| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * $Id: iq80310.c,v 1.20 2004/11/04 13:24:15 gleixner Exp $ |
| 3 | * |
| 4 | * Mapping for the Intel XScale IQ80310 evaluation board |
| 5 | * |
| 6 | * Author: Nicolas Pitre |
| 7 | * Copyright: (C) 2001 MontaVista Software Inc. |
| 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/kernel.h> |
| 17 | #include <linux/init.h> |
| 18 | #include <linux/slab.h> |
| 19 | #include <asm/io.h> |
| 20 | #include <linux/mtd/mtd.h> |
| 21 | #include <linux/mtd/map.h> |
| 22 | #include <linux/mtd/partitions.h> |
| 23 | |
| 24 | |
| 25 | #define WINDOW_ADDR 0 |
| 26 | #define WINDOW_SIZE 8*1024*1024 |
| 27 | #define BUSWIDTH 1 |
| 28 | |
| 29 | static struct mtd_info *mymtd; |
| 30 | |
| 31 | static struct map_info iq80310_map = { |
| 32 | .name = "IQ80310 flash", |
| 33 | .size = WINDOW_SIZE, |
| 34 | .bankwidth = BUSWIDTH, |
| 35 | .phys = WINDOW_ADDR |
| 36 | }; |
| 37 | |
| 38 | static struct mtd_partition iq80310_partitions[4] = { |
| 39 | { |
| 40 | .name = "Firmware", |
| 41 | .size = 0x00080000, |
| 42 | .offset = 0, |
| 43 | .mask_flags = MTD_WRITEABLE /* force read-only */ |
| 44 | },{ |
| 45 | .name = "Kernel", |
| 46 | .size = 0x000a0000, |
| 47 | .offset = 0x00080000, |
| 48 | },{ |
| 49 | .name = "Filesystem", |
| 50 | .size = 0x00600000, |
| 51 | .offset = 0x00120000 |
| 52 | },{ |
| 53 | .name = "RedBoot", |
| 54 | .size = 0x000e0000, |
| 55 | .offset = 0x00720000, |
| 56 | .mask_flags = MTD_WRITEABLE |
| 57 | } |
| 58 | }; |
| 59 | |
| 60 | static struct mtd_info *mymtd; |
| 61 | static struct mtd_partition *parsed_parts; |
| 62 | static const char *probes[] = { "RedBoot", "cmdlinepart", NULL }; |
| 63 | |
| 64 | static int __init init_iq80310(void) |
| 65 | { |
| 66 | struct mtd_partition *parts; |
| 67 | int nb_parts = 0; |
| 68 | int parsed_nr_parts = 0; |
| 69 | int ret; |
| 70 | |
| 71 | iq80310_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE); |
| 72 | if (!iq80310_map.virt) { |
| 73 | printk("Failed to ioremap\n"); |
| 74 | return -EIO; |
| 75 | } |
| 76 | simple_map_init(&iq80310_map); |
| 77 | |
| 78 | mymtd = do_map_probe("cfi_probe", &iq80310_map); |
| 79 | if (!mymtd) { |
| 80 | iounmap((void *)iq80310_map.virt); |
| 81 | return -ENXIO; |
| 82 | } |
| 83 | mymtd->owner = THIS_MODULE; |
| 84 | |
| 85 | ret = parse_mtd_partitions(mymtd, probes, &parsed_parts, 0); |
| 86 | |
| 87 | if (ret > 0) |
| 88 | parsed_nr_parts = ret; |
| 89 | |
| 90 | if (parsed_nr_parts > 0) { |
| 91 | parts = parsed_parts; |
| 92 | nb_parts = parsed_nr_parts; |
| 93 | } else { |
| 94 | parts = iq80310_partitions; |
| 95 | nb_parts = ARRAY_SIZE(iq80310_partitions); |
| 96 | } |
| 97 | add_mtd_partitions(mymtd, parts, nb_parts); |
| 98 | return 0; |
| 99 | } |
| 100 | |
| 101 | static void __exit cleanup_iq80310(void) |
| 102 | { |
| 103 | if (mymtd) { |
| 104 | del_mtd_partitions(mymtd); |
| 105 | map_destroy(mymtd); |
| 106 | if (parsed_parts) |
| 107 | kfree(parsed_parts); |
| 108 | } |
| 109 | if (iq80310_map.virt) |
| 110 | iounmap((void *)iq80310_map.virt); |
| 111 | } |
| 112 | |
| 113 | module_init(init_iq80310); |
| 114 | module_exit(cleanup_iq80310); |
| 115 | |
| 116 | |
| 117 | MODULE_LICENSE("GPL"); |
| 118 | MODULE_AUTHOR("Nicolas Pitre <nico@cam.org>"); |
| 119 | MODULE_DESCRIPTION("MTD map driver for Intel XScale IQ80310 evaluation board"); |