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Merge tag 'gpio-v4.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux...
[deliverable/linux.git] / drivers / mtd / devices / lart.c
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/
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 #include <linux/kernel.h>
38 #include <linux/module.h>
39 #include <linux/types.h>
40 #include <linux/init.h>
41 #include <linux/errno.h>
42 #include <linux/string.h>
43 #include <linux/mtd/mtd.h>
44 #include <linux/mtd/partitions.h>
45
46 #ifndef CONFIG_SA1100_LART
47 #error This is for LART architecture only
48 #endif
49
50 static char module_name[] = "lart";
51
52 /*
53 * These values is specific to 28Fxxxx3 flash memory.
54 * See section 2.3.1 in "3 Volt Fast Boot Block Flash Memory" Intel Datasheet
55 */
56 #define FLASH_BLOCKSIZE_PARAM (4096 * BUSWIDTH)
57 #define FLASH_NUMBLOCKS_16m_PARAM 8
58 #define FLASH_NUMBLOCKS_8m_PARAM 8
59
60 /*
61 * These values is specific to 28Fxxxx3 flash memory.
62 * See section 2.3.2 in "3 Volt Fast Boot Block Flash Memory" Intel Datasheet
63 */
64 #define FLASH_BLOCKSIZE_MAIN (32768 * BUSWIDTH)
65 #define FLASH_NUMBLOCKS_16m_MAIN 31
66 #define FLASH_NUMBLOCKS_8m_MAIN 15
67
68 /*
69 * These values are specific to LART
70 */
71
72 /* general */
73 #define BUSWIDTH 4 /* don't change this - a lot of the code _will_ break if you change this */
74 #define FLASH_OFFSET 0xe8000000 /* see linux/arch/arm/mach-sa1100/lart.c */
75
76 /* blob */
77 #define NUM_BLOB_BLOCKS FLASH_NUMBLOCKS_16m_PARAM
78 #define BLOB_START 0x00000000
79 #define BLOB_LEN (NUM_BLOB_BLOCKS * FLASH_BLOCKSIZE_PARAM)
80
81 /* kernel */
82 #define NUM_KERNEL_BLOCKS 7
83 #define KERNEL_START (BLOB_START + BLOB_LEN)
84 #define KERNEL_LEN (NUM_KERNEL_BLOCKS * FLASH_BLOCKSIZE_MAIN)
85
86 /* initial ramdisk */
87 #define NUM_INITRD_BLOCKS 24
88 #define INITRD_START (KERNEL_START + KERNEL_LEN)
89 #define INITRD_LEN (NUM_INITRD_BLOCKS * FLASH_BLOCKSIZE_MAIN)
90
91 /*
92 * See section 4.0 in "3 Volt Fast Boot Block Flash Memory" Intel Datasheet
93 */
94 #define READ_ARRAY 0x00FF00FF /* Read Array/Reset */
95 #define READ_ID_CODES 0x00900090 /* Read Identifier Codes */
96 #define ERASE_SETUP 0x00200020 /* Block Erase */
97 #define ERASE_CONFIRM 0x00D000D0 /* Block Erase and Program Resume */
98 #define PGM_SETUP 0x00400040 /* Program */
99 #define STATUS_READ 0x00700070 /* Read Status Register */
100 #define STATUS_CLEAR 0x00500050 /* Clear Status Register */
101 #define STATUS_BUSY 0x00800080 /* Write State Machine Status (WSMS) */
102 #define STATUS_ERASE_ERR 0x00200020 /* Erase Status (ES) */
103 #define STATUS_PGM_ERR 0x00100010 /* Program Status (PS) */
104
105 /*
106 * See section 4.2 in "3 Volt Fast Boot Block Flash Memory" Intel Datasheet
107 */
108 #define FLASH_MANUFACTURER 0x00890089
109 #define FLASH_DEVICE_8mbit_TOP 0x88f188f1
110 #define FLASH_DEVICE_8mbit_BOTTOM 0x88f288f2
111 #define FLASH_DEVICE_16mbit_TOP 0x88f388f3
112 #define FLASH_DEVICE_16mbit_BOTTOM 0x88f488f4
