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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Thomas Gleixner69f34c92005-11-07 11:15:40 +00002 * $Id: dbox2-flash.c,v 1.14 2005/11/07 11:14:26 gleixner Exp $
Linus Torvalds1da177e2005-04-16 15:20:36 -07003 *
4 * D-Box 2 flash driver
5 */
6
7#include <linux/module.h>
8#include <linux/types.h>
9#include <linux/kernel.h>
10#include <linux/init.h>
11#include <asm/io.h>
12#include <linux/mtd/mtd.h>
13#include <linux/mtd/map.h>
14#include <linux/mtd/partitions.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070015#include <linux/errno.h>
16
17/* partition_info gives details on the logical partitions that the split the
18 * single flash device into. If the size if zero we use up to the end of the
19 * device. */
20static struct mtd_partition partition_info[]= {
21 {
22 .name = "BR bootloader",
Thomas Gleixner69f34c92005-11-07 11:15:40 +000023 .size = 128 * 1024,
24 .offset = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -070025 .mask_flags = MTD_WRITEABLE
26 },
27 {
28 .name = "FLFS (U-Boot)",
Thomas Gleixner69f34c92005-11-07 11:15:40 +000029 .size = 128 * 1024,
30 .offset = MTDPART_OFS_APPEND,
Linus Torvalds1da177e2005-04-16 15:20:36 -070031 .mask_flags = 0
32 },
33 {
Thomas Gleixner69f34c92005-11-07 11:15:40 +000034 .name = "Root (SquashFS)",
35 .size = 7040 * 1024,
36 .offset = MTDPART_OFS_APPEND,
Linus Torvalds1da177e2005-04-16 15:20:36 -070037 .mask_flags = 0
38 },
39 {
40 .name = "var (JFFS2)",
Thomas Gleixner69f34c92005-11-07 11:15:40 +000041 .size = 896 * 1024,
42 .offset = MTDPART_OFS_APPEND,
Linus Torvalds1da177e2005-04-16 15:20:36 -070043 .mask_flags = 0
44 },
45 {
Thomas Gleixner69f34c92005-11-07 11:15:40 +000046 .name = "Flash without bootloader",
47 .size = MTDPART_SIZ_FULL,
48 .offset = 128 * 1024,
Linus Torvalds1da177e2005-04-16 15:20:36 -070049 .mask_flags = 0
50 },
51 {
Thomas Gleixner69f34c92005-11-07 11:15:40 +000052 .name = "Complete Flash",
53 .size = MTDPART_SIZ_FULL,
54 .offset = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -070055 .mask_flags = MTD_WRITEABLE
56 }
57};
58
Tobias Klauser87d10f32006-03-31 02:29:45 -080059#define NUM_PARTITIONS ARRAY_SIZE(partition_info)
Linus Torvalds1da177e2005-04-16 15:20:36 -070060
61#define WINDOW_ADDR 0x10000000
62#define WINDOW_SIZE 0x800000
63
64static struct mtd_info *mymtd;
65
66
67struct map_info dbox2_flash_map = {
68 .name = "D-Box 2 flash memory",
69 .size = WINDOW_SIZE,
70 .bankwidth = 4,
71 .phys = WINDOW_ADDR,
72};
73
74int __init init_dbox2_flash(void)
75{
76 printk(KERN_NOTICE "D-Box 2 flash driver (size->0x%X mem->0x%X)\n", WINDOW_SIZE, WINDOW_ADDR);
77 dbox2_flash_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE);
78
79 if (!dbox2_flash_map.virt) {
80 printk("Failed to ioremap\n");
81 return -EIO;
82 }
83 simple_map_init(&dbox2_flash_map);
84
85 // Probe for dual Intel 28F320 or dual AMD
86 mymtd = do_map_probe("cfi_probe", &dbox2_flash_map);
87 if (!mymtd) {
88 // Probe for single Intel 28F640
89 dbox2_flash_map.bankwidth = 2;
Thomas Gleixner69f34c92005-11-07 11:15:40 +000090
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 mymtd = do_map_probe("cfi_probe", &dbox2_flash_map);
92 }
Thomas Gleixner69f34c92005-11-07 11:15:40 +000093
Linus Torvalds1da177e2005-04-16 15:20:36 -070094 if (mymtd) {
95 mymtd->owner = THIS_MODULE;
96
97 /* Create MTD devices for each partition. */
98 add_mtd_partitions(mymtd, partition_info, NUM_PARTITIONS);
Thomas Gleixner69f34c92005-11-07 11:15:40 +000099
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100 return 0;
101 }
102
103 iounmap((void *)dbox2_flash_map.virt);
104 return -ENXIO;
105}
106
107static void __exit cleanup_dbox2_flash(void)
108{
109 if (mymtd) {
110 del_mtd_partitions(mymtd);
111 map_destroy(mymtd);
112 }
113 if (dbox2_flash_map.virt) {
114 iounmap((void *)dbox2_flash_map.virt);
115 dbox2_flash_map.virt = 0;
116 }
117}
118
119module_init(init_dbox2_flash);
120module_exit(cleanup_dbox2_flash);
121
122
123MODULE_LICENSE("GPL");
David Woodhouse151e7652006-05-14 01:51:54 +0100124MODULE_AUTHOR("Kári Davíðsson <kd@flaga.is>, Bastian Blank <waldi@tuxbox.org>, Alexander Wild <wild@te-elektronik.com>");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125MODULE_DESCRIPTION("MTD map driver for D-Box 2 board");