diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/mtd/maps/cfi_flagadm.c |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/mtd/maps/cfi_flagadm.c')
-rw-r--r-- | drivers/mtd/maps/cfi_flagadm.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/drivers/mtd/maps/cfi_flagadm.c b/drivers/mtd/maps/cfi_flagadm.c new file mode 100644 index 000000000000..f72e4f894b32 --- /dev/null +++ b/drivers/mtd/maps/cfi_flagadm.c | |||
@@ -0,0 +1,139 @@ | |||
1 | /* | ||
2 | * Copyright © 2001 Flaga hf. Medical Devices, Kári Davíđsson <kd@flaga.is> | ||
3 | * | ||
4 | * $Id: cfi_flagadm.c,v 1.14 2004/11/04 13:24:14 gleixner Exp $ | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify it | ||
7 | * under the terms of the GNU General Public License as published by the | ||
8 | * Free Software Foundation; either version 2 of the License, or (at your | ||
9 | * option) any later version. | ||
10 | * | ||
11 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | ||
12 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | ||
13 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN | ||
14 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | ||
15 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | ||
16 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF | ||
17 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON | ||
18 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
19 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | ||
20 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
21 | * | ||
22 | * You should have received a copy of the GNU General Public License along | ||
23 | * with this program; if not, write to the Free Software Foundation, Inc., | ||
24 | * 675 Mass Ave, Cambridge, MA 02139, USA. | ||
25 | */ | ||
26 | |||
27 | #include <linux/module.h> | ||
28 | #include <linux/types.h> | ||
29 | #include <linux/kernel.h> | ||
30 | #include <linux/init.h> | ||
31 | #include <asm/io.h> | ||
32 | #include <linux/mtd/mtd.h> | ||
33 | #include <linux/mtd/map.h> | ||
34 | #include <linux/mtd/partitions.h> | ||
35 | |||
36 | |||
37 | /* We split the flash chip up into four parts. | ||
38 | * 1: bootloader firts 128k (0x00000000 - 0x0001FFFF) size 0x020000 | ||
39 | * 2: kernel 640k (0x00020000 - 0x000BFFFF) size 0x0A0000 | ||
40 | * 3: compressed 1536k root ramdisk (0x000C0000 - 0x0023FFFF) size 0x180000 | ||
41 | * 4: writeable diskpartition (jffs)(0x00240000 - 0x003FFFFF) size 0x1C0000 | ||
42 | */ | ||
43 | |||
44 | #define FLASH_PHYS_ADDR 0x40000000 | ||
45 | #define FLASH_SIZE 0x400000 | ||
46 | |||
47 | #define FLASH_PARTITION0_ADDR 0x00000000 | ||
48 | #define FLASH_PARTITION0_SIZE 0x00020000 | ||
49 | |||
50 | #define FLASH_PARTITION1_ADDR 0x00020000 | ||
51 | #define FLASH_PARTITION1_SIZE 0x000A0000 | ||
52 | |||
53 | #define FLASH_PARTITION2_ADDR 0x000C0000 | ||
54 | #define FLASH_PARTITION2_SIZE 0x00180000 | ||
55 | |||
56 | #define FLASH_PARTITION3_ADDR 0x00240000 | ||
57 | #define FLASH_PARTITION3_SIZE 0x001C0000 | ||
58 | |||
59 | |||
60 | struct map_info flagadm_map = { | ||
61 | .name = "FlagaDM flash device", | ||
62 | .size = FLASH_SIZE, | ||
63 | .bankwidth = 2, | ||
64 | }; | ||
65 | |||
66 | struct mtd_partition flagadm_parts[] = { | ||
67 | { | ||
68 | .name = "Bootloader", | ||
69 | .offset = FLASH_PARTITION0_ADDR, | ||
70 | .size = FLASH_PARTITION0_SIZE | ||
71 | }, | ||
72 | { | ||
73 | .name = "Kernel image", | ||
74 | .offset = FLASH_PARTITION1_ADDR, | ||
75 | .size = FLASH_PARTITION1_SIZE | ||
76 | }, | ||
77 | { | ||
78 | .name = "Initial ramdisk image", | ||
79 | .offset = FLASH_PARTITION2_ADDR, | ||
80 | .size = FLASH_PARTITION2_SIZE | ||
81 | }, | ||
82 | { | ||
83 | .name = "Persistant storage", | ||
84 | .offset = FLASH_PARTITION3_ADDR, | ||
85 | .size = FLASH_PARTITION3_SIZE | ||
86 | } | ||
87 | }; | ||
88 | |||
89 | #define PARTITION_COUNT (sizeof(flagadm_parts)/sizeof(struct mtd_partition)) | ||
90 | |||
91 | static struct mtd_info *mymtd; | ||
92 | |||
93 | int __init init_flagadm(void) | ||
94 | { | ||
95 | printk(KERN_NOTICE "FlagaDM flash device: %x at %x\n", | ||
96 | FLASH_SIZE, FLASH_PHYS_ADDR); | ||
97 | |||
98 | flagadm_map.phys = FLASH_PHYS_ADDR; | ||
99 | flagadm_map.virt = ioremap(FLASH_PHYS_ADDR, | ||
100 | FLASH_SIZE); | ||
101 | |||
102 | if (!flagadm_map.virt) { | ||
103 | printk("Failed to ioremap\n"); | ||
104 | return -EIO; | ||
105 | } | ||
106 | |||
107 | simple_map_init(&flagadm_map); | ||
108 | |||
109 | mymtd = do_map_probe("cfi_probe", &flagadm_map); | ||
110 | if (mymtd) { | ||
111 | mymtd->owner = THIS_MODULE; | ||
112 | add_mtd_partitions(mymtd, flagadm_parts, PARTITION_COUNT); | ||
113 | printk(KERN_NOTICE "FlagaDM flash device initialized\n"); | ||
114 | return 0; | ||
115 | } | ||
116 | |||
117 | iounmap((void *)flagadm_map.virt); | ||
118 | return -ENXIO; | ||
119 | } | ||
120 | |||
121 | static void __exit cleanup_flagadm(void) | ||
122 | { | ||
123 | if (mymtd) { | ||
124 | del_mtd_partitions(mymtd); | ||
125 | map_destroy(mymtd); | ||
126 | } | ||
127 | if (flagadm_map.virt) { | ||
128 | iounmap((void *)flagadm_map.virt); | ||
129 | flagadm_map.virt = 0; | ||
130 | } | ||
131 | } | ||
132 | |||
133 | module_init(init_flagadm); | ||
134 | module_exit(cleanup_flagadm); | ||
135 | |||
136 | |||
137 | MODULE_LICENSE("GPL"); | ||
138 | MODULE_AUTHOR("Kári Davíđsson <kd@flaga.is>"); | ||
139 | MODULE_DESCRIPTION("MTD map driver for Flaga digital module"); | ||