Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * D-Box 2 flash driver |
| 3 | */ |
| 4 | |
| 5 | #include <linux/module.h> |
| 6 | #include <linux/types.h> |
| 7 | #include <linux/kernel.h> |
| 8 | #include <linux/init.h> |
| 9 | #include <asm/io.h> |
| 10 | #include <linux/mtd/mtd.h> |
| 11 | #include <linux/mtd/map.h> |
| 12 | #include <linux/mtd/partitions.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include <linux/errno.h> |
| 14 | |
| 15 | /* partition_info gives details on the logical partitions that the split the |
| 16 | * single flash device into. If the size if zero we use up to the end of the |
| 17 | * device. */ |
| 18 | static struct mtd_partition partition_info[]= { |
| 19 | { |
| 20 | .name = "BR bootloader", |
Thomas Gleixner | 69f34c9 | 2005-11-07 11:15:40 +0000 | [diff] [blame] | 21 | .size = 128 * 1024, |
| 22 | .offset = 0, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | .mask_flags = MTD_WRITEABLE |
| 24 | }, |
| 25 | { |
| 26 | .name = "FLFS (U-Boot)", |
Thomas Gleixner | 69f34c9 | 2005-11-07 11:15:40 +0000 | [diff] [blame] | 27 | .size = 128 * 1024, |
| 28 | .offset = MTDPART_OFS_APPEND, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | .mask_flags = 0 |
| 30 | }, |
| 31 | { |
Thomas Gleixner | 69f34c9 | 2005-11-07 11:15:40 +0000 | [diff] [blame] | 32 | .name = "Root (SquashFS)", |
| 33 | .size = 7040 * 1024, |
| 34 | .offset = MTDPART_OFS_APPEND, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | .mask_flags = 0 |
| 36 | }, |
| 37 | { |
| 38 | .name = "var (JFFS2)", |
Thomas Gleixner | 69f34c9 | 2005-11-07 11:15:40 +0000 | [diff] [blame] | 39 | .size = 896 * 1024, |
| 40 | .offset = MTDPART_OFS_APPEND, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | .mask_flags = 0 |
| 42 | }, |
| 43 | { |
Thomas Gleixner | 69f34c9 | 2005-11-07 11:15:40 +0000 | [diff] [blame] | 44 | .name = "Flash without bootloader", |
| 45 | .size = MTDPART_SIZ_FULL, |
| 46 | .offset = 128 * 1024, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | .mask_flags = 0 |
| 48 | }, |
| 49 | { |
Thomas Gleixner | 69f34c9 | 2005-11-07 11:15:40 +0000 | [diff] [blame] | 50 | .name = "Complete Flash", |
| 51 | .size = MTDPART_SIZ_FULL, |
| 52 | .offset = 0, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | .mask_flags = MTD_WRITEABLE |
| 54 | } |
| 55 | }; |
| 56 | |
Tobias Klauser | 87d10f3 | 2006-03-31 02:29:45 -0800 | [diff] [blame] | 57 | #define NUM_PARTITIONS ARRAY_SIZE(partition_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
| 59 | #define WINDOW_ADDR 0x10000000 |
| 60 | #define WINDOW_SIZE 0x800000 |
| 61 | |
| 62 | static struct mtd_info *mymtd; |
| 63 | |
| 64 | |
| 65 | struct map_info dbox2_flash_map = { |
| 66 | .name = "D-Box 2 flash memory", |
| 67 | .size = WINDOW_SIZE, |
| 68 | .bankwidth = 4, |
| 69 | .phys = WINDOW_ADDR, |
| 70 | }; |
| 71 | |
Dmitri Vorobiev | baa0f0f | 2008-11-25 02:54:55 +0200 | [diff] [blame] | 72 | static int __init init_dbox2_flash(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | { |
| 74 | printk(KERN_NOTICE "D-Box 2 flash driver (size->0x%X mem->0x%X)\n", WINDOW_SIZE, WINDOW_ADDR); |
| 75 | dbox2_flash_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE); |
| 76 | |
| 77 | if (!dbox2_flash_map.virt) { |
| 78 | printk("Failed to ioremap\n"); |
| 79 | return -EIO; |
| 80 | } |
| 81 | simple_map_init(&dbox2_flash_map); |
| 82 | |
| 83 | // Probe for dual Intel 28F320 or dual AMD |
| 84 | mymtd = do_map_probe("cfi_probe", &dbox2_flash_map); |
| 85 | if (!mymtd) { |
| 86 | // Probe for single Intel 28F640 |
| 87 | dbox2_flash_map.bankwidth = 2; |
Thomas Gleixner | 69f34c9 | 2005-11-07 11:15:40 +0000 | [diff] [blame] | 88 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | mymtd = do_map_probe("cfi_probe", &dbox2_flash_map); |
| 90 | } |
Thomas Gleixner | 69f34c9 | 2005-11-07 11:15:40 +0000 | [diff] [blame] | 91 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | if (mymtd) { |
| 93 | mymtd->owner = THIS_MODULE; |
| 94 | |
| 95 | /* Create MTD devices for each partition. */ |
Jamie Iles | ee0e87b | 2011-05-23 10:23:40 +0100 | [diff] [blame] | 96 | mtd_device_register(mymtd, partition_info, NUM_PARTITIONS); |
Thomas Gleixner | 69f34c9 | 2005-11-07 11:15:40 +0000 | [diff] [blame] | 97 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | return 0; |
| 99 | } |
| 100 | |
| 101 | iounmap((void *)dbox2_flash_map.virt); |
| 102 | return -ENXIO; |
| 103 | } |
| 104 | |
| 105 | static void __exit cleanup_dbox2_flash(void) |
| 106 | { |
| 107 | if (mymtd) { |
Jamie Iles | ee0e87b | 2011-05-23 10:23:40 +0100 | [diff] [blame] | 108 | mtd_device_unregister(mymtd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | map_destroy(mymtd); |
| 110 | } |
| 111 | if (dbox2_flash_map.virt) { |
| 112 | iounmap((void *)dbox2_flash_map.virt); |
| 113 | dbox2_flash_map.virt = 0; |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | module_init(init_dbox2_flash); |
| 118 | module_exit(cleanup_dbox2_flash); |
| 119 | |
| 120 | |
| 121 | MODULE_LICENSE("GPL"); |
David Woodhouse | 151e765 | 2006-05-14 01:51:54 +0100 | [diff] [blame] | 122 | MODULE_AUTHOR("Kári Davíðsson <kd@flaga.is>, Bastian Blank <waldi@tuxbox.org>, Alexander Wild <wild@te-elektronik.com>"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | MODULE_DESCRIPTION("MTD map driver for D-Box 2 board"); |