Commit | Line | Data |
---|---|---|
1da177e4 LT |
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"); |