1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
|
/*******************************************************************
* Simple Flash mapping for RDC3210 *
* *
* 2005.03.23 *
* Dante Su (dante_su@gemtek.com.tw) *
* Copyright (C) 2005 Gemtek Corporation *
*******************************************************************/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <asm/io.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/partitions.h>
#include <linux/autoconf.h>
#include <linux/sched.h>
#include <linux/magic.h>
static struct mtd_info *rdc3210_mtd;
struct map_info rdc3210_map =
{
.name = "RDC3210 Flash",
.size = CONFIG_MTD_RDC3210_SIZE,
.bankwidth = CONFIG_MTD_RDC3210_BUSWIDTH,
};
/* Dante: This is the default static mapping, however this is nothing but a hint. (Say dynamic mapping) */
static struct mtd_partition rdc3210_parts[] =
{
#if CONFIG_MTD_RDC3210_SIZE == 0x400000
{ name: "linux", offset: 0, size: 0x003C0000 }, /* 3840 KB = (Kernel + ROMFS) = (768 KB + 3072 KB) */
{ name: "romfs", offset: 0x000C0000, size: 0x00300000 }, /* 3072 KB */
{ name: "nvram", offset: 0x003C0000, size: 0x00010000 }, /* 64 KB */
#ifdef CONFIG_MTD_RDC3210_FACTORY_PRESENT
{ name: "factory", offset: 0x003D0000, size: 0x00010000 }, /* 64 KB */
#endif
{ name: "bootldr", offset: 0x003E0000, size: 0x00020000 }, /* 128 KB */
#elif CONFIG_MTD_RDC3210_SIZE == 0x200000
{ name: "linux", offset: 0x00008000, size: 0x001E8000 },
{ name: "romfs", offset: 0x000C8000, size: 0x00128000 },
{ name: "nvram", offset: 0x00000000, size: 0x00008000 }, /* 64 KB */
#ifdef CONFIG_MTD_RDC3210_FACTORY_PRESENT
#error Unsupported configuration!
#endif
{ name: "bootldr", offset: 0x001F0000, size: 0x00010000 },
#elif CONFIG_MTD_RDC3210_SIZE == 0x800000
{ name: "linux", offset: 0, size: 0x001F0000 }, /* 1984 KB */
{ name: "config", offset: 0x001F0000, size: 0x00010000 }, /* 64 KB */
{ name: "romfs", offset: 0x00200000, size: 0x005D0000 }, /* 5952 KB */
#ifdef CONFIG_MTD_RDC3210_FACTORY_PRESENT
{ name: "factory", offset: 0x007D0000, size: 0x00010000 }, /* 64 KB */
#endif
{ name: "bootldr", offset: 0x007E0000, size: 0x00010000 }, /* 64 KB */
#else
#error Unsupported configuration!
#endif
};
static __u32 crctab[257] = {
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba,
0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec,
0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940,
0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116,
0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a,
0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818,
0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c,
0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086,
0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4,
0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe,
0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252,
0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60,
0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04,
0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a,
0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e,
0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0,
0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6,
0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d,
0
};
static __u32 crc32(__u8 * buf, __u32 len)
{
register int i;
__u32 sum;
register __u32 s0;
s0 = ~0;
for (i = 0; i < len; i++) {
s0 = (s0 >> 8) ^ crctab[(__u8) (s0 & 0xFF) ^ buf[i]];
}
sum = ~s0;
return sum;
}
static void erase_callback(struct erase_info *done)
{
wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv;
wake_up(wait_q);
}
static int erase_write (struct mtd_info *mtd, unsigned long pos,
int len, const char *buf)
{
struct erase_info erase;
DECLARE_WAITQUEUE(wait, current);
wait_queue_head_t wait_q;
size_t retlen;
int ret;
/*
* First, let's erase the flash block.
*/
init_waitqueue_head(&wait_q);
erase.mtd = mtd;
erase.callback = erase_callback;
erase.addr = pos;
erase.len = len;
erase.priv = (u_long)&wait_q;
set_current_state(TASK_INTERRUPTIBLE);
add_wait_queue(&wait_q, &wait);
ret = mtd->erase(mtd, &erase);
if (ret) {
set_current_state(TASK_RUNNING);
remove_wait_queue(&wait_q, &wait);
printk (KERN_WARNING "erase of region [0x%lx, 0x%x] "
"on \"%s\" failed\n",
pos, len, mtd->name);
return ret;
}
schedule(); /* Wait for erase to finish. */
remove_wait_queue(&wait_q, &wait);
/*
* Next, writhe data to flash.
