1
2 /*
3 * MTD driver for the 28F160F3 Flash Memory (non-CFI) on LART.
4 *
5 * Author: Abraham vd Merwe <abraham@2d3d.co.za>
6 *
7 * Copyright (c) 2001, 2d3D, Inc.
8 *
9 * This code is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 *
13 * References:
14 *
15 * [1] 3 Volt Fast Boot Block Flash Memory" Intel Datasheet
16 * - Order Number: 290644-005
17 * - January 2000
18 *
19 * [2] MTD internal API documentation
20 * - http://www.linux-mtd.infradead.org/tech/
21 *
22 * Limitations:
23 *
24 * Even though this driver is written for 3 Volt Fast Boot
25 * Block Flash Memory, it is rather specific to LART. With
26 * Minor modifications, notably the without data/address line
27 * mangling and different bus settings, etc. it should be
28 * trivial to adapt to other platforms.
29 *
30 * If somebody would sponsor me a different board, I'll
31 * adapt the driver (:
32 */
33
34 /* debugging */
35 //#define LART_DEBUG
36
37 /* partition support */
38 #define HAVE_PARTITIONS
39
40 #include <linux/kernel.h>
41 #include <linux/module.h>
42 #include <linux/types.h>
43 #include <linux/init.h>
44 #include <linux/errno.h>
45 #include <linux/string.h>
46 #include <linux/mtd/mtd.h>
47 #ifdef HAVE_PARTITIONS
48 #include <linux/mtd/partitions.h>
49 #endif
50
51 #ifndef CONFIG_SA1100_LART
52 #error This is for LART architecture only
53 #endif
54
55 static char module_name[] = "lart";
56
57 /*
58 * These values is specific to 28Fxxxx3 flash memory.
59 * See section 2.3.1 in "3 Volt Fast Boot Block Flash Memory" Intel Datasheet
60 */
61 #define FLASH_BLOCKSIZE_PARAM (4096 * BUSWIDTH)
62 #define FLASH_NUMBLOCKS_16m_PARAM 8
63 #define FLASH_NUMBLOCKS_8m_PARAM 8
64
65 /*
66 * These values is specific to 28Fxxxx3 flash memory.
67 * See section 2.3.2 in "3 Volt Fast Boot Block Flash Memory" Intel Datasheet
68 */
69 #define FLASH_BLOCKSIZE_MAIN (32768 * BUSWIDTH)
70 #define FLASH_NUMBLOCKS_16m_MAIN 31
71 #define FLASH_NUMBLOCKS_8m_MAIN 15
72
73 /*
74 * These values are specific to LART
75 */
76
77 /* general */
78 #define BUSWIDTH 4 /* don't change this - a lot of the code _will_ break if you change this */
79 #define FLASH_OFFSET 0xe8000000 /* see linux/arch/arm/mach-sa1100/lart.c */
80
81 /* blob */
82 #define NUM_BLOB_BLOCKS FLASH_NUMBLOCKS_16m_PARAM
83 #define BLOB_START 0x00000000
84 #define BLOB_LEN (NUM_BLOB_BLOCKS * FLASH_BLOCKSIZE_PARAM)
85
86 /* kernel */
87 #define NUM_KERNEL_BLOCKS 7
88 #define KERNEL_START (BLOB_START + BLOB_LEN)
89 #define KERNEL_LEN (NUM_KERNEL_BLOCKS * FLASH_BLOCKSIZE_MAIN)
90
91 /* initial ramdisk */
92 #define NUM_INITRD_BLOCKS 24
93 #define INITRD_START (KERNEL_START + KERNEL_LEN)
94 #define INITRD_LEN (NUM_INITRD_BLOCKS * FLASH_BLOCKSIZE_MAIN)
95
96 /*
97 * See section 4.0 in "3 Volt Fast Boot Block Flash Memory" Intel Datasheet
98 */
99 #define READ_ARRAY 0x00FF00FF /* Read Array/Reset */
100 #define READ_ID_CODES 0x00900090 /* Read Identifier Codes */
101 #define ERASE_SETUP 0x00200020 /* Block Erase */
