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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * 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 Torvalds1da177e2005-04-16 15:20:36 -070013#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. */
18static struct mtd_partition partition_info[]= {
19 {
20 .name = "BR bootloader",
Thomas Gleixner69f34c92005-11-07 11:15:40 +000021 .size = 128 * 1024,
22 .offset = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -070023 .mask_flags = MTD_WRITEABLE
24 },
25 {
26 .name = "FLFS (U-Boot)",
Thomas Gleixner69f34c92005-11-07 11:15:40 +000027 .size = 128 * 1024,
28 .offset = MTDPART_OFS_APPEND,
Linus Torvalds1da177e2005-04-16 15:20:36 -070029 .mask_flags = 0
30 },
31 {
Thomas Gleixner69f34c92005-11-07 11:15:40 +000032 .name = "Root (SquashFS)",
33 .size = 7040 * 1024,
34 .offset = MTDPART_OFS_APPEND,
Linus Torvalds1da177e2005-04-16 15:20:36 -070035 .mask_flags = 0
36 },
37 {
38 .name = "var (JFFS2)",
Thomas Gleixner69f34c92005-11-07 11:15:40 +000039 .size = 896 * 1024,
40 .offset = MTDPART_OFS_APPEND,
Linus Torvalds1da177e2005-04-16 15:20:36 -070041 .mask_flags = 0
42 },
43 {
Thomas Gleixner69f34c92005-11-07 11:15:40 +000044 .name = "Flash without bootloader",
45 .size = MTDPART_SIZ_FULL,
46 .offset = 128 * 1024,
Linus Torvalds1da177e2005-04-16 15:20:36 -070047 .mask_flags = 0
48 },
49 {
Thomas Gleixner69f34c92005-11-07 11:15:40 +000050 .name = "Complete Flash",
51 .size = MTDPART_SIZ_FULL,
52 .offset = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -070053 .mask_flags = MTD_WRITEABLE
54 }
55};
56
Tobias Klauser87d10f32006-03-31 02:29:45 -080057#define NUM_PARTITIONS ARRAY_SIZE(partition_info)
Linus Torvalds1da177e2005-04-16 15:20:36 -070058
59#define WINDOW_ADDR 0x10000000
60#define WINDOW_SIZE 0x800000
61
62static struct mtd_info *mymtd;
63
64
65struct 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 Vorobievbaa0f0f2008-11-25 02:54:55 +020072static int __init init_dbox2_flash(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -070073{
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 Gleixner69f34c92005-11-07 11:15:40 +000088
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 mymtd = do_map_probe("cfi_probe", &dbox2_flash_map);
90 }
Thomas Gleixner69f34c92005-11-07 11:15:40 +000091
Linus Torvalds1da177e2005-04-16 15:20:36 -070092 if (mymtd) {
93 mymtd->owner = THIS_MODULE;
94
95 /* Create MTD devices for each partition. */
Jamie Ilesee0e87b2011-05-23 10:23:40 +010096 mtd_device_register(mymtd, partition_info, NUM_PARTITIONS);
Thomas Gleixner69f34c92005-11-07 11:15:40 +000097
Linus Torvalds1da177e2005-04-16 15:20:36 -070098 return 0;
99 }
100
101 iounmap((void *)dbox2_flash_map.virt);
102 return -ENXIO;
103}
104
105static void __exit cleanup_dbox2_flash(void)
106{
107 if (mymtd) {
Jamie Ilesee0e87b2011-05-23 10:23:40 +0100108 mtd_device_unregister(mymtd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109 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
117module_init(init_dbox2_flash);
118module_exit(cleanup_dbox2_flash);
119
120
121MODULE_LICENSE("GPL");
David Woodhouse151e7652006-05-14 01:51:54 +0100122MODULE_AUTHOR("Kári Davíðsson <kd@flaga.is>, Bastian Blank <waldi@tuxbox.org>, Alexander Wild <wild@te-elektronik.com>");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123MODULE_DESCRIPTION("MTD map driver for D-Box 2 board");