113
114 /***************************************************************************************************/
115
116 /*
117 * The data line mapping on LART is as follows:
118 *
119 * U2 CPU | U3 CPU
120 * -------------------
121 * 0 20 | 0 12
122 * 1 22 | 1 14
123 * 2 19 | 2 11
124 * 3 17 | 3 9
125 * 4 24 | 4 0
126 * 5 26 | 5 2
127 * 6 31 | 6 7
128 * 7 29 | 7 5
129 * 8 21 | 8 13
130 * 9 23 | 9 15
131 * 10 18 | 10 10
132 * 11 16 | 11 8
133 * 12 25 | 12 1
134 * 13 27 | 13 3
135 * 14 30 | 14 6
136 * 15 28 | 15 4
137 */
138
139 /* Mangle data (x) */
140 #define DATA_TO_FLASH(x) \
141 ( \
142 (((x) & 0x08009000) >> 11) + \
143 (((x) & 0x00002000) >> 10) + \
144 (((x) & 0x04004000) >> 8) + \
145 (((x) & 0x00000010) >> 4) + \
146 (((x) & 0x91000820) >> 3) + \
147 (((x) & 0x22080080) >> 2) + \
148 ((x) & 0x40000400) + \
149 (((x) & 0x00040040) << 1) + \
150 (((x) & 0x00110000) << 4) + \
151 (((x) & 0x00220100) << 5) + \
152 (((x) & 0x00800208) << 6) + \
153 (((x) & 0x00400004) << 9) + \
154 (((x) & 0x00000001) << 12) + \
155 (((x) & 0x00000002) << 13) \
156 )
157
158 /* Unmangle data (x) */
159 #define FLASH_TO_DATA(x) \
160 ( \
161 (((x) & 0x00010012) << 11) + \
162 (((x) & 0x00000008) << 10) + \
163 (((x) & 0x00040040) << 8) + \
164 (((x) & 0x00000001) << 4) + \
165 (((x) & 0x12200104) << 3) + \
166 (((x) & 0x08820020) << 2) + \
167 ((x) & 0x40000400) + \
168 (((x) & 0x00080080) >> 1) + \
169 (((x) & 0x01100000) >> 4) + \
170 (((x) & 0x04402000) >> 5) + \
171 (((x) & 0x20008200) >> 6) + \
172 (((x) & 0x80000800) >> 9) + \
173 (((x) & 0x00001000) >> 12) + \
174 (((x) & 0x00004000) >> 13) \
175 )
176
177 /*
178 * The address line mapping on LART is as follows:
179 *
180 * U3 CPU | U2 CPU
181 * -------------------
182 * 0 2 | 0 2
183 * 1 3 | 1 3
184 * 2 9 | 2 9
185 * 3 13 | 3 8
186 * 4 8 | 4 7
187 * 5 12 | 5 6
188 * 6 11 | 6 5
189 * 7 10 | 7 4
190 * 8 4 | 8 10
191 * 9 5 | 9 11
192 * 10 6 | 10 12
193 * 11 7 | 11 13
194 *
195 * BOOT BLOCK BOUNDARY
196 *
197 * 12 15 | 12 15
198 * 13 14 | 13 14
199 * 14 16 | 14 16
200 *
201 * MAIN BLOCK BOUNDARY
202 *
203 * 15 17 | 15 18
204 * 16 18 | 16 17
205 * 17 20 | 17 20
206 * 18 19 | 18 19
207 * 19 21 | 19 21
208 *
209 * As we can see from above, the addresses aren't mangled across
210 * block boundaries, so we don't need to worry about address
211 * translations except for sending/reading commands during
212 * initialization
213 */
214
215 /* Mangle address (x) on chip U2 */
216 #define ADDR_TO_FLASH_U2(x) \
217 ( \
218 (((x) & 0x00000f00) >> 4) + \
219 (((x) & 0x00042000) << 1) + \
220 (((x) & 0x0009c003) << 2) + \
221 (((x) & 0x00021080) << 3) + \
222 (((x) & 0x00000010) << 4) + \
223 (((x) & 0x00000040) << 5) + \
224 (((x) & 0x00000024) << 7) + \
225 (((x) & 0x00000008) << 10) \
226 )
227
228 /* Unmangle address (x) on chip U2 */
229 #define FLASH_U2_TO_ADDR(x) \
230 ( \
231 (((x) << 4) & 0x00000f00) + \
232 (((x) >> 1) & 0x00042000) + \
233 (((x) >> 2) & 0x0009c003) + \
234 (((x) >> 3) & 0x00021080) + \
