR);
  68
  69         simple_map_init(&pnc_map);
  70
  71         mymtd = do_map_probe("cfi_probe", &pnc_map);
  72         if (mymtd) {
  73                 mymtd->owner = THIS_MODULE;
  74                 return add_mtd_partitions(mymtd, pnc_partitions, 3);
  75         }
  76
  77         return -ENXIO;
  78 }
  79
  80 static void __exit cleanup_pnc2000(void)
  81 {
  82         if (mymtd) {
  83                 del_mtd_partitions(mymtd);
  84                 map_destroy(mymtd);
  85         }
  86 }
  87
  88 module_init(init_pnc2000);
  89 module_exit(cleanup_pnc2000);
  90
  91 MODULE_LICENSE("GPL");
  92 MODULE_AUTHOR("Crossnet Co. <info@crossnet.co.jp>");
  93 MODULE_DESCRIPTION("MTD map driver for Photron PNC-2000 board");