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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/mtd/maps/dbox2-flash.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/dbox2-flash.c')
-rw-r--r--drivers/mtd/maps/dbox2-flash.c126
1 files changed, 126 insertions, 0 deletions
diff --git a/drivers/mtd/maps/dbox2-flash.c b/drivers/mtd/maps/dbox2-flash.c
new file mode 100644
index 000000000000..d850a27a4b59
--- /dev/null
+++ b/drivers/mtd/maps/dbox2-flash.c
@@ -0,0 +1,126 @@
1/*
2 * $Id: dbox2-flash.c,v 1.13 2004/11/04 13:24:14 gleixner Exp $
3 *
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>
15#include <linux/config.h>
16#include <linux/errno.h>
17
18/* partition_info gives details on the logical partitions that the split the
19 * single flash device into. If the size if zero we use up to the end of the
20 * device. */
21static struct mtd_partition partition_info[]= {
22 {
23 .name = "BR bootloader",
24 .size = 128 * 1024,
25 .offset = 0,
26 .mask_flags = MTD_WRITEABLE
27 },
28 {
29 .name = "FLFS (U-Boot)",
30 .size = 128 * 1024,
31 .offset = MTDPART_OFS_APPEND,
32 .mask_flags = 0
33 },
34 {
35 .name = "Root (SquashFS)",
36 .size = 7040 * 1024,
37 .offset = MTDPART_OFS_APPEND,
38 .mask_flags = 0
39 },
40 {
41 .name = "var (JFFS2)",
42 .size = 896 * 1024,
43 .offset = MTDPART_OFS_APPEND,
44 .mask_flags = 0
45 },
46 {
47 .name = "Flash without bootloader",
48 .size = MTDPART_SIZ_FULL,
49 .offset = 128 * 1024,
50 .mask_flags = 0
51 },
52 {
53 .name = "Complete Flash",
54 .size = MTDPART_SIZ_FULL,
55 .offset = 0,
56 .mask_flags = MTD_WRITEABLE
57 }
58};
59
60#define NUM_PARTITIONS (sizeof(partition_info) / sizeof(partition_info[0]))
61
62#define WINDOW_ADDR 0x10000000
63#define WINDOW_SIZE 0x800000
64
65static struct mtd_info *mymtd;
66
67
68struct map_info dbox2_flash_map = {
69 .name = "D-Box 2 flash memory",
70 .size = WINDOW_SIZE,
71 .bankwidth = 4,
72 .phys = WINDOW_ADDR,
73};
74
75int __init init_dbox2_flash(void)
76{
77 printk(KERN_NOTICE "D-Box 2 flash driver (size->0x%X mem->0x%X)\n", WINDOW_SIZE, WINDOW_ADDR);
78 dbox2_flash_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE);
79
80 if (!dbox2_flash_map.virt) {
81 printk("Failed to ioremap\n");
82 return -EIO;
83 }
84 simple_map_init(&dbox2_flash_map);
85
86 // Probe for dual Intel 28F320 or dual AMD
87 mymtd = do_map_probe("cfi_probe", &dbox2_flash_map);
88 if (!mymtd) {
89 // Probe for single Intel 28F640
90 dbox2_flash_map.bankwidth = 2;
91
92 mymtd = do_map_probe("cfi_probe", &dbox2_flash_map);
93 }
94
95 if (mymtd) {
96 mymtd->owner = THIS_MODULE;
97
98 /* Create MTD devices for each partition. */
99 add_mtd_partitions(mymtd, partition_info, NUM_PARTITIONS);
100
101 return 0;
102 }
103
104 iounmap((void *)dbox2_flash_map.virt);
105 return -ENXIO;
106}
107
108static void __exit cleanup_dbox2_flash(void)
109{
110 if (mymtd) {
111 del_mtd_partitions(mymtd);
112 map_destroy(mymtd);
113 }
114 if (dbox2_flash_map.virt) {
115 iounmap((void *)dbox2_flash_map.virt);
116 dbox2_flash_map.virt = 0;
117 }
118}
119
120module_init(init_dbox2_flash);
121module_exit(cleanup_dbox2_flash);
122
123
124MODULE_LICENSE("GPL");
125MODULE_AUTHOR("Kári Davíđsson <kd@flaga.is>, Bastian Blank <waldi@tuxbox.org>, Alexander Wild <wild@te-elektronik.com>");
126MODULE_DESCRIPTION("MTD map driver for D-Box 2 board");