102 #define ERASE_CONFIRM 0x00D000D0 /* Block Erase and Program Resume */
103 #define PGM_SETUP 0x00400040 /* Program */
104 #define STATUS_READ 0x00700070 /* Read Status Register */
105 #define STATUS_CLEAR 0x00500050 /* Clear Status Register */
106 #define STATUS_BUSY 0x00800080 /* Write State Machine Status (WSMS) */
107 #define STATUS_ERASE_ERR 0x00200020 /* Erase Status (ES) */
108 #define STATUS_PGM_ERR 0x00100010 /* Program Status (PS) */
109
110 /*
111 * See section 4.2 in "3 Volt Fast Boot Block Flash Memory" Intel Datasheet
112 */
113 #define FLASH_MANUFACTURER 0x00890089
114 #define FLASH_DEVICE_8mbit_TOP 0x88f188f1
115 #define FLASH_DEVICE_8mbit_BOTTOM 0x88f288f2
116 #define FLASH_DEVICE_16mbit_TOP 0x88f388f3
117 #define FLASH_DEVICE_16mbit_BOTTOM 0x88f488f4
118
119 /***************************************************************************************************/
120
121 /*
122 * The data line mapping on LART is as follows:
123 *
124 * U2 CPU | U3 CPU
125 * -------------------
126 * 0 20 | 0 12
127 * 1 22 | 1 14
128 * 2 19 | 2 11
129 * 3 17 | 3 9
130 * 4 24 | 4 0
131 * 5 26 | 5 2
132 * 6 31 | 6 7
133 * 7 29 | 7 5
134 * 8 21 | 8 13
135 * 9 23 | 9 15
136 * 10 18 | 10 10
137 * 11 16 | 11 8
138 * 12 25 | 12 1
139 * 13 27 | 13 3
140 * 14 30 | 14 6
141 * 15 28 | 15 4
142 */
143
144 /* Mangle data (x) */
145 #define DATA_TO_FLASH(x) \
146 ( \
147 (((x) & 0x08009000) >> 11) + \
148 (((x) & 0x00002000) >> 10) + \
149 (((x) & 0x04004000) >> 8) + \
150 (((x) & 0x00000010) >> 4) + \
151 (((x) & 0x91000820) >> 3) + \
152 (((x) & 0x22080080) >> 2) + \
153 ((x) & 0x40000400) + \
154 (((x) & 0x00040040) << 1) + \
155 (((x) & 0x00110000) << 4) + \
156 (((x) & 0x00220100) << 5) + \
157 (((x) & 0x00800208) << 6) + \
158 (((x) & 0x00400004) << 9) + \
159 (((x) & 0x00000001) << 12) + \
160 (((x) & 0x00000002) << 13) \
161 )
162
163 /* Unmangle data (x) */
164 #define FLASH_TO_DATA(x) \
165 ( \
166 (((x) & 0x00010012) << 11) + \
167 (((x) & 0x00000008) << 10) + \
168 (((x) & 0x00040040) << 8) + \
169 (((x) & 0x00000001) << 4) + \
170 (((x) & 0x12200104) << 3) + \
171 (((x) & 0x08820020) << 2) + \
172 ((x) & 0x40000400) + \
173 (((x) & 0x00080080) >> 1) + \
174 (((x) & 0x01100000) >> 4) + \
175 (((x) & 0x04402000) >> 5) + \
176 (((x) & 0x20008200) >> 6) + \
177 (((x) & 0x80000800) >> 9) + \
178 (((x) & 0x00001000) >> 12) + \
179 (((x) & 0x00004000) >> 13) \
180 )
181
182 /*
183 * The address line mapping on LART is as follows:
184 *
185 * U3 CPU | U2 CPU
186 * -------------------
187 * 0 2 | 0 2
188 * 1 3 | 1 3
189 * 2 9 | 2 9
190 * 3 13 | 3 8
191 * 4 8 | 4 7
192 * 5 12 | 5 6
193 * 6 11 | 6 5
194 * 7 10 | 7 4
195 * 8 4 | 8 10
196 * 9 5 | 9 11
197 * 10 6 | 10 12
198 * 11 7 | 11 13
199 *
200 * BOOT BLOCK BOUNDARY
201 *
202 * 12 15 | 12 15
203 * 13 14 | 13 14
204 * 14 16 | 14 16
205 *
206 * MAIN BLOCK BOUNDARY
207 *
208 * 15 17 | 15 18
209 * 16 18 | 16 17
210 * 17 20 | 17 20