*/
ret = mtd->write (mtd, pos, len, &retlen, buf);
if (ret)
return ret;
if (retlen != len)
return -EIO;
return 0;
}
static int __init init_rdc3210_map(void)
{
rdc3210_map.phys = -rdc3210_map.size;
printk(KERN_NOTICE "flash device: %lx at %x\n", rdc3210_map.size, rdc3210_map.phys);
#if CONFIG_MTD_RDC3210_SIZE == 0x800000
simple_map_init(&rdc3210_map);
#endif
rdc3210_map.map_priv_1 = (unsigned long)(rdc3210_map.virt = ioremap_nocache(rdc3210_map.phys, rdc3210_map.size));
if (!rdc3210_map.map_priv_1)
{
printk("Failed to ioremap\n");
return -EIO;
}
rdc3210_mtd = do_map_probe("cfi_probe", &rdc3210_map);
#ifdef CONFIG_MTD_RDC3210_STATIC_MAP /* Dante: This is for fixed map */
if (rdc3210_mtd)
{
rdc3210_mtd->owner = THIS_MODULE;
add_mtd_partitions(rdc3210_mtd, rdc3210_parts, sizeof(rdc3210_parts)/sizeof(rdc3210_parts[0]));
return 0;
}
#else /* Dante: This is for dynamic mapping */
#include "imghdr.h"
typedef struct {
u8 magic[4];
u32 kernelsz, ramdisksz;
u8 magic2[4];
u32 sz2;
}sc_imghdr_t;
if (rdc3210_mtd)
{ // Dante
sc_imghdr_t *hdr2= (sc_imghdr_t *)(rdc3210_map.map_priv_1);
gt_imghdr_t *hdr = (gt_imghdr_t *)hdr2
#ifdef CONFIG_MTD_RDC3210_ALLOW_JFFS2
, *ptmp
#endif
;
int len, tmp, tmp2, tmp3, tmp4, hdr_type = 0;
if(!memcmp(hdr->magic, GTIMG_MAGIC, 4))
{
hdr_type = 1;
tmp = hdr->kernelsz + sizeof(gt_imghdr_t);
tmp2 = rdc3210_mtd->erasesize;
tmp3 = ((tmp / 32) + ((tmp % 32) ? 1 : 0)) * 32;
tmp4 = ((tmp / tmp2) + ((tmp % tmp2) ? 1 : 0)) * tmp2;
}
#ifndef CONFIG_MTD_RDC3210_ALLOW_JFFS2
else if (!memcmp(hdr2->magic, "CSYS", 4))
{
hdr_type = 2;
tmp = hdr2->ramdisksz + hdr2->kernelsz + sizeof(sc_imghdr_t);
tmp2 = rdc3210_mtd->erasesize;
tmp3 = ((tmp / 32) + ((tmp % 32) ? 1 : 0)) * 32;
tmp4 = ((tmp / tmp2) + ((tmp % tmp2) ? 1 : 0)) * tmp2;
}
#endif
else
{
iounmap((void *)rdc3210_map.map_priv_1);
rdc3210_map.map_priv_1 = 0L;
rdc3210_map.virt = NULL;
printk("Invalid MAGIC for Firmware Image!!!\n");
return -EIO;
}
#ifdef CONFIG_MTD_RDC3210_ALLOW_JFFS2
tmp = (tmp3 == tmp4) ? tmp4 + tmp2 : tmp4;
if ((ptmp = (gt_imghdr_t *)vmalloc(tmp)) == NULL)
{
iounmap((void *)rdc3210_map.map_priv_1);
rdc3210_map.map_priv_1 = 0L;
rdc3210_map.virt = NULL;
printk("Can't allocate 0x%08x for flash-reading buffer!\n", tmp);
return -ENOMEM;
}
if (rdc3210_mtd->read(rdc3210_mtd, 0, tmp, &len, (__u8 *)ptmp) || len != tmp)
{
vfree(ptmp);
iounmap((void *)rdc3210_map.map_priv_1);
rdc3210_map.map_priv_1 = 0L;
rdc3210_map.virt = NULL;
printk("Can't read that much flash! Read 0x%08x of it.\n", len);
return -EIO;
}
#endif
#ifdef CONFIG_MTD_RDC3210_FACTORY_PRESENT
/* 1. Adjust Redboot */
tmp = rdc3210_mtd->size - rdc3210_parts[4].size;
rdc3210_parts[4].offset = tmp - (tmp % tmp2);
