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9fc51a37 ML |
1 | /* |
2 | * Copyright © 2009 - Maxim Levitsky | |
3 | * Common routines & support for xD format | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License version 2 as | |
7 | * published by the Free Software Foundation. | |
8 | */ | |
9 | #include <linux/kernel.h> | |
10 | #include <linux/mtd/nand.h> | |
a0e5cc58 | 11 | #include <linux/module.h> |
9fc51a37 ML |
12 | #include "sm_common.h" |
13 | ||
14 | static struct nand_ecclayout nand_oob_sm = { | |
15 | .eccbytes = 6, | |
16 | .eccpos = {8, 9, 10, 13, 14, 15}, | |
17 | .oobfree = { | |
18 | {.offset = 0 , .length = 4}, /* reserved */ | |
19 | {.offset = 6 , .length = 2}, /* LBA1 */ | |
20 | {.offset = 11, .length = 2} /* LBA2 */ | |
21 | } | |
22 | }; | |
23 | ||
24 | /* NOTE: This layout is is not compatabable with SmartMedia, */ | |
25 | /* because the 256 byte devices have page depenent oob layout */ | |
26 | /* However it does preserve the bad block markers */ | |
27 | /* If you use smftl, it will bypass this and work correctly */ | |
28 | /* If you not, then you break SmartMedia compliance anyway */ | |
29 | ||
30 | static struct nand_ecclayout nand_oob_sm_small = { | |
31 | .eccbytes = 3, | |
32 | .eccpos = {0, 1, 2}, | |
33 | .oobfree = { | |
34 | {.offset = 3 , .length = 2}, /* reserved */ | |
35 | {.offset = 6 , .length = 2}, /* LBA1 */ | |
36 | } | |
37 | }; | |
38 | ||
39 | ||
40 | static int sm_block_markbad(struct mtd_info *mtd, loff_t ofs) | |
41 | { | |
42 | struct mtd_oob_ops ops; | |
43 | struct sm_oob oob; | |
44 | int ret, error = 0; | |
45 | ||
46 | memset(&oob, -1, SM_OOB_SIZE); | |
47 | oob.block_status = 0x0F; | |
48 | ||
49 | /* As long as this function is called on erase block boundaries | |
50 | it will work correctly for 256 byte nand */ | |
0612b9dd | 51 | ops.mode = MTD_OPS_PLACE_OOB; |
9fc51a37 ML |
52 | ops.ooboffs = 0; |
53 | ops.ooblen = mtd->oobsize; | |
54 | ops.oobbuf = (void *)&oob; | |
55 | ops.datbuf = NULL; | |
56 | ||
57 | ||
a2cc5ba0 | 58 | ret = mtd_write_oob(mtd, ofs, &ops); |
9fc51a37 ML |
59 | if (ret < 0 || ops.oobretlen != SM_OOB_SIZE) { |
60 | printk(KERN_NOTICE | |
61 | "sm_common: can't mark sector at %i as bad\n", | |
62 | (int)ofs); | |
63 | error = -EIO; | |
64 | } else | |
65 | mtd->ecc_stats.badblocks++; | |
66 | ||
67 | return error; | |
68 | } | |
69 | ||
70 | ||
2764fb42 | 71 | static struct nand_flash_dev nand_smartmedia_flash_ids[] = { |
2764fb42 DW |
72 | {"SmartMedia 1MiB 5V", 0x6e, 256, 1, 0x1000, 0}, |
73 | {"SmartMedia 1MiB 3,3V", 0xe8, 256, 1, 0x1000, 0}, | |
74 | {"SmartMedia 1MiB 3,3V", 0xec, 256, 1, 0x1000, 0}, | |
75 | {"SmartMedia 2MiB 3,3V", 0xea, 256, 2, 0x1000, 0}, | |
76 | {"SmartMedia 2MiB 5V", 0x64, 256, 2, 0x1000, 0}, | |
77 | {"SmartMedia 2MiB 3,3V ROM", 0x5d, 512, 2, 0x2000, NAND_ROM}, | |
78 | {"SmartMedia 4MiB 3,3V", 0xe3, 512, 4, 0x2000, 0}, | |
79 | {"SmartMedia 4MiB 3,3/5V", 0xe5, 512, 4, 0x2000, 0}, | |
80 | {"SmartMedia 4MiB 5V", 0x6b, 512, 4, 0x2000, 0}, | |