211 * 18 19 | 18 19
212 * 19 21 | 19 21
213 *
214 * As we can see from above, the addresses aren't mangled across
215 * block boundaries, so we don't need to worry about address
216 * translations except for sending/reading commands during
217 * initialization
218 */
219
220 /* Mangle address (x) on chip U2 */
221 #define ADDR_TO_FLASH_U2(x) \
222 ( \
223 (((x) & 0x00000f00) >> 4) + \
224 (((x) & 0x00042000) << 1) + \
225 (((x) & 0x0009c003) << 2) + \
226 (((x) & 0x00021080) << 3) + \
227 (((x) & 0x00000010) << 4) + \
228 (((x) & 0x00000040) << 5) + \
229 (((x) & 0x00000024) << 7) + \
230 (((x) & 0x00000008) << 10) \
231 )
232
233 /* Unmangle address (x) on chip U2 */
234 #define FLASH_U2_TO_ADDR(x) \
235 ( \
236 (((x) << 4) & 0x00000f00) + \
237 (((x) >> 1) & 0x00042000) + \
238 (((x) >> 2) & 0x0009c003) + \
239 (((x) >> 3) & 0x00021080) + \
240 (((x) >> 4) & 0x00000010) + \
241 (((x) >> 5) & 0x00000040) + \
242 (((x) >> 7) & 0x00000024) + \
243 (((x) >> 10) & 0x00000008) \
244 )
245
246 /* Mangle address (x) on chip U3 */
247 #define ADDR_TO_FLASH_U3(x) \
248 ( \
249 (((x) & 0x00000080) >> 3) + \
250 (((x) & 0x00000040) >> 1) + \
251 (((x) & 0x00052020) << 1) + \
252 (((x) & 0x00084f03) << 2) + \
253 (((x) & 0x00029010) << 3) + \
254 (((x) & 0x00000008) << 5) + \
255 (((x) & 0x00000004) << 7) \
256 )
257
258 /* Unmangle address (x) on chip U3 */
259 #define FLASH_U3_TO_ADDR(x) \
260 ( \
261 (((x) << 3) & 0x00000080) + \
262 (((x) << 1) & 0x00000040) + \
263 (((x) >> 1) & 0x00052020) + \
264 (((x) >> 2) & 0x00084f03) + \
265 (((x) >> 3) & 0x00029010) + \
266 (((x) >> 5) & 0x00000008) + \
267 (((x) >> 7) & 0x00000004) \
268 )
269
270 /***************************************************************************************************/
271
read8(__u32 offset)272 static __u8 read8 (__u32 offset)
273 {
274 volatile __u8 *data = (__u8 *) (FLASH_OFFSET + offset);
275 #ifdef LART_DEBUG
276 printk (KERN_DEBUG "%s(): 0x%.8x -> 0x%.2x\n", __func__, offset, *data);
277 #endif
278 return (*data);
279 }
280
read32(__u32 offset)281 static __u32 read32 (__u32 offset)
282 {
283 volatile __u32 *data = (__u32 *) (FLASH_OFFSET + offset);
284 #ifdef LART_DEBUG
285 printk (KERN_DEBUG "%s(): 0x%.8x -> 0x%.8x\n", __func__, offset, *data);
286 #endif
287 return (*data);
288 }
289
write32(__u32 x,__u32 offset)290 static void write32 (__u32 x,__u32 offset)
291 {
292 volatile __u32 *data = (__u32 *) (FLASH_OFFSET + offset);
293 *data = x;
294 #ifdef LART_DEBUG
295 printk (KERN_DEBUG "%s(): 0x%.8x <- 0x%.8x\n", __func__, offset, *data);
296 #endif
297 }
298
299 /***************************************************************************************************/
300
301 /*
302 * Probe for 16mbit flash memory on a LART board without doing
303 * too much damage. Since we need to write 1 dword to memory,
304 * we're f**cked if this happens to be DRAM since we can't
305 * restore the memory (otherwise we might exit Read Array mode).