rdc3210_parts[4].size = rdc3210_mtd->size - rdc3210_parts[4].offset;
/* 2. Adjust Factory Default */
tmp -= rdc3210_parts[3].size;
rdc3210_parts[3].offset = tmp - (tmp % tmp2);
rdc3210_parts[3].size = rdc3210_parts[4].offset - rdc3210_parts[3].offset;
#else
/* 1. Adjust Redboot */
tmp = rdc3210_mtd->size - rdc3210_parts[3].size;
rdc3210_parts[3].offset = tmp - (tmp % tmp2);
rdc3210_parts[3].size = rdc3210_mtd->size - rdc3210_parts[3].offset;
#endif
if (hdr_type == 1) {
/* 3. Adjust NVRAM */
#ifdef CONFIG_MTD_RDC3210_ALLOW_JFFS2
if (*(__u32 *)(((unsigned char *)ptmp)+tmp3) == SQUASHFS_MAGIC)
{
len = 1;
tmp4 = tmp3;
tmp = hdr->imagesz;
rdc3210_parts[2].name = "rootfs_data";
rdc3210_parts[2].offset = rdc3210_parts[0].offset + (((tmp / tmp2) + ((tmp % tmp2) ? 1 : 0)) * tmp2);
}
else
#else
tmp4 = tmp3;
#endif
{
len = 0;
tmp -= rdc3210_parts[2].size;
rdc3210_parts[2].offset = tmp - (tmp % tmp2);
}
rdc3210_parts[2].size = rdc3210_parts[3].offset - rdc3210_parts[2].offset;
}
else if (hdr_type == 2)
{
len = 0;
tmp4 = tmp3;
}
/* 4. Adjust Linux (Kernel + ROMFS) */
rdc3210_parts[0].size = rdc3210_parts[len + hdr_type + 1].offset - rdc3210_parts[0].offset;
/* 5. Adjust ROMFS */
rdc3210_parts[1].offset = rdc3210_parts[0].offset + tmp4;
rdc3210_parts[1].size = rdc3210_parts[hdr_type + 1].offset - rdc3210_parts[1].offset;
#ifdef CONFIG_MTD_RDC3210_ALLOW_JFFS2
if (!(hdr->reserved || len))
{
__u8 buf[1024];
ptmp->reserved = hdr->imagesz;
ptmp->imagesz = tmp4;
ptmp->checksum = ptmp->fastcksum = 0;
memcpy(buf, ptmp, 0x100);
memcpy(buf + 0x100, ((__u8 *)ptmp) + ((tmp4 >> 1) - ((tmp4 & 0x6) >> 1)), 0x100);
memcpy(buf + 0x200, ((__u8 *)ptmp) + (tmp4 - 0x200), 0x200);
ptmp->fastcksum = crc32(buf, sizeof(buf));
ptmp->checksum = crc32((__u8 *)ptmp, tmp4);
if (rdc3210_mtd->unlock) rdc3210_mtd->unlock(rdc3210_mtd, 0, tmp2);
if ((len = erase_write(rdc3210_mtd, 0, tmp2, (char *)ptmp)))
{
vfree(ptmp);
iounmap((void *)rdc3210_map.map_priv_1);
rdc3210_map.map_priv_1 = 0L;
rdc3210_map.virt = NULL;
printk("Couldn't erase! Got %d.\n", len);
return len;
}
if (rdc3210_mtd->sync) rdc3210_mtd->sync(rdc3210_mtd);
}
vfree(ptmp);
#endif
rdc3210_mtd->owner = THIS_MODULE;
add_mtd_partitions(rdc3210_mtd, rdc3210_parts, sizeof(rdc3210_parts)/sizeof(rdc3210_parts[0]));
return 0;
}
#endif
iounmap((void *)rdc3210_map.map_priv_1);
rdc3210_map.map_priv_1 = 0L;
rdc3210_map.virt = NULL;
return -ENXIO;
}
static void __exit cleanup_rdc3210_map(void)
{
if (rdc3210_mtd)
{
del_mtd_partitions(rdc3210_mtd);
map_destroy(rdc3210_mtd);
}
if (rdc3210_map.map_priv_1)
{
iounmap((void *)rdc3210_map.map_priv_1);
rdc3210_map.map_priv_1 = 0L;
rdc3210_map.virt = NULL;
}
}
module_init(init_rdc3210_map);
module_exit(cleanup_rdc3210_map);
|