81 | {"SmartMedia 4MiB 3,3V ROM", 0xd5, 512, 4, 0x2000, NAND_ROM}, | |
82 | {"SmartMedia 8MiB 3,3V", 0xe6, 512, 8, 0x2000, 0}, | |
83 | {"SmartMedia 8MiB 3,3V ROM", 0xd6, 512, 8, 0x2000, NAND_ROM}, | |
c3611570 | 84 | {"SmartMedia 16MiB 3,3V", 0x73, 512, 16, 0x4000, 0}, |
2764fb42 | 85 | {"SmartMedia 16MiB 3,3V ROM", 0x57, 512, 16, 0x4000, NAND_ROM}, |
c3611570 | 86 | {"SmartMedia 32MiB 3,3V", 0x75, 512, 32, 0x4000, 0}, |
2764fb42 | 87 | {"SmartMedia 32MiB 3,3V ROM", 0x58, 512, 32, 0x4000, NAND_ROM}, |
c3611570 | 88 | {"SmartMedia 64MiB 3,3V", 0x76, 512, 64, 0x4000, 0}, |
2764fb42 | 89 | {"SmartMedia 64MiB 3,3V ROM", 0xd9, 512, 64, 0x4000, NAND_ROM}, |
c3611570 | 90 | {"SmartMedia 128MiB 3,3V", 0x79, 512, 128, 0x4000, 0}, |
2764fb42 | 91 | {"SmartMedia 128MiB 3,3V ROM", 0xda, 512, 128, 0x4000, NAND_ROM}, |
c3611570 | 92 | {"SmartMedia 256MiB 3,3V", 0x71, 512, 256, 0x4000 }, |
2764fb42 | 93 | {"SmartMedia 256MiB 3,3V ROM", 0x5b, 512, 256, 0x4000, NAND_ROM}, |
c3611570 ML |
94 | {NULL,} |
95 | }; | |
2764fb42 | 96 | |
c3611570 ML |
97 | static struct nand_flash_dev nand_xd_flash_ids[] = { |
98 | ||
99 | {"xD 16MiB 3,3V", 0x73, 512, 16, 0x4000, 0}, | |
100 | {"xD 32MiB 3,3V", 0x75, 512, 32, 0x4000, 0}, | |
101 | {"xD 64MiB 3,3V", 0x76, 512, 64, 0x4000, 0}, | |
102 | {"xD 128MiB 3,3V", 0x79, 512, 128, 0x4000, 0}, | |
1826dbcc BN |
103 | {"xD 256MiB 3,3V", 0x71, 512, 256, 0x4000, NAND_BROKEN_XD}, |
104 | {"xD 512MiB 3,3V", 0xdc, 512, 512, 0x4000, NAND_BROKEN_XD}, | |
105 | {"xD 1GiB 3,3V", 0xd3, 512, 1024, 0x4000, NAND_BROKEN_XD}, | |
106 | {"xD 2GiB 3,3V", 0xd5, 512, 2048, 0x4000, NAND_BROKEN_XD}, | |
2764fb42 DW |
107 | {NULL,} |
108 | }; | |
109 | ||
c3611570 | 110 | int sm_register_device(struct mtd_info *mtd, int smartmedia) |
9fc51a37 | 111 | { |
ece0ac98 | 112 | struct nand_chip *chip = mtd->priv; |
9fc51a37 ML |
113 | int ret; |
114 | ||
2764fb42 | 115 | chip->options |= NAND_SKIP_BBTSCAN; |
9fc51a37 ML |
116 | |
117 | /* Scan for card properties */ | |
c3611570 ML |
118 | ret = nand_scan_ident(mtd, 1, smartmedia ? |
119 | nand_smartmedia_flash_ids : nand_xd_flash_ids); | |
9fc51a37 ML |
120 | |
121 | if (ret) | |
122 | return ret; | |
123 | ||
25985edc | 124 | /* Bad block marker position */ |
9fc51a37 ML |
125 | chip->badblockpos = 0x05; |
126 | chip->badblockbits = 7; | |
127 | chip->block_markbad = sm_block_markbad; | |
128 | ||
129 | /* ECC layout */ | |
130 | if (mtd->writesize == SM_SECTOR_SIZE) | |
131 | chip->ecc.layout = &nand_oob_sm; | |
132 | else if (mtd->writesize == SM_SMALL_PAGE) | |
133 | chip->ecc.layout = &nand_oob_sm_small; | |
134 | else | |
135 | return -ENODEV; | |
136 | ||
137 | ret = nand_scan_tail(mtd); | |
138 | ||
139 | if (ret) | |
140 | return ret; | |
141 | ||
ee0e87b1 | 142 | return mtd_device_register(mtd, NULL, 0); |
9fc51a37 ML |
143 | } |
144 | EXPORT_SYMBOL_GPL(sm_register_device); | |
145 | ||
146 | MODULE_LICENSE("GPL"); | |
147 | MODULE_AUTHOR("Maxim Levitsky <maximlevitsky@gmail.com>"); | |
148 | MODULE_DESCRIPTION("Common SmartMedia/xD functions"); |