306 *
307 * Returns 1 if we found 16mbit flash memory on LART, 0 otherwise.
308 */
flash_probe(void)309 static int flash_probe (void)
310 {
311 __u32 manufacturer,devtype;
312
313 /* setup "Read Identifier Codes" mode */
314 write32 (DATA_TO_FLASH (READ_ID_CODES),0x00000000);
315
316 /* probe U2. U2/U3 returns the same data since the first 3
317 * address lines is mangled in the same way */
318 manufacturer = FLASH_TO_DATA (read32 (ADDR_TO_FLASH_U2 (0x00000000)));
319 devtype = FLASH_TO_DATA (read32 (ADDR_TO_FLASH_U2 (0x00000001)));
320
321 /* put the flash back into command mode */
322 write32 (DATA_TO_FLASH (READ_ARRAY),0x00000000);
323
324 return (manufacturer == FLASH_MANUFACTURER && (devtype == FLASH_DEVICE_16mbit_TOP || devtype == FLASH_DEVICE_16mbit_BOTTOM));
325 }
326
327 /*
328 * Erase one block of flash memory at offset ``offset'' which is any
329 * address within the block which should be erased.
330 *
331 * Returns 1 if successful, 0 otherwise.
332 */
erase_block(__u32 offset)333 static inline int erase_block (__u32 offset)
334 {
335 __u32 status;
336
337 #ifdef LART_DEBUG
338 printk (KERN_DEBUG "%s(): 0x%.8x\n", __func__, offset);
339 #endif
340
341 /* erase and confirm */
342 write32 (DATA_TO_FLASH (ERASE_SETUP),offset);
343 write32 (DATA_TO_FLASH (ERASE_CONFIRM),offset);
344
345 /* wait for block erase to finish */
346 do
347 {
348 write32 (DATA_TO_FLASH (STATUS_READ),offset);
349 status = FLASH_TO_DATA (read32 (offset));
350 }
351 while ((~status & STATUS_BUSY) != 0);
352
353 /* put the flash back into command mode */
354 write32 (DATA_TO_FLASH (READ_ARRAY),offset);
355
356 /* was the erase successfull? */
357 if ((status & STATUS_ERASE_ERR))
358 {
359 printk (KERN_WARNING "%s: erase error at address 0x%.8x.\n",module_name,offset);
360 return (0);
361 }
362
363 return (1);
364 }
365
flash_erase(struct mtd_info * mtd,struct erase_info * instr)366 static int flash_erase (struct mtd_info *mtd,struct erase_info *instr)
367 {
368 __u32 addr,len;
369 int i,first;
370
371 #ifdef LART_DEBUG
372 printk (KERN_DEBUG "%s(addr = 0x%.8x, len = %d)\n", __func__, instr->addr, instr->len);
373 #endif
374
375 /* sanity checks */
376 if (instr->addr + instr->len > mtd->size) return (-EINVAL);
377
378 /*
379 * check that both start and end of the requested erase are
380 * aligned with the erasesize at the appropriate addresses.
381 *
382 * skip all erase regions which are ended before the start of
383 * the requested erase. Actually, to save on the calculations,
384 * we skip to the first erase region which starts after the
385 * start of the requested erase, and then go back one.
386 */
387 for (i = 0; i < mtd->numeraseregions && instr->addr >= mtd->eraseregions[i].offset; i++) ;
388 i--;
389
390 /*
391 * ok, now i is pointing at the erase region in which this
392 * erase request starts. Check the start of the requested
393 * erase range is aligned with the erase size which is in
394 * effect here.