235 (((x) >> 4) & 0x00000010) + \
236 (((x) >> 5) & 0x00000040) + \
237 (((x) >> 7) & 0x00000024) + \
238 (((x) >> 10) & 0x00000008) \
239 )
240
241 /* Mangle address (x) on chip U3 */
242 #define ADDR_TO_FLASH_U3(x) \
243 ( \
244 (((x) & 0x00000080) >> 3) + \
245 (((x) & 0x00000040) >> 1) + \
246 (((x) & 0x00052020) << 1) + \
247 (((x) & 0x00084f03) << 2) + \
248 (((x) & 0x00029010) << 3) + \
249 (((x) & 0x00000008) << 5) + \
250 (((x) & 0x00000004) << 7) \
251 )
252
253 /* Unmangle address (x) on chip U3 */
254 #define FLASH_U3_TO_ADDR(x) \
255 ( \
256 (((x) << 3) & 0x00000080) + \
257 (((x) << 1) & 0x00000040) + \
258 (((x) >> 1) & 0x00052020) + \
259 (((x) >> 2) & 0x00084f03) + \
260 (((x) >> 3) & 0x00029010) + \
261 (((x) >> 5) & 0x00000008) + \
262 (((x) >> 7) & 0x00000004) \
263 )
264
265 /***************************************************************************************************/
266
267 static __u8 read8 (__u32 offset)
268 {
269 volatile __u8 *data = (__u8 *) (FLASH_OFFSET + offset);
270 #ifdef LART_DEBUG
271 printk (KERN_DEBUG "%s(): 0x%.8x -> 0x%.2x\n", __func__, offset, *data);
272 #endif
273 return (*data);
274 }
275
276 static __u32 read32 (__u32 offset)
277 {
278 volatile __u32 *data = (__u32 *) (FLASH_OFFSET + offset);
279 #ifdef LART_DEBUG
280 printk (KERN_DEBUG "%s(): 0x%.8x -> 0x%.8x\n", __func__, offset, *data);
281 #endif
282 return (*data);
283 }
284
285 static void write32 (__u32 x,__u32 offset)
286 {
287 volatile __u32 *data = (__u32 *) (FLASH_OFFSET + offset);
288 *data = x;
289 #ifdef LART_DEBUG
290 printk (KERN_DEBUG "%s(): 0x%.8x <- 0x%.8x\n", __func__, offset, *data);
291 #endif
292 }
293
294 /***************************************************************************************************/
295
296 /*
297 * Probe for 16mbit flash memory on a LART board without doing
298 * too much damage. Since we need to write 1 dword to memory,
299 * we're f**cked if this happens to be DRAM since we can't
300 * restore the memory (otherwise we might exit Read Array mode).
301 *
302 * Returns 1 if we found 16mbit flash memory on LART, 0 otherwise.
303 */
304 static int flash_probe (void)
305 {
306 __u32 manufacturer,devtype;
307
308 /* setup "Read Identifier Codes" mode */
309 write32 (DATA_TO_FLASH (READ_ID_CODES),0x00000000);
310
311 /* probe U2. U2/U3 returns the same data since the first 3
312 * address lines is mangled in the same way */
313 manufacturer = FLASH_TO_DATA (read32 (ADDR_TO_FLASH_U2 (0x00000000)));
314 devtype = FLASH_TO_DATA (read32 (ADDR_TO_FLASH_U2 (0x00000001)));
315
316 /* put the flash back into command mode */
317 write32 (DATA_TO_FLASH (READ_ARRAY),0x00000000);
318
319 return (manufacturer == FLASH_MANUFACTURER && (devtype == FLASH_DEVICE_16mbit_TOP || devtype == FLASH_DEVICE_16mbit_BOTTOM));
320 }
321
322 /*
323 * Erase one block of flash memory at offset ``offset'' which is any
324 * address within the block which should be erased.
325 *
326 * Returns 1 if successful, 0 otherwise.
