| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Flash device on Lasat 100 and 200 boards |
| 3 | * |
| 4 | * (C) 2002 Brian Murphy <brian@murphy.dk> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License version |
| 8 | * 2 as published by the Free Software Foundation. |
| 9 | * |
| 10 | * $Id: lasat.c,v 1.9 2004/11/04 13:24:15 gleixner Exp $ |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/types.h> |
| 16 | #include <linux/kernel.h> |
| 17 | #include <linux/init.h> |
| 18 | #include <asm/io.h> |
| 19 | #include <linux/mtd/mtd.h> |
| 20 | #include <linux/mtd/map.h> |
| 21 | #include <linux/mtd/partitions.h> |
| 22 | #include <linux/config.h> |
| 23 | #include <asm/lasat/lasat.h> |
| 24 | |
| 25 | static struct mtd_info *lasat_mtd; |
| 26 | |
| 27 | static struct mtd_partition partition_info[LASAT_MTD_LAST]; |
| 28 | static char *lasat_mtd_partnames[] = {"Bootloader", "Service", "Normal", "Filesystem", "Config"}; |
| 29 | |
| 30 | static void lasat_set_vpp(struct map_info *map, int vpp) |
| 31 | { |
| 32 | if (vpp) |
| 33 | *lasat_misc->flash_wp_reg |= 1 << lasat_misc->flash_wp_bit; |
| 34 | else |
| 35 | *lasat_misc->flash_wp_reg &= ~(1 << lasat_misc->flash_wp_bit); |
| 36 | } |
| 37 | |
| 38 | static struct map_info lasat_map = { |
| 39 | .name = "LASAT flash", |
| 40 | .bankwidth = 4, |
| 41 | .set_vpp = lasat_set_vpp |
| 42 | }; |
| 43 | |
| 44 | static int __init init_lasat(void) |
| 45 | { |
| 46 | int i; |
| 47 | /* since we use AMD chips and set_vpp is not implimented |
| 48 | * for these (yet) we still have to permanently enable flash write */ |
| 49 | printk(KERN_NOTICE "Unprotecting flash\n"); |
| 50 | ENABLE_VPP((&lasat_map)); |
| 51 | |
| 52 | lasat_map.phys = lasat_flash_partition_start(LASAT_MTD_BOOTLOADER); |
| 53 | lasat_map.virt = ioremap_nocache( |
| 54 | lasat_map.phys, lasat_board_info.li_flash_size); |
| 55 | lasat_map.size = lasat_board_info.li_flash_size; |
| 56 | |
| 57 | simple_map_init(&lasat_map); |
| 58 | |
| 59 | for (i=0; i < LASAT_MTD_LAST; i++) |
| 60 | partition_info[i].name = lasat_mtd_partnames[i]; |
| 61 | |
| 62 | lasat_mtd = do_map_probe("cfi_probe", &lasat_map); |
| 63 | |
| 64 | if (!lasat_mtd) |
| 65 | lasat_mtd = do_map_probe("jedec_probe", &lasat_map); |
| 66 | |
| 67 | if (lasat_mtd) { |
| 68 | u32 size, offset = 0; |
| 69 | |
| 70 | lasat_mtd->owner = THIS_MODULE; |
| 71 | |
| 72 | for (i=0; i < LASAT_MTD_LAST; i++) { |
| 73 | size = lasat_flash_partition_size(i); |
| 74 | partition_info[i].size = size; |
| 75 | partition_info[i].offset = offset; |
| 76 | offset += size; |
| 77 | } |
| 78 | |
| 79 | add_mtd_partitions( lasat_mtd, partition_info, LASAT_MTD_LAST ); |
| 80 | return 0; |
| 81 | } |
| 82 | |
| 83 | return -ENXIO; |
| 84 | } |
| 85 | |
| 86 | static void __exit cleanup_lasat(void) |
| 87 | { |
| 88 | if (lasat_mtd) { |
| 89 | del_mtd_partitions(lasat_mtd); |
| 90 | map_destroy(lasat_mtd); |
| 91 | } |
| 92 | if (lasat_map.virt) { |
| 93 | lasat_map.virt = 0; |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | module_init(init_lasat); |
| 98 | module_exit(cleanup_lasat); |
| 99 | |
| 100 | MODULE_LICENSE("GPL"); |
| 101 | MODULE_AUTHOR("Brian Murphy <brian@murphy.dk>"); |
| 102 | MODULE_DESCRIPTION("Lasat Safepipe/Masquerade MTD map driver"); |