395 */
396 if (instr->addr & (mtd->eraseregions[i].erasesize - 1)) return (-EINVAL);
397
398 /* Remember the erase region we start on */
399 first = i;
400
401 /*
402 * next, check that the end of the requested erase is aligned
403 * with the erase region at that address.
404 *
405 * as before, drop back one to point at the region in which
406 * the address actually falls
407 */
408 for (; i < mtd->numeraseregions && instr->addr + instr->len >= mtd->eraseregions[i].offset; i++) ;
409 i--;
410
411 /* is the end aligned on a block boundary? */
412 if ((instr->addr + instr->len) & (mtd->eraseregions[i].erasesize - 1)) return (-EINVAL);
413
414 addr = instr->addr;
415 len = instr->len;
416
417 i = first;
418
419 /* now erase those blocks */
420 while (len)
421 {
422 if (!erase_block (addr))
423 {
424 instr->state = MTD_ERASE_FAILED;
425 return (-EIO);
426 }
427
428 addr += mtd->eraseregions[i].erasesize;
429 len -= mtd->eraseregions[i].erasesize;
430
431 if (addr == mtd->eraseregions[i].offset + (mtd->eraseregions[i].erasesize * mtd->eraseregions[i].numblocks)) i++;
432 }
433
434 instr->state = MTD_ERASE_DONE;
435 mtd_erase_callback(instr);
436
437 return (0);
438 }
439
flash_read(struct mtd_info * mtd,loff_t from,size_t len,size_t * retlen,u_char * buf)440 static int flash_read (struct mtd_info *mtd,loff_t from,size_t len,size_t *retlen,u_char *buf)
441 {
442 #ifdef LART_DEBUG
443 printk (KERN_DEBUG "%s(from = 0x%.8x, len = %d)\n", __func__, (__u32)from, len);
444 #endif
445
446 /* sanity checks */
447 if (!len) return (0);
448 if (from + len > mtd->size) return (-EINVAL);
449
450 /* we always read len bytes */
451 *retlen = len;
452
453 /* first, we read bytes until we reach a dword boundary */
454 if (from & (BUSWIDTH - 1))
455 {
456 int gap = BUSWIDTH - (from & (BUSWIDTH - 1));
457
458 while (len && gap--) *buf++ = read8 (from++), len--;
459 }
460
461 /* now we read dwords until we reach a non-dword boundary */
462 while (len >= BUSWIDTH)
463 {
464 *((__u32 *) buf) = read32 (from);
465
466 buf += BUSWIDTH;
467 from += BUSWIDTH;
468 len -= BUSWIDTH;
469 }
470
471 /* top up the last unaligned bytes */
472 if (len & (BUSWIDTH - 1))
473 while (len--) *buf++ = read8 (from++);
474
475 return (0);
476 }
477
478 /*
479 * Write one dword ``x'' to flash memory at offset ``offset''. ``offset''
480 * must be 32 bits, i.e. it must be on a dword boundary.
481 *
482 * Returns 1 if successful, 0 otherwise.