327 */
328 static inline int erase_block (__u32 offset)
329 {
330 __u32 status;
331
332 #ifdef LART_DEBUG
333 printk (KERN_DEBUG "%s(): 0x%.8x\n", __func__, offset);
334 #endif
335
336 /* erase and confirm */
337 write32 (DATA_TO_FLASH (ERASE_SETUP),offset);
338 write32 (DATA_TO_FLASH (ERASE_CONFIRM),offset);
339
340 /* wait for block erase to finish */
341 do
342 {
343 write32 (DATA_TO_FLASH (STATUS_READ),offset);
344 status = FLASH_TO_DATA (read32 (offset));
345 }
346 while ((~status & STATUS_BUSY) != 0);
347
348 /* put the flash back into command mode */
349 write32 (DATA_TO_FLASH (READ_ARRAY),offset);
350
351 /* was the erase successful? */
352 if ((status & STATUS_ERASE_ERR))
353 {
354 printk (KERN_WARNING "%s: erase error at address 0x%.8x.\n",module_name,offset);
355 return (0);
356 }
357
358 return (1);
359 }
360
361 static int flash_erase (struct mtd_info *mtd,struct erase_info *instr)
362 {
363 __u32 addr,len;
364 int i,first;
365
366 #ifdef LART_DEBUG
367 printk (KERN_DEBUG "%s(addr = 0x%.8x, len = %d)\n", __func__, instr->addr, instr->len);
368 #endif
369
370 /*
371 * check that both start and end of the requested erase are
372 * aligned with the erasesize at the appropriate addresses.
373 *
374 * skip all erase regions which are ended before the start of
375 * the requested erase. Actually, to save on the calculations,
376 * we skip to the first erase region which starts after the
377 * start of the requested erase, and then go back one.
378 */
379 for (i = 0; i < mtd->numeraseregions && instr->addr >= mtd->eraseregions[i].offset; i++) ;
380 i--;
381
382 /*
383 * ok, now i is pointing at the erase region in which this
384 * erase request starts. Check the start of the requested
385 * erase range is aligned with the erase size which is in
386 * effect here.
387 */
388 if (i < 0 || (instr->addr & (mtd->eraseregions[i].erasesize - 1)))
389 return -EINVAL;
390
391 /* Remember the erase region we start on */
392 first = i;
393
394 /*
395 * next, check that the end of the requested erase is aligned
396 * with the erase region at that address.
397 *
398 * as before, drop back one to point at the region in which
399 * the address actually falls
400 */
401 for (; i < mtd->numeraseregions && instr->addr + instr->len >= mtd->eraseregions[i].offset; i++) ;
402 i--;
403
404 /* is the end aligned on a block boundary? */
405 if (i < 0 || ((instr->addr + instr->len) & (mtd->eraseregions[i].erasesize - 1)))
406 return -EINVAL;
407
408 addr = instr->addr;
409 len = instr->len;
410
411 i = first;
412
413 /* now erase those blocks */
414 while (len)
415 {
416 if (!erase_block (addr))
417 {
418 instr->state = MTD_ERASE_FAILED;
419 return (-EIO);
420 }
421
422 addr += mtd->eraseregions[i].erasesize;
423 len -= mtd->eraseregions[i].erasesize;
424
425 if (addr == mtd->eraseregions[i].offset + (mtd->eraseregions[i].erasesize * mtd->eraseregions[i].numblocks)) i++;
426 }
427
428 instr->state = MTD_ERASE_DONE;
429 mtd_erase_callback(instr);
430
431 return (0);
432 }
433
434 static int flash_read (struct mtd_info *mtd,loff_t from,size_t len,size_t *retlen,u_char *buf)
435 {
436 #ifdef LART_DEBUG
437 printk (KERN_DEBUG "%s(from = 0x%.8x, len = %d)\n", __func__, (__u32)from, len);
438 #endif
439
440 /* we always read len bytes */
441 *retlen = len;
442
443 /* first, we read bytes until we reach a dword boundary */
444 if (from & (BUSWIDTH - 1))
445 {
446 int gap = BUSWIDTH - (from & (BUSWIDTH - 1));
447
448 while (len && gap--) *buf++ = read8 (from++), len--;
449 }
450
451 /* now we read dwords until we reach a non-dword boundary */
452 while (len >= BUSWIDTH)
453 {
454 *((__u32 *) buf) = read32 (from);
455
456 buf += BUSWIDTH;
457 from += BUSWIDTH;
458 len -= BUSWIDTH;
459 }
460
461 /* top up the last unaligned bytes */
462 if (len & (BUSWIDTH - 1))
463 while (len--) *buf++ = read8 (from++);
464
465 return (0);
466 }
467
468 /*
469 * Write one dword ``x'' to flash memory at offset ``offset''. ``offset''
470 * must be 32 bits, i.e. it must be on a dword boundary.
