ia64/linux-2.6.18-xen.hg

view drivers/mtd/maps/beech-mtd.c @ 0:831230e53067

Import 2.6.18 from kernel.org tarball.
author Ian Campbell <ian.campbell@xensource.com>
date Wed Apr 11 14:15:44 2007 +0100 (2007-04-11)
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1 /*
2 * $Id: beech-mtd.c,v 1.11 2005/11/07 11:14:26 gleixner Exp $
3 *
4 * drivers/mtd/maps/beech-mtd.c MTD mappings and partition tables for
5 * IBM 405LP Beech boards.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 * Copyright (C) 2002, International Business Machines Corporation
22 * All Rights Reserved.
23 *
24 * Bishop Brock
25 * IBM Research, Austin Center for Low-Power Computing
26 * bcbrock@us.ibm.com
27 * March 2002
28 *
29 */
31 #include <linux/kernel.h>
32 #include <linux/module.h>
33 #include <linux/types.h>
34 #include <linux/init.h>
36 #include <linux/mtd/mtd.h>
37 #include <linux/mtd/map.h>
38 #include <linux/mtd/partitions.h>
40 #include <asm/io.h>
41 #include <asm/ibm4xx.h>
43 #define NAME "Beech Linux Flash"
44 #define PADDR BEECH_BIGFLASH_PADDR
45 #define SIZE BEECH_BIGFLASH_SIZE
46 #define BUSWIDTH 1
48 /* Flash memories on these boards are memory resources, accessed big-endian. */
51 static struct map_info beech_mtd_map = {
52 .name = NAME,
53 .size = SIZE,
54 .bankwidth = BUSWIDTH,
55 .phys = PADDR
56 };
58 static struct mtd_info *beech_mtd;
60 static struct mtd_partition beech_partitions[2] = {
61 {
62 .name = "Linux Kernel",
63 .size = BEECH_KERNEL_SIZE,
64 .offset = BEECH_KERNEL_OFFSET
65 }, {
66 .name = "Free Area",
67 .size = BEECH_FREE_AREA_SIZE,
68 .offset = BEECH_FREE_AREA_OFFSET
69 }
70 };
72 static int __init
73 init_beech_mtd(void)
74 {
75 printk("%s: 0x%08x at 0x%08x\n", NAME, SIZE, PADDR);
77 beech_mtd_map.virt = ioremap(PADDR, SIZE);
79 if (!beech_mtd_map.virt) {
80 printk("%s: failed to ioremap 0x%x\n", NAME, PADDR);
81 return -EIO;
82 }
84 simple_map_init(&beech_mtd_map);
86 printk("%s: probing %d-bit flash bus\n", NAME, BUSWIDTH * 8);
87 beech_mtd = do_map_probe("cfi_probe", &beech_mtd_map);
89 if (!beech_mtd)
90 return -ENXIO;
92 beech_mtd->owner = THIS_MODULE;
94 return add_mtd_partitions(beech_mtd, beech_partitions, 2);
95 }
97 static void __exit
98 cleanup_beech_mtd(void)
99 {
100 if (beech_mtd) {
101 del_mtd_partitions(beech_mtd);
102 map_destroy(beech_mtd);
103 iounmap((void *) beech_mtd_map.virt);
104 }
105 }
107 module_init(init_beech_mtd);
108 module_exit(cleanup_beech_mtd);
110 MODULE_LICENSE("GPL");
111 MODULE_AUTHOR("Bishop Brock <bcbrock@us.ibm.com>");
112 MODULE_DESCRIPTION("MTD map and partitions for IBM 405LP Beech boards");