483 */
write_dword(__u32 offset,__u32 x)484 static inline int write_dword (__u32 offset,__u32 x)
485 {
486 __u32 status;
487
488 #ifdef LART_DEBUG
489 printk (KERN_DEBUG "%s(): 0x%.8x <- 0x%.8x\n", __func__, offset, x);
490 #endif
491
492 /* setup writing */
493 write32 (DATA_TO_FLASH (PGM_SETUP),offset);
494
495 /* write the data */
496 write32 (x,offset);
497
498 /* wait for the write to finish */
499 do
500 {
501 write32 (DATA_TO_FLASH (STATUS_READ),offset);
502 status = FLASH_TO_DATA (read32 (offset));
503 }
504 while ((~status & STATUS_BUSY) != 0);
505
506 /* put the flash back into command mode */
507 write32 (DATA_TO_FLASH (READ_ARRAY),offset);
508
509 /* was the write successfull? */
510 if ((status & STATUS_PGM_ERR) || read32 (offset) != x)
511 {
512 printk (KERN_WARNING "%s: write error at address 0x%.8x.\n",module_name,offset);
513 return (0);
514 }
515
516 return (1);
517 }
518
flash_write(struct mtd_info * mtd,loff_t to,size_t len,size_t * retlen,const u_char * buf)519 static int flash_write (struct mtd_info *mtd,loff_t to,size_t len,size_t *retlen,const u_char *buf)
520 {
521 __u8 tmp[4];
522 int i,n;
523
524 #ifdef LART_DEBUG
525 printk (KERN_DEBUG "%s(to = 0x%.8x, len = %d)\n", __func__, (__u32)to, len);
526 #endif
527
528 *retlen = 0;
529
530 /* sanity checks */
531 if (!len) return (0);
532 if (to + len > mtd->size) return (-EINVAL);
533
534 /* first, we write a 0xFF.... padded byte until we reach a dword boundary */
535 if (to & (BUSWIDTH - 1))
536 {
537 __u32 aligned = to & ~(BUSWIDTH - 1);
538 int gap = to - aligned;
539
540 i = n = 0;
541
542 while (gap--) tmp[i++] = 0xFF;
543 while (len && i < BUSWIDTH) tmp[i++] = buf[n++], len--;
544 while (i < BUSWIDTH) tmp[i++] = 0xFF;
545
546 if (!write_dword (aligned,*((__u32 *) tmp))) return (-EIO);
547
548 to += n;
549 buf += n;
550 *retlen += n;
551 }
552
553 /* now we write dwords until we reach a non-dword boundary */
554 while (len >= BUSWIDTH)
555 {
556 if (!write_dword (to,*((__u32 *) buf))) return (-EIO);
557
558 to += BUSWIDTH;
559 buf += BUSWIDTH;
560 *retlen += BUSWIDTH;
561 len -= BUSWIDTH;
562 }
563
564 /* top up the last unaligned bytes, padded with 0xFF.... */
565 if (len & (BUSWIDTH - 1))
566 {
567 i = n = 0;
568
569 while (len--) tmp[i++] = buf[n++];
570 while (i < BUSWIDTH) tmp[i++] = 0xFF;
571
572 if (!write_dword (to,*((__u32 *) tmp))) return (-EIO);
573
574 *retlen += n;
575 }
576
577 return (0);
578 }
579
580 /***************************************************************************************************/
581
582 static struct mtd_info mtd;
583
584 static struct mtd_erase_region_info erase_regions[] = {
585 /* parameter blocks */
586 {
587 .offset = 0x00000000,
588 .erasesize = FLASH_BLOCKSIZE_PARAM,
589 .numblocks = FLASH_NUMBLOCKS_16m_PARAM,
590 },
591 /* main blocks */
592 {
593 .offset = FLASH_BLOCKSIZE_PARAM * FLASH_NUMBLOCKS_16m_PARAM,
594 .erasesize = FLASH_BLOCKSIZE_MAIN,
595 .numblocks = FLASH_NUMBLOCKS_16m_MAIN,
596 }
597 };
598
599 #ifdef HAVE_PARTITIONS
600 static struct mtd_partition lart_partitions[] = {
601 /* blob */
602 {
603 .name = "blob",
604 .offset = BLOB_START,
605 .size = BLOB_LEN,
606 },
607 /* kernel */
608 {