471 *
472 * Returns 1 if successful, 0 otherwise.
473 */
474 static inline int write_dword (__u32 offset,__u32 x)
475 {
476 __u32 status;
477
478 #ifdef LART_DEBUG
479 printk (KERN_DEBUG "%s(): 0x%.8x <- 0x%.8x\n", __func__, offset, x);
480 #endif
481
482 /* setup writing */
483 write32 (DATA_TO_FLASH (PGM_SETUP),offset);
484
485 /* write the data */
486 write32 (x,offset);
487
488 /* wait for the write to finish */
489 do
490 {
491 write32 (DATA_TO_FLASH (STATUS_READ),offset);
492 status = FLASH_TO_DATA (read32 (offset));
493 }
494 while ((~status & STATUS_BUSY) != 0);
495
496 /* put the flash back into command mode */
497 write32 (DATA_TO_FLASH (READ_ARRAY),offset);
498
499 /* was the write successful? */
500 if ((status & STATUS_PGM_ERR) || read32 (offset) != x)
501 {
502 printk (KERN_WARNING "%s: write error at address 0x%.8x.\n",module_name,offset);
503 return (0);
504 }
505
506 return (1);
507 }
508
509 static int flash_write (struct mtd_info *mtd,loff_t to,size_t len,size_t *retlen,const u_char *buf)
510 {
511 __u8 tmp[4];
512 int i,n;
513
514 #ifdef LART_DEBUG
515 printk (KERN_DEBUG "%s(to = 0x%.8x, len = %d)\n", __func__, (__u32)to, len);
516 #endif
517
518 /* sanity checks */
519 if (!len) return (0);
520
521 /* first, we write a 0xFF.... padded byte until we reach a dword boundary */
522 if (to & (BUSWIDTH - 1))
523 {
524 __u32 aligned = to & ~(BUSWIDTH - 1);
525 int gap = to - aligned;
526
527 i = n = 0;
528
529 while (gap--) tmp[i++] = 0xFF;
530 while (len && i < BUSWIDTH) tmp[i++] = buf[n++], len--;
531 while (i < BUSWIDTH) tmp[i++] = 0xFF;
532
533 if (!write_dword (aligned,*((__u32 *) tmp))) return (-EIO);
534
535 to += n;
536 buf += n;
537 *retlen += n;
538 }
539
540 /* now we write dwords until we reach a non-dword boundary */
541 while (len >= BUSWIDTH)
542 {
543 if (!write_dword (to,*((__u32 *) buf))) return (-EIO);
544
545 to += BUSWIDTH;
546 buf += BUSWIDTH;
547 *retlen += BUSWIDTH;
548 len -= BUSWIDTH;
549 }
550
551 /* top up the last unaligned bytes, padded with 0xFF.... */
552 if (len & (BUSWIDTH - 1))
553 {
554 i = n = 0;
555
556 while (len--) tmp[i++] = buf[n++];
557 while (i < BUSWIDTH) tmp[i++] = 0xFF;
558
559 if (!write_dword (to,*((__u32 *) tmp))) return (-EIO);
560
561 *retlen += n;
562 }
563
564 return (0);
565 }
566
567 /***************************************************************************************************/
568
569 static struct mtd_info mtd;
570
571 static struct mtd_erase_region_info erase_regions[] = {
572 /* parameter blocks */
573 {
574 .offset = 0x00000000,
575 .erasesize = FLASH_BLOCKSIZE_PARAM,
576 .numblocks = FLASH_NUMBLOCKS_16m_PARAM,
577 },
578 /* main blocks */
579 {
580 .offset = FLASH_BLOCKSIZE_PARAM * FLASH_NUMBLOCKS_16m_PARAM,
581 .erasesize = FLASH_BLOCKSIZE_MAIN,
582 .numblocks = FLASH_NUMBLOCKS_16m_MAIN,
583 }
584 };
585
586 static struct mtd_partition lart_partitions[] = {
587 /* blob */
588 {
589 .name = "blob",
590 .offset = BLOB_START,
591 .size = BLOB_LEN,
592 },
593 /* kernel */
594 {
595 .name = "kernel",