609 .name = "kernel",
610 .offset = KERNEL_START, /* MTDPART_OFS_APPEND */
611 .size = KERNEL_LEN,
612 },
613 /* initial ramdisk / file system */
614 {
615 .name = "file system",
616 .offset = INITRD_START, /* MTDPART_OFS_APPEND */
617 .size = INITRD_LEN, /* MTDPART_SIZ_FULL */
618 }
619 };
620 #endif
621
lart_flash_init(void)622 static int __init lart_flash_init (void)
623 {
624 int result;
625 memset (&mtd,0,sizeof (mtd));
626 printk ("MTD driver for LART. Written by Abraham vd Merwe <abraham@2d3d.co.za>\n");
627 printk ("%s: Probing for 28F160x3 flash on LART...\n",module_name);
628 if (!flash_probe ())
629 {
630 printk (KERN_WARNING "%s: Found no LART compatible flash device\n",module_name);
631 return (-ENXIO);
632 }
633 printk ("%s: This looks like a LART board to me.\n",module_name);
634 mtd.name = module_name;
635 mtd.type = MTD_NORFLASH;
636 mtd.writesize = 1;
637 mtd.flags = MTD_CAP_NORFLASH;
638 mtd.size = FLASH_BLOCKSIZE_PARAM * FLASH_NUMBLOCKS_16m_PARAM + FLASH_BLOCKSIZE_MAIN * FLASH_NUMBLOCKS_16m_MAIN;
639 mtd.erasesize = FLASH_BLOCKSIZE_MAIN;
640 mtd.numeraseregions = ARRAY_SIZE(erase_regions);
641 mtd.eraseregions = erase_regions;
642 mtd.erase = flash_erase;
643 mtd.read = flash_read;
644 mtd.write = flash_write;
645 mtd.owner = THIS_MODULE;
646
647 #ifdef LART_DEBUG
648 printk (KERN_DEBUG
649 "mtd.name = %s\n"
650 "mtd.size = 0x%.8x (%uM)\n"
651 "mtd.erasesize = 0x%.8x (%uK)\n"
652 "mtd.numeraseregions = %d\n",
653 mtd.name,
654 mtd.size,mtd.size / (1024*1024),
655 mtd.erasesize,mtd.erasesize / 1024,
656 mtd.numeraseregions);
657
658 if (mtd.numeraseregions)
659 for (result = 0; result < mtd.numeraseregions; result++)
660 printk (KERN_DEBUG
661 "\n\n"
662 "mtd.eraseregions[%d].offset = 0x%.8x\n"
663 "mtd.eraseregions[%d].erasesize = 0x%.8x (%uK)\n"
664 "mtd.eraseregions[%d].numblocks = %d\n",
665 result,mtd.eraseregions[result].offset,
666 result,mtd.eraseregions[result].erasesize,mtd.eraseregions[result].erasesize / 1024,
667 result,mtd.eraseregions[result].numblocks);
668
669 #ifdef HAVE_PARTITIONS
670 printk ("\npartitions = %d\n", ARRAY_SIZE(lart_partitions));
671
672 for (result = 0; result < ARRAY_SIZE(lart_partitions); result++)
673 printk (KERN_DEBUG
674 "\n\n"
675 "lart_partitions[%d].name = %s\n"
676 "lart_partitions[%d].offset = 0x%.8x\n"
677 "lart_partitions[%d].size = 0x%.8x (%uK)\n",
678 result,lart_partitions[result].name,
679 result,lart_partitions[result].offset,
680 result,lart_partitions[result].size,lart_partitions[result].size / 1024);
681 #endif
682 #endif
683
684 #ifndef HAVE_PARTITIONS
685 result = add_mtd_device (&mtd);
686 #else
687 result = add_mtd_partitions (&mtd,lart_partitions, ARRAY_SIZE(lart_partitions));
688 #endif
689
690 return (result);
691 }
692
lart_flash_exit(void)693 static void __exit lart_flash_exit (void)
694 {
695 #ifndef HAVE_PARTITIONS
696 del_mtd_device (&mtd);
697 #else
698 del_mtd_partitions (&mtd);
699 #endif
700 }
701
702 module_init (lart_flash_init);
703 module_exit (lart_flash_exit);
704
705 MODULE_LICENSE("GPL");
706 MODULE_AUTHOR("Abraham vd Merwe <abraham@2d3d.co.za>");
707 MODULE_DESCRIPTION("MTD driver for Intel 28F160F3 on LART board");
708