596 .offset = KERNEL_START, /* MTDPART_OFS_APPEND */
597 .size = KERNEL_LEN,
598 },
599 /* initial ramdisk / file system */
600 {
601 .name = "file system",
602 .offset = INITRD_START, /* MTDPART_OFS_APPEND */
603 .size = INITRD_LEN, /* MTDPART_SIZ_FULL */
604 }
605 };
606 #define NUM_PARTITIONS ARRAY_SIZE(lart_partitions)
607
608 static int __init lart_flash_init (void)
609 {
610 int result;
611 memset (&mtd,0,sizeof (mtd));
612 printk ("MTD driver for LART. Written by Abraham vd Merwe <abraham@2d3d.co.za>\n");
613 printk ("%s: Probing for 28F160x3 flash on LART...\n",module_name);
614 if (!flash_probe ())
615 {
616 printk (KERN_WARNING "%s: Found no LART compatible flash device\n",module_name);
617 return (-ENXIO);
618 }
619 printk ("%s: This looks like a LART board to me.\n",module_name);
620 mtd.name = module_name;
621 mtd.type = MTD_NORFLASH;
622 mtd.writesize = 1;
623 mtd.writebufsize = 4;
624 mtd.flags = MTD_CAP_NORFLASH;
625 mtd.size = FLASH_BLOCKSIZE_PARAM * FLASH_NUMBLOCKS_16m_PARAM + FLASH_BLOCKSIZE_MAIN * FLASH_NUMBLOCKS_16m_MAIN;
626 mtd.erasesize = FLASH_BLOCKSIZE_MAIN;
627 mtd.numeraseregions = ARRAY_SIZE(erase_regions);
628 mtd.eraseregions = erase_regions;
629 mtd._erase = flash_erase;
630 mtd._read = flash_read;
631 mtd._write = flash_write;
632 mtd.owner = THIS_MODULE;
633
634 #ifdef LART_DEBUG
635 printk (KERN_DEBUG
636 "mtd.name = %s\n"
637 "mtd.size = 0x%.8x (%uM)\n"
638 "mtd.erasesize = 0x%.8x (%uK)\n"
639 "mtd.numeraseregions = %d\n",
640 mtd.name,
641 mtd.size,mtd.size / (1024*1024),
642 mtd.erasesize,mtd.erasesize / 1024,
643 mtd.numeraseregions);
644
645 if (mtd.numeraseregions)
646 for (result = 0; result < mtd.numeraseregions; result++)
647 printk (KERN_DEBUG
648 "\n\n"
649 "mtd.eraseregions[%d].offset = 0x%.8x\n"
650 "mtd.eraseregions[%d].erasesize = 0x%.8x (%uK)\n"
651 "mtd.eraseregions[%d].numblocks = %d\n",
652 result,mtd.eraseregions[result].offset,
653 result,mtd.eraseregions[result].erasesize,mtd.eraseregions[result].erasesize / 1024,
654 result,mtd.eraseregions[result].numblocks);
655
656 printk ("\npartitions = %d\n", ARRAY_SIZE(lart_partitions));
657
658 for (result = 0; result < ARRAY_SIZE(lart_partitions); result++)
659 printk (KERN_DEBUG
660 "\n\n"
661 "lart_partitions[%d].name = %s\n"
662 "lart_partitions[%d].offset = 0x%.8x\n"
663 "lart_partitions[%d].size = 0x%.8x (%uK)\n",
664 result,lart_partitions[result].name,
665 result,lart_partitions[result].offset,
666 result,lart_partitions[result].size,lart_partitions[result].size / 1024);
667 #endif
668
669 result = mtd_device_register(&mtd, lart_partitions,
670 ARRAY_SIZE(lart_partitions));
671
672 return (result);
673 }
674
675 static void __exit lart_flash_exit (void)
676 {
677 mtd_device_unregister(&mtd);
678 }
679
680 module_init (lart_flash_init);
681 module_exit (lart_flash_exit);
682
683 MODULE_LICENSE("GPL");
684 MODULE_AUTHOR("Abraham vd Merwe <abraham@2d3d.co.za>");
685 MODULE_DESCRIPTION("MTD driver for Intel 28F160F3 on LART board");
Linux kernel - Deliverables
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